鄂尔多斯盆地中奥陶统马五6亚段高频旋回层序研究:论海平面升降与横山凸起沉积分异效应*
钟寿康1,2, 谭秀成1,2, 聂万才3,4, 张道锋3, 杨梦颖1,2, 卢子兴3, 张欣玥1,2, 肖笛1,2

High-frequency cyclic sequence of the Ma56 submember of Middle Ordovician Majiagou Formation in Ordos Basin: indication for sea-level change and sedimentary differentiation effect of Hengshan uplift
Zhong Shou-Kang1,2, Tan Xiu-Cheng1,2, Nie Wan-Cai3,4, Zhang Dao-Feng3, Yang Meng-Ying1,2, Lu Zi-Xing3, Zhang Xin-Yue1,2, Xiao Di1,2
鄂尔多斯盆地中东部地区中奥陶统马五6亚段白云岩宏观与微观特征 A—泥质泥晶云岩,上泥岩下泥晶云岩,单偏光,T105井,3677.44 m,马五62;B—泥晶云岩,发育离散状与集合状石膏假晶,内部充填方解石,单偏光,T105井,3679.31 m,马五62;C—砂屑云岩,岩心照片,T105井,3678.40 m,马五62;D—砂屑云岩,重结晶作用导致发育颗粒幻影,颗粒内部选择性溶蚀,单偏光,T105井,3678.40 m,马五62;E—砾屑云岩,见不规则颗粒边缘,单偏光,T105井,3539.78 m,马五62;F—凝块云岩,岩心照片,T112井,3379.12 m,马五63;G—F局部素描;H—凝块云岩,格架中凝块组构发育,白云石胶结物充填,凝块间云质含量增加,单偏光,T112井,3378.95 m,马五62;I—叠层云岩,纹层状,发育白云石和少量方解石胶结物单偏光,T112井,3378.12 m,马五62;J—粘结砂屑云岩,见部分砂、砾屑选择性溶蚀,正交光,J5井,3541.84 m,马五63