ISSN 1006-3021 CN11-3474/P
Published bimonthly started in 1979
青藏高原东南缘新生代地壳运动的转换
  
关键词:southeastern edge of the Tibetan Plateau  Baoshan Terrane  Pliocene  paleomagnetism  rotational deformation
基金项目:中国地质调查局地质调查项目(编号: DD20160268);中国地质科学院基本科研业务费项目(编号: JYYWF20182102));国家自然科学基金项目(编号: 41572183)
作者单位E-mail
裴军令 中国地质科学院地质力学研究所
自然资源部古地磁与古构造重建重点实验室 
junlingpei@163.com 
仝亚博 中国地质科学院地质力学研究所
自然资源部古地磁与古构造重建重点实验室 
 
蒲宗文 中国地质科学院地质力学研究所
自然资源部古地磁与古构造重建重点实验室 
 
景先庆 首都师范大学资源环境与旅游学院  
蔡瑜杭 中国地质科学院地质力学研究所
自然资源部古地磁与古构造重建重点实验室 
 
李建锋 中国地质科学院地质力学研究所  
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摘要:
The Cenozoic Multi-stage Transform of Crustal Movement Pattern of the Southeastern Edge of the Tibetan Plateau
      High-temperature magnetic components were obtained from the Pliocene Yingpan Formation basalt of the Baoshan Terrane at the southeastern edge of the Tibetan Plateau. The tilt-corrected site-mean direction is Ds=166.5o, Is= –19.3o, k=41.9, a95=5.1o, N=22 (sampling sites), and the positive multi-type fold tests provide their primary magnetic origin. The Pliocene paleomagnetic data indicate that the eastern part of the Baoshan Terrane has experienced 14.5o±4.8o of counterclockwise rotational deformation since the Pliocene, relative to East Asia, which is opposite to that of the northern and central part of the Baoshan Terrane. Combined with the Cenozoic paleomagnetic data of the Baoshan Terrane and Tengchong Block and the activity of block boundary faults, the authors hold that, since the collision of the India plate with the Eurasia plate in the Paleocene, the crustal movement pattern of the Tengchong Block and Baoshan Terrane experienced transforms in late Oligocene and early Miocene, and early Pliocene, respectively, which controlled the tectonic evolution of the strike-slip faults surrounding and in the Baoshan Terrane.
PEI Jun-ling,TONG Ya-bo,PU Zong-wen,JING Xian-qing,CAI Yu-hang,LI Jian-feng.2019.The Cenozoic Multi-stage Transform of Crustal Movement Pattern of the Southeastern Edge of the Tibetan Plateau[J].Acta Geoscientica Sinica,40(1):106-116.
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