| 重、磁、电联合反演在银额盆地定量解释中的应用 |
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| 引用本文： | 刘建利,李西周,张泉.重、磁、电联合反演在银额盆地定量解释中的应用[J].物探与化探,2013(5):853-858. |
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| 作者姓名： | 刘建利 李西周 张泉 |
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| 作者单位： | 1. 中国地质大学 地球科学与资源学院，北京 100083; 陕西省地质矿产勘查开发局物化探队，陕西 西安 710043
2. 陕西省地质矿产勘查开发局物化探队,陕西 西安,710043 |
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| 摘 要： | 依据大地电磁测深连续二维反演结果初步确定构造与地层，通过综合分析区内物性特征给定地层与岩石的物性参数，建立正演地质一地球物理初始模型，在地质、钻井、地震资料约束下进行重、磁、电联合反演，不断修改地质一地球物理模型和大地电磁测深连续二维反演结果，使重、磁正演数据和实测数据拟合度达到最佳。在银额盆地构造与地层解释中的应用结果表明，重、磁、电联合反演可以有效克服单方法解释的多解性，准确识别地质层位，大大提高定量解释的精度。
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| 关 键 词： | 重 磁 电联合反演 银额盆地 构造与地层 定量解释 |
THE APPLICATION OF GRAVITY-MAGNETIC-MAGNETOTELLURIC JOINT INVERSION TO THE QUANTITATIVE INTERPRETATION OF YIN'E BASIN |
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| LIU Jian-li
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LI Xi-zhou
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ZHANG Quan.THE APPLICATION OF GRAVITY-MAGNETIC-MAGNETOTELLURIC JOINT INVERSION TO THE QUANTITATIVE INTERPRETATION OF YIN'E BASIN[J].Geophysical and Geochemical Exploration,2013(5):853-858. |
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| Authors: | LIU Jian-li LI Xi-zhou ZHANG Quan |
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| Institution: | 2 ( I. School of Earth Sciences and Resources, China University of Geoscienees, Beijing 100083, China; 2. Geological and Geochemical Exploration Party, Shaanxi Bureua of Geology and Mineral Exploration, Xi＇an 710043, China) |
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| Abstract: | According to the results of 2-D resistivity inversion of magnetotelluric sounding, geological structures and strata were prelimi- narily confirmed. By synthetic analysis of petrophysical characteristics, the authors established the petrophysical parameters of strata and rocks in the study area, established the initial model of geology-geophysics, carried out gravity-magnetic-magnetotelluric joint in- version under the restraint of geological, well log and seismic data, and constantly revised the model of geology-geophysics and the re- suits of 2-D resistivity inversion of magnetotelluric sounding, to make the gravity-magnetic measurement data fit in with the theoretical calculations. The results of interpretation of geological structures and strata in Yin~ basin show that the gravity-magnetic-magnetotelluric joint inversion can effectively overcome the multi-resolution of the single one, mor~ correctly identify strata, and greatly improve the ac- curacy of quantitative interpretation. |
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| Keywords: | gravity-magnetic-magnetotelluric joint inversion Yin'e basin geological structure and strata quantitative interpretation |
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