U-Pb Chronological Characteristics of Late Triassic Sediment in Southwestern Ordos and Its Tectonic Significance

• 责任者：Song Lijun (State Key Laboratory of Continental Dynamics ; Department of Geology ; Northwest University ; Xi’an 710069 ; China) ; Chen Juanlu
• 刊名：Acta Geologica Sinica
• 出版年：2010
• 卷期：84(3)
• 关键词：物源区 ; provenance ; 碎屑 ; clasts ; 铀—铅计时 ; U-Pb dating ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.370-386
• 图表：7 illus., 2 table, 91 refs.
• 分类号：0803
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

///To make sure the sedimental sources and its development of Yanchang Formation is the key of restoring prototype basin, regional tectonic evolution and breakage of western North China craton in Late Triassic on southwest edge of Ordos Basin. The results indicate that the study area was under the regional dextral strike slip dynamic environment in Late Triassic. It can be divided into three stages in Late Triassic, early stage (231 ~ 225 Ma), middle stage (225 ~ 218 Ma) and late stage (218 ~ 210 Ma), respectively.