鄂尔多斯盆地东缘山西组2段海陆过渡相页岩高分辨率层序划分及勘探地质意义

梁岳立,葛家旺,赵晓明,张喜,李树新,聂志宏

High-resolution sequence division and geological significance of exploration of marine-continental transitional facies shale in the 2nd Member of Shanxi Formation， eastern margin of Ordos Basin

Yueli LIANG,Jiawang GE,Xiaoming ZHAO,Xi ZHANG,Shuxin LI,Zhihong NIE

图4 鄂尔多斯盆地东缘A1井山西组层序界面岩心特征 （a）下石盒子底部灰色细砂岩；（b）山1段底部灰色中砂岩；（c）山21亚段底部灰色细砂岩；（d）山23亚段顶部5#煤层；（e）山23亚段底部黑色页岩；（f）太原组顶部灰黑色灰岩

Fig.4 Rock core characteristics of sequence interface of Shanxi Formation of Well A1 in the eastern margin of Ordos Basin