青藏高原晚白垩世地层区划

基金项目:

中国地质调查局项目(1212011121257)

详细信息

Stratigraphic regionalization of the Upper Cretaceous strata on the Qinghai-Xizang Plateau

Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, Sichuan, China

摘要: 对青藏高原晚白垩世地层进行了系统的梳理,开展了青藏高原晚白垩世地层区划的初步研究,共划分出3个地层大区、12个地层区、12个地层分区。详细介绍了各个地层区的上白垩统的地层命名系统及发育情况,其中青藏高原北部祁连-柴达木-巴颜喀拉-羌塘地层大区主要为河湖相沉积的陆相地层系统;青藏高原中部班公湖-双湖-怒江地层大区主要为一套陆相磨拉石沉积地层;青藏高原南部冈底斯-喜马拉雅地层大区主要以海相地层、海陆过渡相地层为主。
- 青藏高原 /
- 上白垩统 /
- 地层区划
Abstract: The Upper Cretaceous strata on the Qinghai-Xizang Plateau are divided into 3 stratigraphic megaprovinces, 12 stratigraphic provinces and 12 stratigraphic subprovinces. The stratigraphic megaprovinces include the Qilian-Qaidam-Bayan Har-Qiangtang stratigraphic megaprovince in the northern part of the Plateau which consists dominantly of the continental stratigraphic systems in the fluviolacustrine facies, the Bangong LakeShuanghu-Nujiang stratigraphic megaprovince in the central part of the Plateau which is mostly built up of the continental molasse sedimentary strata, and the Gangdise-Himilayan stratigraphic megaprovince in the southern part of the Plateau which is mainly made up of the marine and marine-conitnental transitional strata.
- Qinghai-Xizang Plateau /
- Upper Cretaceous /
- stratigraphic regionalization