MICROFACIES ANALYSIS, DEPOSITIONAL ENVIRONMENT AND ECOLOGY OF NEOPROTEROZOIC LIMESTONE OF SINCHA FORMATION, KATHUA DISTRICT, JAMMU
Abstract
Microfacies analysis helps in the identification of different carbonate particles, which form and grow in different depositional and diagenetic environments. Different textural classes were identified- mudstone facies, wackestone facies, packestone facies and grainstone facies.These textural facies are divisible into ten microfacies types- pelmicrite, pelsparite,intramicrite, intrasparite, algal biomicrite, algal biosparite, sparite with allochemical ghosts, micrite, sparite and dismicrite. The lateral facies suggests fluctuations from calm deeper conditions to agitated conditions in the depositional basin. At a number of stratigraphic levels high-energy intertidal intraclastic rocks and supratidal intrasparite formed. The algal laminates laterally grade to algal flats of supratidal to intertidal environments suggesting local reef forming conditions.The facies in this environment represent mudstone with peloids, algal mats, intraclastic wackestone and terrigenous inputs from the land. These microfacies are attributed to the microfacies belts of 8 and 9 MFZ. These Facies belts are confined to the restricted platforms and platform evaporate environment which are represented by cut-off lagoon and coastal ponds with restricted circulation. Calcareous algae are abundant in these shallow marine carbonates. The observed assemblage is dominated by Cyanobacteria which shows hypobradytelic evolution.
The microfacies dominated by the presence of micrite in the inter-columnar spaces reflect their deposition and growth in the low intertidal or shallow or subtidal conditions with barriers preventing strong wave splashes. Pyrite found associated with the rhythmites may be syngenitic, which developed into a restricted euxinic environment. On the whole the microflora and associated microfacies are indicative of development in the intertidal zone of protected lagoon, in the supratidal and subtidal environments of the pertidal environment setting.
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Bengtson, S., Fedonkin, M. A and Lipps, J. H (1992). The major biotas of Proterozoic to Early Cambrian multicellular organisms. In . Schopf, J. W and Klein, C. (eds.). The Proterozoic biosphere. Cafmbridge University press, pp. 433 – 436.
Bhat, G. M., Ram, G and Koul, S (2009). Potential for oil and gas in the Proterozoic carbonates (Sirban Limestone) of Jammu, northern India. Geol. Soc., London, Special Publications. Vol. 326, pp. 245 - 254.
Black, M (1933). Algal sediment of Andros Island Bahamas. Phil Trans. Roy. Soc. Lond., Ser B, vol. 222, pp. 165 – 192.
Choudhary J.B (2006).Geotechnical and Structural evaluation of Tectonostratigraphic Units along Head Race Tunnel, Sewa Hydroelectric Project.Stage-II,Kathua District.Unpublished Ph.d thesis.University of Jammu,Jammu.
Dunham, R. J (1962). Classification of carbonate rocks according to depositional texture. Mem. Amer. Ass. Petrol. Geol., vol. 1, pp. 108 – 121.
Flugel, E (1982). Microfacies analysis of limestone New York, Springer-Verlag Berlin Heideliberg
Folk, R. L (1962). Spectral subdivison of carbonate of limestone types: In Ham. W. Edition, Classification of Carbonate rocks. Mem. Amer. Assoc. Pet. Geol., Oklahoma, vol. 1, pp. 62-84.
Gebelein, C. D (1969). Distribution, morphology and accretion rate of recent sub–tidal aelgal stlfromatolites in Bermuda. Jour. Sed. Pet., vol.39, pp. 49 - 69.
Hofmann, H. J (1973). Stromatolites: characteristics and utility. Earth-Sci. Rev., vol. 9(4), pp. 39 - 373.
Jangpangi, G., Kumar, G., Rathore, D.R., and Datta, S. 1986. Geology of The Autoctconous folded belt, Jammu and Kashmir Himalaya with special references to the Panjal Thrust. Jour. Pal. Soc. Ind.,v.31, 39-51p.
Karunakaran, C. and Ranga Rao, A. 1979. Status of exploration for hydrocarbon in the Himalayan Region. Himalayan Geol. Seminar. New Delhi 1976, Jour. Geol. Surv. India, Misc. Publ., 41: 1-66p.
Kalkowsky, E (1908). Oolites and Stromatolites in Norddleutschen Buntsandstone. Z. Deut. Geol. Ges., vol. 60, pp. 68 – 125.
Kumar , S and Rai, V (1992). Organic walledmicrofossels from the bedded chert of the Krol Formation (Vendian), Solan area, Himanchal Pardesh. Jour. Geol. Ind., vol. 39, pp. 229 – 234
Kumar , S and Srivastava, P (1992). Microfossils from the black chert of Bhagwanpura limestone (Middle Proterozoic), Vindhayan supergroup, chittorgarh area, Rajasthan, West India. Curr. Sci., vol. 62, pp. 371-374.
Mc Mohan C. A., 1885. Some Further notes on the Geology of Parts of Chamba Rec. Geol. Surv. India, v. 18(1) 37-78p.
Medlicott, H. B (1864). On the geological structures and relations of the southern portion of the Himalayan ganges getween the givers Ganga and Ravee. Mem. Geol. Surv. Ind., vol. 3(2), pp. 1 - 212.
Medlicott, H. B (1876). Note upon the Sub –Himalayan ueries in the Jammu (Jammoo) hills. Rec. Geol. Surv. India, vol. 9(2), pp. 49 - 57.
Monty, C. L. V (1965). Recent stromatolites in the windward lagoon, Andras Island Bahamas, Soc. Geol. Belgique Annales, vol. 88, pp. 269 - 276.
Raha, P. K (1980b). Determination of paliocurrents and rate of sedimentationfrom stromatolites in Jammu Limestone, Udhampur District, Jammu. Proc. Workshop on stromatolites. G.S.I. Misc. Pub., vol. 44, pp. 267 – 274.
Raina, B.K.,Sharma,B.L. 1988-89. Geology of Sarthal-Bani-Siara Belt Sewa River Valley Basohli Tehsil Kathua District; Jammu and Kashmir, Progress Report
Sharma V. P., Chaturvedi R.K. and Sundaram, 1970-71. Systematic mapping Bhadarwah Bhallesh Bani area. Doda and Kathua districts J&K state Unpub. GSI report.
Srivastava, P. and Kumar, S (1997). Possible evidance of animal life in Neoproterzoic Deoban microfossil asemblage, Garhwal Leser Himalaya, Utter Pradesh, Curr. Sci., vol. 72 pp. 145 - 149.
Shukla, M., Tiwari, V. C and Yadav, V. K (1987). Late Pracambrian microfosils from Deoban Limestone Formation, Leser Himalaya, India. Palaeobot., vol. 35, pp. 247 - 256.
Tiwari, M (1996). Precambrian boundary microbiota from the chert phosphorite member of Tal Formation in the Korgai Syncline, Lesser Himalaya, India. Curr. Sci., vol. 71, pp. 718 - 119.
Tiwari, M and Azmi, R. J (1992). Late Proterozoic organic-walled microfossils from the infra Krol of Solan, Himachal Lesser Himalaaya: An addetional age constraint in the Lrol belt succcession. Palaeobot., vol. 39, pp. 387 - 394.
Venkatachala, B. S., Shukla, M., Bansal, R and Acharyya, S. K (1989). Upper Preterozoic microfossils from Infra Krol Formation, National Synform, Kumaaon Himalayaa, India. Palaeobot., vol. 38, pp. 29 - 38.
Wilson, J. L (1975). Carbonate facies in geological history: Springer Verlag Berlin., pp. 470.
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