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Palynostratigraphy and palynofacies of the early Eocene Gurha lignite mine, Rajasthan, India

Kumar, Madhav; Spicer, Robert A.; Spicer, Teresa E. V.; Shukla, Anumeha; Mehrotra, R.C. and Monga, Priyanka (2016). Palynostratigraphy and palynofacies of the early Eocene Gurha lignite mine, Rajasthan, India. Palaeogeography, Palaeoclimatology, Palaeoecology, 461 pp. 98–108.

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DOI (Digital Object Identifier) Link: https://doi.org/10.1016/j.palaeo.2016.08.013
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Abstract

A 105 m early Eocene section exposed in the Gurha mine in the Nagaur-Ganganagar Basin, Rajasthan, India, archiving remains of equatorial vegetation at a time of extreme global warmth and close to the onset of the India-Eurasia collision, is investigated using palynostratigraphic and palynofacies analyses. Four palynozones e.g., Palmidites plicatus Singh, Botryococcus braunii Kützing, Triangulorites bellus Kar and Ovoidites ligneolus are identified stratigraphically on the basis of abundance of these pollen taxa over others. The occurrence of taxonomically highly diverse angiosperm pollen in all the four palynozones attests to an extremely rich near-coastal tropical flora subject to frequent wildfires under a strongly seasonal precipitation regime. Palynotaxa characteristic of these palynozones are widely distributed in other early Paleogene sediments of India. Sedimentary organic matter (structured terrestrial, biodegraded, amorphous, grey amorphous, resins, charcoal/black-brown debris and algal remains) recovered from mire and lacustrine sediments are of terrestrial origin, recording fluctuations in burial anoxia and salinity. Episodes of elevated salinity are due either to seepage of marine waters and/or a periodic excess of evaporation over precipitation at times when the depositional system was closed.

Item Type: Journal Item
Copyright Holders: 2016 Elsevier B.V.
ISSN: 0031-0182
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetBirbal Sahni Institute of Palaeobotany
Keywords: Palynology; Early Eocene; Palynostratigraphy; Paleoecology; Rajasthan; Lignite mine
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 53864
Depositing User: ORO Import
Date Deposited: 16 Mar 2018 08:40
Last Modified: 12 May 2019 00:26
URI: http://oro.open.ac.uk/id/eprint/53864
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