云南省永胜县大安煤矿晚二叠世玄武岩对含煤建造的影响

Yongsheng County of Yunnan province Daan coal mine coal bearing formation of Late Permian basalt

矿区内火山活动贯穿了整个晚二叠世成煤期,早期发生的峨眉山玄武岩喷发规模大,为区内提供了煤系地层沉积的基底,在古地理条件上控制了成煤环境及煤层分布,并且为含煤地层沉积提供了丰富的物源。本文从煤系地层岩性、成煤环境、聚煤规律以及煤质特征四个方面分析了该区火山活动对晚二叠世含煤建造的影响。

Mining area in volcanic activity throughout the period of late Permian coal, early large emeishan basalt eruption provides a base of coal measures strata sedimentary zone, on the ancient geography environment and control the coal seam distribution, and provides a rich coal-bearing strata sedimentary provenance.This article from the coal measures strata lithology, coal forming environment and coal accumulating regularities and characteristics of coal quality four aspects analyzes the volcanic activity in the area of the influence of the late Permian coal-bearing build.