| 航空重磁构造分层与新层系研究——以松辽盆地嫩江—林甸地区为例 |
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| 关键词:airborne gravity and magnetic tectonolayering new strata Nenjiang–Lindian Songliao basin |
| 基金项目:中国地质调查局地质调查项目“松辽盆地及外围航空物探调查”(编号: DD20190028) |
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| Airborne Gravity and Magnetic Tectonolayering and New Strata:Exemplified by Nenjiang–Lindian Area of Songliao Basin |
| In this study, the structural characteristics and the new hydrocarbon strata series of Songliao basin were investigated using structural stratification based on the latest airborne gravity and magnetic data, density and magnetic measurements, and drilling and seismic data, and a three-dimensional framework was constructed in the shallow, middle, and deep strata of the basin. This study provides a systematic analysis of the depths of the bottoms of the Upper Cretaceous and the Mesozoic, the depth of the magnetic basement top, and the thicknesses of the Upper Cretaceous, Upper Jurassic–Lower Cretaceous, and Upper Paleozoic using a combination of qualitative analysis and quantitative calculation, which provide important geophysical evidences of the new petroliferous strata survey of the regional Upper Paleozoic and Upper Jurassic–Lower Cretaceous, including its influence on the different structural characteristics of oil and gas. The results show that the Upper Paleozoic strata with a thickness of 0–9300 m is mainly distributed in the western and northeastern parts of the study area, and was absent in the localities of the western parts. The Upper Paleozoic strata has significant differences in different sections in the study area. The thickness and depth of Upper Jurassic–Lower Cretaceous varies considerably from the north to the south, being thicker and deeper in the north and thinner and shallower in the south. |
| LIU Yan-xu,LAI Yan-ling,CAO An-qi,GAO Shan,WANG Ning,MENG Wei-di,YANG Dong-hong,WANG Li-jie.2023.Airborne Gravity and Magnetic Tectonolayering and New Strata:Exemplified by Nenjiang–Lindian Area of Songliao Basin[J].Acta Geoscientica Sinica,44(3):455-466. |
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