| 试论地壳深部物质的侧向迁移——以松辽盆地、下辽河洼陷及其两侧的隆起区为例 |
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| 引用本文： | 王振中.试论地壳深部物质的侧向迁移——以松辽盆地、下辽河洼陷及其两侧的隆起区为例[J].地球科学与环境学报,1987(2). |
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| 作者姓名： | 王振中 |
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| 作者单位： | 吉林省地质科学研究所 |
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| 摘 要： | 地壳深部物质侧向迁移的过程,是洼陷区地壳内的低能量、低密度的物质不断被地幔高能量、高密度的物质所替换、取代和驱逐的过程,是地壳物质不断增加的过程。本文以松辽盆地、下辽河洼陷及其两侧的隆起区为例,讨论了地壳演化过程中的深部物质侧向迁移的地质作用及效应。
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| 关 键 词： | 地壳 侧向迁移 隆起 洼陷 中生代 松辽盆地 燕山 |
ON THE LATERAL MIGRATION OF MATERIALS IN THE DEEP OF THE CONTINENTAL CRUST -A Case Study in the Songliao Basin, Lower Liaohe Depression, and Adjacent Areas |
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| Wang Zhenzhong.ON THE LATERAL MIGRATION OF MATERIALS IN THE DEEP OF THE CONTINENTAL CRUST -A Case Study in the Songliao Basin, Lower Liaohe Depression, and Adjacent Areas[J].Journal of Earth Sciences and Environment,1987(2). |
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| Authors: | Wang Zhenzhong |
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| Institution: | Jilin Institute of Geology |
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| Abstract: | Since Merozoic, the Daxiangapling-Yanshan and the Changbaishan-Qianshan areas have uplifted intermittently more than 400om, and the Songliao Basin and the Lower Liaohe Depression have subsided more than 9000m.The MD under uplifted areas settled down 2~6km, whereas that under subsided areas rose about 5 km.This shows that the crust in the uplifted areas had been thickened, and that in the subsided areas had been thinned.At the same lime,the magmatie activities were widespread in the uplifted areas which indicates that the male-rials derived from lower crust were added to these areas. ln summary, the lateral migration of materials in the deep of the crust is an important process in which the materials of low energy and density of the crust arc continuously substituted and drived out by the materials of high energy and density of the mantle. |
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| Keywords: | Songliao Lower Liaohc lateral migration crust mantle |
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