鄂尔多斯盆地东缘奥陶系马家沟组四段豹斑状云质灰岩特征及成因: 以关家崖剖面为例*
许杰1,2, 肖笛1,2, 苏文杰3, 晏巍4, 钟寿康1,2, 杨鸣一5, 杨梦颖1,2, 谭秀成1,2

Characteristics and genesis of leopard-spotted dolomitic limestone in the Member 4 of Ordovician Majiagou Formation: a case study from Guanjiaya section in eastern margin of Ordos Basin
Xu Jie1,2, Xiao Di1,2, Su Wen-Jie3, Yan Wei4, Zhong Shou-Kang1,2, Yang Ming-Yi5, Yang Meng-Ying1,2, Tan Xiu-Cheng1,2
鄂尔多斯盆地东缘关家崖剖面中奥陶统马家沟组四段豹斑状云质灰岩中的不规则—花斑状豹斑特征 a—不规则—花斑状斑块,具有边界扩溶与角砾化特征;b—序列顶部的岩性突变面;c—斑块交叉切割与角砾化;d—网状斑块与角砾化,斑块由灰质砂砾和粉晶白云石构成,图a局部镜下照片;e—斑块内的半自形—自形粉晶白云石与交代的残余灰质; f—斑块与基质渐变过渡,见方解石交代形成的石膏假晶