鄂尔多斯盆地西缘上石炭统羊虎沟组岩相类型及沉积模式*
王集1, 王峰1,2, 赵伟波3, 虎建玲3, 吴静仪1, 肖云宵1, 陈洪德1,2, 刘磊1,2, 王志伟1, 朱淑玥1

Lithofacies types and sedimentary models of the Upper Carboniferous Yanghugou Formation in western margin of Ordos Basin
WANG Ji1, WANG Feng1,2, ZHAO Weibo3, HU Jianling3, WU Jingyi1, XIAO Yunxiao1, CHEN Hongde1,2, LIU Lei1,2, WANG Zhiwei1, ZHU Shuyue1
鄂尔多斯盆地西缘羊虎沟组不同沉积相岩心及碎屑组分微观特征 a—三角洲平原分流河道微相,细砂岩,板状交错层理,巴参2井,2926.32 m;b—潮控三角洲前缘水下分流河道微相,底部含砾砂岩,上部中砂岩,板状交错层理,阿参1井,3340.92 m;c—潮控三角洲前缘水下分流河道微相,细砂岩,潮汐层理,阿参1井,3347.73 m;d—潮道微相,灰白色粗粒石英砂岩,含冲刷泥砾,乐1井; 1327.48 m;e—潮汐沙坝微相,砂岩夹薄层泥岩,鄂33井,3948.60 m;f—潮汐沙坝微相,细砂岩,羽状交错层理,鄂33井,3955.80 m;g—沙坪微相,砂岩与薄层泥岩互层砂纹层理,兔西1井,3107.20 m;h—混合坪—泥坪微相,砂泥互层,同沉积变形构造,层面见虫孔,阿参1井,3267.29 m;i—混合坪—泥坪微相,粉细砂岩,脉状层理,阿参1井,3259.45 m;j—混合坪—泥坪微相,砂泥互层,透镜状层理,阿参1井,3268.07 m;k—潟湖微相,黑色泥岩,见植物碎片,惠探1井,4117.70 m;l—陆棚相,粉砂质泥,纹层构造见滑擦镜面,忠6井,3453.80 m;m—长石岩屑砂岩,分选较好,巴参2井,2926.5 m,羊一段,正交光; n—细—中粒岩屑石英砂岩,次棱角—次圆状,阿参1井,3343.6 m,羊二段,正交光; o—岩屑石英砂岩,分选较差,乐1井,1326.9 m,羊二段,正交光; p—岩屑石英砂岩,分选较好,次圆状,鄂33井,3951.2 m,羊一段,正交光; q—岩屑石英砂岩,分选中等,兔西1井,3104.2 m,羊一段,正交光; r—细—中粒岩屑砂岩,见菱铁矿化条带,阿参1井,3260.1 m,羊二段,正交光; s—石英砂岩,分选好,磨圆好,惠探1井,4116.7 m,羊一段,正交光; t—岩屑石英砂岩,见石英加大,忠6井,3455.5 m,羊二段,正交光