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DOI | 10.1029/2021GL096623 |
Post-50 Ma evolution of India-Asia collision zone from paleomagnetic and GPS data: Greater India indentation to eastward Tibet flow | |
A. Todrani; F. Speranza; N. D’; Agostino; B. Zhang | |
2021-12-22 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | We re-evaluate 357 Jurassic-Holocene paleomagnetic datasets from Tibet-Indochina and compare them with present-day GPS velocity field. SE Tibet NW of the East Himalaya Syntaxis (EHS) underwent 20°-30° counterclockwise rotations around 50 Ma, and mostly clockwise rotations after 40 Ma. NE of the EHS, post-50 Ma clockwise rotation occurred, whereas highly scattered clockwise rotations took place on northern Indochina at 25-15 Ma, after a remagnetization episode. We suggest that the indentation of Greater India NE corner at ∼50 Ma resulted in a wide orogenic reentrant characterized by opposite rotations at orocline limbs. Rotations East of EHS after 40 Ma were likely due to local strike-slip fault activity. After 30 Ma, the ongoing India collision fragmented Indochina into km-scale blocks that experienced independent rotations. The present-day clockwise rotation pattern around the EHS started at 15-10 Ma along with eastward Tibet crustal spreading, and has not produced yet a detectable paleomagnetic rotation. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/344144 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | A. Todrani,F. Speranza,N. D’,et al. Post-50 Ma evolution of India-Asia collision zone from paleomagnetic and GPS data: Greater India indentation to eastward Tibet flow[J]. Geophysical Research Letters,2021. |
APA | A. Todrani,F. Speranza,N. D’,Agostino,&B. Zhang.(2021).Post-50 Ma evolution of India-Asia collision zone from paleomagnetic and GPS data: Greater India indentation to eastward Tibet flow.Geophysical Research Letters. |
MLA | A. Todrani,et al."Post-50 Ma evolution of India-Asia collision zone from paleomagnetic and GPS data: Greater India indentation to eastward Tibet flow".Geophysical Research Letters (2021). |
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