| 巴里坤盆地地层展布规律和构造格架的综合地球物理认识 |
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| 引用本文： | 杨小鹏,梅岩辉,李世超,姜鹍鹏,赵庆英.巴里坤盆地地层展布规律和构造格架的综合地球物理认识[J].地球科学,2019,44(12):4222-4234. |
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| 作者姓名： | 杨小鹏 梅岩辉 李世超 姜鹍鹏 赵庆英 |
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| 作者单位： | 1.吉林大学地球科学学院, 吉林长春 130061 |
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| 基金项目： | 中国地质调查局项目121201229000160018国家自然科学基金项目41872234 |
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| 摘 要： | 巴里坤盆地夹持于麦钦乌拉岛弧和哈尔里克岛弧之间，其地层展布、断裂构造、油气成藏、盆山关系均不明确.使用大地电磁测深、航磁、地震等方法对其开展综合研究.研究表明:新生界沉积较薄，中生界及上二叠统地层从盆地中心向四周逐渐减薄，下二叠统和石炭系地层山前沉积略厚、向南逐渐变薄；盆地内部存在12条断裂，大多数为近东西走向的逆冲断裂，这些断裂构成研究区的基本构造格架；盆地可划分为北部斜坡、哈尔里克逆冲带、巴里坤坳陷三个二级构造单元；巴里坤坳陷大河构造为油气成藏的有利区域；南边哈尔里克山呈北西向向盆地内逆冲推覆，与盆地以哈尔里克断裂为界，盆地与北边麦钦乌拉山与以麦钦乌拉断裂为界，与西边博格达山以冬屋断裂为界.
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| 关 键 词： | 巴里坤盆地 大地电磁测深 构造格架 地球物理 油气成藏 |
| 收稿时间： | 2019-05-20 |
Comprehensive Geophysical Study on Stratigraphic Distribution Regularities and Tectonic Frameworks in Barkol Basin |
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| Abstract: | The Barkol basin is sandwiched between the Maqinwula Island Arc and the Harlic Island Arc. Until now, its internal stratigraphic distribution, fault structure, hydrocarbon accumulation and basin-mountain relationship are still not clear. In this paper, geophysical and geological methods such as magnetotelluric sounding, aeromagnetic, and seismic methods are adopted to carry out comprehensive research. The research results show that the Cenozoic sediments are relatively thin, and the Mesozoic and Upper Permian strata have the characteristics of thinning gradually from the center of the basin to the periphery. The Lower Permian and Carboniferous strata are characterized by thick Piedmont deposits and thinning southward. There are 12 faults in the basin, the strike of which is nearly east-west, most of which are thrust faults. These faults constitute the basic tectonic framework of the study area. The basin is divided into three secondary structural units:the northern slope, the Harlic thrust belt and the Barkol depression. The Dahe structure in the Barkol depression is a favorable area for hydrocarbon accumulation. The southern Mount Harlic is thrusting northwest into the basin that is bounded by the Harlic fault. The basin and the northern Mt. Maqinwula are bounded by the Mt. Maqinwula fault, and the western Mt. Bogda fault is bounded by the Dongwu fault. |
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