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New insights into the provenance of Cenozoic strata in the Qaidam Basin, northern Tibet: Constraints from combined U-Pb dating of detrital zircons in recent and ancient fluvial sediments
Song, BW (Song, Bowen)1,2; Zhang, KX (Zhang, Kexin)1,2,3; Hou, YF (Hou, Yafei)1; Ji, JH (Ji, Junhang)2,3; Wang, JX (Wang, Jiaxuan)3; Yang, YB (Yang, Yibo)4,5; Yang, TL (Yang, Tinglu)6; Wang, CW (Wang, Chaowen)7; Shen, TY (Shen, Tianyi)3
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
2019
Volume533Issue:0Pages:109254
DOI10.1016/j.palaeo.2019.109254
Abstract

Determining the provenance of Cenozoic strata in the Qaidam Basin is key to understanding the basin-mountain coupling history in the northern Tibetan Plateau (TP). However, the specific source areas of Cenozoic strata in the northern Qaidam Basin remain highly debated. Here, we combine analyses of detrital zircons U-Pb geochronology for recent and ancient fluvial sediments from the northern Qaidam Basin to trace source areas of Cenozoic strata and reconstruct related mountain-building processes. The results indicate that the diagnostic 270-240 Ma zircon U-Pb peak, which was previously recognized as the unique input of a southern source area, is widespread in the recent fluvial sediments of the northern Qaidam Basin. Given our new zircon U-Pb data, the source-to-sink transport processes of Cenozoic sediments in the northern Qaidam Basin can be summarized as follows. (1) The northern Qaidam Basin has received the eroded detrital material from a dominantly northern source throughout the Cenozoic. (2) The Qaidam BeiShan was uplifted already at least by the early Eocene and served as the single contributor of detritus to the Dahonggou (DHG) region, suggesting that far-field stress due to the India-Asia collision had been propagated to this region as early as the early Eocene. (3) An abrupt change in provenance is observed in the DHG region during 46.5-43.7 Ma. We interpret this middle Eocene source change as reflecting the onset of growth of the North Altyn Tagh Range, implying that the North Altyn Tagh Range was already serving as an important source area for the DHG region by the middle Eocene. (4) The South Qilian Range served again as the dominant source area for the DHG region after 24.6 Ma. The shift in provenance from the North Altyn Tagh Range to the South Qilian Range can be attributed to the uplift of the Saishiteng Shan.

Subject AreaGeosciences
WOS IDWOS:000487174100018
Language英语
Indexed BySCI
KeywordAltyn-tagh Fault Fission-track Evidence Resolution Magneto Stratigraphy Eastern Kunlun Mountains Tectonic Evolution Qilian Shan Nw China Northeastward Growth Geologic Evolution Qinghai Province
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
Cooperation Status国内
ISSN0031-0182
Department大陆碰撞与高原隆升重点实验室
URL查看原文
PublisherELSEVIER
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9111
Collection图书馆
Corresponding AuthorSong, BW (Song, Bowen); Zhang, KX (Zhang, Kexin)
Affiliation1.China Univ Geosci, Inst Geol Survey, Wuhan 430074, Hubei, Peoples R China;
2.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R Chi;
3.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Hubei, Peoples R China;
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China;
5.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;
6.East China Univ Technol, Sch Earth Sci, Nanchang 330013, Jiangxi, Peoples R China;
7.China Univ Geosci, Gemol Inst, Wuhan 430074, Hubei, Peoples R China.
Recommended Citation
GB/T 7714
Song, BW ,Zhang, KX ,Hou, YF ,et al. New insights into the provenance of Cenozoic strata in the Qaidam Basin, northern Tibet: Constraints from combined U-Pb dating of detrital zircons in recent and ancient fluvial sediments[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,533(0):109254.
APA Song, BW .,Zhang, KX .,Hou, YF .,Ji, JH .,Wang, JX .,...&Shen, TY .(2019).New insights into the provenance of Cenozoic strata in the Qaidam Basin, northern Tibet: Constraints from combined U-Pb dating of detrital zircons in recent and ancient fluvial sediments.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,533(0),109254.
MLA Song, BW ,et al."New insights into the provenance of Cenozoic strata in the Qaidam Basin, northern Tibet: Constraints from combined U-Pb dating of detrital zircons in recent and ancient fluvial sediments".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 533.0(2019):109254.
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