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Lava Channel of Khedrai Dam, Northeast of Nasik in Western Deccan Volcanic Province: Detailed Morphology and Evidences of Channel Reactivation


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1 Geological Survey of India, Pune - 4110 06, India
2 Geological Survey of India, Bhopal-462016, India
3 Geological Survey of India, Mangalore - 575 001, India
     

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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.
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  • 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.

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  • Lava Channel of Khedrai Dam, Northeast of Nasik in Western Deccan Volcanic Province: Detailed Morphology and Evidences of Channel Reactivation

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Authors

Bibhas Sen
Geological Survey of India, Pune - 4110 06, India
A. B. Sabale
Geological Survey of India, Bhopal-462016, India
P. V. Sukumaran
Geological Survey of India, Mangalore - 575 001, India

Abstract


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