Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

K. S. Misra ¹, M. R. Hammond ², Anant V. Phadke ³, Fiona Plows ⁴, U. S. N. Reddy ⁵, I. V. Reddy ⁵, Fareeduddin ⁶, G . Parthasarathy ⁷, C. R. M. Rao ⁵, B. N. Gohain ⁸, Dinesh Gupta ⁹

Affiliations
1 Geological Survey of India, Seminary Hills, Nagpur, IN
2 Stanford University, San Fransisco, US
3 Pune University, Pune, IN
4 Cihergen Biosystesms, San Fransisco, US
5 Geological Survey of India, Hyderabad, IN
6 Geological Survey of India, AMSE Wing, Bangalore, IN
7 National Geophysical Research Institute, Hyderabad - 500007, IN
8 Seminary Hills, Nagpur, IN
9 Geological Survey of India, Jaipur, IN

Abstract

The black carbonaceous slates, interbedded within the Proterozoic volcano-Sedimentary sequence of Cuddapah Supergroup in the vicinity of Mangampeta are found to the fullerene bearing and belonging to the shungite suite of rocks. Presence of fullerene in powdered rock samples is identified from the characteristic spectra obtained by laser desorption/Ionization spectrometry. This is further confirmed by making soxhlet extract using toluene and exposing it to different laser powers to avoid any possibility of it being analytical artifact. Both carbon allotrope fullerene C₆₀ and C₇₀ are identified within these rocks. Two geological samples collected from the prominent rock units within this thick sequence of black carbonaceous unit belonging to the shungite suite of rock are found to have fullerenes. This reporting of fullerene is first of its kind from any geological material from India. The only other occurrence of fullerenes in geological samples is recorded from the Shunga locality of the Karelean province of Russia.

Keywords

Fullerenes, Shungite, Carbonaceous Slate, Barite, Mangampeta, Cuddapah District, Andhra Pradesh.

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Suresh Kharkhanis ¹, K. S. Misra , M. R. Hammond , Anant V. Phadke , Fiona Plows , U. S. N. Reddy , I. V. Reddy , Fareeduddin , G. Parthasarathy , C. R. M. Rao , B. N. Gohain , Dinesh Gupta

Affiliations
1 Analytical Research Laboratory, Department of Polymer and Petroleum Engineering, MIT Engineering College, Kothrud, Pune - 411 038, IN

Abstract

No Abstract.

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K. S. Misra ¹

Affiliations
1 Geological Survey of India, Central Region, Nagpur - 440 006, IN

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No Abstract.

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S. Viswanathan ¹, P. Jagadeesan ², K. S. Misra ², P. V. Ramesh Babu ³

Affiliations
1 Flat B-203, Block-B, United Avenue Apartments, South End, 7- 1-29, Ameerpet, Hyderabad- 500 016, IN
2 Atomic Minerals Directorate for Exploration and Research, Civil Lines, Nagpur -440 001, IN
3 Atomic Minerals Directorate for Exploration and Research, Begumpet, Hyderabad - 500 016, IN

Abstract

No Abstract.

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R. V. Karanth ¹, Y. Sreedhar Murthy ², A. V. Phadke ³, K. S. Misra ⁴, R. Bhutani ⁴, R. Sonp ⁴

Affiliations
1 Department of Geology, M S University of Baroda, Vadodara - 390 002, IN
2 Centre of Exploration Geophysics, Osmania University, Hyderabad - 500 007, IN
3 Flat No 108, Devdatta Kripa Co-Op Hsg Society, 45/4 Karvenagar, P O Navasahyadri, Pune - 4 1 1 052, IN
4 Geological Survey of India, Bandlaguda, Hyderabad - 500 068, IN

Abstract

No Abstract.

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K. S. Misra ¹, R. Bhutani ¹, R. Sonp ¹

Affiliations
1 Geological Survey of India, Alandi Road, Pune - 41 1 006, IN

Abstract

Seismogeological features in Kutch and adjoining region are mapped by using Indian Remote Sensing Satellite (IRS) images. These features included major faults with neotectonic movements, lithological units, statistical data of past seismic events and aftershock study to prepare various thematic maps. Studies suggest that faults identified as lineament zones are parallel to major geological structures such as Kutch rift, Cambay structure, Narmada-Tapti tectonic zone and Kukdi-Ghod lineament zone. Drilling data indicates that subsidence along the vertical boundary faults is continuing since Mesozoic Era Geomorphological evidences such as relief changes along straight lines, inundation patterns, extent of salt pans and dune fields etc suggest that the subsidence is also continuing presently. Regional studies in western India have indicated that these faults outline different crustal blocks which are moving either in vertical or strike-Slip direction in relation to each other. Higher seismicity is recorded in areas where lineament zones are intersecting each other. The study has revealed that obstruction of horizontally moving block by vertically moving block causes nucleation of stresses and sudden release of these stresses generally results in an earthquake. Epicential plots have also indicated that seismicity is conspicuously confined along faults related to major geological structures. The epicenters of all five major devastating earthquakes including the 26^th January 2001 earthquake are located very close to the intersection of Kutch Mainland fault, and NW-SE trending faults parallel to Cambay structure.

An interesting relationship has also emerged between the isoseismal lines due to the 26^th January 2001 earthquake and fabric of mapped faults. These lines show remarkable parallelism with the faults, related either to the Cambay structure or Kutch rift of the region. Preferential activation of faults parallel to Cambay structure seems to have caused damage along the linear zone passing through Ahmedabad and along the coast in the vicinity of Bharuch, Surat, Navasari and Billimora. The epicenters of aftershock following 26^th January earthquake are also plotted on a map depicting the faults. It has been found from that all the aftershocks of magnitude > 5 and 70% of those ranging between magnitude 3 to 5 are confined in an area resembling a horseshoe pattern with a pointed end towards NE. Other 20% of aftershocks of magnitude 3 to 5 are enclosed within almost parallel boundary. Only 10% are found beyond this limiting line. Furthermore, 50% of recorded aftershocks have taken place within first week of the main event and this study has revealed that the characteristic pattern of aftershock activity could emerge with only one week data.

A funnel shaped seismogeological model is proposed after the detailed study of major faults and seismic events in western India mainly covered by the Deccan volcanics. The widest area forming the rim is characterized by subterranean sounds and ground shaking at shallower depths. This is followed by a zone of periodic swarm type of seismic activity, marked by low magnitude (2-4) earthquakes. Less common, medium magnitude (4 1-6) earthquakes occur at depth range of 4 to 9 km. High magnitude (> 6) earthquakes are rare and generally occur at focal depth of 9 to 35 km and occupy the central part of the area.

Keywords

Seismotectonics, Remote Sensing, Bachau, Kutch Region, Gujarat.

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K. S. Misra ¹

Affiliations
1 Geological Survey of India, Alandi Road, Phulenagar, Pune - 41 1 006, IN

Abstract

Interpretation of remotely sensed and field data has brought out an integrated arterial system comprising lava tubes and channels, through which molten basaltic lava seems to have flowed to long distances in thc Deccan Trap of western Maharashtra and southern Madhya Pradesh. Remnants of lava tubes and channels are identified at morc than two hundred places in the study arca, covering 120,000 km². The lava tubes and channcls are demarcated by their unique sinuous shapes and positive rclicf based on remotely sensed data. In the field, they are recognized by their tubular outline, which is invariably composed of reddened fragmentary volcanic material, encasing dark greyish basalt having uniquc textures. The diameter of lava tubcs and width of clianncls arc much larger within the study area than those reported from the Quaternary and Recent volcanics in different parts of the world which suggests very high effusive rates during Deccan volcanism. Mostly these tubular structures are filled by solidified lava suggesting that flow gradients were very low and therefore withdrawal of' molten lavas has not taken place. Mostly they are confined to the compound flow secluences and are rarely seen within the simple flows. These remnants are predominantly exposed between 200 m and 800 m elevations and arc locatcd at higher elevations in thc western part of the study area and at successively lower levels in the easterly direction. This indicates that block faulting controlled by en echelon basement faults, was largely resportsible for down faulting of successive blocks in the easterly direction.

Keywords

Deccan Volcanics, Lava Tubes and Channels, Lava Transportation, Remote Sensing, Western India.

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S. Viswanathan ¹, K. S. Misra ², Gauri Dole ³, Ninad Bondre ⁴, Raymond A. Duraiswami ⁵, Vivek S. Kale ⁶

Affiliations
1 10, Bapuji Apts., Rajendra Prasad Raod, Dombivli (East) - 421 201, IN
2 Geological Survey of India, Alandi Road, Phule Nagar, Pune - 411 006, IN
3 238, Narayan Felli, Pune, 411 030, IN
4 114 Shideler Hall, Department of Geology, Miami University, Oxford, Ohio 45056, US
5 A16 Gurudut Housing Society, Srinagar, Kalewadi Phatta, Rahatani, Pune - 411 017, IN
6 Kalyani Net Ventures Ltd., Pune, IN

Abstract

No Abstract.

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