Late Cretaceous topographic doming caused by initial upwelling of Deccan magmas: Stratigraphic and sedimentological evidence
Late Cretaceous topographic doming caused by initial upwelling of Deccan magmas: Stratigraphic and sedimentological evidence
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德干岩浆最初上涌引起的晚白垩世地形隆起：地层学和沉积学证据
DOI：
10.1130/b35133.1
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发表时间：
2020-03
影响因子：
4.9
通讯作者：
Marcelle BouDagher-Fadel
中科院分区：
文献类型：
--
作者：
Juan Li;Xiumian Hu;Eduardo Garzanti;Santanu Banerjee;Marcelle BouDagher-Fadel
这项研究的重点是最上层的白垩纪沉积岩沉积在喜马拉雅地区和周围的核心印度半岛之前爆发的德干圈闭。喜马拉雅山脉晚白垩世层序的详细地层学和沉积学分析，以及Kirthar褶皱冲断带和印度中部至东南部的文献资料，证明了在德干-第三纪边界附近的德干岩浆爆发之前，Campanian-Maastrichtian期发生了明显的向上变浅的沉积趋势。印度半岛的地形隆起开始于坎帕尼亚期，与德干省中部相比，周边地区（喜马拉雅山脉、Kirthar褶皱带和Krishna-Godavari盆地）的非沉积期较短，因此沉积物堆积较厚。德干火山活动之前的地表隆起发生在温暖潮湿的赤道纬度，这可能导致了硅酸盐风化的加速，降低了大气pCO 2，以及从坎帕尼亚-马斯特里赫特期开始的气候变冷。印度至今仍被观察到的放射状离心河流水系就是在那时建立的。
This study focused on uppermost Cretaceous sedimentary rocks deposited in the Himalayan region and around the core of peninsular India just before the eruption of the Deccan Traps. Detailed stratigraphic and sedimentological analysis of Late Cretaceous successions in the Himalayan Range together with literature data from the Kirthar fold-and-thrust belt and central to southeastern India document a marked shallowing-upward depositional trend that took place in the Campanian–Maastrichtian before the Deccan magmatic outburst around the Cretaceous-Tertiary boundary. Topographic uplift of the Indian peninsula began in Campanian time and is held responsible for thick sediment accumulation associated with shorter periods of nondeposition in peripheral areas (Himalayan Range, Kirthar fold belt, and Krishna-Godavari Basin) than in the central part of the Deccan Province. Surface uplift preceding Deccan volcanism took place at warm-humid equatorial latitudes, which may have led to an acceleration of silicate weathering, lowered atmospheric pCO2, and climate cooling starting in the Campanian–Maastrichtian. The radial centrifugal fluvial drainage in India that is still observed today was established at that time.
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影响因子：
3.5
作者：
G. Rao
通讯作者：
G. Rao
影响因子：
3
作者：
F. Jadoul;F. Berra;E. Garzanti
通讯作者：
F. Jadoul;F. Berra;E. Garzanti
影响因子：
--
作者：
A. Srivastava;Rupesh S. Mankar
通讯作者：
A. Srivastava;Rupesh S. Mankar
影响因子：
1.2
作者：
Don L. Anderson
通讯作者：
Don L. Anderson
影响因子：
2.9
作者：
Fu-Yuan Wu;Weiqiang Ji;Jian‐Gang Wang;Chuan-Zhou Liu;Sun‐Lin Chung;P. Clift
通讯作者：
Fu-Yuan Wu;Weiqiang Ji;Jian‐Gang Wang;Chuan-Zhou Liu;Sun‐Lin Chung;P. Clift