| Autor: |
Fan Lv, Bo Ran, Shugen Liu, Zijian Wang, Tong Sun, Xianghui Li, Yuyue Han, Ke Liang |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Frontiers in Earth Science, Vol 10 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2296-6463 |
| DOI: |
10.3389/feart.2022.982354 |
| Popis: |
The research on the pre-collisional tectonic evolution of basin-mountain system at the margin of Tibetan plateau provides insights into the upward and outward growth mechanism of the plateau in the Cenozoic. Lower Jurassic Baitianba Formation quartz-rich conglomerate exposed along the edge of the northwest Sichuan Basin whereas these deposits were incompatible with peripheral carbonatite-dominated orogenic belts, which aroused our great interest. To better understand the origin of quartz-rich conglomerate and early erosional unroofing history of northeastern Tibetan Plateau margin, this study focuses on sandstone petrography analysis along with U-Pb age dating of the detrital zircons of Baitianba Formation gravel and sandstone sample from northwestern Sichuan Basin, which is located to north Longmen Shan thrust belt. In the distinctive Lower Jurassic quartz gravel samples, there are at least two distinct provenance sources. One is characterized by a unimodal age population at ca. 400–1,000 Ma but the absence of younger detrital zircons ( |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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