DOI: 10.1016/j.palaeo.2016.08.013
论文题名: Palynostratigraphy and palynofacies of the early Eocene Gurha lignite mine, Rajasthan, India
作者: Kumar M. ; Spicer R.A. ; Spicer T.E.V. ; Shukla A. ; Mehrotra R.C. ; Monga P.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 461 起始页码: 98
结束页码: 108
语种: 英语
英文关键词: Early Eocene
; Lignite mine
; Paleoecology
; Palynology
; Palynostratigraphy
; Rajasthan
英文摘要: 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. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68242
Appears in Collections: 过去全球变化的重建
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作者单位: Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow, U.P., India; Environment, Earth and Ecosystems, Centre for Earth, Planetary, Space and Astronomical Research, The Open University, Milton Keynes, United Kingdom; Institute of Botany, The Chinese Academy of Sciences, 20 Nanxincun, Xiangshan, Beijing, China
Recommended Citation:
Kumar M.,Spicer R.A.,Spicer T.E.V.,et al. Palynostratigraphy and palynofacies of the early Eocene Gurha lignite mine, Rajasthan, India[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,461