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Mamtani, Manish A.
- Deformation of Earth Materials - An Introduction to the Rheology of Solid Earth
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1 Kharagpur-721302, IN
1 Kharagpur-721302, IN
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Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 72, No 4 (2008), Pagination: 571-571Abstract
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- European Workshop on Fabric Quantification
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1 Geological-Palaontologisches Institut, INF-234, University, Heidelberg, 0-691 20, Heidelberg, DE
1 Geological-Palaontologisches Institut, INF-234, University, Heidelberg, 0-691 20, Heidelberg, DE
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 69, No 4 (2007), Pagination: 870-870Abstract
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- 16th Deformation Mechanisms, Rheology and Tectonics(DRT) Coisfference 2007
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Authors
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1 Department of Geology & Geophysics, IIT, Kharagpur 721302, IN
1 Department of Geology & Geophysics, IIT, Kharagpur 721302, IN
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Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 70, No 6 (2007), Pagination: 1093-1093Abstract
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- International Conference on Deformation Mechanisms, Rheology and Tectonics-(DRT)-2003
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1 Dept. of Geology & Geophysics, Indian Institute of Technology, Kharagpur -721 302, IN
1 Dept. of Geology & Geophysics, Indian Institute of Technology, Kharagpur -721 302, IN
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Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 62, No 2 (2003), Pagination: 247-248Abstract
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- Microtectonics (CD-ROM)
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Affiliations
1 Dept. of Geology & Geophysics, lndian Institute of Technology, Kharagpur-721 302, West Bengal, IN
1 Dept. of Geology & Geophysics, lndian Institute of Technology, Kharagpur-721 302, West Bengal, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 58, No 5 (2001), Pagination: 469-470Abstract
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- Glossary of Structural Geology and Tectonics
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1 IIT, Kharagpur-721302, IN
1 IIT, Kharagpur-721302, IN
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Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 72, No 3 (2008), Pagination: 433-433Abstract
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- Analysis of Deformation Fabric in an Alkaline Complex (Koraput): Implications for Time Relationship between Emplacement, Fabric Development and Regional Tectonics
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Authors
Affiliations
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur - 721 302, IN
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur - 721 302, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 74, No 1 (2009), Pagination: 78-94Abstract
The Koraput Alkaline Complex (KAC) lies on the NE-SW trending Sileru Shear Zone (SSZ) separating the Proterozoic Eastern Ghats Province from the Archaean Indian craton. The core of the KAC is made of hornblende gabbro, which is rimmed by a band of nepheline syenite in the east and syenodiorite in the west. The timing of magmatism with respect to the SSZ is disputed. The KAC was deformed during emplacement, and a magmatic foliation related to the syn-emplacement deformation, D1, is present in the gabbroic core. The dominant D2-related field fabric strikes NE-SW and is penetrative in parts of the gabbro and marginal lithologies. E-W trending D3 shear zones cut across the complex. Distinct textural domains resulted from strain partitioning during deformation. Parts of the complex with magmatic textures constitute Domain-1, while D2 and D3 fabric zones comprise Domains-2 and 3 respectively. Temperatures in the KAC initially decreased following D1, but increased through D2 and D3. Anisotropy of magnetic susceptibility (AMS) studies show that the magnetic fabric generally follows S1 in Domain-1. While the magnetic fabric in Domain-2 is dominantly parallel to S2, some of it parallels S1. The latter is a relict D1 fabric that is recognized from AMS analysis but is obliterated in the field, which confirms that the KAC pre-dates the SSZ. The response of magnetic fabrics to temperature and implications of the study for Indo-Antarctica amalgamation are discussed.Keywords
Anisotropy of Magnetic Susceptibility, Alkaline Complex, Fabric, Eastern Ghats Belt, Indo-Antarctica Amalgamation.
References
- AFTALION, M., BOWES, D.R., DASH, B. and FALLICK, A.E. (2000) Late Pan-African thermal history in the Eastern Ghats terrane, India, from U-Pb and K-Ar isotopic study of the Mid-Proterozoic Khariar alkali syenite, Orissa. Geol. Surv. India, Spec. Publ., v.57, pp.26-33.
- ARCHANJO, C.J. and BOUCHEZ, J.L. (1997) Magnetic fabrics and micro-structures of the post-collisional aegirine-augite syenite Triunfo pluton, NE Brazil. Jour. Struc. Geol., v.19, pp.849-860.
- ARCHANJO, C.J., LAUNEAU, P. and BOUCHEZ, J. L. (1995) Magnetic fabric vs. magnetite and biotite shape fabrics of the magnetite bearing granite pluton of Gamelerias (northeast Brazil). Physics Earth Planet. Int., v.89, pp.63-75.
- ARCHANJO, C.J., MACEDO, J.W.P., GALINDO, A.C. and ARAUJO, M.G.S. (1998) Brasiliano crustal extension and emplacement fabrics of the mangerite-charnockite pluton of Umarizal, Northeast Brazil. Precambrian Res., v.87, pp.19-32.
- BAILEY, D. K. (1992) Episodic alkaline activity across Africa: implications for the causes of continental break-up. In: B.C. Storey, T. Alabaster and R.J. Pankhurst (Eds.), Magmatism and the causes of continental break-up. Geol. Soc. London Spec. Publ., v.68, pp.91-98.
- BELL, T.H. (1978) Syntectonic nucleation of new grains in deformed mica. Tectonophysics, v.51, pp.T31-T37.
- BELL, T.H. (1979) The defomation and recrystallization of biotite in the Woodroffe Thrust mylonite zone. Tectonophysics, v.58, pp.139-158.
- BHADRA, S., GUPTA, S. and BANERJEE, M. (2004) Structural evolution across the Eastern Ghats Mobile Belt - Bastar craton boundary, India: hot over cold thrusting in an ancient collision zone. Jour. Struc. Geol., v.26, pp.233-245.
- BHATTACHARYA, S. and KAR, R. (2004) Alkaline intrusion in a granulite ensemble in the Eastern Ghats belt, India: shear zone pathway and a pull-apart structure. Proc. Indian Acad. Sci. (Earth and Planet. Sci.) v.113, pp.37-48.
- BHATTACHARYA, S. and KAR, R. (2005) Petrological and Geochemical Constraints on the Evolution of the Alkaline Complex of Koraput in the Eastern Ghats Granulite Belt, India. Gondwana Res., v.8, no.4, pp.596-602.
- BLENKINSOP, T. (2000) Deformation Microstructures and Mechanisms in Minerals and Rocks. Kluwer Academic Publishers, Dordrecht.
- BOLLE, O., DIOT, H. and DUCHESNE, J.C. (2000) Magnetic fabric and deformation in charnockitic igneous rocks of the Bjerkreim-Sokndal layered intrusion (Rogaland, Southwest Norway). Jour. Struc. Geol., v.22, pp. 647-667.
- BORRADAILE, G.J. and HENRY, B. (1997) Tectonic applications of magnetic susceptibility and its anisotropy. Earth Sci. Rev., v.42, pp.49-93.
- BOSE, M. K. (1964) Observation on the nepheline syenites of Koraput, Orissa. Geol. Mag., v.101, pp.558-563.
- BOSE, M.K. (1965) Differentiation of alkali basaltic magma. Nature, v.207, pp.1187-1188.
- BOSE, M.K. (1970) Petrology of the intrusive alkaline suite of Koraput, Orissa. Jour. Geol. Soc. India, v.11, pp.99-126.
- BOSE, M.K. (1971) Structure of the alkali complex and associated metamorphites of Koraput, Orissa. In: T. Murthy, and S.S. Roy, (Eds.), Studies in Earth Sciences (W.D. West Volume). Today and Tomorrow's Printers and Publishers, New Delhi, pp.280-288.
- Bouchez, J. L. (1997) Granite is never isotropic: an introduction to AMS studies of granitic rocks, In: Bouchez, J.L., Hutton, D.W.H. Stephens, W.E. (Eds.), Granite: From Segregation of Melt to Emplacement Fabrics, Kluwer Acad. Publ., Dordrecht, The Netherlands, pp.95-112.
- BURKE, K., ASHWAL, L.D. and WEBB, S.J. (2003) New way to map old sutures using deformed alkaline rocks and carbonatites. Geology, v.31, pp.391-394.
- CHETTY, T.R.K. and MURTHY, D.S.N. (1994) Collision tectonics in the Eastern Ghats Mobile Belt: mesoscopic to satellite scale structural observations. Terra Nova, v.6, pp.72-81.
- CHETTY, T.R.K. and MURTHY, D.S.N. (1998) Elchuru - Kunavaram - Koraput (EKK) Shear Zone, Eastern Ghats Granulite Terrane, India: a possible Precambrian suture zone. In: A.T. Rao, S.R. Divi and M.Yoshida (Eds.), Precambrian crustal processes in East Gondwana. Gondwana Res, Group Mem., no.4, pp.37-48.
- CLARK, G.S. and SUBBARAO, K.V. (1971) Rb-Sr isotopic age of the Kunavaram Series - a group of alkaline rocks from India. Canadian Jour. Earth Sci., v.8, pp.1597-1602.
- COLLINS, A.S. and PISAREVSKY, S.A. (2005) Amalgamating eastern Gondwana: the evolution of the Circum-Indian orogens. Earth Sci. Rev., v.71, no.3-4, pp.229-270.
- COWAN, J.E. (1999) Magnetic fabric constraints on the initial geometry of the Sudbury Igneous Complex: a folded sheet or a basin-shaped igneous body? Tectonophysics, v.307, pp.135-162.
- CRUDEN, A.R. and LAUNEAU, P. (1994) Structure, magnetic fabric and emplacement of the Archean Lebel Stock, SW Abitibi Greenstone Belt. Jour. Struc. Geol., v.16, pp.677-691.
- CZYGAN, W. and GOLDENBERG, G. (1989) Petrography and geochemistry of the alkaline complexes of Sivamalai, Elchuru and Uppalapadu, India. Mem. Geol. Soc. India, no.15, pp.225-240.
- DOBMEIER, C. and RAITH, M. (2003) Crustal architecture and evolution of the Eastern Ghats Belt and adjacent regions of India. In: M. Yoshida, B.F. Windley and S. Dasgupta (Eds.), Proterozoic East Gondwana: supercontinent assembly and breakup. Geol. Soc. London, Spec. Publ., v.206, pp.145-168.
- ETHERIDGE, M.A. and HOBBS, B.E. (1974) Chemical and deformational controls on recrystallization of mica. Contrib. Mineral. Petrol., v.43, pp.111-124.
- FERRE, E.C., BORDARIER, C. and MARCH, J.S. (2002) Magma flow inferred from AMS fabrics in a layered mafic sill, Insizwa, South Africa. Tectonophysics, v.354, pp.1-23.
- GAPAIS, D. (1989) Shear structures within deformed granites: mechanical and thermal indicators. Geology, v.17, pp.1144-1147.
- GUPTA, S. (2004) The Eastern Ghats Belt, India - a new look at an old orogen. In: Uniformitarianism revisited - comparison between ancient and modern orogens of India. Geol. Surv. India, Spec. Publ., no.84, pp.75-100.
- GUPTA, S. and BHATTACHARYA, A. (2000) Granulites of the 'Transition Zone': implications for the westward reach of the Eastern Ghats Belt. Geol. Surv. India Spec. Publ., v.57, pp.57-66.
- GUPTA, S. and BOSE, S. (2004) Deformation history of the Kunavaram Complex, Eastern Ghats Belt, India: implications for alkaline magmatism along the Indo-Antarctica suture. Gondwana Res. (Gondwana Newsletter section), v.7, no.4, pp.1235-1241.
- GUPTA, S., NANDA, J., MUKHERJEE, S. and SANTRA, M. (2005) Alkaline Magmatism Versus Collision Tectonics in the Eastern Ghats Belt, India: Contraints from Structural studies in the Koraput Complex. Gondwana Res., v.8, no.3, pp.403-419.
- HACKER, B.R. and CHRISTIE, J.M. (1990) Brittle/ductile and plastic/ cataclastic transition in experimentally deformed and metamorphosed amphibolite. In: A.G. Duba, W.B. Durham, J.W. Handin and H.F. Wang (Eds.), The brittle-ductile transition in rocks (The Heard Volume). Amer. Geophys. Union Monograph, v.56, pp.127-146.
- HROUDA, F. (1993) Theoretical models of magnetic anisotropy to strain relationship revisited. Physics Earth Planet. Int., v.77, pp.237-249.
- KRONENBERG, A.K., KIRBY, S.H. and PINKSTON, J. (1990) Basal slip and mechanical anisotropy of biotite. Jour. Geophys. Res., v.95, pp.19257-19279.
- KRUHL, J.H. (1996) Prism- and basal-plane parallel subgrain boundaries in quartz: a microstructural geothermobarometer. Jour. Metamor. Geol., v.14, pp.581-589.
- MADHAVAN, V. and KHURRAM, M.Z.A.K. (1989) The alkaline gneisses of Khariar, Kalahandi district, Orissa. Mem. Geol. Soc. India, no.15, pp.265-289.
- MAJUMDER, S. and MAMTANI, M.A. (2009) Magnetic fabric in the Malanjkhand Granite (Central India) - Implications for regional tectonics and Proterozoic suturing of the Indian shield. Phys. Earth Planet. Int., v.172, pp.310-323.
- MAMTANI, M.A. and ARORA, B.R. (2005) Anisotropy of magnetic susceptibility-a useful tool for analyses of naturally deformed rocks. Himalayan Geol., v.26, pp.175-186.
- MAMTANI, M.A. and GREILING, R.O. (2005) Granite emplacement and its relation with regional deformation in the Aravalli Mountain Belt-inferences from magnetic fabric. Jour. Struc. Geol., v.27, pp.2008-2029.
- MAMTANI, M.A. and SENGUPTA, A. (in press) Anisotropy of magnetic susceptibility analysis of deformed kaolinite: implications for evaluating landslides. Int. Jour. Earth Sci., doi: 10.1007/ s00531-008-0336-x.
- MEZGER, K. and COSCA, M. A. (1999) The thermal history of the Eastern Ghats Belt (India), as revealed by U-Pb and 40Ar-39Ar dating of metamorphic and magmatic minerals: implications for the SWEAT correlation. Precambrian Res., v.94, pp.251- 271.
- MUKHERJI, M.A., CHAUDHURI, A.K. and MAMTANI, M.A. (2004) Regional scale strain variations in Banded Iron Formations of eastern India: results from anisotropy of magnetic susceptibility studies. Jour. Struct. Geol., v.26, pp.2175-2189.
- NANDA, J., DOBMEIER, C.J. and Gupta, S. (2004) Pre-Tectonic Alkaline Magmatism in a Proterozoic Orogen: Evidence from metamorphosed syenite veins in the Koraput complex, Eastern Ghats Province, India. Geoscience Africa 2004, Abstract Volume, University of the Witwatersrand, Johannesburg, South Africa, pp.26-27.
- NANDA, J., GUPTA, S. and DOBMEIER, C.J. (2008) Metamorphism of the Koraput Alkaline Complex, Eastern Ghats Province, India - evidence for reworking of a granulite terrane. Precamrian Res., v 165, pp.153-168.
- NAGARAJU, J., CHETTY, T.R.K., VARA PRASAD, G.S. and Patil, S.K. (2008) Transpressional tectonics during the emplacement of Pasupugallu Gabbro Pluton, western margin of Eastern Ghats Mobile Belt, India: evidence from AMS fabrics. Precambrian Res., v.162, pp. 86-101.
- O'DRISCOLL, B., HARGRAVES, R.B., EMELEUS, C.H., TROLL, V.R., DONALDSON, C.H. and REAVY, R.J. (2007) Magmatic lineations inferred from anisotropy of magnetic susceptibility fabrics in Units 8, 9, and 10 of the Rum Eastern Layered Series, NW Scotland. Lithos, v.98, pp.27-44.
- POWELL, C.M. and PISAREVSKY, S.A. (2002) Late Neoproterozoic assembly of East Gondwana. Geology, v.30, pp.3-6.
- RAMAKRISHNAN, M., NANDA, J.K. and AUGUSTINE, P.F. (1998) Geological evolution of the Proterozoic Eastern Ghats Mobile Belt. Geol. Surv. India, Spec. Publ., no.44, pp.1-21.
- PRAVEEN, K.R., PRASANNAKUMAR, V. and MAMTANI, M.A. (in press). Time relationship between regional deformation and fabric development in the peralimala pluton, south india - inferences from magnetic fabric. Jour. Geol. Soc. India.
- RICKERS, K., MEZGER, K. and RAITH, M.M. (2001) Evolution of the continental crust in the Proterzoic Eastern Ghats Belt, India and new constraints for Rodinia reconstruction: Implications from Sm-Nd, Rb-Sr, and Pb-Pb isotopes. Precambrian Res., v.112, pp.183-212.
- Rosenberg, C.L. and Stunitz, H. (2003) Deformation and recrystallization of plagioclase along a temperature gradient: an example from the Bergell tonalite. Jour. Struct. Geol., v.25, pp.389-408.
- SARKAR, A., NANDA, J.K., PAUL, D.K., BISHUI, P.K. and GUPTA, S.N. (1989) Late Proterozoic alkaline magmatism in the Eastern Ghats Belt: Rb-Sr isotopic study on the Koraput complex, Orissa. Indian Minerals, v.43, pp.265-272.
- SARKAR, M., GUPTA, S. and PANIGRAHI, M. K. (2007) Disentangling tectonic cycles along a multiply deformed terrane margin: structural and metamorphic evidence for mid-crustal reworking of the Angul granulite complex, Eastern Ghats Belt, India. Jour. Struct. Geol., v.29, pp.802-818.
- SEN, K. and MAMTANI, M.A. (2006) Magnetic fabric, shape preferred orientation and regional strain in granitic rocks. Jour. Struct. Geol., v.28, pp.1870-1882.
- SEN, K., MAJUMDER, S. and MAMTANI, M.A. (2005). Degree of magnetic anisotropy as a strain intensity gauge in ferromagnetic granites. Jour. Geol. Soc., London, v.162, pp.583-586.
- SHEA, W.T. and KRONENBERG, A.K. (1992) Rheology and deformation mechanisms of an isotropic mica schist. Jour. Geophy. Res., v.97, pp.15201-15237.
- SHELLEY, D. (1994) Spider texture and amphibole preferred orientations. Jour. Struct. Geol., v.16, pp.709-717.
- STIPP, M., STÜNITZ, H., HEILBRONNER, R. and SCHMID, S.M. (2002) The eastern Tonale fault zone: a 'natural laboratory' for crystal plastic deformation of quartz over a temperature range from 250-700ºC. Jour. Struct. Geol., v.24, pp.1861-1884.
- SUBBARAO, K.V. (1971) The Kunavaram Series - a group of alkaline rocks, Khammam District, Andhra Pradesh, India. Jour. Petrol., v.12, pp.621-641.
- SUBBA RAO, T.V., BHASKAR RAO, Y.J., SIVARAMAN, T.V. and GOPALAN, K. (1989) Rb-Sr age and petrology of the Elchuru Alkaline Complex: implications to alkaline magmatism in the Eastern Ghat Mobile Belt. Mem.Geol. Soc. India, no.15, pp.207-223.
- TARLING, D.H. and HROUDA, F. (1993) The Magnetic Anisotropy of Rocks. Chapman and Hall, London.
- TORSVIK, T.H., CARTER, L.M., ASHWAL, L.D., BHUSHAN, S. K., PANDIT, M.K. and JAMTVEIT, B. (2001) Rodinia refined or obscured: palaeomagnetism of the Malani igneous suite (NW India). Precambrian Res., v.108, pp.319-333.
- TRIPATHY, N.R., SRIVASTAVA, H.B. and MAMTANI, M.A. (2009) Evaluation of regional strain gradient in mylonitic quartzites from the footwall of the Main Central Thrust Zone (Garhwal Himalaya, India): inferences from finite strain and AMS analyses. Jour. Asian Earth Sci., v.34, pp.26-37.
- UPADHYAY, D., RAITH, M., MEZGER, E.K., BHATTACHARYA, A. and KINNY, E.P.D. (2006) Mesoproterozoic rifting and Pan-African continental collision in SE India: evidence from the Khariar alkaline complex. Contrib. Mineral. Petrol., v.151, pp.434-456.
- VERNON, R.H. (1977) Microfabric of mica aggregates in partly recrystallized biotite. Contrib. Mineral. Petrol., v.61, pp.175- 185.
- VERNON, R.H., JOHNSON, S.H. and MELIS, E.A. (2004) Emplacement-related microstructures in the margin of a deformed pluton: the San Jose tonalite, Baja California, Mexico. Jour. Struct. Geol., v.26, pp.1867-1884.
- Time Relationship Between Regional Deformation and Fabric Development in the Peralimala Pluton, South India - Inferences from Magnetic Fabric
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Authors
Affiliations
1 Department of Geology, University of Kerala, Kariavattom, Trivandrum - 695 581, IN
2 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur - 721 302, IN
1 Department of Geology, University of Kerala, Kariavattom, Trivandrum - 695 581, IN
2 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur - 721 302, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 73, No 6 (2009), Pagination: 803-812Abstract
Anisotropy of magnetic susceptibility (AMS) is investigated in samples of Peralimala (PM) pluton (ca. 550 Ma) and adjacent gneiss, gabbro, mylonite and amphibolite from the Moyar Shear Zone (MSZ), Southern Granulite Terrane (SGT) with an aim to decipher the time-relationship between fabric development in the pluton and regional tectonics. Magnetic foliation recorded in the PM pluton is sub-parallel to the WNW-ESE striking MSZ. Magnetic foliation and lineation trajectories are sigmoidal and curve into the shear zone. A dextral sense of shear is deciphered from the trajectories, which is similar to that reported within the MSZ in some earlier studies. It is inferred that the PM pluton has developed post-emplacement deformation-fabric related to reactivation of the MSZ during Pan-African age. Based on the data and existing information about regional tectonics of the area, the possibility of the (a) PM pluton being a Deformed Alkali Rock and Carbonatite (DARC) and (b) MSZ marking an ancient suture zone, is discussed.Keywords
Southern Granulite Terrane, Moyar Shear Zone, Deformed Pluton, Anisotropy of Magnetic Susceptibility, DARC.References
- ARCHANJO, C.J., BOUCHEZ, J.L., CORSINI, M. and VAUCHEZ, A. (1994) The Pombal granite pluton: magnetic fabric, emplacement and relationships with the Brasiliano strike-slip setting of NE Brazil (Paraiba State). Jour. Struct. Geol., v.16, pp.323-336.
- BENN, K., HAM, M.N., PIGNOTTA, G.S. and BLEEKER, W. (1998) Emplacement and deformation of granites during transpression: magnetic fabrics of the Archean Sparrow pluton Slave Province, Canada. Jour. Struct. Geol., v.20, pp.1247-1259.
- BLENKINSOP, T. (2000) Deformation microstructures and mechanisms in minerals and rocks. Kluwer Academic Publishers, Dordrecht, 150p.
- BORRADAILE, G.J. (1988) Magnetic susceptibility, petrofabrics and strain. Tectonophysics, v.156, pp.1-20.
- BORRADAILE, G.J. and HENRY, B. (1997) Tectonic applications of magnetic susceptibility and its anisotropy. Earth Sci. Rev., v.42, pp.49-93.
- BOUCHEZ, J.L., DELAS, C., GLEIZES, G. and NEDELEC, A. (1992) Submagmatic microfractures in granites. Geology, v.20, pp.35-38.
- BURKE, K., ASHWAL, L.D. and WEBB, S.J. (2003) New way to map old sutures using deformed alkaline rocks and carbonatites.Geology, v.31, pp.391-394.
- CHETTY, T.R.K., RAO, Y.J.B. and NARAYANA, B.L. (2003) A structural cross section along Krishnagiri-Palani corridor, Southern Granulite Terrain of India. In: M. Ramakrishnan (Ed.), Tectonics of Southern Granulite Terrain. Mem. Geol. Soc.India, no.50, pp.255-277.
- DRURY, S.A., HARRIS, N.B.W., HOLT, R.W., SMITH, R.G.F. and WIGHTMAN, R.T. (1984) Precambrian tectonics and crustal evolution in South India. Jour. Geol., v.92, pp.3-20.
- FERRE, E., GLEIZES, G. and CABY, R. (2002) Obliquely convergent tectonics and granite emplacement in the Trans-Saharan belt of Eastern Nigeria - a synthesis. Precambrian Res., v.114, pp.199-219.
- GATTACCEACA, J., ORSINI, J.B., BELLOT, J.P., HENRY, B., ROCHETTE, P., ROSSI, P. and CHERCHI, G. (2004) Magnetic fabric of granitoids from Southern Corsica and Northern Sardinia and implications of Late Hercynian tectonic setting. Jour. Geol. Soc. London, v.161, pp.277-289.
- GREILING, R.O. and VERMA, P.K. (2001) Strike-slip tectonics and granitoid emplacement: an AMS fabric study from the Odenwald Crystalline Complex, SW Germany. Mineral.Petrol., v.72, pp.165-184.
- HROUDA, F. (1993) Theoretical models of magnetic anisotropy of strain relationship revisited. Phy. Earth and Planet. Inter., v.77, pp.237-249.
- HROUDA, F. and JANAK, F. (1976) The changes in shape of the magnetic susceptibility ellipsoid during progressive metamorphism and deformation. Tectonophysics, v.34, pp.135-148.
- JAIN, A.K., SINGH, S. and MANICKAVASAGAM, R.M. (2003) Intracontinental Shear Zones in the Southern Granulite Terrain: their Kinematics and Evolution. In: M. Ramakrishnan (Ed.), Tectonics of Southern Granulite Terrain. Mem. Geol. Soc.India, no.50., pp.225-253.
- JELINEK, V. (1981) Characterization of the magnetic fabrics in rocks.Tectonophysics, v.79, pp.63-67.
- KRISHNA BRAHMAM, N. (1993) Gravity in relation to crustal structure, palaeosutures and seismicity of southern India.Mem. Geol. Soc. India, No.25, pp.165-201.
- KRUHL, J.H. (1996) Prism- and basis-parallel subgrain boundaries in quartz: A microstructural geothermobarometer. Jour.Metamorphic Geol., v.14, pp.581-598.
- LEELANANDAM, C., BURKE, K., ASHWAL, L.D. and WEBB, S.J. (2006) Proterozoic mountain building in Peninsular India: an analysis based primarily on alkaline rock distribution. Geol. Mag., v.143(2), pp.195-212.
- MAJUMDER, S. and MAMTANI, M.A. (2009) Magnetic fabric in the Malanjkhand Granite (Central India) - implications for regional tectonics and Proterozoic suturing of the Indian shield.Phy. Earth and Planet. Inter., v.172, pp.310-323.
- MAMTANI, M.A. and ARORA, B.R. (2005) Anisotropy of Magnetic Susceptibility - a useful tool for analyses of naturally deformed rocks. Himalayan Geology, v.26, pp.175-186.
- MAMTANI, M.A. and GREILING, R.O. (2005) Granite emplacement and its relation with regional deformation in the Aravalli Mountain Belt (India) - inferences from magnetic fabric. Jour.Struct. Geol., v.27, pp.2008-2029.
- MAMTANI, M.A., KARANTH, R.V. and GREILING, R.O. (1999) Orogenic deformation and its relationship to AMS fabric-an example from the southern margin of the Aravalli Mountain Belt, India. In: T. Radhakrishna and J.D. Piper (Eds.), The Indian Subcontinent and Gondwana: a Palaeomagnetic and Rock Magnetic Perspective, Mem. Geol. Soc. India, no.44, pp.9-24.
- MEISSNER, B., DETERS, P., SRIKANTAPPA, C. and KÖHLER, H. (2002) Geochronological evolution of the Moyar, Bhavani and Palghat shear zones of southern India: implications for east Gondwana correlations. Precambrian Res., v.114, pp.149-175.
- MILLER, J. S., SANTOSH, M. and PRESSLEY, R.A. (1996) A PanAfrican thermal event in southern India. Jour. Southeast Asian Earth Sci., v.14(3/4), pp.127-136.
- MUKHERJI, A., CHAUDHARI, A.K. and MAMTANI, M.A. (2004) Regional scale strain variations in the Banded Iron Formations of Eastern India: results from anisotropy of magnetic susceptibility studies. Jour. Struct. Geol., v.26, pp.2175-2189.
- MUKHOPADHYAY. D, KUMAR. P.S., SRINIVASAN. R. and BHATTACHARYA. T. (2003) Nature of Palaghat-Cauvery lineament in the region south of Namakkal Tamil Nadu. Implications for Terrane Assembly in South Indian Granulite Province. In: M. Ramakrishnan (Ed.), Tectonics of southern granulite terrain. Mem. Geol. Soc. India, no.50, pp.279-296.
- NAHA, K. and SRINIVASAN, R. (1996) Nature of the Moyar and Bhavani shear zones, with a note on its implication on the tectonics of the southern Indian Precambrian shield. Proc. Ind. Acad. Sci. (Earth and Planet. Sci), v.105, pp.143-189.
- NAIR, M.M. and VIDYADHARAN, K.T. (1982) Rapakivi granite of Ezhimala complex and its significance. Jour. Geol. Soc. India, v.23, pp.46-51.
- NEVES, S.P., ARAUJO, A.M.B., CORREIA, P.B. and MARIANO, G. (2003) Magnetic fabrics in the Cabanas Granite (NE Brazil) Interplay between emplacement and regional fabrics in a dextral transpressive regime. Jour. Struct. Geol., v.25, pp.441-453.
- PIGNOTTA, G.S. and BENN, K. (1999) Magnetic fabric of the Barrington Passage pluton Meguma Terrane, Nova Scotia: a two-stage fabric history of syntectonic emplacement.Tectonophysics, v.307, pp.75-92.
- PRASANNAKUMAR, V. and LLOYD, G.E. (2007) Development of crystal lattice preferred orientation and seismic properties in Bhavani shear zone, Southern India. Jour. Geol. Soc. India, v.70, pp.282-296.
- RAITH, M., SRIKANTAPPA, C., ASHAMANJERI, K.G. and SPIERING, B. (1990) The granulite terrain of the Nilgiri Hills (Southern India): Characterisation of high-grade metamorphism. In: D. Vielzeuf, and P. Vidal (Eds.), Granulites and Crustal Evolution. NATO. ASI. Series C. 311, pp.339-365.
- RAITH, M., SRIKANTAPPA, C., BUHL, D. and KÖHLER, H. (1999) The Nilgiri Enderbites, South India: nature and age constraints on protolith formation, high-grade metamorphism and cooling history. Precambrian Res., v.98, pp.129-150.
- RAJESH, H.M. (2000) Characterization and origin of a compositionally zoned aluminous A-type granite from South India. Geol. Mag., v.137(3), pp.291-318.
- RAVINDRAKUMAR, G.R. (1986) The petrology and geochemistry of mafic anorthosites and gabbros of the Bavali fault zone, North Kerala. Proc. Indian Acad. Sci. (Earth Planet Sci.), v.95(1), pp.117-130.
- RAVINDRAKUMAR, G.R. and SINHA-ROY, S. (1985) Field relations and geochemistry of Peralimala syenite pluton, North Kerala. Indian Mineralogist, v.26, pp.33-41.
- ROCHETTE, P., SCAILLET, B., GULLIOT, S., LEFORT, P. and PECHER, A. (1994) Magnetic properties of the high Himalayan leucogranites - structural implications. Earth and Planetary Sci. Lett., v.126, pp.217-234.
- SANTOSH, M. and DRURY, S.A. (1988) Alkali granites with PanAfrican affinities from Kerala, South India. Jour. Geol., v.96, pp.616-622.
- SEN, K. and MAMTANI, M.A. (2006) Magnetic fabric, shape preferred orientation and regional strain in granitic rocks. Jour. Struct. Geol., v.28, pp.1870-1882.
- SEN, K., MAJUMDER, S. and MAMTANI, M.A. (2005) Degree of magnetic anisotropy as a strain intensity gauge in ferromagnetic granites. Jour. Geol. Soc. London, v.162, pp.583-586.
- SINGH, A.P., MISHRA, D.C., VIJAYAKUMAR, V. and VYAGHESWARA RAO, M.B.S. (2003) Gravity-magnetic signatures and crustal architecture along Kuppam-Palani Geotransect, South India.In: M. Ramakrishnan (Ed.), Tectonics of southern granulite terrain. Mem. Geol. Soc. India, no.50, pp.139-163.
- SRIKANTIA, S.V. (1999) Tectonic framework of the southern Granulite Zone and its evolution. In: Int. Sym. on charnockite and granulite facies rocks. Geologists Association of Tamil Nadu, pp.27-38.
- TARLING, D.H. and HROUDA, F. (1993) The Magnetic Anisotropy of Rocks. Chapman and Hall, London, p.217.
- Fractal Analysis of Quartz Grain Boundary Sutures in a Granite (Malanjkhand, Central India) - Implications to Infer Regional Tectonics
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1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur - 721 302, IN
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur - 721 302, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 73, No 3 (2009), Pagination: 309-319Abstract
In the present paper the intensity of serration of quartz grain boundary sutures in the Palaeoproterozoic age Malanjkhand granite (Central India) is quantified using the ruler method of fractal analyses. The northern margin of the granite has proximity to the Central Indian Suture (CIS) that forms the southernmost part of Central Indian Tectonic Zone (CITZ) along which amalgamation of the northern and southern Indian shields took place. The fractal dimension (D) of the quartz sutures is calculated in 13 samples collected at varying distance from the CIS. D values are noted to increase in samples towards the CIS. This demonstrates the influence of the tectonic events along the CIS on fabric development in the Malanjkhand granite. Magmatic fabric defined by preferentially oriented feldspar laths and high-T solid-state deformation fabrics are observed in areas distant from the CIS. In contrast, mylonites and low-T fabrics such as bulging quartz grain boundaries occur in proximity to the CIS. It is inferred that the emplacement and high-T fabric development in the Malanjkhand granite was synchronous with regional accretionary processes that occurred in the region during the Palaeoproterozoic. Two different possibilities, one involving a single tectonic event and the other involving multiple tectonic events are discussed to explain the superimposition of low-T over high-T fabric due to which intensity of quartz grain boundary serration increases towards the CIS.Keywords
Fractal Analysis, Quartz Sutures, Granite, Microstructure, Tectonics, Malanjkhand, Central India.References
- ALONSO OLAZABAL, A., CARRADECO M. and ARANGUREN, A. (1999) Petrology, magnetic fabric and emplacement in a strike-slip regime of a zoned peraluminous granite: the Campanario-La Haba pluton, Spain. In: A. Castro, C. Fernandez and J.L. Vigneresse (Eds.), Understanding Granites: Integrating New and Classical Techniques. Geol. Soc. London, Spec. Publ. No.168, pp.177-190.
- BLENKINSOP, T.J. (2000) Deformation microstructures and mechanisms in minerals and rocks. Kluwer Academic Publishers, Drodrecht.
- BLUMENFELD, P. and BOUCHEZ, J.L. (1988) Shear criteria in granite and migmatite deformed in the magmatic and solid states. Jour. Struct. Geol., v.10, pp.361-372.
- BOUCHEZ, J.L. (1997) Granite is never isotropic: an introduction to AMS studies of granitic rocks. In: J.L.Bouchez, D.W.H. Hutton and W.E. Stephens (Eds.), Granite: From Segregation of Melt to Emplacement Fabrics, Kluwer Acad. Publ., Dordrecht, The Netherlands, pp.95-112.
- BOUCHEZ, J.L., DELAS, C., GLEIZES, G., NEDELEC, A. and CUNEY, M. (1992) Submagmatic fractures in granites. Geology, v.20, pp.35-38.
- COLLINS, A.S. and PISAREVSKY, S.A. (2005) Amalgamating eastern Gondwana: The evolution of the Circum-Indian Orogens. Earth-Sci. Rev., v.71, pp.229-270.
- GREILING, R.O. and VERMA, P.K. (2001) Strike-slip tectonics and granitoid emplacement: an AMS fabric study from the Odenwald Crystalline Complex, SW Germany. Mineral. and Petrol., v.72, pp.165-184.
- HIRATA, T. (1989) Fractal dimension of fault systems in Japan: fractal structure in rock fracture geometry at various scales. Pure App. Geophy., v.131, pp. 157-169.
- JAIN, S.C., NAIR, K.K.K. and YEDEKAR, D.B. (1995) Geology of the Son-Narmada Lineament Zone in Central India. Geol. Surv. India, Spec. Publ., No.10, pp.1-154. KAYE, B.H. (1989) A random walk through fractal dimensions. VCH, Wienheim.
- KRUHL, J.H. (1996) Prism- and basal-plane parallel subgrain boundaries in quartz: a microstructural geothermobarometer. Jour. Metamorph. Geol., v.14, pp.581-589.
- KRUHL, J.H. and NEGA, M. (1996) The fractal shape of sutured quartz grain boundaries: application as a geothermometer. Geol. Rundsch., v.85, pp.38-43.
- MAINPRICE, D. BOUCHEZ, J.-L., BLUMENFELD, P. and TUBIA, J.M. (1986) Dominant c-slip in naturally deformed quartz: implications for dramatic plastic softening at high temperature. Geology, v.14, pp.581-589.
- MAMTANI, M.A. and GREILING, R.O. (2005) Granite emplacement and its relation with regional deformation in the Aravalli Mountain Belt (India)-inferences from magnetic fabric. Jour. Struct. Geol., v.27, pp.2008-2029.
- MANDELBROT, B.B. (1983) The fractal geometry of nature. 2nd edition, Freeman, New York.
- MAZUMDER, R., BOSE, P.K. and SARKAR, S. (2000) A commentary on the tectono-sedimentary record of the pre-2.0 Ga continental growth of India vis-a-vis a possible pre-Gondwana Afro-Indian supercontinent. Jour. African Earth Sci., v.30, pp.201-217.
- MCCAFFREY, K.J.W., MILLER, C.F. and KARLSTROM, K.E. (1999) Synmagmatic deformation patterns in the Old Woman Mountains, SE California. Jour. Struct. Geol., v. 21, pp.335-349.
- MCKENZIE, D. (1985) The extraction of magma from the crust and mantle. Earth Planet. Sci. Lett., v.74, pp.81-91.
- MISHRA, D.C., SINGH, B., TIWARI, V.M., GUPTA, S.B. and RAO, M.B.S.V. (2000) Two cases of continental collisions and related tectonics during the Proterozoic period in India-insights from gravity modelling constrained by seismic and magnetotelluric studies. Precambrian Res., v.99, pp.149-169.
- PASSCHIER, C.W. and TROUW, R.A.J. (2005) Microtectonics. 2nd Edition, Springer-Verlag, Berlin, Heidelberg. PANIGRAHI, M.K., BREAM, B.R., MISRA, K.C. and NAIK, R.K. (2004) Age of granitic activity associated with copper-molybdenum mineralization at Malanjkhand, Central India. Mineralium Deposita, v.39, pp.670-677.
- PANIGRAHI, M.K., MISHRA, B. and MOOKHERJEE, A. (1991) Ore mineralogy and fluid inclusion characteristics of different ore associations from Malanjkhand copper deposit, M.P. (India). Jour. Geol. Soc. India, v.37, pp.239-256.
- PANIGRAHI, M.K. and MOOKHERJEE, A. (1997) The Malanjkhand copper (+molybdenum) deposit, India: Mineralization from a low-temperature ore-fluid of granitoid affiliation. Mineralium Deposita, v.32, pp. 133-148.
- PATERSON, S.R., VERNON, R.H. and TOBISCH, O.T. (1989) A review of criteria for the identification of magmatic and tectonic foliations in granitoids. Jour. Struct. Geol., v.11, pp.349-363.
- RAO, G.V.S.P. and MISHRA, D.C. (1997) A Proterozoic APWP of cratons from either side of Narmada-Son lineament. Proc. Workshop on Tectonics of the "Narmada-Son lineament". Geol. Surv. India, Calcutta, Misc. Publ., No.63.
- ROSENBERG, C.L., BERGER, A. and SCHMID, S.M. (1995) Observations from the floor of a granitoid pluton: Inferences on the driving force of final emplacement. Geology, v.23, pp.443-446.
- ROY, A., HANUMA PRASAD, M. and BHOWMIK, S.K. (2001) Recognition of Pre-Grenvillian and Grenvillian Tectonothermal Events in the Central Indian Tectonic Zones: Implications on Rodinian Crustal Assembly. Gondwana Res., v.4, pp.755-757
- ROY, A., KAGAMI, H., YOSHIDA, M., ROY, A., BANDYOPADHYAY, B.K., CHATTOPADHYAY, A., KHAN, A.S., HUIN, A.K. and PAL. T. (2006) Rb-Sr and Sm-Nd dating of different metamorphic events from the Sausar Mobile Belt, central India: implications for Proterozoic crustal evolution. Jour. Asian Earth Sci., v.26, pp.61-76.
- SAINT-BLANQUAT, M. and TIKOFF, B. (1997) Development of magmatic to solid-state fabrics during syntectonic emplacement of the Mona Creek granite, Sierra Nevada Batholith, California. In: J.L. Bouchez, D.W.H. Hutton and W.E. Stephens (Eds.), Granite: From Segregation of Melt to Emplacement Fabrics, Kluwer Acad. Publ., Dordrecht, The Netherlands, pp.231-252.
- SEN, K. and MAMTANI, M.A. (2006) Magnetic fabric, shape preferred orientation and regional strain in granitic rocks. Jour. Struct. Geol., v. 28, pp. 1870-1882.
- SEN, K., MAJUMDER, S. and MAMTANI, M.A. (2005). Degree of magnetic anisotropy as a strain intensity gauge in ferromagnetic granites. Jour. Geol. Soc., London, v.162, pp.583-586.
- SIMPSON, C. and WINTSCH, R.P. (1989) Evidence for deformation induced K-feldspar replacement by myrmekite. Jour. Metamorph. Geol., v.7, pp.261-275.
- STEIN, H.J., HANNAH, J.L., ZIMMERMAN, A., MARKEY, R.J., SARKAR, S.C. and PAL, A.B. (2004) A 2.5 Ga porphyry Cu-Mo-Au deposit at Malanjkhand, central India: implications for Late Archean continental assembly. Precambrain Res., v.134, pp.189-226.
- STIPP, M., STUNITZ, H., HEILBRONNER, R. and SCHMID, S.M. (2002a) The eastern Tonale fault zone: a "natural laboratory" for crystal plastic deformation of quartz over a temperature range from 250 to 700°C. Jour. Struct. Geol., v.24, pp.1861-1884.
- STIPP, M., STUNITZ, H., HEILBRONNER, R. and SCHMID, S.M. (2002b) Dynamic recrystallisation of quartz: correlation between natural and experimental conditions. In: S. de Meer, M.R. Drury, J.H.P. de Bresser and G.M. Pennock (Eds.) Deformation Mechanisms, Rheology and Tectonics: Current Status and Future Perspectives, Geol. Soc. London, Spec. Publ. No.200, pp.171-190.
- TAKAHASHI, M., NAGAHAMA, H., MASUDA, T. and FUJIMURA, A. (1998) Fractal analysis of experimentally, dynamically recrystallized quartz grains and its possible application as a ε meter. Jour. Struct. Geol., v.20, pp.269-275.
- VELDE, B., DUBOIS, J., TOUCHARD, G. and BADRI, A. (1990) Fractal analysis of fractures in rocks: the Cantor's Dust method. Tectonophysics, v.179,pp. 345-352.
- VIGNERESSE, J.L., BARBEY, P. and CUNEY, M. (1996) Rheological transitions during partial melting and crystallisation with application to feldsic magma segregation. Jour. Petrol., v.37, pp.1579-1600.
- VOLLAND, S. and KRUHL, J.H. (2004) Anisotropy quantification: the application of fractal geometry methods on tectonic fracture patterns of a Hercynian fault zone in NW Sardinia. Jour. Struct. Geol., v.26, pp.1499-1510.
- YEDEKAR, D.B., JAIN, S.C., NAIR, K.K.K. and DUTTA, K.K. (1990) The central Indian collision suture. Geol. Surv. India, Spec. Publ., No.28, pp.1-43.
- YOSHIDA, M., DIVI, R.S. and SANTOSH, M. (2001) Precambrian central India and its role in the Gondwanaland-Rodinia context. Gondwana Res., v.4, pp.208-211.
- "Deformation Style in Main Boundary Thrust and Ramgarh Thrust, Kumaun Lesser Himalaya"
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Authors
Affiliations
1 IIT, Kharagpur, IN
1 IIT, Kharagpur, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 75, No 4 (2010), Pagination: 665-666Abstract
No Abstract.Full Text
- The Making of India - Geodynamic Evolution
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Authors
Affiliations
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur-721302, IN
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur-721302, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 76, No 2 (2010), Pagination: 188-189Abstract
No Abstract.Full Text
- Rock Deformation and Structures (RDS-I) Conference-2010
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Authors
Affiliations
1 Department of Geology and Geophysics, IIT, Kharagpur - 721302, IN
1 Department of Geology and Geophysics, IIT, Kharagpur - 721302, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 77, No 3 (2011), Pagination: 286-286Abstract
No Abstract.Full Text
- Syntectonic Growth of Porphyroblasts over Crenulation Cleavages - An Example from the Precambrian Rocks of the Lunavada Group, Gujarat
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Authors
Affiliations
1 Department of Geology, M.S. University of Baroda, Vadodara - 390002, IN
1 Department of Geology, M.S. University of Baroda, Vadodara - 390002, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 50, No 2 (1997), Pagination: 171-178Abstract
Porphyroblasts are known to overgrow crenulation cleavages syntectonicaIly in crenulated schists. However, the timing of growth of such porphyroblasts remains a problem. Whilst some researchers believe that porphyroblasts can syntectonically overgrow crenulation cleavages during the genesis of the crenulation cleavage, there are others who believe that porphyroblasts overgrow crenulation cleavages during an episode of deformation which post-dates the deformation which resulted in the formation of crenulation cleavage. In the present paper we present microstructural . evidence of syntectonic porphyroblasts overgrowing crenulation cleavages from the mica schists of the Lunavada Group of Precambrian rocks occurring in Gujarat. It is concluded that syntectonic porphyroblasts can grow over crenulation cleavages during the same episode of deformation which resulted in the genesis of the crenulation cleavage.Keywords
Structural Geology, Tectonics, Porphyroblast, Crenulation Cleavage, Gujarat.- Penrose Conference – 2011 on Deformation Localization in Rocks: New Advances
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Authors
Affiliations
1 Indian Institute of Technology, Kharagpur, IN
1 Indian Institute of Technology, Kharagpur, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 78, No 6 (2011), Pagination: 599-599Abstract
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- Structural Geology - From Classical to Modern Concepts
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Authors
Affiliations
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur-721 302, IN
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur-721 302, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 75, No Spl Iss 1 (2010), Pagination: 9-11Abstract
No Abstract.Full Text
- Strain-Rate Estimation Using Fractal Analysis of Quartz Grains in Naturally Deformed Rocks
Abstract Views :172 |
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Authors
Affiliations
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur - 721302, West Bengal, IN
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur - 721302, West Bengal, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 75, No Spl Iss 1 (2010), Pagination: 202-209Abstract
The area-perimeter fractal dimension (D) of quartz grains has earlier been proposed as a strain-rate gauge based on experimental deformation of quartz aggregates. To test the application in naturally deformed rocks, D is calculated in (a) three quartzites belonging to the Lunavada Group of rocks (Aravalli Mountain Belt, NW India) that developed textures between 420-600°C and (b) one quartz reef sample from the Malanjkhand Granite (Central India), which underwent dynamic recrystallization between 250-400°C. Using the above T ranges and calculated D values, strain-rates are calculated for the two sets of samples. A 10-12.7 s-1 strain rate at 250°C is calculated for the quartz reef sample. However, at higher temperatures the calculated strain-rate is >10-10 s-1 for the quartz reef and the quartzite samples. The quartzites show evidence of dynamic recrystallization by grain boundary migration (GBM) and subgrain rotation (SGR), while the quartz reef is replete with evidence of bulging (BLG) recrystallization. T and calculated strainrates are plotted on available recrystallization map of quartz. It is demonstrated that whilst the T/strain-rate of the quartzites does not fall in the region of GBM and SGR, the T/strain-rate of the quartz reef falls in the BLG region. The problems with strain-rate calculations using area perimeter fractal dimension are discussed. It is concluded that the method of strain-rate calculation can be used only for lower T.Keywords
Strain-Rate, Fractals, Quartz, Deformation.References
- BAKKER, R.J. and MAMTANI, M.A. (2000) Fluid inclusions as metamorphic process indicators in the southern Aravalli mountain belt (India). Contrib. Mineral. Petrol., v.139, pp.163-179.
- GOPALAN, K., TRIVEDI, J.R., MERH, S.S., PATEL, P.P. and PATEL, S.G. (1979) Rb-Sr age of Godhra and related granites, Gujarat (India). Proc. Indian Acad. Sci. (Earth and Planet. Sci.), v.88A, pp.7-17.
- GUPTA, S.N., MATHUR, R.K. and ARORA, Y.K. (1992) Lithostratigraphy of Proterozoic rocks of Rajasthan and Gujarat - A review. Rec. Geol. Surv. India, v.115, pp.63-85.
- GUPTA, S.N., ARORA,Y.K., MATHUR, R.K., IQBALUDDIN, B.P., SAHAI, T.N. and SHARMA, S.B. (1995) Geological Map of the Precambrians of the Aravalli Region, Southern Rajasthan and Northeastern Gujarat, India. Geol. Surv. India Publ., Hyderabad.
- HIRTH, G. and TULLIS, J. (1992) Dislocation creep regimes in quartz aggregates. Jour. Struct. Geol., v.14, pp.145-60.
- MAJUMDER, S. and MAMTANI, M.A. (2009a). Magnetic fabric in the Malanjkhand Granite (central India)-implications for regional tectonics and Proterozoic suturing of the Indian shield. Phys. Earth and Planet. Int., v.172, pp.310-323.
- MAJUMDER, S. and MAMTANI, M.A. (2009b) Intensity of shape preferred orientation in a granite and its tectonic implications. Curr. Sci., v.96, pp.156-160.
- MAJUMDER, S. and MAMTANI, M.A. (2009c) Fractal analysis of quartz grain boundary sutures in a granite (Malanjkhand, central India) - implications to infer regional tectonics. Jour. Geol. Soc. India, v.73, pp.309-319.
- MAMTANI, M.A. (1998) Deformation mechanisms of the Lunavada Precambrian rocks, Panchmahal district, Gujarat. Unpublished Ph.D. thesis, M.S. University of Baroda (India), 268p.
- MAMTANI, M.A. and KARANTH, R.V. (1996) Effect of heat on crystal size distributions of quartz. Curr. Sci., v.70, pp.396-399.
- MAMTANI, M.A. and KARANTH, R.V. (1997) Syntectonic growth of porphyroblasts over crenulation cleavages - an example from the Precambrian rocks of the Lunavada Group, Gujarat. Jour. Geol. Soc. India, v.50, pp.171-178.
- MAMTANI, M.A. and GREILING, R.O. (2005) Granite emplacement and its relation with regional deformation in the Aravalli Mountain Belt (India)-inferences from magnetic fabric. Jour. Struct. Geol., v.27, pp.2008-2029.
- MAMTANI, M.A. and GREILING, R.O. (in press) Serrated quartz grain boundaries, temperature and strain rate: testing fractal techniques in a syntectonic granite. In: G. Gosso, A.M. Marotta and I. Spalla, I. (Eds.), Advances in Interpretation of Geological Processes: Refinement of Multi-Scale Data and Integration in Numerical Modelling. Geol. Soc. London Spec. Publ., (inpress).
- MAMTANI, M.A., KARANTH, R.V. and GREILING, R.O. (1999) Are crenulation cleavage zones mylonites on the microscale? Jour. Struct. Geol., v.21, pp.711-718.
- MAMTANI, M.A., MUKHERJI, A. and CHAUDHURI, A.K. (2007) Microstructures in a Banded Iron Formation (Gua mine, India). Geol. Mag., v.144, pp.271-287.
- MAMTANI, M.A., KARANTH, R.V., MERH, S.S. and GREILING, R.O. (2000) Tectonic Evolution of the Southern Part of Aravalli Mountain Belt and its Environs: Possible Causes and Time Constraints. Gond. Res., v.3, pp.175-187
- MAMTANI, M.A., MERH, S.S., KARANTH, R.V. and GREILING, R.O. (2001) Time relationship between metamorphism and deformation in Proterozoic rocks of the Lunavada region, southern Aravalli mountain belt (India) - a microstructural study. Jour. Asian Earth Sci., v.19, pp.195-205.
- PANIGRAHI, M.K. and MOOKHERJEE, A. (1997). The Malanjkhand copper (+molybdenum) deposit, India: Mineralization from a low-temperature ore-fluid of granitoid affiliation. Mineralium Deposita, v.32, pp.133-148.
- PANIGRAHI, M.K., BREAM, B.R., MISRA, K.C. and NAIK, R.K. (2004) Age of granitic activity associated with copper-molybdenum mineralization at Malanjkhand, Central India. Mineralium Deposita, v.39, pp.670-677.
- PASSCHIER, C.W. and TROUW, R.A.J. (2005) Microtectonics. 2nd Edition, Springer-Verlag, Berlin, Heidelberg.
- PFIFFNER, O.A. and RAMSAY, J.G. (1982) Constraints on geological strain rates; arguments from finite strain states of naturally deformed rocks. Jour. Geophy. Res., v.87 (B1), pp.311-321.
- PIAZOLO, S., BONS, P.D., JESSELL, M.W., EVANS, L. and PASSCHIER, C.W. (2002) Dominance of microstructural processes and their effect on microstructural development: insights from numerical modeling of dynamic recrystallisation. In: S. de Meer, M.R. Drury, J.H.P. de Bresser and G.M. Pennock (Eds.), Deformation Mechanisms, Rheology and Tectonics: Current Status and Future Perspectives. Geol. Soc. London, Spec. Publ., no.200, pp.149-170.
- SEN, K., MAJUMDER, S. and MAMTANI, M.A. (2005) Degree of magnetic anisotropy as a strain intensity gauge in ferromagnetic granites. Jour. Geol. Soc., London, v.162, pp.583-586.
- SEN, K. and MAMTANI, M.A. (2006) Magnetic fabric, shape preferred orientation and regional strain in granitic rocks. Jour. Struct. Geol., v.28, pp.1870-1882.
- STEIN, H.J., HANNAH., J.L., ZIMMERMAN,A., MARKEY, R.J., SARKAR, S.C. and PAL, A.B. (2004) A 2.5 Ga porphyry Cu-Mo-Au deposit at Malanjkhand, central India: implications for Late Archean continental assembly. Precambrian Res., v.134, pp.189-226.
- STIPP, M., STUNITZ, H., HEILBRONNER, R. and SCHMID, S.M. (2002a) The eastern Tonale fault zone: a "natural laboratory" for crystal plastic deformation of quartz over a temperature range from 250 to 700°C. Jour. Struct. Geol., v.24, pp.1861-1884.
- STIPP, M., STUNITZ, H., HEILBRONNER, R. and SCHMID, S.M. (2002b) Dynamic recrystallisation of quartz: correlation between natural and experimental conditions. In: S. de Meer, M.R. Drury, J.H.P. de Bresser, and G.M. Pennock (Eds.), Deformation Mechanisms, Rheology and Tectonics: Current Status and Future Perspectives. Geol. Soc. London Spec. Publ. no.200, pp.171-190.
- TAKAHASHI, M., NAGAHAMA, H., MASUDA, T. and FUJIMURA, A. (1998) Fractal analysis of experimentally, dynamically recrystallized quartz grains and its possible application as a e & meter. Jour. Struct. Geol., v.20, pp.269-275.
- TWISS, R.J. and MOORES, E.M. (2007) Structural Geology, 2nd Edition,W.H. Freeman and Company, New York.
- VERNON, R.H. (2004) A Practial Guide to Rock Microstructure. Cambridge Univ. Press, Cambridge.
- VIGNERESSE, J.L. (2004) Rheology of a two-phase material with applications to partially molten rocks, plastic deformation and saturated soils. In: G.I. Alsop, R.E. Holdworth, K.J.W. McCaffrey and M. Hand (Eds.), Flow Processes in Faults and Shear Zones, Geol. Soc., London Spec. Publ., no.224, pp.79- 94.
- VIGNERESSE, J.L. (2008) Granitic batholiths: from pervasive and continuous melting in the lower crust to discontinuous and spaced plutonism in the upper crust. Trans. Royal Soc. Edinburgh: Earth Sci., v.97, pp.311-324.
- YEDEKAR, D.B., JAIN, S.C., NAIR, K.K.K. and DUTTA, K.K. (1990) The central Indian collision suture. Geol. Surv. India Spec. Publ., no.28, pp. 1-43.
- Fractal Analysis of Magnetite Grains - Implications for Interpreting Deformation Mechanism
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1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur – 721302, IN
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur – 721302, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 80, No 3 (2012), Pagination: 308-313Abstract
In the present study, the grain size (d) and shape of 225 magnetite grains, that crystallized at T>600°C in a syntectonic granite (Godhra Granite, India) are evaluated and implications of data to decipher deformation mechanism of magnetite are discussed. Fractal (ruler) dimension (D) analysis of magnetite grains is performed and it is demonstrated that they show fractal behaviour. Smaller magnetite grains tend to be more serrated than the larger ones, which is manifested in the higher fractal (ruler) dimension (D) of the former. Assuming a natural strain rate ranging between 10-10 s-1 and 10-14 s-1 , the grain size data fall dominantly in the dislocation creep field of the existing deformation mechanism map of magnetite for 630°C. However, SEM-EBSD studies reveal that subgrains are absent in the magnetite grains and they did not undergo dislocation creep. Thus it is inferred that the shape of magnetite grains was not controlled by dislocation creep. It is concluded that the higher serration and increased fractal dimension of finer magnetite grains implies the importance of diffusion creep as an important deformation mechanism at high-T for magnetite in polymineralic rocks.Keywords
Magnetite, Granite, Deformation Mechanism, Dislocation Creep, Diffusion Creep, Fractals.References
- ATKINSON, B.K. (1977) The kinetics of ore deformation: its illustration and analysis by means of deformation-mechanism maps. Geologiska Föreningens Förhandlingar, v.99, pp.186– 197.
- ETHERIDGE, M.A. (1983) Differential stress magnitudes during regional deformation and metamorphism: upper bound imposed by tensile fracturing. Geology, v.11, pp.231-234.
- FERRÉ, E., TEYSSIER, C., JACKSON, M., THILL, J.W. and RAINEY, E.S.G. (2003) Magnetic susceptibility anisotropy: A new petrofabric tool in migmatites. Jour. Geophys. Res., v. 108(B2), 2086, doi:10.1029/2002JB001790.
- GHIORSO, M.S. and SACK, R.O. (1991) Fe-Ti oxide geothermometry: thermodynamic formulation and the estimation of intensive variables in silicic magmas. Contrib. Mineral. Petrol., v.108, pp.485-510.
- GOPALAN, K., TRIVEDI, J.R., MERH, S.S., PATEL, P.P. and PATEL, S.G. (1979) Rb-Sr age of Godhra and related granites, Gujarat. Proc. Indian Acad. Sci. (Earth Planet. Sci.), v.88A, pp.7-17.
- GUPTA, S.N., MATHUR, R.K. and ARORA, Y.K. (1992) Lithostratigraphy of Proterozoic rocks of Rajasthan and Gujarat - a review. Rec. Geol. Surv. India, v.115, pp.63-85.
- HAGGERTY, S.E. (1991) Oxide textures - a mini-atlas. In: D.H. Lindsley, (Ed.), Oxide minerals: petrologic and magnetic significance. Reviews in Mineralogy, v.25, pp.129-220.
- HENNIG-MICHAELI, C. and SIEMES, H. (1982) Compression experiments on natural magnetite crystals at 200°C and 400°C at 400 MPa confining pressure. In: G.E. Goodman and F.E. Heuze (Eds.), Issues in Rock Mechanics, Twenty-Third Symposium on Rock Mechanics, Amer. Instt. Min. Metal. Petrol. Engineers, New York, pp. 380-388.
- HOUSEN, B.A., VAN DER PLUIJM, B.A. and ESSENE, E.J. (1995) Plastic behaviour of magnetite and high strains obtained from magnetic fabrics in the Parry Sound shear zone, Ontario Grenville Province. Jour. Struct. Geol., v.17, pp.265-278.
- KLETETSCHKA, G. and KONTNY, A. (2005) Identification of magnetic minerals by scanning electron microscope and application of ferrofluid. Studia Geophysica et Geodaetica, v.49, pp.153-162.
- KRUHL, J.H. (1996) Prism- and basal-plane parallel subgrain boundaries in quartz: a microstructural geothermobarometer. Jour. Metamorph. Geol., v.14, pp.581-589.
- KRUHL, J.H. and NEGA, M. (1996) The fractal shape of sutured quartz grain boundaries: application as a geothermometer. Geol. Rund., v.85, pp.38-43.
- MAJUMDER, S. and MAMTANI, M.A. (2009) Fractal analysis of quartz grain boundary sutures in a granite (Malanjkhand, central India) – impli-cations to infer regional tectonics. Jour. Geol. Soc. India, v.73, pp.309-319.
- MAMTANI, M.A. (2010) Strain-rate estimation using fractal analysis of quartz grains in naturally deformed rocks. Jour. Geol. Soc. India, v.75, pp.202-209.
- MAMTANI, M.A. and GREILING, R.O. (2005) Granite emplacement and its relation with regional deformation in the Aravalli Mountain Belt (India) - inferences from magnetic fabric. Jour. Struct. Geol., v.27, pp.2008-2029.
- MAMTANI, M.A. and GREILING, R.O. (2010) Serrated quartz grain boundaries, temperature and strain rate: testing fractal techniques in a syntectonic granite. In: I. Spalla, A.M. Marotta, G. Gosso (Eds), Advances in Interpretation of Geological Processes: Refinement of Multi-Scale Data and Integration in Numerical Modelling. Geol. Soc. London Spec. Publ. v.332, pp.35-48.
- MAMTANI, M.A., PIAZOLO, S., KONTNY, A., GREILING, R.O. and HROUDA, F. (2011) Process of magnetite fabric development during granite deformation. Earth Planet. Sci. Lett., v.308, pp.77-89.
- MANDELBROT, B.B. (1983) The fractal geometry of nature. Freeman, New York.
- MÜLLER, P. and SIEMES, H. (1972) Zur Festigkeit und Gefügeregelung von experimentell verformten Magnetiterzen (Strength and preferred orientation of experimentally deformed magnetite ores). Neues Jahrbuch für Mineralogie, Abhandlungen, v.117, pp.39-60.
- PASSCHIER, C.W. and TROUW, R.A.J. (2005) Microtectonics, 2nd Edition, Springer-Verlag, Berlin.
- SEN, K. and MAMTANI, M.A. (2006) Magnetic fabric, shape preferred orientation and regional strain in granitic rocks. Jour. Struct. Geol., v.28, pp.1870-1882.
- SEN, K., MAJUMDER, S. and MAMTANI, M.A. (2005) Degree of magnetic anisotropy as a strain intensity gauge in ferromagnetic granites. Jour. Geol. Soc., London, v.162, pp.583-586.
- SITZMAN, S.D., BANFIELD, J.F. and VALLEY, J.W. (2000) Microstructural characterization of metamorphic magnetite crystals with implications for oxygen isotope distribution. Amer. Mineral., v.85, pp.14-21.
- TAKAHASHI, M., NAGAHAMA, H., MASUDA, T. and FUJIMURA, A. (1998) Fractal analysis of experimentally, dynamically recrystallized quartz grains and its possible application as a e meter. Jour. Struct. Geol., v.20, pp.269-275.
- Quantification of Microcrack Anisotropy in Quartzite-A Comparison between Experimentally Undeformed and Deformed Samples
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1 Department of Geology & Geophysics, Indian Institute of Technology, Kharagpur-721302, West Bengal, IN
1 Department of Geology & Geophysics, Indian Institute of Technology, Kharagpur-721302, West Bengal, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 80, No 2 (2012), Pagination: 153-166Abstract
In this paper, microcrack patterns in a quartzite are quantified using fractal geometry based methods. Since the quartzite does not show a mesoscopic foliation, the fabric was recognized using anisotropy of magnetic susceptibility (AMS) analysis. Microcracks were investigated in thin sections prepared along the three principal planes of the AMS ellipsoid. Point load tests were performed on cores drilled parallel as well as perpendicular to the magnetic foliation. After experimental deformation, thin sections were prepared in two orientations - (a) parallel to the plane of failure (i.e., parallel to the direction of loading), (b) perpendicular to the plane of failure (i.e., perpendicular to the direction of loading), and microcrack patterns in these sections were investigated. The box-counting method of fractal analysis was first applied to microcracks traced from SEM images from each thin section of the experimentally undeformed as well as deformed samples to establish the fractal nature of the microcrack pattern. It was found that in thin sections perpendicular to the direction of loading, the box (fractal) dimension tends to marginally increase. This is inferred as a manifestation of the increase in complexity of the pattern. The software AMOCADO, which is based on the modified Cantor Dust method of fractal analysis, was applied to microcrack pattern from each thin section in order to quantify the pattern anisotropy. It is noted that the anisotropy significantly reduces in sections perpendicular to the loading direction. SEM data are presented to demonstrate that this reduction in anisotropy is on account of generation and/or growth of new cracks in random orientations. It is envisaged that the approach adopted in this investigation maybe useful in rock mechanics and mineral-resource applications in future.Keywords
Microcracks, SEM, Fractal, Anisotropy Quantification, Quartzite, Experimental Deformation, Anisotropy of Magnetic Susceptibility.References
- ASTM (2001) Standard practice for preparing rock core specimens and determining dimensional and shape tolerances. Designation D4543.
- ASTM (2001) Standard method for determination of the point load strength index of rock. Designation D5731.
- BABADAGLI, T. (2001) Fractal analysis of 2-D fracture networks of geothermal reservoirs in southwestern Turkey. Jour. Volcano. Geotherm. Res., v.112, pp.83-103.
- BABADAGLI, T. (2000) Evaluation of outcrop fracture patterns of geothermal reservoirs in southwestern Turkey. Proc. World Geothermal Congress, pp.2521-2526.
- BARTON, C.C. (1995) Fractal analysis of scaling and spatial clustering of fractures. In: C.C. Barton and P.R. La Pointe (Eds.), Fractals in the Earth Sciences. Plenum Press, New York, pp.141-178.
- BARTON, C.C. and LARSEN, R. (1985) Fractal geometry of two-dimensional fracture networks at Yucca Mountain, south-western Nevada. Proc. Internat. Symp. Fundamentals of Rock Joints, Bjorkliden, Sweden, pp.77-84.
- BASU, A. (2008) The point load test in rock material characterization. Jour. Engg. Geol., v.XXXV, pp.379-387.
- BASU, A. and AYDIN, A. (2006) Predicting uniaxial compressive strength by point load test: significance of cone penetration. Rock Mech. Rock Eng., v.39, pp.483-490.
- BASU, A. and KAMRAN, M. (2010) Point load test on schistose rocks and its applicability in predicting uniaxial compressive strength. Int. Jour. Rock Mech. Min. Sci., v.47, pp.823-828.
- BIENIAWSKI, Z.T. (1989) Engineering rock mass classifications. New York, Wiley.
- BLENKINSOP, T.J. and FERNANDES, T.R.C. (2000) Fractal characterization of particle size distributions in chromitites from the Great Dyke, Zimbabwe. Pure and Appl. Geophys., v.157, pp.505-521.
- BOBET, A. and EINSTEIN, H.H. (1998) Fracture coalescence in rocktype materials under uniaxial and biaxial compression. Int. Jour. Rock Mech. Min. Sci., v.35, pp.863-888.
- BOULLIER, A.M., CHAROY, B. and POLLARD, P.J. (1994) Fluctuation in porosity and fluid pressure during hydrothermal events: textural evidence in the Emuford District, Australia. Jour. Struct. Geol., v.16, pp.1417-1429.
- BRACE, W.F., SILVER, E., HADLEY, K. and GOETZE, C. (1972) A closer look at cracks and pores. Science, v.178, pp.162-163.
- BROCH, E. (1983) Estimation of strength anisotropy using the point-load test. Int. Jour. Rock Mech. Min. Sci. & Geomech. Abstr., v.20, pp.181-187.
- CELLO, G. (1997) Fractal analysis of a Quaternary fault array in the central Apennines, Italy. Jour. Struct. Geol., v.19, pp.945-953.
- CELLO, G., MARCHEGIANI, L. and TONDI, E. (2006) Evidence for the existence of a simple relation between earthquake magnitude and the fractal dimension of seismogenic faults: a case study from central Italy. In: G. Cello and B.D. Malamud (Eds.), Fractal Analysis for Natural Hazards. Geol. Soc. London, Spec. Publ., v.261, pp.133-140.
- CHAU, K.T. and WONG, R.H.C. (1996) Uniaxial compressive strength and point load strength. Int. Jour. Rock Mech. Min. Sci. Geomech. Abstr., v.33, pp.183-188.
- DEMARTIN, B., HIRTH, G. and EVANS, B. (2004) Experimental constraints on thermal cracking of peridotite at oceanic spreading centers. In: C.R. German, J. Lin, L.M. Parson (Eds.), Mid-oceanic ridges: hydrothermal interactions between the lithosphere and oceans. Geophysical Monograph Series, No.148, pp.167-186.
- GERIK, A. (2009) Modification and automation of fractal geometry methods: new tools for quantifying rock fabrics and interpreting fabric-forming processes. Unpublished Ph.D. thesis, Technische Universität München, 126 p.
- GERIK, A. and KRUHL, J.H. (2009) Towards automated pattern quantification: time-efficient assessment of anisotropy of 2D patterns with AMOCADO. Comp. & Geosci., v.35, pp.1087-1097.
- GERIK, A., KRUHL, J.H. and CAGGIANELLI, A. (2010) Quantification of flow patterns in sheared tonalite crystal-melt mush: application of fractal-geometry methods. Jour. Geol. Soc. India, v.75, pp.210-224.
- GHOSH M., MUKHOPADHYAY, D. and SENGUPTA, P. (2006) Pressure– temperature-deformation history for a part of the Mesoproterozoic fold belt in North Singhbhum, Eastern India. Jour. Asian Earth Sci., v.26, pp.555-574.
- GILLESPIE, P.A., HOWARD, C.D., WALSH, J.J. and WATTERSON, J. (1993) Measurement and characterisation of spatial distributions of fractures.Tectonophysics, v.226, pp.113-141.
- GOMEZ, L.A. and LAUBACH, S.E. (2006) Rapid digital quantification of microfracture populations. Jour. Struct. Geol., v.28, pp.408-420.
- HARRIS, C., FRANSSEN, R. and LOOSVELD, R. (1991) Fractal analysis of fractures in rocks: the Cantor’s dust method – comment. Tectonophysics, v.198, pp.107-111.
- HIRATA, T. (1989) Fractal dimension of fault systems in Japan: fractal structure in rock fracture geometry at various scales. Pure and Appl. Geophys., v.131, pp.157-170.
- HOEK, E. and BIENIAWSKI, Z.T. (1965) Brittle rock fracture propagation in rock under compression. Int. Jour. Frac. Mech., v.1, pp.137-155.
- HROUDA, F. (1993). Theoretical models of magnetic anisotropy to strain relationship revisited. Phys. Earth Planet. Inter., v.77, pp.237-249.
- ISAKOV, E., OGILVIE, S.R., TAYLOR, C.W. and GLOVER, P.W.J. (2001) Fluid flow through rough fractures in rocks. I: High resolution aperture determinations. Earth Planet. Sci. Lett., v.191, pp.267-282.
- ISRM (1985) Suggested method for determining point load strength. Int. Jour. Rock Mech. Min. Sci. Geomech. Abstr., v.22, pp.51-60.
- JELÍNEK, V. (1981) Characterization of the magnetic fabric of rocks. Tectonophysics, v.79, pp.T63-T67.
- KANAORI, Y., YAIRI, K. and ISHIDA, T. (1991) Grain boundary microcracking of granitic rocks from the northeastern region of the Atotsugawa fault, central Japan: SEM backscattered electron images. Engg. Geol., v.30, pp.221-235.
- KAYE, B.H. (1989) A random walk through fractal dimensions. VCH, Wienheim.
- KERN, H., IVANKINA, T.I., NIKITIN, A.N., LOKAJÍÈEK, T. and PROS, Z. (2008) The effect of oriented Microcracks and crystallographic and shape preferred orientation on bulk elastic anisotropy of a foliated biotite gneiss from Outokumpu. Tectonophysics, v.457. pp.143-149.
- KRANZ, R.L. (1983) Microcracks in rocks: a review. Tectono-physics, v.100, pp.449-480.
- KRUHL, J.H. and NEGA, M. (1996) The fractal shape of sutured quartz grain boundaries: application as a geothermometer. Geol. Rund., v.85, pp.38-43.
- LAVALLÉE, Y., MEREDITH, P.G., DINGWELL, D.B., HESS, K.-U., WASSERMANN, J., CORDONNIER, B., GERIK, A. and KRUHL, J.H. (2008) Seismogenic lavas and explosive eruption forecasting. Nature, v.453, pp.507-510.
- LLOYD, G.E. and HALL, M.G. (1981) Application of scanning electron microscopy to the study of deformed rocks. Tectonophysics, v.78, pp.687-698.
- MAMTANI, M.A. (2010) Strain-rate estimation using fractal analysis of quartz grains in naturally deformed rocks. Jour. Geol. Soc. India, v.75, pp.202-209.
- MAMTANI, M.A. and GREILING, R.O. (2010) Serrated quartz grain boundaries, temperature and strain rate: testing fractal techniques in a syntectonic granite. In: I. Spalla, A.M. Marotta, G. Gosso (Eds), Advances in Interpretation of Geological Processes: Refinement of Multi-Scale Data and Integration in Numerical Modelling. Geol. Soc. London Spec. Publ. v.332, pp.35-48.
- MAMTANI, M.A. and SENGUPTA, P. (2010) Significance of AMS analysis in evaluating superposed folds in quartzites. Geol. Mag., v.147, pp.910-918.
- MAMTANI, M.A. and VISHNU, C.S. (2012) Does AMS ellipsoid of micaceous quartzite provide information about shape of the strain ellipsoid? Int. Jour. Earth Sci., v.101, pp.693-703.
- MANDELBROT, B.B. (1983) The fractal geometry of nature. Freeman, New York, 461p.
- MICKLETHWAITE, S. (2009) Mechanisms of faulting and permeability enhancement during epithermal mineralisation: Cracow goldfield, Australia. Jour. Struct. Geol., v.31, pp.288-300.
- MOORE, D.E. and LOCKNER, D.A. (1995) The role of microcracking in shear-fracture propagation in granite. Jour. Struct. Geol., v.17, pp.95-111.
- MUKHOPADHYAY, D. and SENGUPTA, S. (1971) Structural geometry and time relation of metamorphic recrystallisation to deformation in the Precambrian rocks near Simulpal, Eastern India. Bull. Geol. Soc. America, v.82, pp.2251-2260.
- NAHA, K. (1965) Metamorphism in relation to stratigraphy, structure and movements in parts of east Singhbhum, eastern India. Quart. Jour. Geol. Min. Metal. Soc. India, v.37, pp.41-95.
- NARA, Y., KATO, H., YONEDA, T. and KANEKO, K. (2011) Determination of three-dimensional microcrack distribution and principal axes for granite using a polyhedral specimen. Int. Jour. Rock Mech. Min. Sci., v.48, pp.316-335.
- OGILVIE, S.R., ISAKOV, E. and GLOVER, P.W.J. (2006) Fluid flow through rough fractures in rocks. II: A new matching model for rough rock fractures. Earth Planet. Sci. Lett., v.241, pp.454-465.
- ORD, A. and HOBBS, B.E. (2011) Microfabrics as energy minimisers: Rotation recrystallisation as an example. Jour. Struct. Geol., v.33, pp.220-243.
- PANOZZO, R. (1987) Two-dimensional strain determination by the inverse SURFOR wheel. Jour. Struct. Geol., v.9, pp.115-119.
- PASSCHIER, C.W. and TROUW, R.A.J. (2005) Microtectonics, 2nd Edition, Springer-Verlag, Berlin.
- PATERSON, M.S. and WONG, T-F. (2005) Experimental Rock Deformation – The Brittle Field. 2nd Edition, Springer, Berlin.
- PÉREZ-LÓPEZ, R., PAREDES, C. and MUÑOZ-MARTÍN, A. (2005) Relationship between the fractal dimension anisotropy of the spatial faults distribution and the paleostress fields on a Variscan granitic massif (Central Spain): the F-parameter. Jour. Struct. Geol., v.27, pp.663-677.
- PIAZOLO, S. and PASSCHIER, C.W. (2002) Controls on lineation development in low to medium grade shear zones: a study from the Cap de Creus peninsula, NE Spain. Jour. Struct. Geol., v.24, pp.25-44.
- RAGHAVAN, R. and CHIN, L.Y. (2004) Productivity Changes in Reservoirs With Stress-Dependent Permeability. SPE Reservoir Evaluation and Engineering v.7, pp.308-315.
- SAHA, A.K. (1994) Crustal evolution of Singhbhum–North Orissa, Eastern India. Mem. Geol. Soc. India, no.27, 341p.
- SPRUNT, E. and BRACE, W.F. (1974) Direct observation of microcavities in crystalline rocks. Int. Jour. Rock Mech. Min. Sci. Geomech. Abstr. 11, 139-150.
- STANFORS, R., RHÉN, I., TULLBORG, E.-L. and WIKBERG, P. (1999) Overview of geological and hydrogeological conditions of the Äspö hard rock laboratory site. App. Geochem., v.14, pp.819-834.
- TAKAHASHI, M., NAGAHAMA, H., MASUDA, T. and FUJIMURA, A. (1998) Fractal analysis of experimentally, dynamically recrystallized quartz grains and its possible application as a ε meter. Jour. Struct. Geol., v.20, pp.269-275.
- TAPPONNIER, P. and BRACE, W.F. (1976) Development of stress-induced microcracks in Westerly Granite. Int. Jour. Rock Mech. Min. Sci. Geomech. Abstr., v.13, pp.103-112.
- TARLING, D.H. and HROUDA, F. (1993) The Magnetic Anisotropy of Rocks. Chapman and Hall, London.
- TIMMS, N.E., HEALY, D., REYES-MONTES, J.M., COLLINS, D.S., PRIOR, D.J. and YOUNG, R.P. (2010) Effects of crystallographic anisotropy on fracture development and acoustic emission in quartz, Jour. Geophys. Res., v.115, B07202, doi:10.1029/2009JB006765.
- TRAN, N.H. and RAVOOF, A. (2007) Coupled fluid flow through discrete fracture network: a novel approach. Int. Jour. Math. Comp. in Simulation, v.1, pp.295-299.
- TRIPP, G.I. and VEARNCOMBE, J.R. (2004) Fault/fracture density and mineralization: a contouring method for targeting in gold exploration. Jour. Struct. Geol., v.26, pp.1087-1108.
- VELDE, B., DUBOIS, J., TOUCHARD, G. and BADRI, A. (1990) Fractal analysis of fractures in rocks: the Cantor’s Dust method. Tectonophysics, v.179, pp.345-352.
- VELDE, B., DUBOIS, J., MOORE, D. and TOUCHARD, G. (1991) Fractal patterns of fractures in granites. Earth Planet. Sci. Lett., v.104, pp.25-35.
- VISHNU, C.S., MAMTANI, M.A. and BASU, A. (2010) AMS, ultrasonic P-wave velocity and Rock Strength analysis in quartzites devoid of mesoscopic foliations – implications for rock mechanics studies. Tectonophysics. v.494, pp.191-200.
- VOLLAND, S. and KRUHL, J.H. (2004) Anisotropy quantification: the application of fractal geometry methods on tectonic fracture patterns of a Hercynian fault zone in NW Sardinia. Jour. Struct. Geol., v.26, pp.1499-1510.