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Wave coupling between the Tianshan orogen and the deformations in its south and north foreland basins in Cenozoic

Science china Earth Sciences 2008年第S2期51卷 61-69页

作者： chen shuping1,2,tang liangjie & yu yixin1,2 1 state key laboratory of petroleum resource and prospecting,china university of petroleum,beijing 102249,china 2 Department of Geoscience,china university of petroleum,beijing 102249,china china Univ Petr State Key Lab Petr Resource & Prospecting Beijing 102249 Peoples R China china Univ Petr Dept Geosci Beijing 102249 Peoples R China

Attention has been paid to the deformations in the south and north foreland basins of the Tianshan Mountains and their relations to the tectonic movements of the mountains. Based on the seismic data interpretation and field work,the tectonic features,tectonic styles,controlling factors of deformation,deformation time,and their relationships in the three tectonic units were comparably studied. The Ce-nozoic deformations in the two foreland basins were characterized by zonation from south to north,segmentation from west to east,and layering from deep to shallow. The tectonic styles are compres-sive ones,including both basement-involved and cover-detaching. The two foreland basins underwent several times of deformation in Cenozoic and the deformations were transmitted from the Tianshan orogen to the inner basin. The deformation dynamics of the south and north foreland basins of the Tianshan Mountains can be represented by dynamics of orogenic wedges. In terms of the deformations of the wedges with wave-like features,the concept of a wave orogenic wedge was put forward,and a double wave orogenic wedge model was established.

关键词： Tianshan orogen basin-mountain coupling tectonics wave orogenic wedge

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Reply to ‘Calculation of depth to detachment and its significance in the Kuqa Depression:A discussion’

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petroleum Science 2009年第1期6卷 21-23页

作者： yu yixin tang liangjie He Chunbo chen Xuyun state key laboratory of petroleum resource and prospecting China University of Petroleum Beijing 102249 China Basin ＆ Reservoir Research Center China University of Petroleum Beijing 102249 China

This paper mainly replies to the discussion by Li et al （2009） on the calculation of the detachment depths in the Kuqa Depression. We think that viscous material flowing into or out of the cross section can affect the validity of the calculation method, yet the number of detachment levels does not bring any drawbacks to the calculation. In the Kuqa Depression, the salt flow influenced the structural deformation to some extent, and affected slightly the accuracy of the calculated depths of the true detachment levels. However, it does not mean that the calculation method loses effectiveness in the study area. Therefore, the calculation results are still relatively believable.

关键词： Excess area detachment level reply discussion Kuqa Depression

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