兰州-民和盆地早白垩世的沉积环境分析

详细信息

Sedimentary environments of the Lanzhou-Minhe Basin during the Early Cretaceous

Research Institute of Geology and Mineral Resource Exploration, Lanzhou 730050, Gansu, China

摘要: 兰州-民和盆地早白垩世充填了巨厚的陆源碎屑物。笔者通过对碎屑物组合方式的研究,陆盆内为冲积扇相※湖泊相※湖控三角洲相的充填序列;通过对陆盆的基底特征、古流向、物源区和陆盆演化的分析,揭示了盆地的沉积特征。
- 沉积相 /
- 沉积特征 /
- 兰州-民和盆地
Abstract: The tremendous terrigenous sediments laid down in the Lanzhou-Minhe Basin during the Early Cretaceous. These Creatceous sediments mainly consist of a succession of lacustrine-dominated red clastic rocks and mudstones, and display a depositional sequence of alluvial fan facies, lacustrine facies and lacustrine-dominated delta facies. The deposition and evolution of the basin are discussed in detail on the basis of basin basement, palaeocurrent and provenance analysis.
- sedimentary facies /
- deposition /
- Lanzhou-Minhe Basin