• 责任者：Wen Huaijun (Qinghai No.105 Coal Geological Exploration Team ; Xining 810007 ; China) ; Shao Longyi
• 刊名：Geological Bulletin of China
• 出版年：2011
• 卷期：30(12)
• 关键词：煤田勘探 ; coal exploration ; 青海 ; Qinghai Province
• 页码：p.1823-1828
• 图表：3 illus., 1 table, 5 refs.
• 分类号：1004
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

Gas hydrates were found in the permafrost of the Juhugeng ore district (JHG) in the Muli coalfield of Qinghai Province. This paper has investigated the geological structure, coal-bearing stratigraphy and depositional facies of the Jurassic coal measures in the JHG area. Coal resources are preferentially preserved in the northern syncline. Coals were formed in the Middle Jurassic Muli Formation and Jiangcang Formation, and the regionally minable coals are preserved in the Upper Member of the Muli Formation. Coal accumulations mainly occur in the swamp environment developed in the abandoned braided river system and in the swamp environment developed by shallowing of the lacustrine and subaqueous delta.