Lateral extrusion along the Altyn Tagh Fault, Qilian Shan (NE Tibet): insight from a 3D crustal budget

被引：103

作者：

Cheng, Feng ^{[1
,2
]}

Jolivet, Marc ^{[2
]}

Dupont-Nivet, Guillaume ^{[1
,2
,3
]}

Wang, Lin ^{[4
]}

Yu, Xiangjiang ^{[1
]}

Guo, Zhaojie ^{[1
]}

机构：

[1] Peking Univ, Sch Earth & Space Sci, Minist Educ, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China

[2] Univ Rennes 1, CNRS UMR6118, Lab Geosci Rennes, F-35042 Rennes, France

[3] Univ Potsdam, Inst Earth & Environm Sci, D-14476 Potsdam, Germany

[4] Peking Univ, Inst Remote Sensing & Geog Informat Syst, Beijing 100871, Peoples R China

来源：

TERRA NOVA | 2015年 / 27卷 / 06期

关键词：

CENOZOIC TECTONIC EVOLUTION; WESTERN HAIYUAN FAULT; INDO-ASIAN COLLISION; EASTERN KUNLUN RANGE; QAIDAM BASIN; NORTHEASTERN TIBET; NORTHERN TIBET; NORTHWEST CHINA; HEXI CORRIDOR; STRIKE-SLIP;

D O I：

10.1111/ter.12173

中图分类号：

P [天文学、地球科学];

学科分类号：

070403 [天体物理学];

摘要：

The lithospheric strike-slip Altyn Tagh Fault has accommodated hundreds of kilometres of displacement between the Qaidam and Tarim blocks since its Eocene reactivation. However, the way the deformation is accommodated in the Qilian Shan and further east remains uncertain. Based on 360 km of north-eastward migration of the relatively rigid Qaidam block along the Altyn Tagh Fault and 3D isovolumetric balancing of the crustal deformation within the Altyn Tagh Fault-Qilian Shan system, we demonstrate that 250 +/- 28 km (43.8-49.4%) of N20E directed crustal shortening and an additional similar to 250-370 km of eastward motion of the Qilian Shan crust must be accounted for by strike-slip faulting in the Qilian Shan and crustal thickening in the Qinling area, as well as by extension in the adjoining North China block graben systems.

引用

页码：416 / 425

页数：10

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