| 俄远东、中国东北的构造特点及岩石圈深部的不均一性 |
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| 引用本文： | 赵春荆,何国琦,段瑞焱.俄远东、中国东北的构造特点及岩石圈深部的不均一性[J].国土资源,1995(4). |
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| 作者姓名： | 赵春荆 何国琦 段瑞焱 |
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| 作者单位： | 地矿部沈阳地质矿产研究所，北京大学 |
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| 摘 要： | 俄罗斯远东和中国东北前新生代可划分为８个大地构造单元。区域地质、深部地质、地球物理及新构造研究表明，地壳和地幔深部的不均一性反映了该区主要构造单元的深部构成和大地动力学等方面的特点。地热和地磁资料表明，远东地区软流层顶部具有起伏形态的特点，最大深度２００～２５０ｋｍ，浅部仅１００～１４０ｋｍ，松辽盆地７５～１００ｋｍ；在中国东北及亚太过渡带上地幔低速层厚度在０～１００ｋｍ之间变化，计算数据表明，本区地壳厚度为３０～４４ｋｍ，变化幅度为１４ｋｍ。
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| 关 键 词： | 中国东北，俄罗斯远东，深部构造，大地动力学，构造单元 |
FEATURES OF TECTONICS AND INHOMOGENEITY OF DEEP LITHOSPHEKE IN FAR EAST RUSSIAN AND NORTHEAST CHINA |
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| A. A. Vrublevskij F. S.Onukhov F. G. Korchagin I.K. Tuezov E. L. ReinliB.FEATURES OF TECTONICS AND INHOMOGENEITY OF DEEP LITHOSPHEKE IN FAR EAST RUSSIAN AND NORTHEAST CHINA[J].Land & Resources,1995(4). |
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| Authors: | A A Vrublevskij F SOnukhov F G Korchagin IK Tuezov E L ReinliB |
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| Abstract: | There are 8 geotectonic elements in Pre-Cenozoic in FE Russian and NEC China. Studies on regional geology,deep geology,geophysics and neotectonics indicate that the inhomogene-ity of the deep crust and mantle shows the components in depth of the major tectonic ele-ments and the characteristics on some aspects such as geodynamics in these ares. Data ongeotherm and geomagnetism indicate that the top of rheosphere is rolling in shape with themaximum depth of 200-250km, the minimum depth of 75-100km in Songliao basin,and therelatively shallower depth of only 100-140km. The thickness of low-velocity layer in upper-mantal underneath NE China and the belt of transition from Asia to Pacific vary in the rangeof 0-100km and the thickness of the crust in the area is about 30-44km with the changingrange of 14km. |
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| Keywords: | NE China FE Russian Deep tectonic Geodynamics Tectonic element |
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