A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Sen, Bibhas
- Flow-Types and Lava Emplacement History of Rajahmundry Traps, West of River Godavari, Andhra Pradesh
Authors
1 Geological Survey of India, Alandi Road, Pune - 411 006, IN
2 Geological Survey of India, Arera Colony, Ravi Shankar Nagar, Bhopal - 462 016, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 78, No 5 (2011), Pagination: 457-467Abstract
Rajahmundry Traps has been under geo-scientific investigations for over half a century; yet sketchy information is available on morphology and internal architecture of lavas. This study bridges this gap by describing the morphology of lava pile of Duddukuru area following Hawaiian scheme that relates a lava-type with a particular emplacement style.
The lowest flow (Flow 1) at Duddukuru, overlying an infra-trappean bed is a thick pahoehoe sheet lobe with intermittent basal hummocky, P-type pahoehoe lobes representing slow, sub-aerial emplacement of lava parcels. Some of them also have cherty intercalations and morphology suggestive of possible interaction of lava with water or water-laden sediments. Hummocky lobes were over-ridden by subaerial emplacement of voluminous sheet lava, which developed multi-tier columnar joints probably due to inundation of lava-surface by water. Inter-trappean sediments were deposited above Flow 1 in the ensuing period of volcanic quiescence. The eruptive history of Duddukuru ended with sub-aerial outpouring of two consecutive a'a flows (Flows 2 and 3) separated by a thin red bole horizon.
As pahoehoe lavas are known to travel long distances due to emplacement through thermally efficient mechanism of endogenous inflation and insulated melt transport whereas a'a lavas, in contrast, are cooling-limited flows which rarely attain lengths covered by pahoehoe lavas; it is probable that the pahoehoe and a'a flows of Duddukuru have not traveled comparable distances. A'a flows of Rajahmundry Traps traveling from far-off vents are, therefore, more unlikely despite temporal and chemical similarity of this lava-pile with upper parts of Western Deccan Basalt Group.
Keywords
Rajahmundry Traps, Flow-Types, Pahoehoe, a'a, Lava Emplacement, Andhra Pradesh.References
- AGHASE, L.V. and GUPTE, R.B. (1968) Some significant features of the Deccan Traps. Mem. Geol. Soc. India, v.2, pp.309-311.
- AUBELE, J.C., CRUMPLER, L.S. and ELSTON, W.E. (1988) Vesicle zonation and vertical structure of basalt flows. Jour. Volcanol. Geotherm. Res., v.35, pp.349-374.
- BAKSI, A.K. (2001) The Rajahmundry Traps, Andhra Pradesh: Evaluation of their petrogenesis relative to the Deccan Traps. Proc. Indian Acad. Sci. (Earth Planet. Sci.)., v.110, pp.397-407.
- BAKSI, A.K., BYERLY, G.R., CHAN, L-H. and FARRAR, E. (1994) Intracanyon flows in the Deccan Province, India? Case history of the Rajahmundry Traps. Geology, v.22, pp.605-608.
- BEANE, J.E., TURNER, C.A., HOOPER, P.R., SUBBARAO, K.V. and WALSH, J.N. (1986) Stratigraphy, composition and form of the Deccan Basalts, Western Ghats, India. Bull. Volcanol., v.48, pp.61-63.
- BODAS, M.S., KHADRI, S.F.R. and SUBBARAO, K.V. (1988) Stratigraphy of the Jawhar and Igatpuri Formations, Western Ghat Lava pile, India. In: K.V. Subbarao (Ed.), Deccan Flood Basalts. Mem. Geol. Soc. India, no.10, pp.235-252.
- BONDRE, N.R., DURAISWAMI, R.A. and DOLE, G. (2004) Morphology and emplacement of flows from the Deccan Volcanic Province, India. Bull. Volcanol., v.66, pp.29-45.
- BROWN, D.J. and BELL, B.R (2007) How do you grade peperites? Jour. Volcanol. Geotherm. Res., v.159, pp.409-420.
- BUCHER, C.J., CASHMAN, K.V. and PLANKE, S. (1993) Data report: physical and magnetic characterization of aa and pahoehoe flows: Hole 990A. In: H.C. Larsen, R.A. Duncan and K. Brooks (Eds.), Proc. ODP, Sci. Results, v.163, pp.41-49.
- DEGRAFF, J.M. and AYDIN, A. (1987) Surface morphology of columnar joints and its significance to mechanics and direction of joint growth. Geol. Soc. Amer. Bull, v.99, pp.605-617.
- DURAISWAMI, R.A. (2009) Pulsed inflation in the hummocky lava flow near Morgaon, western Deccan Volcanic Province and its significance. Curr. Sci., v.97, pp.313-316.
- DURAISWAMI, R.A., DOLE, G. and BONDRE, N. (2003) Slabby pahoehoe from the western Deccan Volcanic Province: evidence for incipient pahoehoe-aa transitions. Jour. Volcanol. Geotherm. Res., v.121, pp.195-217.
- GHOSH, P., SAYEED, M.R.G., ISLAM, R. and HUNDEKARI, S.M. (2006) Inter-basaltic clay (bole bed) horizons from Deccan traps of India: Implications for palaeo-weathering and palaeo-climate during Deccan volcanism. Palaeogeo., Palaeoclimat., Palaeoeco., v.242, pp.90-109.
- GODBOLE, S.M., RANA, R.S. and NATU, S.R. (1996) Lava stratigraphy of Deccan basalts of Western Maharashtra. Gondwana Geol. Mag., Spec. Pulb., v.2, pp.125-135.
- GSI (1994) Geological quadrangle map of Phaltan Quadrangle, Maharashtra (47 K), Government of India publication, Calcutta.
- GSI (2000) District resource map of East Godavari District, Andhra Pradesh, Government of India publication, Calcutta.
- GSI (2002) District resource map of West Godavari District, Andhra Pradesh, Government of India publication, Kolkata.
- HELIKER, C. and MATTOX, T.N. (2003) The first two decades of the Pu'u 'O'o-Kupaianaha Eruption: Chronology and Selected Bibliography. U.S.Geological Survey Professional Paper 1676, pp.1-28.
- HON, K., KAUAHIKAUA, J.P., DENLINGER, R. and MACKAY, K. (1994) Emplacement and inflation of pahoehoe sheet flows: observations and measurements of active lava flows on Kilauea, Hawaii. Geol. Soc. Amer. Bull., v.106, pp.351-370.
- JAY, A.E. and WIDDOWSON, M. (2008) Stratigraphy, structure and volcanology of southeast Deccan continental flood basalt province: implication for eruptive extent and volumes. Jour. Geol. Soc. London, v.165, pp.177-188.
- KESZTHELYI, L., SELF, S. and THORDARSON, TH. (1999) Applications of recent studies on the emplacement of basaltic lava flows to the Deccan Traps. Mem. Geol. Soc. India, v.43, pp.485-520.
- KNIGHT, K.B., RENNE, P. R., HALKETT, A. and WHITE, N. (2003) 40Ar/39Ar dating of the Rajahmundry Traps, Eastern India and their relationship to the Deccan Traps. Earth Planet. Sci. Lett., v.208, pp.85-99.
- KNIGHT, K.B., RENNE, P.R., BAKER, J., WAIGH, T. and WHITE, N. (2005) Reply to '40Ar/39Ar dating of the Rajamundry Traps, Eastern India and their relationship to the Deccan Traps: Discussion by A.K. Baksi. Earth Planet. Sci. Lett., v.239, pp.374-382.
- LAKSHMINARAYANA, G., MANIKYAMBA, C. and KHANNA T.C. (2010) New observations on Rajahmundry Traps of the Krishna-Godavari Basin. Geol. Soc. India. v.75, pp.807-819.
- LIPMAN, P.W. and BANKS, N.G. (1987) A'a flow dynamics, Mauna Loa 1984. U.S. Geol. Surv., Prof. Paper 1350, pp.1527-1567.
- LONG, P.E. and WOOD, B.J. (1986) Structures, textures and cooling histories of Columbia River basalt flows. Geol. Soc. Am. Bull. v.97, pp.1144-1155.
- LYLE, P.( 2000) The eruption environment of multi-tier columnar basalt lava flows. Jour. Geol. Soc. London, v.157, pp.715- 722.
- MACDONALD, G.A. (1953) Pahoehoe, aa and block lava. Amer. Jour. Sci. v.251, pp.169-191.
- MOHAPATRA, B.K. and NAIR, K.K.K. (1996) Some observations on bole beds in Deccan Traps. Gondwana Geol. Mag. Spec. Vol., no.2, pp.531-534.
- NAGESHWARA RAO, P.V., SWAROOP, P.C. and RANGA RAO, V. (2008) Geochemistry and origin of basalt flows of Rajahmundry area, Andhra Pradesh, Southeast India. Gondwana Geol. Magz., v.23, pp.91-102.
- PASCOE, E.H. (1964) A manual of the Geology of India and Burma,v.III, Govt. of India Press, Calcutta.
- PETERSON, D.W. and TILLING, R. I. (1980) Transition of basaltic lava from pahoehoe to aa, Kilauea Volcano, Hawaii: field observations and key factors. Jour. Volcanol. Geotherm. Res., v.7, pp.271-293.
- RAJARAO, C.S. (1984 a) The thickness of Deccan Trap. Geol. Surv. India. Spec. Publ., no.14, pp.1-5.
- RAJARAO, C.S. (1984b) The geological control for formation of laterite in western Maharashtra; Geol. Surv. India Spec. Publ., no.14, pp.262-265.
- RAJU, D.S.N., JAIPRAKASH, B.C. and KUMAR, A. (1996) Palaeo-environmental set-up and age of basin floor just prior to the spread of Deccan volcanism in the Krishna-Godavari Basin, India. Mem. Geol. Soc. India, no.37, pp.285-295.
- ROWLAND, S.K. and WALKER, G.P.L. (1990) Pahoehoe and aa in Hawaii: volumetric flow rate controls the lava structure. Bull. Volcalnol., v.52, pp.615-628.
- SELF, S., KESZTHELYI, L. and THORDARSON, T. (1998) The importance of pahoehoe. Annu. Rev. Earth Planet. Sci. v.26, pp.81-110.
- SELF, S., JAY A. E., WIDDOWSON, M. and KESZTHELYI, L. P. (2008) Correlation of the Deccan and Rajahmundry Trap lavas: Are these the longest and largest lava flows on Earth? Jour. Volcanol. Geotherm. Res., v.172, pp.3-19.
- SEN, B., SABALE, A.B., MISRA, K.S. and LAKSHMINARAYANA, G. (2007) Morphology and internal heterogeneity of flows of Rajahmundry Traps, West Bank of the Godavari River, Andhra Pradesh (abstract). Workshop and Group Discussion on Cretaceous Volcanicity: Its petrologic and geodymanic implications; SDM College of Engineering and Technology, Dharwad, India, pp.10-11.
- SOULE, S.A. and CASHMAN, K.V. (2005) Shear rate dependence of the pahoehoe-aa transition: Analogue experiments. Geology, v.33, pp.361-364.
- SUBBARAO, K.V. and PATHAK, S. (1993) Reversely magnetized flows, Rajahmundry, Andhra Pradesh. Jour. Geol. Soc. India, v.41, pp.71-72.
- SWANSON, D.A. and WRIGHT, T.L. (1981) The regional approach to studying the Columbia River Basalt Group. Mem. Geol. Soc. India, no.3, pp.58-80.
- VANDAMME, D. and COURTILLOT, V. (1992) Paleomagnetic constraints on the structure of the Deccan Traps. Phys. Earth Planet. Interiors., v.74, pp.241-261.
- WAICHEL, B.L., DE LIMA, E.F., LUBACHESKY, R. and SOMMER, C.A. (2006) Pahoehoe flows from the central Parana Continental Flood Basalts. Bull. Volcanol., v.68, pp.599-610.
- WALKER, G.P.L. (1971) Compound and simple lava flows and flood basalts, In: U. Aswathanarayana (Ed.), Deccan Trap and Other Flood Eruptions, Part I. Bull. Volcanol. v.35, pp.579-590.
- WIDDOWSON, M., WALSH, J.N. and SUBBARAO, K.V. (1997) The geochemistry of Indian bole horizons: palaeoenvironmental implications of Deccan intravolcanic palaeosurfaces: Recognition, Reconstruction and Palaeoenvironmental Interpretation. Geol. Soc. Spec. Publ. no.120, pp.269-281.
- WILKINS, A., SUBBARAO, K.V., INGRAM, G. and WALSH, J.N. (1994) Weathering regimes within the Deccan Basalts. In: K.V. Subbarao (Ed.), Volcanism. Wiley Eastern Limited, New Delhi. pp.217-231.
- WILMOTH, R.A. and WALKER, G.P.L. (1993) P-type and S-type pahoehoe: a study of vesicle distribution patterns in Hawaiian lava flows. Jour. Volcanol. Geotherm. Res., v.55, pp.129- 142.
- Lava Channel of Khedrai Dam, Northeast of Nasik in Western Deccan Volcanic Province: Detailed Morphology and Evidences of Channel Reactivation
Authors
1 Geological Survey of India, Pune - 4110 06, IN
2 Geological Survey of India, Bhopal-462016, IN
3 Geological Survey of India, Mangalore - 575 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 80, No 3 (2012), Pagination: 314-328Abstract
The 120 m-wide Khedrai Dam lava channel is one of the widest recorded in the Deccan Volcanic Province. Like many recent ones, this channel also has a pair of linear marginal levees made of breccia and confines the channelfill lava. It is resting over a pahoehoe flow (substrate) of basalt studded with plagioclase megacrysts, also known as the Giant Plagioclase Basalt (GPB). The channel-fill lava, which makes the lining at the edges and basal portion of the channel, is a comb-layered basalt (Cl-B) characterized by alternating layers rich in curved, branching augite crystals and laths of plagioclase - a texture indicative of high order of supercooling and rapid cooling rates. The dominant and centrally filling lava of this channel is a plagioclase-phyric basalt (Pp-B) that has a wide variation in phenocryst number from megacryst-poor to megacryst-rich. Occurrence of centimetre to decimetre size angular fragments of Cl-B within Pp-B fill indicates mechanical dislodgements of channel-lining by flowing lava. This also suggests that the channel was reactivated before it finally lost its hydraulic gradient and solidified.Keywords
Deccan Volcanic Province, Lava Channel, Comb Layered Basalt, Channel Reactivation.References
- BEANE, J. E. and HOOPER, P. R. (1988) A note on the Picrite Basalts of the Western Ghats, Deccan Traps, India, In: K.V. Subbarao (Ed.), Deccan Flood Basalts. Mem. Geol. Soc. India, no.10, pp.117-133.
- BEANE, J.E., TURNER, C.A., HOOPER, P.R., SUBBARAO, K. V. and WALSH, J.N. (1986) Stratigraphy, composition and form of the Deccan Basalts, Western Ghats. India, Bull. Volcanol., v.48, pp.61-63.
- BODAS, M.S., KHADRI, S.F.R. and SUBBARAO, K.V. (1988) Stratigraphy of the Jawhar and Igatpuri Formations, Western Ghat Lava pile, India. In: K.V. Subbarao (Ed.), Deccan Flood Basalts. Mem. Geol. Soc. India, no.10, pp.235-252.
- BODAS, M.S. (1990) Stratigraphy and petrogenesis of Deccan lavas, parts of the Western Ghats, India. Unpubld. Ph.D. Thesis, Indian Institute of Technology, Bombay.
- BONDRE, N.R., DOLE, G., PHADNIS, V.M., DURAISWAMI, R. A. and KALE, V.S. (2000) Inflated pahoehoe lavas from the Sangamner area of the western Deccan Volcanic Province. Curr. Sci., v.78, pp.1004-1007.
- BONDRE, N.R., DURAISWAMI, R.A. and DOLE, G. (2004) Morphology and emplacement of flows from the Deccan Volcanic Province. Bull. Volcanol., v.66, pp.29- 45.
- CALVARI, S., and PINKERTON, H. (1998) Formation of lava tubes and extensive flow field during the 1991993 eruption of Mount Etna. Jour. Geophys. Res., v.103, pp.27291-27301.
- CHENET, A.L., QUIDELLEUR, X., FLATEAU, F., COURTILLOT, V. and BAJPAI, S. (2007) 40Kr-40Ar dating of the Main Deccan large igneous province: Further evidence of KTB age and short duration. Earth Planet. Sci. Lett., v.263, pp.1-15.
- DURAISWAMI, R.A., BONDRE, N.R., DOLE, G., PHADNIS, V.M., and KALE, V.S. (2004) Possible lava tube system in a hummocky lava flow at Daund, western Deccan volcanic province, India. Proc. Indian Acad.Sci (Earth Planet. Sci.) v.113, pp.819-830.
- DURAISWAMI, R.A., DOLE, G., and BONDRE, N.R. (2005) The Songir structure: Inflated lava flow or tube? Jour. Geol. Soc. India, v.65, pp.357-365.
- GARRY, W.B., GREGG, T.K.P., SOULE, S.A. and FORNARI, D.J. (2006) Formation of submarine lava channel textures: Insights from laboratory simulations. Jour. Geophys. Res. v.111, B03104, doi: 10.1029/2005JB003796.
- GARRY, W.B. (2006) Emplacement of channeled flows in subaerial, submarine, simulated and extraterrestrial environments. Unpub. Ph.D. dissertation, The State University of New York at Buffalo, USA.
- GIOIA, G., CHAKRABORTY, P., and SUSAN KIEFFER, S. (2006) Lava channel formation via the viscoplastic indentation of hot substrates. Geophys. Res. Lett., v.33, L19305, doi:10.1029/2006GL027248.
- GODBOLE, S.M., RANA, R.S. and NATU, S. R. (1996) Lava stratigraphy of Deccan basalts of Western Maharashtra. Gondwana Geol. Mag. Spl. v.2, pp.125-135.
- GREELEY, R. (1972) Additional observations of actively forming lava tubes and associated structures, Hawaii. Modern Geology, v.3, pp.157-160.
- GREELEY, R. (1987) The role of lava tubes in Hawaiian volcanoes. USGS Prof. Paper-1350, pp.1584-1602.
- GREELEY, R., FAGENTS, S. A., HARRIS, R.S., KADEL, S.D., WILLIAMS, D.A. and GUEST, J.E. (1998) Erosion by flowing lava: Field evidence. Jour.Geophys. Res., v.103, pp. 27325-27345.
- GRIFFITHS, R.W. (2000) The dynamics of lava flows. Annu. Rev. Fluid. Mech. v.32, pp.477-518.
- GSI (1989) Quadrangle Geological Map 46 L (Dhule Quadrangle). Geol. Surv. India Publ.
- HIGGINS, M.D. and CHANDRASHEKHRAM, D. (2007) Nature of Sub-volcanic Magma Chambers, Deccan Province, India: Evidence from Quantitative Textural Analysis of Plagioclase Megacrysts in the Giant Plagioclase Basalts; Jour. Petrol., v.48, pp.885-900.
- HON. K., KAUAHIKAUA, J., DENLINGER, R. and MACKAY, K. (1994) Emplacement and inflation of pahoehoe sheet flows: Observations and measurements of active lava flows on Kilauea Volcano, Hawaii. Geol.Soc. Amer. Bull. v.106, pp.351-370.
- HOOPER, P.R., SUBBARAO, K.V. and BEANE, J. E. (1988) The Giant Plagioclase Basalt (GPBs) of the Western Ghats, Deccan Traps. In: K.V. Subbarao (Ed.), Deccan Flood Basalts. Mem. Geol. Soc. India, no.10, pp.135-144.
- JAFRI, S.H., SHAILAJA, V. and RAMESH, S.L. (2007) Occurrence of quench plagioclase and pyroxene crystals in Sitagota Mafic Volcanics of Dongargarh Supergroup, Central India. Jour. Geol. Soc. India, v.70, pp.787-792.
- KAUAHIKAUA, J., SHERROD, D.A., CASHMAN, K.V., HELIKER, C., HON, K., MATTOX, T.N. and JHONSON, J.A. (2003) Hawaiian lavaflow dynamics during the Puu-Oo-Kupaianaha eruption: A tale of two decades. USGS Prof. Paper-1676, pp.63-88.
- KESZTHELYI, L. and SELF, S. (1998) Some physical requirements for the emplacement of long basaltic flows. Jour. Geophy. Res., v.103, pp.27447-27464.
- KESZTHELYI, L., SELF, S. and THORDARSON, TH. (1999) Application of recent studies on the emplacement of basaltic lava flows to the Deccan Traps. Mem. Geol. Soc. India, no.43, pp.485-520.
- KHADRI, S.F.R. (1989) Flow Stratigraphy, Geochemistry and Plaleomagnetism of a part of the Western Deccan Basalt Province, Maharashtra, India. Unpub. Ph.D. Thesis, Indian Institute of Technology, Bombay.
- KHADRI, S.F.R., SUBBARAO, K.V., HOOPER, P.R. and WALSH, J.N. (1988) Stratigraphy of Thakurvadi Formation, Western Deccan Basalt Province, India. In: K.V. Subbarao (Ed.), Deccan Flood Basalts. Mem. Geol. Soc. India, no.10, pp.281-304.
- KILBURN, C.R.J. and GUEST, J.E. (1993) Aa lavas of Mount Etna, Sicily. In: C.R.J. Kilburn and G. Luongo (Eds.), Active Lavas: Monitoring and Modelling. UCL Press, London, pp.73-106.
- LE BAS, M.J., LE MATRE, R.W., STRECJEISEN, A., ZANWTTIN, B. (1986) A chemical classification of volcanic rocks on the total alkali silica diagram. Jour. Petrol.,v.27, pp.745-750.
- LIPMAN, P.W. and BANKS, N.G. (1987) Aa flow dynamics, Mauna Loa 1984. USGS Prof. Paper-1350, pp.1527-1568.
- LOFGREN, G.E. (1974) An experimental study of plagioclase crystal morphology: isothermal crystallization. Am. Jour. Sci., v.274, pp.243-273.
- LOFGREN, G.E. and DONADSON, C.H. (1975) Curved branching crystals and differentiation in comb-layered rocks. Contrib. Mineral. Petrol., v.49, pp. 309-319.
- LOFGREN, G.E. (1980) Experimental studies on the dynamic crystallization of silicate melts. In: J.M. Hargrages (Ed.), Physics of magmatic processes. Princeton Univ. Press New Jersey, pp.487-543.
- MAHONEY, J.J. (1988) Deccan Traps. In: J.D. Macdougall (Ed.), Continental Flood Basalts. Dordrecht: Kluwer Academic, pp.151-194.
- MISRA, K.S. (2002) Arterial system of lava tubes and channels within Deccan Volcanics of western India. Jour. Geol. Soc. India, v.59, pp.115-124.
- MISRA, K.S., SABALE, A.B. and BHUTANI, R. (2001) Lava channels and tubes in the western part of the Deccan Volcanic Province. Geol. Surv. India, Spec. Publ., no.64, pp.503-510.
- NAIR, K.K.K. and BHUSARI, B. (2001) Stratigraphy of Deccan Traps: A review. Geol. Surv. India, Spec. Publ., no.64, pp.477-492.
- PANDE, K. (2002) Age and duration of the Deccan Traps, India: a review of radiometric and palaeomagnetic constraints. Proc. Indian Acad. Sci. (Earth Planet. Sci.) v.11, pp.115-123
- PETERSON, D.W., HOLCAM, R.T., TILLING, R.I. and CHRISTIANSEN, R. L. (1994) Development of lava tube in light of observations at Mauna Loa, Kilauea Volcano, Hawaii. Bull. Volcanol., v.56, pp.343-360.
- PHADKE, A.V. and GHATE, N.S. (1984) The occurrence of lava tunnels in pahoehoe basalt flows of Pune area. Geol. Surv. India, Spec. Publ., no.14, pp.18-19.
- RAJARAO, C.S. (1984) Probable source area for the Deccan Basalts. Geol. Surv. India, Spec. Publ., no.14, pp.25-28
- ROLLINSON, H. (1993) Using Geochemical Data: evaluation, presentation, interpretation, Longman Scientific and Technical, Essex, p.76.
- ROSSI, M.J. (1997) Morphology of 1984 open-channel lava flow at Karfla volcano, northern Iceleland. Geomorphol. v.20, pp.95-112.
- SELF, S., KESZTHELYI, L. and THORDARSON, TH. (1998) The importance of pahoehoe. Annu. Rev. Earth. Planet. Sci. v.26 pp.81-110.
- SHARMA, R.K. and VADDADI, S. (1996) Report on lava tubes/ channels from Deccan Volcanic Province, Pune and Ahmednagar Districts, Maharashtra. Gond. Geol. Mag. Spl. v.2 pp.449-456.
- SHERVAIS, J.W., KAUFFMAN, J.D., GILLERMAN, V.S., OTHBERG, K.L., VETTER, S.K., HOBSON, V.R., ZARNETSKE, M., COOKE, M.F., SCOTT, H.M. and HANAN, B.B. (2005) Basaltic volcanism of the central and western Snake River Plain: A guide to field relations between Twin Falls and Mountain Home, Idaho. Geol. Soc. Amer. Field Guide No.6, pp.1-26.
- SPARKS, R.S.G., PINKERTON, H. and HULME, G. (1976) Classification and formation of levee at Mount Etna, Sicily. Geol. v.4, pp.269-271.
- SUBBARAO, K.V., BODAS, M.S., HOOPER, P.R. and WALSH, J.N. (1988) Petrogenesis of Jawhar and Igatpuri Formations, Western Deccan Basalt Province, In: K. V. Subbarao (Ed.), Deccan Flood Basalts. Mem. Geol. Soc. India, no.10, pp.252-280.
- SUBBARAO, K.V., CHANDRASEKHARAM, D., NAVANEETHAKRISHNAN, P. and HOOPER, P.R. (1994) Stratigraphy and structure of parts of Central Deccan Basalt Province: Eruptive Models. In: K.V. Subbarao (Ed.), Volcanism. Wiley Eastern Ltd., New Delhi, pp.321-332.
- SUN, S.S. and MCDONOUGH, W.F. (1989) Chemical and isotopic systematics of ocean basalts: implications for mantle composition and processes. In: A.D. Saunders and M.J. Norry (Eds.), Magmatism in ocean basins. Geol. Soc. London. Spec. Publ. No.42, pp.313-345.
- THORAT, P.K. (1996) Occurrence of lava channels and tubes in the western part of Deccan volcanic province. Gondwana Geol. Mag., Spec. volume 2, pp.449-450.
- THORAT, P.K. (2001) Stratigraphic aspects of lava channels and tubes from western parts of the Deccan Volcanic Province. Geol. Surv. India, Spec. Publ., no.64, pp.493-502.
- WALKER, G.P.L. (1991) Structure, and origin by inflation of lava under surface crust, of tumuli, “lava rises”, “lava-rise pits” and “lava-inflation clefts” in Hawaii. Bull. Volcanol., v.53, pp.546-558.