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咸水湖泊细粒重力流沉积及油气意义: 以柴达木盆地英西地区下干柴沟组上段为例*
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王小妮1, 杨智1, 冯有良1, 蒋文琦3, 龙国徽2, 伍坤宇2, 张洪1, 侯鸣秋1, 邢浩婷2, 张天舒1, 刘畅1, 魏琪钊1 |
Fine-grained gravity flow deposits and their petroleum significance in saline lacustrine basins: a case study from the Upper Member of Lower Ganchaigou Formation in Yingxi area of Qaidam Basin, China
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WANG Xiaoni 1, YANG Zhi 1, FENG Youliang 1, JIANG Wenqi 3, LONG Guohui 2, WU Kunyu 2, ZHANG Hong 1, HOU Mingqiu 1, XING Haoting 2, ZHANG Tianshu 1, LIU Chang 1, WEI Qizhao 1
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柴达木盆地英西地区下干柴沟组上段沉积岩相照片(一) A—泥流—泥质湍流—安静水体沉积岩相,柴平2井,2753.01~2753.25 m;B—半深湖化学沉淀与事件沉积互层岩相,a—LA2-1,柴2-4井,2800.14 m; b—LA2-2,柴平2井,2761.03~2761.22 m; C—滑塌—细粒碎屑流—泥流沉积岩相,左—柴平2井,2757.84~2758.08 m;右—2763.64~2763.94 m;D—细粒异重流沉积岩相,左—柴2-4井,2848.54 m;右—柴2-4井,2848.84 m(右)。M1: 富含有机质纹层状云灰质泥岩相,M2: 含有机质块状云灰质泥岩相; SSM1: 含有机质和粉砂屑的准层状粉砂质泥岩相; D1: 层状白云岩相; D2: 含云质、泥质碎屑发育变形构造的白云岩相; MD1: 纹层状泥质白云岩相; MSS2: 砂屑、泥屑顺层分布的泥质粉砂岩相; FSS1: 平行层理细粉砂岩相; FSS2: 波状层理细粉砂岩相; FSS5: 变形构造细粉砂岩相;CSS1: 含石膏和砾石的反递变层理粗粉砂岩相; CSS2: 含石膏和砾石的正递变层理粗粉砂岩相; CSS5: 含石膏变形构造白云质粗粉砂岩相 |
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