西藏北部拉竹龙地区泥盆纪岩石地层单位划分与时代讨论

基金项目:

中国地质调查局“1∶25万《土则岗日幅》(I44C002003)、《托和平错幅》(I44C002004)区域地质调查(200313000011)”。

详细信息

Division and ages of the Devonian lithostratigraphic units in Lazhuglung, northern Xizang

1. Jinzhong Branch, Shanxi Institute of Geological Survey, Jinzhong 030600, Shanxi, China;
2. No. 217 Geological Party, Shanxi Bureau of Geology and Mineral Resources, Datong 037008, Shanxi, China

摘要: 在详细描述西藏北部拉竹龙地区泥盆纪地层剖面的基础上,根据在前人所划的奥陶系兽形湖组中采集到的大量属于泥盆纪的腕足类化石,修订了兽形湖组的定义,从而将区内泥盆纪地层划分为兽形湖组、拉竹龙组,并根据生物化石资料讨论了各组的时代。
- 拉竹龙 /
- 泥盆纪 /
- 岩石地层 /
- 时代 /
- 藏北
Abstract: The Devonian strata in the Lazhuglung region, northern Xizang have been redivided, on the basis of abundant Devonian brachiopods fossils from the previously established Ordovician Shouxinghu Formation, into the two formations:Shouxinghu Formation and the first member (Dolostone Member) and second member (Limestone Member) of the Lazhuglung Formation. The ages of these Formations are assigned mostly to the Early-Late Devonian.
- Lazhuglung /
- Devonian /
- lithostratigraphic unit /
- ages /
- northern Xizang