准噶尔盆地玛湖凹陷下二叠统风城组碱湖岩石特征与成因*
汪梦诗1, 张志杰1,2, 周川闽1,2, 袁选俊1,2, 林敏捷1, 刘银河1,2, 成大伟1,2

Lithological characteristics and origin of alkaline lacustrine of the Lower Permian Fengcheng Formation in Mahu Sag, Junggar Basin
Wang Meng-Shi1, Zhang Zhi-Jie1,2, Zhou Chuan-Min1,2, Yuan Xuan-Jun1,2, Lin Min-Jie1, Liu Yin-He1,2, Cheng Da-Wei1,2
准噶尔盆地玛湖凹陷风城组白云岩及云质岩岩性特征 a—岩心中条带状、斑状白云岩,F26井,3298,m;b—纹层状云质泥岩,阴极发光,可见分散状橙红色泥微晶白云石,FN1井,4361,m;c—斑状白云石,单偏光,FN1井,4360,m;d—c照片阴极发光,可见多期白云石环带,铁白云石环带不发光;e—细晶白云岩,晶间浅色充填物为硅硼钠石,暗色为残余岩屑,单偏光,FN1井,4125,m;f—e照片阴极发光,可见白云石环带结构,铁白云石不发光,硅硼钠石发暗色光;g—灰色白云石普遍具浅色铁白云石环带,深色为充填粒间和交代颗粒的硅硼钠石,扫描电镜,FN1井,4361,m;h—方解石 交代白云石,单偏光,FN1井,4237,m