青藏高原三叠纪沉积盆地与古生物特征

详细信息

Triassic sedimentary basins and paleontological features on the Qinghai-Xizang Plateau

Northwest Geological Party, Sichuan Bureau of Geology and Mineral Resources, Mianyang 621000, Sichuan, China

摘要: 青藏高原三叠纪沉积盆地形成演化可划分为早印支期和晚印支期两个阶段。按沉积盆地演化及古生物特征可划分为西藏型、巴颜喀拉型和西秦岭型3个组成部分;生物古地理区划相应归属于华夏特提斯区南方省西藏-滇西生态区、巴颜喀拉生态区和西秦岭生态区。
- 三叠纪 /
- 沉积类型 /
- 古生物 /
- 青藏高原
Abstract: The Triassic strata on the Qinghai-Xizang Plateau are conspicuous by their widespread occurrence, various types and abundant mineral resources. These sedimentary strata are considered to be assigned to the intracontinental rift basin deposits that differ from the oceanic basin deposits. The sedimentary basins on the Plateau have gone through two stages of evolution:early and late Indosinian, and may be grouped into three types:Xizang-type, Bayan Har-type and West Qinling-type according to the evolutionary patterns of the basins and paleontological features. Biopalaeogeographically the studied areas should be assigned to the Xizang-West Yunnan, Bayan Har and West Qinling ecological provinces.
- Triassic /
- sediment type /
- paleontology /
- Qinghai-Xizang Plateau