Sub-Lacustrine Fan of Chengdian and Zircon U-Pb Ages and Constraint on Its Provenance in Biyang Depression, Nanxiang Basin , China
详细信息
- 责任者：Zhang Jianguang (Faculty of Earth Resources ; China University of Geosciences ; Wuhan 430074 ; China) ; Yao Guangqing
- 刊名：Earth Science
- 出版年：2011
- 卷期：36(6)
- 关键词：冲积扇 ; alluvial fans ; 碎屑 ; clasts ; 铀—铅计时 ; U-Pb dating ; 南襄盆地 ; Nanxiang Basin ; 泌阳凹陷 ; Biyang Sag
- 页码：p.1105-1118
- 图表：9 illus., 2 tables, 47 refs.
- 分类号：0803
- issnNo：ISSN1000-2383
- isbnNo：CN42-1233/P
摘要
Aiming at Chengdian deep water sandstone in Biyang depression of Nanxiang basin, we analyzed the core, the particle size, thin section, heavy minerals testing materials, structure of sandbody and the geophysical response of sedimentary sandbody, and found that the sub-lacustrine fan is an isolated body with fine and coarse lithology. The result shows: zircons microarea apparent ages of Chengdian sub-lacustrine and Houzhuang delta mainly similarly distribute between 115 Ma and 166 Ma with single peak and the magmatic zircons occupy the main part, with a few metamorphic zircons.