| 攀西地区重力均衡异常的研究 |
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| 引用本文： | 孟令顺,曾庆益,卢履仁,周辉涛.攀西地区重力均衡异常的研究[J].吉林大学学报(地球科学版),1987(1). |
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| 作者姓名： | 孟令顺 曾庆益 卢履仁 周辉涛 |
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| 作者单位： | 长春地质学院
(孟令顺)，四川物探大队七○七重力队
(曾庆益，卢履仁)，四川物探大队七○七重力队(周辉涛) |
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| 摘 要： | 研究表明,康滇地轴及其东部地区属均衡补偿平衡区,西部属强烈上升的异常区。上升的原动力为板块碰撞的构造力与均衡调整力的综合。
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| 关 键 词： | 重力勘探 均衡重力异常 康滇古陆 大地板块构造 |
ON ISOSTATIC ANOMALIES OF PANZHIHUA-XICHANG REGION,SOURTHWESTERN CHINA |
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| Meng Lingshun Zeng Qingyi Lu Luren Zhou Huitao.ON ISOSTATIC ANOMALIES OF PANZHIHUA-XICHANG REGION,SOURTHWESTERN CHINA[J].Journal of Jilin Unviersity:Earth Science Edition,1987(1). |
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| Authors: | Meng Lingshun Zeng Qingyi Lu Luren Zhou Huitao |
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| Abstract: | Using Airy's and Pratt's isostatic hypotheses, isostatic anomalies were calculated for part of the Pan-Xi Rift zone, and isocorrection line map was drawn. Five major gradient belts were divided and statistically correlated with the earthquake frequencies in each of the respective belts. After considering the depths of the Mohorovicic discontinuity and the deep structural division in this area, four isostatic anomaly areas were divided. It shows that the Xikang-Yunnan land axis and the part to its east are an isostatic equilibrium area and the Western area is a strongly up rising area due to the collision of plates and isostatic adjustment. Using three different methods the depths of Mohorovicic discontinuity along two profiles across Xikang-Yunnan land axis and Longmen Mountain, were calculated which further verified the above interpretation. |
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| Keywords: | gravity survey isostasy gravity anomaly Kangtian old land plate tectonic |
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