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DOI	10.2747/0020-6814.50.6.546
	Early Paleocene paleomagnetic results from southern Tibet, and tectonic implications
	Tong, Yabo; Yang, Zhenyu; Zheng, Liandi; Yang, Tianshui; Shi, Linfeng; Sun, Zhiming; Pei, Junling
通讯作者	Yang, ZY (通讯作者)
发表日期	2008
ISSN	0020-6814
起始页码	546
结束页码	562
卷号	50 期号:6
英文摘要	Paleomagnetic studies were carried out on the Paleocene sedimentary rocks at Dingri, Tibet (28 degrees 42'N. 86 degrees 50'E) along the northern margin of the Indian plate. Thirteen sites (about 120 cores) were sampled from limestone of the Zongpu Formation. Three magnetic components were identified after stepwise thermal demagnetization. The middle-temperature component records a remagnetization event, which is inferred to be a consequence of thermal remagnetization during the collision between India and Eurasia. The age of remagnetization, similar to 54.0 Ma, was estimated by comparing the measured paleolatitude and the expected paleolatitude from the apparent polar wander path (APWP) of the Indian plate, which corresponds to the time of final suturing between India and Eurasia. The preliminary result for the high-temperature component was determined by the intersection of great circles, which passed a regional fold test. The magnetic remanence reflects the primary origin, and probably was acquired at similar to 65.5-61.7 Ma. By comparing our Paleocene results with those from the stable Indian plate, we infer that the Dingri area was a stable part of the Indian block, and crustal shortening across the Main Central thrust (MCT) and the Main Boundary fault (MBF) in the southern Himalayas was paleomagnetically insignificant. The extension of greater India is estimated as similar to 1000 km.
关键词	INDIA-ASIA COLLISION CONTINENTAL SUBDUCTION GEOMAGNETIC-FIELD SEDIMENTARY-ROCKS ZANGBO SUTURE CHINA BLOCK TIEN-SHAN FOLD TEST RED BEDS CONSTRAINTS
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:000256394300003
来源期刊	INTERNATIONAL GEOLOGY REVIEW
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257576
推荐引用方式 GB/T 7714	Tong, Yabo,Yang, Zhenyu,Zheng, Liandi,et al. Early Paleocene paleomagnetic results from southern Tibet, and tectonic implications[J]. 中国科学院青藏高原研究所,2008,50(6).
APA	Tong, Yabo.,Yang, Zhenyu.,Zheng, Liandi.,Yang, Tianshui.,Shi, Linfeng.,...&Pei, Junling.(2008).Early Paleocene paleomagnetic results from southern Tibet, and tectonic implications.INTERNATIONAL GEOLOGY REVIEW,50(6).
MLA	Tong, Yabo,et al."Early Paleocene paleomagnetic results from southern Tibet, and tectonic implications".INTERNATIONAL GEOLOGY REVIEW 50.6(2008).