阿萨姆邦盆地Mikir Hill隆起的时间安排:沿印度板块东边缘的应力传播记录

IF 1.7 Q3 GEOSCIENCES, MULTIDISCIPLINARY
Mainak Choudhuri, Prabir Routray, Bikashkali Jana, Sudhir Mathur
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引用次数: 0

摘要

Shillong Plateau Mikir Hill综合体是一个相对较小但重要的地质特征,位于印度东北部。它主要由前寒武纪基岩组成,并被白垩纪、第三纪和第四纪沉积物覆盖。有几项研究通过直接测定基岩的年代或间接测定沉积物的年代来估计这些基底复合体的挖掘时间。本研究试图利用现有的地震和测井数据,建立与其他构造和地质事件相关的米克尔山剥露和隆起的相对年表。研究发现,Mikir Hill隆起始于Nazira砂岩沉积末期~3.6 Ma(上新世早期),并在更新世末期(~0.012 Ma)停止,以Namsang组顶部的明显不整合为标志。这些观测结果与之前作者提出的Mikir Hill和Shillong高原表面隆起的时间大致一致。研究还表明,在阿萨姆邦前陆中沿着舒彭带的前冲断层纳加冲断层前缘形成的构造,显示出从NE到SW的渐进年轻变形。这表明它们的形成与印度板块的东部俯冲历史有着广泛的相关性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Timing the Mikir Hill uplift in Assam Basin: Record of stress propagation along the eastern margin of the Indian Plate

Timing the Mikir Hill uplift in Assam Basin: Record of stress propagation along the eastern margin of the Indian Plate
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来源期刊
Journal of Asian Earth Sciences: X
Journal of Asian Earth Sciences: X Earth and Planetary Sciences-Earth-Surface Processes
CiteScore
3.40
自引率
0.00%
发文量
53
审稿时长
28 weeks
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