气候变化领域集成服务门户(CCPortal): Provenance analysis of the Mesozoic Hoh-Xil-Songpan-Ganzi turbidites in northern Tibet: Implications for the tectonic evolution of the eastern Paleo-Tethys Ocean

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DOI	10.1002/tect.20013
	Provenance analysis of the Mesozoic Hoh-Xil-Songpan-Ganzi turbidites in northern Tibet: Implications for the tectonic evolution of the eastern Paleo-Tethys Ocean
	Ding, L.; Yang, D.; Cai, F. L.; Pullen, A.; Kapp, P.; Gehrels, G. E.; Zhang, L. Y.; Zhang, Q. H.; Lai, Q. Z.; Yue, Y. H.; Shi, R. D.
通讯作者	Ding, L (通讯作者)
发表日期	2013
ISSN	0278-7407
EISSN	1944-9194
起始页码	34
结束页码	48
卷号	32 期号:1
英文摘要	Mesozoic strata of the Hoh-Xil-Songpan-Ganzi complex in northern Tibet are exposed in a vast (> 370,000 km(2)) triangle-shaped orogenic belt bound by the Longmen Shan thrust belt in the east, the Kunlun terrane and North China block in the north, and the Qiangtang terrane and Yidun arc in the south. These strata consist of Middle-Upper Triassic submarine fan and deep marine facies rocks that were deposited in the Paleo-Tethys Ocean. Late Triassic-Early Jurassic contractional deformation in the eastern Hoh-Xil-Songpan-Ganzi complex marks the demise of the Paleo-Tethys Ocean basin and the accretion of the Gondwana-derived Qiangtang terrane to Eurasia. We conducted geological mapping, regional stratigraphic analyses, and U-Pb geochronology of detrital zircons (n = 4128) on the Mesozoic sequences exposed in the Hoh-Xil-Songpan-Ganzi complex, Kunlun terrane, and Qiangtang terrane. We identify for the first time marine silciclastic sandstone and shale of Jurassic age in the northwestern Hoh-Xil-Songpan-Ganzi complex that unconformably overlie Upper Triassic turbidites. Zircon age data indicate that the Middle-Upper Triassic marine gravity-flow deposits of the Hoh-Xil-Songpan-Ganzi complex were shed from the North and South China blocks, and Middle-Late Triassic ultrahigh-pressure Qinling-Dabie orogenic belt, as well as the Kunlun and Qiangtang terranes. In addition, the detrital zircon results suggest vast sediment source to sink distances (> 1500 km) for the Middle-Upper Triassic Hoh-Xil-Songpan-Ganzi strata, which is consistent with tectonic models for the Paleo-Tethys Ocean basin that incorporate significant components of horizontal tectonic transport like opening of large back-arc basins in response to oceanic slab rollback. Citation: Ding, L., et al. (2013), Provenance analysis of the Mesozoic Hoh-Xil-Songpan-Ganzi turbidites in northern Tibet: Implications for the tectonic evolution of the eastern Paleo-Tethys Ocean, Tectonics, 32, 34-48 doi:10.1002/tect.20013.
关键词	DETRITAL-ZIRCON GEOCHRONOLOGY GARZE FOLD BELT HIGH-PRESSURE ROCKS U-PB GEOCHRONOLOGY CENTRAL CHINA SEDIMENTARY RECORD WESTERN TIBET ORDOS BASIN PLATEAU CONSTRAINTS
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000317831300003
来源期刊	TECTONICS
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/258167
推荐引用方式 GB/T 7714	Ding, L.,Yang, D.,Cai, F. L.,et al. Provenance analysis of the Mesozoic Hoh-Xil-Songpan-Ganzi turbidites in northern Tibet: Implications for the tectonic evolution of the eastern Paleo-Tethys Ocean[J]. 中国科学院青藏高原研究所,2013,32(1).
APA	Ding, L..,Yang, D..,Cai, F. L..,Pullen, A..,Kapp, P..,...&Shi, R. D..(2013).Provenance analysis of the Mesozoic Hoh-Xil-Songpan-Ganzi turbidites in northern Tibet: Implications for the tectonic evolution of the eastern Paleo-Tethys Ocean.TECTONICS,32(1).
MLA	Ding, L.,et al."Provenance analysis of the Mesozoic Hoh-Xil-Songpan-Ganzi turbidites in northern Tibet: Implications for the tectonic evolution of the eastern Paleo-Tethys Ocean".TECTONICS 32.1(2013).