滇东煤田长坡井田晚二叠世聚煤环境与成煤模式  

On Late Permian Coal-accumulating Environment and Coal-forming Patterns in Diandong Coalfield

作　　者：杨永毅[1] 郭昆林[2] 

机构地区：[1]昆明冶金高等专科学校建筑与艺术学院,云南昆明650033 [2]昆明冶金高等专科学校 冶金与矿业学院,云南昆明650033

出　　处：《昆明冶金高等专科学校学报》2006年第3期40-43,共4页Journal of Kunming Metallurgy College

摘　　要：通过对滇东煤田长坡井田形成的地质背景和晚二叠纪含煤地层沉积特征的综合分析,提出该区晚二叠世为陆缘盆地过渡壳的潮坪聚煤环境和三角洲聚煤环境。海陆过渡环境演化顺序为:碳酸盐台地-泻湖潮坪-浅水三角洲聚煤成煤模式,和局限海底火山地台-泻湖潮坪-浅水三角洲聚煤成煤模式。从晚二叠纪中期末至三迭纪各种聚煤条件充分配合,形成本区主要可采煤层。After a Late Permian coal-general analysis of the geological background and the expositional characteristics of the bearing environment and coal-formi strata in Diandong Coalfield, eastern Yunnan Province, a typical coal-forming ng effects with the tidal and the deltas are discussed in details. The sequence of environment evolution of the Late Permian strata in this area is： the confining carbonate platform-the lagoons and the tidal fiats-the shallow water deltas of sea. The harmonization of various conditions is suitable to coal-accumulating of the Late Later stage Permian. Thus the area becomes a very important coal- accumulating environment in eastern Yunnan Province.

关 键 词：聚煤环境 成煤模式 晚二叠世 滇东煤田 长坡井田 

分 类 号：P618.11[天文地球—矿床学]