Migration Law of Mesozoic Qaidam Basin Depocenters

Abstract:

According to stratigraphy and distribution features of the Qaidam Basin, and further the formation and migration of it’s depocenters, it is considered that the Middle-Upper Triassic were mainly sags scattered among the Qilian Mountains, the Alabasitao Mountains and the Kunlun Mountains; the Early Jurassic depocenters were located mainly in Lenghu depression and Yiliping sag at the northwest of the basin; several Middle Jurassic depocenters distributed from the northwest to the southeast of the basin along Sertengshan-Yuqia near front of the Qilian mountains; the Late Jurassic-Cretaceous depocenters moved east and south. The basin had been larger since the Middle Jurassic, and the sedimentary facies changed from semideep-deep lacustrine of the Early-Middle Jurassic to near-source variegated fluvial-lacustrine of the Late Jurassic and brownish red lakeshore of the Early Cretaceous.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 63-66
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.63
• Online since: May 2012
• Authors: Ping Li Wang, Da Wei Lv, Hai Yan Liu, Xue Zheng, Yu Lin Lv
• Keywords: Depocenter, Mesozoic, Migration, Qaidam Basin

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