气候变化领域集成服务门户(CCPortal): New insights into the collision process of India and Eurasia: Evidence from the syntectonic-sedimentation-induced inclinational divergence of Cretaceous paleomagnetic data of the Lhasa Terrane

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DOI	10.1016/j.earscirev.2019.02.009
	New insights into the collision process of India and Eurasia: Evidence from the syntectonic-sedimentation-induced inclinational divergence of Cretaceous paleomagnetic data of the Lhasa Terrane
	Tong Y.; Yang Z.; Li J.; Pei J.; Li J.
发表日期	2019
ISSN	0012-9031
起始页码	570
结束页码	588
卷号	190
英文摘要	Unidentified Cretaceous syntectonic growth strata in the Lhasa Terrane (LT) has resulted in inclinations calculated from the paleomagnetic data from the southern limb of folds being substantially higher than those from the northern limb. This causes conspicuous inclinational divergences in the Cretaceous paleomagnetic data obtained from the LT, and results in cluttered restoring of the Cretaceous paleolatitude of the southern margin of Eurasia, contradictory constraining of the collision process of India and Eurasia, and imprecise estimation of the post-collision crustal convergence within southern Eurasia. After applying a new syntectonic-sedimentation-correction, the inclinational divergences of the Cretaceous paleomagnetic data within the LT are effectively eliminated. The Cretaceous inclinations of the western part of the LT are found to converge within the range of 30.1°–30.7°, indicating that the western part of the LT was situated at the paleolatitude of 16.9 ± 1.3°N during the Cretaceous. Nevertheless, the syntectonic-sedimentation-correction for the Cretaceous paleomagnetic data from the central-eastern parts of the LT show alternative Cretaceous paleolatitudes of 17.4 ± 1.3°N or 12.9 ± 1.6°N, because of lacking paleomagnetic sampling sections across the two limbs of folds. When considering the western, central and eastern parts of the LT were consistently situated at the paleolatitude of ~17°N, the LT had an approximate E-W extended banded shape in the entire Cretaceous. This interpretation supports the diachronous collision process of India and Eurasia, in which the collision first occurred at the western end of the LT, and subsequently the counterclockwise rotation of India closed the Neo-Tethys Ocean from the west to the east. On the other hand, the central part of the LT was situated at the paleolatitude of 12.9 ± 1.6°N, resulting in a shape of inverted triangle of the LT during the interval of the Cretaceous. This suggested that the India probably had collided with the LT quasi-synchronously at the western and central part of the Himalaya Terrane, and that the Neo-Tethys Ocean was closed simultaneously along the western and central segment of the Yarlung Zangbo suture zone. Subsequently, the Indian Plate began to experience counterclockwise rotation, approximately centered on the Western Himalaya syntaxis, which compressed the LT and resulted in non-uniform crustal convergence within the LT. The central part of the LT should experience larger amount of crustal convergence than that of the western part of the LT. © 2019 Elsevier B.V.
英文关键词	Collision of India and Eurasia; Cretaceous; Inclinational divergence; Paleomagnetism; Syntectonic growth strata
语种	英语
scopus关键词	collision zone; Cretaceous; crustal deformation; Eurasian plate; fold; Indian plate; paleomagnetism; plate convergence; sedimentation; tectonic setting; China; Indus-Yarlung Suture Zone; Lhasa Terrane; Xizang
来源期刊	EARTH-SCIENCE REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/209940
作者单位	Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Key Laboratory of Paleomagnetism and Tectonic Reconstruction, The Ministry of Land and Resources, Beijing, 100081, China; College of Resources, Environment and Tourism, Capital Normal University, Beijing, China; Henan Luoyang Hydrology and Water Resources Survey Bureau, Luoyang, 47100, China
推荐引用方式 GB/T 7714	Tong Y.,Yang Z.,Li J.,et al. New insights into the collision process of India and Eurasia: Evidence from the syntectonic-sedimentation-induced inclinational divergence of Cretaceous paleomagnetic data of the Lhasa Terrane[J],2019,190.
APA	Tong Y.,Yang Z.,Li J.,Pei J.,&Li J..(2019).New insights into the collision process of India and Eurasia: Evidence from the syntectonic-sedimentation-induced inclinational divergence of Cretaceous paleomagnetic data of the Lhasa Terrane.EARTH-SCIENCE REVIEWS,190.
MLA	Tong Y.,et al."New insights into the collision process of India and Eurasia: Evidence from the syntectonic-sedimentation-induced inclinational divergence of Cretaceous paleomagnetic data of the Lhasa Terrane".EARTH-SCIENCE REVIEWS 190(2019).