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内蒙古巴音戈壁盆地因格井坳陷下白垩统湖相热水沉积岩特征及成因*
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向龙1,2, 刘晓东1,2, 刘平辉1,2, 戴朝成1,2, 江文剑1,2 |
Genesis and characteristics of lacustrine hydrothermal-sedimentary rock of the Lower Cretaceous in Yingejing sag of Bayan Gebi Basin, Inner Mongolia
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Xiang Long 1,2, Liu Xiao-Dong 1,2, Liu Ping-Hui 1,2, Dai Chao-Cheng 1,2, Jiang Wen-Jian 1,2
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内蒙古巴音戈壁盆地因格井坳陷下白垩统巴音戈壁组热水沉积岩沉积构造特征 a—网脉状构造,标记处白色网状由方沸石及白云石组成,TZK-2井,765 m;b—暗色泥质物与粉—细晶白云石、方沸石混合均匀分布,单偏光;c—“斑状”构造,标记处白色“斑状”颗粒为粉—细晶、粗晶白云石,TZK-1井,595 m;d—菱形粗晶白云石与粉—细晶白云石呈团块状分布于暗色泥质物中,单偏光;e—深灰色块状泥岩,TZK-1井,520 m;f—深灰色泥岩背景下发育白色与灰白色纹层;g—f中标记处主要由白云石、铁白云石、方沸石组成,TZK-2井,136 m,染色薄片,单偏光;D1: 泥晶白云石;D2: 粉—细晶白云石;D3: 粗晶白云石;Ana: 方沸石;Ank: 铁白云石;Py: 黄铁矿;下同 |
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