• 责任者：Liu Yunlong (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Li Guobiao
• 刊名：Geoscience
• 出版年：2012
• 卷期：26(1)
• 关键词：碳酸盐岩 ; carbonate rocks ; 沉积微相 ; sedimentary microfacies ; 沉积环境 ; sedimentary environment ; 西藏 ; Tibet
• 页码：p.22-35
• 图表：9 illus., 1 table, 28 refs.
• 分类号：0803
• 出版序号：20130185
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

This paper carried out a detailed study on the Cretaceous fossil carbonate microfacies of Gamba. Twelve types of microfacies (MF1-MF12) and seven types of biofacies had been recognized. On the basis of these, the research made a preliminary discussion on the environmental evolution of Tibetan Tethys during Cretaceous, which could be concluded as follows: a transgression took place during the Barremian-Aptian. In the early of Albian, Gamba area was generally in a regressive environment. From the Late Albian to Cenomanian,  the seawater had a deepening trend．There was a big transgression which took place during the Turonian and lasted to Santonian-Coniacian. The seawater became shallow rapidly during Maastrichtian.