Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL093677 |
Exhumation History Along the Muli Thrust - Implication for Crustal Thickening Mechanism in Eastern Tibet | |
P. Pitard; A. Replumaz; M.-L. Chevalier; P.-H. Leloup; M. Bai; M.-P. Doin; C. Thieulot; X. Ou; M. Balvay; L. Haibing | |
2021-06-30 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Thrusting implication in the crustal thickening history of eastern Tibet is highly debated. The ∼250 km-long Muli thrust of the Yalong thrust belt in SE Tibet is a major Miocene structure with a pronounced topographic step (∼2000 m). Using thermo-kinematic modelling based on thermochronology data, we constrain the crustal geometry of the thrust as being steep (>70°) at the surface, in agreement with field observations, and flattening at depth (≥20 km) on an intra-crustal décollement. Thrusting motion on the fault shows a velocity of 0.2 ± 0.06 km/Ma since 50 Ma, followed by an acceleration at a rate of 0.6 ± 0.08 km/Ma starting at 12.5 ± 1 Ma, yielding a total of ∼15 km of exhumed crust. Deeper, deformation may be localized through a ductile shear zone, and be related to the ∼15 km Moho step and shear wave velocity contrast imaged by tomography beneath the Yalong thrust belt. |
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/333894 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | P. Pitard,A. Replumaz,M.-L. Chevalier,et al. Exhumation History Along the Muli Thrust - Implication for Crustal Thickening Mechanism in Eastern Tibet[J]. Geophysical Research Letters,2021. |
APA | P. Pitard.,A. Replumaz.,M.-L. Chevalier.,P.-H. Leloup.,M. Bai.,...&L. Haibing.(2021).Exhumation History Along the Muli Thrust - Implication for Crustal Thickening Mechanism in Eastern Tibet.Geophysical Research Letters. |
MLA | P. Pitard,et al."Exhumation History Along the Muli Thrust - Implication for Crustal Thickening Mechanism in Eastern Tibet".Geophysical Research Letters (2021). |
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