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Did the Deccan Volcanism impact the Indian flora during the Maastrichtian?
Earth-Science Reviews ( IF 10.8 ) Pub Date : 2024-10-09 , DOI: 10.1016/j.earscirev.2024.104950
Shreya Mishra, Mahi Bansal, Vandana Prasad, Vikram Partap Singh, Srikanta Murthy, Shalini Parmar, Torsten Utescher, Ranjit Khangar

The Deccan-associated sediments (Lameta and intertrappean deposits) hold great potential for understanding the role of Deccan Volcanism in the late Maastrichtian ecological upheaval. However, it is challenging to ascertain Deccan Volcanism driven floral changes on the Indian Plate due to unresolvedstratigraphyic and lack of well-dated terrestrial sequences. We provide a thorough palaeobotanical, palaeoclimatic and palaeobiogeographic review of the pre-Deccan (Lameta deposits) and syn-Deccan (intertrappean deposits) sequences. We present a detailed palynological analysis of C29R magnetochron intertrappean section from Yeotmal, central India, depicting episodic regional floral responses to volcanism. We have critically reviewed the Indian Maastrichtian palaeofloral and palaeoclimatic records within the best-resolved chronologies to clarify the spatiotemporal changes in palaeovegetation and palaeoclimate pertaining to the Deccan Volcanism. Furthermore, we evaluated the global fossil records of all the nearest living relatives of the studied assemblage to enhance our understanding of the genesis of the late Maastrichtian flora of the Deccan Volcanic Province.

中文翻译:


德干火山活动是否影响了马斯特里希时期的印度植物群?



与德干相关的沉积物(Lameta 和 trappean 矿床)对于理解德干火山作用在马斯特里希晚期生态剧变中的作用具有巨大潜力。然而,由于未解析的地层学和缺乏年代明确的陆地序列,要确定印度板块上德干火山作用驱动的花卉变化是具有挑战性的。我们对前德干(Lameta 矿床)和 syn-Deccan(trappean 矿床间)序列进行了全面的古植物学、古气候学和古生物地理学综述。我们对来自印度中部 Yeotmal 的 C29R 磁chron trappean 剖面进行了详细的古生物学分析,描绘了区域花卉对火山作用的偶发性反应。我们在最佳分辨率年表中批判性地回顾了印度马斯特里赫蒂古植物和古气候记录,以阐明与德干火山活动有关的古植被和古气候的时空变化。此外,我们评估了所研究组合的所有最近现存亲属的全球化石记录,以增强我们对德干火山省马斯特里希晚期植物区系起源的理解。
更新日期:2024-10-09
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