气候变化领域集成服务门户(CCPortal): Early Cretaceous to Eocene magmatic records in Ladakh arc: Constraints from U-Pb ages of Deosai volcanics, northern Pakistan

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DOI	10.1002/gj.3730
	Early Cretaceous to Eocene magmatic records in Ladakh arc: Constraints from U-Pb ages of Deosai volcanics, northern Pakistan
	Jadoon, Umair Khan; Ding, Lin; Baral, Upendra; Qasim, Muhammad
通讯作者	Ding, L (通讯作者)
发表日期	2020
ISSN	0072-1050
EISSN	1099-1034
起始页码	5384
结束页码	5397
卷号	55 期号:7
英文摘要	This research provides a detailed U-Pb geochronological record of Deosai volcanics in the western Himalaya. The volcanics comprise basalt, andesite, dacite, and rhyolite and are part of the Kohistan-Ladakh arc, exposed east of the Nanga Parbat-Haramosh Massif. Based on the U-Pb ages, this volcanic suite is classified into three chronostratigraphic units: (a) Chota Pani volcanics, (b) Shatung Nala volcanics, and (c) Bara Pani volcanics, with ages ranging between 123-115, 86-63, and 48-46 Ma, respectively. This study suggests that the Chota Pani volcanics are arc-related, as their ages coincide well with the timing of initiation of the Kohistan-Ladakh arc. The Shatung Nala volcanics may have formed as a result of a collision between Kohistan-Ladakh arc and Karakoram Block (Eurasian Plate). Moreover, the U-Pb cluster age of Bara Pani volcanics coincides with the initial collision time between Indian and Eurasian plates in the western Himalaya, which strongly suggests its emplacement associated with the continental-continental collision. In addition, the dated granitic samples, yielding 120.9 +/- 4.5, 80.2 +/- 1.4, 50.42 +/- 0.55, and 45.24 +/- 0.64 Ma ages, provide further support that the emplacement of Deosai volcanic rocks took place as a consequence of closure of the northern and southern sutures, respectively.
关键词	INDIA-ASIA COLLISION SHYOK-SUTURE ZONE KOHISTAN ISLAND-ARC ISOTOPIC CONSTRAINTS TECTONIC EVOLUTION ZIRCON PROVENANCE N PAKISTAN HIMALAYA METAMORPHISM SUBDUCTION
英文关键词	Deosai volcanics; Karakoram Block; Kohistan-Ladakh arc; Nanga Parbat-Haramosh Massif; western Himalaya
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000544704000027
来源期刊	GEOLOGICAL JOURNAL
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/259924
推荐引用方式 GB/T 7714	Jadoon, Umair Khan,Ding, Lin,Baral, Upendra,et al. Early Cretaceous to Eocene magmatic records in Ladakh arc: Constraints from U-Pb ages of Deosai volcanics, northern Pakistan[J]. 中国科学院青藏高原研究所,2020,55(7).
APA	Jadoon, Umair Khan,Ding, Lin,Baral, Upendra,&Qasim, Muhammad.(2020).Early Cretaceous to Eocene magmatic records in Ladakh arc: Constraints from U-Pb ages of Deosai volcanics, northern Pakistan.GEOLOGICAL JOURNAL,55(7).
MLA	Jadoon, Umair Khan,et al."Early Cretaceous to Eocene magmatic records in Ladakh arc: Constraints from U-Pb ages of Deosai volcanics, northern Pakistan".GEOLOGICAL JOURNAL 55.7(2020).