河南平顶山矿区含煤地层沉积环境及其对煤系气成藏的控制*
李延河1,2, 王保玉3,4, 刘顺喜3,4, 倪小明3, 王娟3,4, 胡斌3,4

Sedimentary environment of coal-bearing strata and its control on accumulation of coal measure gas in Pingdingshan mining area,Henan Province
LI Yanhe1,2, WANG Baoyu3,4, LIU Shunxi3,4, NI Xiaoming3, WANG Juan3,4, HU Bin3,4
平顶山矿区山西组分流河道砂岩中的交错层理特征 a—楔状交错层理,底部显示侵蚀面,砂岩与其下伏薄层状砂质泥岩呈截切关系; b—板状交错层理,风化面突显前积纹层(图片来自研究区北部露头剖面)