| 鄂尔多斯盆地南部奥陶系马家沟组白云岩特征及成因机理分析 |
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| 引用本文： | 黄正良,包洪平,任军峰,白海峰,武春英.鄂尔多斯盆地南部奥陶系马家沟组白云岩特征及成因机理分析[J].现代地质,2011,25(5):925-930. |
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| 作者姓名： | 黄正良 包洪平 任军峰 白海峰 武春英 |
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| 作者单位： | 中国石油长庆油田分公司勘探开发研究院,陕西西安710018;低渗透油气田勘探开发国家工程实验室,陕西西安710018 |
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| 摘 要： | 宏观与微观结合并以地球化学分析为主要手段,研究认为:鄂尔多斯盆地南部奥陶系马家沟组存在准同生白云岩化、渗透回流及混合水白云岩化、埋藏白云岩化和热液白云岩化4种白云岩化成因。准同生白云岩主要发育于马一、三、五段,由常规蒸发泵白云岩化形成;渗透回流及混合水白云岩由富镁盐水下渗白云岩化以及富镁盐水混同大气淡水对先成碳酸盐岩进行白云岩化共同作用形成;埋藏白云岩为大气降水溶蚀古陆老硅铝质岩石形成的盐水下渗和海(湖)水沿溶蚀孔洞下渗这两种白云岩化叠加形成的;热液白云岩为热液在粗晶粒白云岩孔隙或构造裂缝中溶蚀碳酸盐岩,过饱和后晶出。
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| 关 键 词： | 鄂尔多斯盆地 马家沟组 白云岩化 成因机理 地球化学特征 |
Characteristics and Genesis of Dolomite in Majiagou Formation of Ordovician, South of Ordos Basin |
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| HUANG Zheng-liang,BAO Hong-ping,REN Jun-feng,BAI Hai-feng,WU Chun-ying.Characteristics and Genesis of Dolomite in Majiagou Formation of Ordovician, South of Ordos Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2011,25(5):925-930. |
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| Authors: | HUANG Zheng-liang BAO Hong-ping REN Jun-feng BAI Hai-feng WU Chun-ying |
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| Affiliation: | HUANG Zheng-liang1,2,BAO Hong-ping1,REN Jun-feng1,BAI Hai-feng1,WU Chun-ying1,2( 1.Research Institute of Exploration and Devolopment,Changqing Oilfield Company,PetroChina,Xi' an,Shaanxi 710018,China,2.National Engineering Laboratory of Exploration and Development of Low Permeability Oil/Gas Fields,Xi'an,China) |
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| Abstract: | There developed four kinds of dolomitization in genesis in Majiagou Formation of southern Ordos basin:penecontemporaneous dolomitization,circumfluence and mixing water dolomitization,burial dolomitization and hydrothermal dolomitization,based on the study of macro-analysis,micro-analysis and geochemical characteristics.Penecontemporaneous dolostone developed in 1st,3rd and 5th members of Majiagou Formation,and its genesis is evaporative pumping dolomitization.Circumfluence and mixing water dolostone is prod... |
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| Keywords: | Ordos basin Majiagou Formation dolomitization genesis geochemical characteristics |
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