可可西里盆地中新统五道梁群湖相碳酸盐岩岩石学特征与沉积环境分析  

Petrology and sedimentary environments of the lacustrine carbonate rocks from the Miocene Wudaoliang Group in the Hoh Xil Basin,Qinghai

作　　者：周恳恳[1] 伊海生[1] 林金辉[1] 

机构地区：[1]成都理工大学沉积地质研究院,四川成都610059

出　　处：《沉积与特提斯地质》2007年第1期25-31,共7页Sedimentary Geology and Tethyan Geology

基　　金：国家自然科学基金项目"青藏高原第三纪沉积体制转型与构造及气候变化耦合过程的研究"(40572077)

摘　　要：湖相碳酸盐岩在可可西里盆地的古、新近纪地层中分布广泛,更是中新统五道梁群沉积的主要组成部分。五道梁群湖相碳酸盐岩分为生物粘结灰岩(叠层石)、泥晶灰岩、颗粒灰岩与泥晶白云岩四大类,反映出沉积环境为一个具有浅水—半深水、高盐度、半封闭—封闭特点的综合湖泊系统。The lacustrine carbonate rocks occur on a wide range of scales in the Palaogene and Neogene strata in the Hoh Xil Basin, Qinghai, and constitute an important part of the Miocene Wudaoliang Group sediments. The lacustrine carbonate rocks in the Wudaoliang Group consist of boundstone （stromatolite）, micritic limestone, grainstone and micritic dolostone which were laid down in the shallow-water to bathyal, high-salinity and enclosed to semi-enclosed lake systems.

关 键 词：可可西里盆地 中新统 五道梁群 湖相碳酸盐岩 岩石学 沉积环境 青海 

分 类 号：P588.245[天文地球—岩石学]