Migration Law of Mesozoic Qaidam Basin Depocenters

Autor: Ping Li Wang, Haiyan Liu, Da Wei Lv, Xue Zheng, Yu Lin Lv
Rok vydání: 2012
Předmět:
Zdroj: Advanced Materials Research. :63-66
ISSN: 1662-8985
DOI: 10.4028/www.scientific.net/amr.524-527.63
Popis: 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.
Databáze: OpenAIRE