对藏北嘎色地区沙木罗组的新认识

基金项目:

中国地质调查局“1:25万邦多区幅、措麦区幅区域地质调查”(200013000009161)。

详细信息

New explanation of the Shamuluo Formation in the Gase region,northern Xizang

摘要: 笔者在西藏班公错-怒江结合带中段南缘嘎色地区的一套缺少化石依据的地层中,发现有孔虫Mesorbitolina sp.等化石,地层时代确定为晚侏罗世—早白垩世,层位应归属沙木罗组上部。该套地层地质时代的确定,对研究沙木罗组的沉积相,重塑古地理环境有十分重要意义。
- 嘎色 /
- 上侏罗—下白垩统 /
- 沙木罗组 /
- 生物 /
- 藏北
Abstract: The foraminifera Mesorbitolina sp.occurs in the unfossiliferous strata in the Gase region,northern Xizang.The stratigraphic ages are traced back to the Late Jurassic-Early Cretaceous.The strata should be assigned to the upper part of the Shamuluo Formation.The timing of the strata is significant to the sedimentary facies analysis and palaeogeographic reconstruction of the Shamuluo Formation.
- Gase /
- Upper Jurassic-Lower Cretaceous /
- Shamuluo Formation /
- organism /
- northern Xizang