| 鄂尔多斯盆地西北部二叠系山西组古地理特征 |
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| 引用本文： | 林雄,王亚辉,侯中健.鄂尔多斯盆地西北部二叠系山西组古地理特征[J].沉积与特提斯地质,2009,29(3):29-35. |
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| 作者姓名： | 林雄 王亚辉 侯中健 |
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| 作者单位： | 1. 成都理工大学"油气藏地质及开发工程"国家重点实验室沉积地质研究院,四川成都,610059
2. 中海石油有限公司湛江分公司研究院,广东湛江,524057 |
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| 摘 要： | 本文以高分辨率层序地层学为理论基础,将山西组划分为6个中期旋回层序,并以此为编图单元编制了相应的砂体等厚图、地层等厚图及砂地比等值线图。基于基准面和可容空间的变化,分析了研究区古地理演化特征。研究表明,山32期至山12期,沉积作用以进积-加积为主,发育较大规模三角洲,沉积砂体较厚;山31期至山11期,沉积作用以进积-加积-退积为主,湖岸线向北推进,湖泊具有扩大的趋势;山2期三角洲平原规模较三角洲前缘大,山1期三角洲前缘有缩小的趋势。
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| 关 键 词： | 鄂尔多斯盆地 山西组 沉积相 古地理 |
Palaeogeography of the Permian Shanxi Formation in northwestern Ordos Basin |
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| LIN Xiong,WANG Ya-hui,HOU Zhong-jian.Palaeogeography of the Permian Shanxi Formation in northwestern Ordos Basin[J].Sedimentary Geology and Tethyan Geology,2009,29(3):29-35. |
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| Authors: | LIN Xiong WANG Ya-hui HOU Zhong-jian |
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| Institution: | 1 (1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation; Chengdu University of Technology; Chengdu 610059; Sichuan; China; 2.Zhanjiang Branch; CNOOC; Zhanjiang 524057; Guangdong; China); |
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| Abstract: | Six medium-term cyclic sequences have been distinguished for the Shanxi Formation in the light of high-resolution sequence stratigraphy,and associated maps are constructed,including the isopach map of sandstones,isopach map of strata and isogram of total sandstone thickness to stratigraphic thickness ratios.The palaeogeographic interpretation of the Permian Shanxi Formation is presented on the basis of base levels and accommodation spaces.The deposition of progradation and aggradation resulted in the format... |
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| Keywords: | Ordos Basin Shanxi Formation sedimentary facies palaeogeography |
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