Dinoflagellate cyst biostratigraphy and age of the Middle Eocene Kalol Formation in the Kalol-109 well, north Cambay Basin, Western India

Mathur, Y. K.

doi:10.1016/0034-6667(86)90013-8

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…However, the studied sequence between Age-The stratigraphic range of Proxapertites cursus in Palaeocene-Middle Eocene (Thanikaimoni et. al, 1984;Mathur & Chaudhary, 1976;Mathur, 1986). The taxon Polycolpites flavatus (Lower to Middle Eocene) also recorded in this zone.…”

Section: Palynozone -Iimentioning

confidence: 92%

Biostratigraphy and palaeoenvironmental analysis of subsurface Palaeogene sediments in western part of Ahmedabad Block, North Cambay Basin

Shanmukhappa

Uniyal

2008

JPS

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The western part of Ahmedabad Block is among the thrust areas for hydrocarbon exploration in Cambay Basin. Palynological studies of the Palaeogene sediments of Ahmedabad Block between Detroj and Wasnalava have been carried out to evaluate the palynostratigraphy and infer depositional environment to help in basin modelling for exploration of hydrocarbons. Based on palynofloral association three assemblage zones, viz. Polybrevicolporites cephalus Zone (Palynozone-I), Proxapertites cursus- Polycolpites flavatus Zone (Palynozone-II) and Palmaepollenites kutchensis Zone (Palynozone-III) have been identified. These zones are dated Early, Middle and Late Eocene in age. The sediments corresponding to Olpad Formation (?Palaeocene) exhibited poor palynofloral contents. The interpretation of depositional environment is based on the absolute pollen frequency and palynofloral associations. In Cambay and Kadi formations the coastal and back mangrove elements are common with sporadic occurrence of marine elements, suggestive of near shore environment of deposition. The overlying Kalol Formation has yielded rich back mangrove floral assemblage along with moderate occurrences of coastal elements and is suggestive of Littoral conditions. The dominance of marine phytoplankton in Tarapur Formation is indicative of shallow marine conditions of deposition.

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Section: Palynozone -Iimentioning

confidence: 92%

Biostratigraphy and palaeoenvironmental analysis of subsurface Palaeogene sediments in western part of Ahmedabad Block, North Cambay Basin

Shanmukhappa

Uniyal

2008

JPS

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“…Coal deposits are reported from the early Palaeocene Hangu Formation in Khyber Pakhtunkhwa, Pakistan (Warwick et al 1995;Qazy 2005); the stratigraphically higher Palaeocene Patala Formation in the Salt Range, Punjab, Pakistan (Warwick and Shakoor 2007); the Palaeocene Bara Formation (Frederiksen 1992;Wnuk et al 1993) and the latest Palaeocene Sohnari Formation coals, both on the Lakhra Anticline in Sindh, Pakistan (Wnuk et al 1991;Fatmi 1992a, 1992b); the Palaeocene/Eocene Bara(?) Formation in the Thar Desert, Pakistan (Fassett and Durrani 1994) and coals in various formations in the Barmer, Nagaur, and Palana Coalfields Rajasthan, India Rana et al 2005;Tripathi et al 2009 among others); early Eocene coals in the Gujarati coalfields outside of the Cambay Basin (Garg et al 2011;Rao et al 2013;Saraswati et al 2014 among others); and early Eocene Kadi Formation (Chowdhary and Singh 1978) and middle Eocene Kalol Formation (Mathur 1986) coals within the Cambay Basin. This equatorial climate-controlled pattern of coal formation continues southward towards the tip of India, with Miocene to Pliocene coals being reported from Kerala and Tamil Nadu (Trippi and Tewalt 2011).…”

Section: Cenozoic Coal Occurrencesmentioning

confidence: 96%

Coal resource potential of Afghanistan

Wnuk¹

2015

International Geology Review

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“…Apan from the above discussed biozonational schemes and their direct correlation with invertebrate faunal evidences, several other biozonational schemes have also been proposed solely based on dinoflagellate cysts (Singh et al, 1979;Khanna et at., 1981;Mathur, 1986;Sarkar & Singh, 1988). Mathur (1986) Bujak, 1985, p. 903, fig. 19).…”

Section: Biostratigraphic Potential Of Dinoflagellate Cystsmentioning

confidence: 99%

Fossil dinoflagellates: an emerging tool in Indian biostratigraphy

Jain¹,

Garg²,

Khowaja-Ateequzzaman³

1991

JPS

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The total span of fossil dinoflagellate research in India stretches within the last three decades. Two distinct phases of this study are recognised, the phase of Reconnaissance and Understanding (1961-70) and the phase of Establishment and Refinement (1971-1990). The significance of dinoflagellate cysts in resolving various biostratigraphic problems of Mesozoic and Cenozoic sedimentary sequences is discussed citing specific examples from Indian basins. Recent approaches towards achieving biostratigraphic precision through integration with smaller planktonic and larger benthonic foraminifera, ammonites, and calcareous nannoplankton, are specifically highlighted focusing the potential of dinoflagellate cysts to resolve the time boundaries. A review of the previous literature has revealed that wrong identifications, especially of marker taxa, have led to major errors in age determination of sedimentary sequences. A few cases are exemplified. An appeal has been made to fellow palynologists to be careful in presenting geological and palynological data to maintain the viability and potential of this group of microfossils in biostratigraphy.

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Dinoflagellate cyst biostratigraphy and age of the Middle Eocene Kalol Formation in the Kalol-109 well, north Cambay Basin, Western India

Cited by 4 publications

References 2 publications

Biostratigraphy and palaeoenvironmental analysis of subsurface Palaeogene sediments in western part of Ahmedabad Block, North Cambay Basin

Biostratigraphy and palaeoenvironmental analysis of subsurface Palaeogene sediments in western part of Ahmedabad Block, North Cambay Basin

Coal resource potential of Afghanistan

Fossil dinoflagellates: an emerging tool in Indian biostratigraphy

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