Paleomagnetic Study on the Oil-Gas Geology of the Ordos Basin
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摘要: 古地磁研究结果表明，鄂尔多斯盆地寒武纪－早中奥陶世位于北纬１４°～２０°的古纬度区内，气候温暖潮湿，其南部和北部边缘的滨浅海相地层中可能富含生物有机质，是寻找该时期油气资源的有利地区；晚奥陶世－早石炭世，它可能经历了大规模的南北向水平构造迁移；晚石炭世－二叠纪，盆地处于北纬２０°左右地区，广泛发育的湖沼相沉积地层是煤成油、气的主要源岩层；三叠纪－侏罗纪，它位于北纬２４°～３１°，干湿交替的气候环境和差异构造旋转作用，为盆地边缘的油气形成和聚集创造了良好条件，因此有希望找到更多的中生代油气资源。Abstract: The results of paleomagnetic research show that the Ordos Basin was located within the paleolatitude of 14°～20°N during the Cambrian and Early-middle Ordovician Periods with a warmer and moist climate, of which the littoral-neritic sedimentary strata in the north and south margins were very rich in organic materials, being favorable fields to find Early Paleozoic oil and gas. From the Late Ordovician to Early Carboniferous, the Ordos Basin may have a large-scale N-S horizontal tectonic displacement. In the Late Carboniferous and Permian Period, the location of Ordos Basin was at around 20°N with widespread limnogenic deposits,being important source rocks of Coal-oil and coal-gas. From the Triassic to Jurassic Period,the Ordos Basin was located at 24°～31°N. And the change of arid and humid climate and the differential tectonic rotations among the Ordos Block and other blocks resulted in favorable conditions for oil and gas formation and accumulation within the marginal areas of the basin. Thus, much more Mesozoic oil and gas reources should be found hopefully.
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Key words:
- Ordos Basin /
- Paleomagnetism /
- Oil and Gas resources
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[1] 1.程国良等，1988.鄂尔多斯地块构造演化的古地磁学研究，地震地质，10(2):81-87。
2.方大钧等，1988，山西宁武盆地三叠纪、侏罗纪古地磁结果的构造意义，科学通报，33(2):133-135。
3.E. A.黑尔伍德著，舒孝敬译，1991，磁性地层学，地质出版社。
4.Zhao X. X. et al.，1987,Palaeotnagnetic constrains on collision and rotation of North and South China, Nature, 327.141-144.
5.林金录，1987，中国古地磁数据表(1)，地质科学，(2):183-187。
6.林金录，1989，中国古地磁数据表(2)，地质科学，(4):400-404。
7.McElhinny, M. W. et al.，1981，Fragmentation of Asia in the Permian. Nature, 293. 212-216.
8.孟自芳等，1990，酒西盆地晚二叠纪古地磁极及其大地构造意义，沉积学报，8(3):58-65。
9.孟自芳，1992，河西走廊晚二叠世红层的古地磁结果，科学通报，137(7):637 - 640。
10. 孟自芳等，1992，河西走廊上志留统古地磁结果的大地构造意义，中国科学(B),(5):531- 536。
11.黄华芳等，1993，酒西盆地南缘推筱构造及其含油领域，石油与天然气地质，14(3), 181-190。 -
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