摘要
野外考察和有关的研究结果表明,白垩纪阿尔布—赛诺曼期,在西藏中部沉积了由海相灰岩组成的郎山组;白垩纪坎潘期,在班戈一带出现由磨拉石建造组成的竞柱山组;新近纪中—上新世,西藏中部沉积了湖相的丁青组。因此,前人关于该区一些地层归属的厘定值得商榷。
Field survey and relevant study indicate that in the Cretaceous Albian-Cenomanian stages the Langshan Formation composed of marine limestone was deposited in central Tibet; in the Cretaceous Campanian stage, the Jingzhushan Formation consisting of molasse formations occurred in the Baingoin area; in the Neogene Miocene-Pliocene, the lacustrine Dêngqên Formation was deposited in central Tibet.
出处
《地质通报》
CAS
CSCD
北大核心
2003年第9期695-698,共4页
Geological Bulletin of China
关键词
西藏中部
郎山组(赛诺曼期)
竞柱山组(坎潘期)
丁青组(中—上新世)
问题讨论
Langshan Formation (Cenomanian)
Jingzhushan Formation (Campanian)
Dêngqên Formation (Miocene-Pliocene)
problem discussion
central Tibet
