| 鄂尔多斯盆地两种不同成因古隆起的特征及其在油气勘探中的意义 |
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| 引用本文： | 解国爱,张庆龙,潘明宝,赵世龙,任文军,郭令智.鄂尔多斯盆地两种不同成因古隆起的特征及其在油气勘探中的意义[J].地质通报,2005,24(4):373-377. |
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| 作者姓名： | 解国爱 张庆龙 潘明宝 赵世龙 任文军 郭令智 |
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| 作者单位： | 1. 南京大学地球科学系,江苏,南京,210093
2. 长庆石油勘探局,陕西,西安,710021 |
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| 基金项目： | 高等学校博士学科点专项科研基金项目(编号:1999028437)资助。 |
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| 摘 要： | 鄂尔多斯盆地位于华北克拉通西部，是中国大型含油气盆地之一。基底结构复杂，具有明显的不均匀性，基底顸面表现为2个大型隆起，北部为伊克昭盟隆起，中南部为中央古隆起。伊盟隆起具有继承性，继承了结晶基底的形态，上石炭统太原组直接覆盖在变质基底之上。中央古隆起则是盆地西缘和南缘在元古宙秦(岭)祁(连)贺(兰)三又裂谷基础上发育的古元古代被动大陆边缘，并发展成为主动大陆边缘，于中奥陶世—中石炭世秦祁海槽向东、向北方向俯冲碰撞，形成古生代前陆盆地，其前隆部分平面上构成了L形的中央古隆起。
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| 关 键 词： | 鄂尔多斯盆地 伊克昭盟隆起 中央古隆起 古生界 前陆盆地 油气勘探 |
| 文章编号： | 1671-2552(2005)04-0373-05 |
| 修稿时间： | 2004年3月31日 |
Two different genetic types of paleouplift in the Ordos basin and its significance in oil and gas exploration |
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| Abstract: | The Ordos basin located in the west part of the North China craton is one of the large petroleum-bearing basins. It has a complex and obviously heterogeneous basement structure with two large uplifts on top of the basement. The northern one is called the Yimeng paleouplift, and the south-central one, the Central paleouplift. The Yimeng paleouplift inherits the shape of the crystalline basement, with the Upper Carboniferous directly covering the metamorphosed basement; whereas the Central paleouplift is the Paleoproterozoic passive continental margin that originated from the western and southern margins of the Ordos basin on the basis of the Proterozoic Qinling-Qilian-Helan triple rifts and developed as an active continental margin. During the Middle Ordovician to Middle Carboniferous, the Qinling-Qilian ocean trough was subducted and collided in east and north directions, thus forming the Paleozoic foreland basin, and its front bulge formed the L-shaped Central paleouplift. |
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| Keywords: | Ordos basin Yimeng paleouplift Central paleouplift Paleozoic foreland basin petroleum exploration |
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