| 新疆北部壳体大地构造演化与运动初步研究 |
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| 引用本文： | 杨牧,彭省临,杨斌,刘亮明.新疆北部壳体大地构造演化与运动初步研究[J].大地构造与成矿学,2005,29(1):113-121. |
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| 作者姓名： | 杨牧 彭省临 杨斌 刘亮明 |
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| 作者单位： | 中南大学地洼学说成矿学研究所,湖南,长沙,410083;中国科学院广州地球化学研究所与南海海洋研究所边缘海地质重点实验室,广东,广州,510640;中南大学地洼学说成矿学研究所,湖南,长沙,410083 |
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| 基金项目： | 国家重点基础研究发展计划(课题编号: 2001CB409809)资助. |
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| 摘 要： | 位于亚洲大陆中腹的新疆北部地区,是由不同壳块组成的复合型大陆壳块区,经历了长期复杂的壳体运动-演化历程,造就了该区不同地段岩石圈结构和构造的差异。本文在前人研究的基础上,运用壳体大地构造学的研究思路和方法,通过对该区地质-地球物理特征和壳体结构的分析,将该区划分为 4个不同性质和地壳结构的壳块,其中天山地区又可进一步分为东、西两段。文章分析了区域壳体的运动 -演化特征,并初步认为东、西天山在深部地球物理特征、基底性质和前地台期的构造演化,可能分属不同的构造演化体制。中新生代全区先后经历了地台演化阶段之后,陆续发生活化作用,由于不同地段地壳和岩石圈结构的差异,形成浅部地壳不同的活化地质构造特征。
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| 关 键 词： | 壳体 运动-演化 活化作用 新疆北部 |
| 文章编号： | 1001-1552(2005)01-0113-09 |
| 修稿时间： | 2004年2月23日 |
CRUSTOBODY'S MOVEMENT AND EVOLUTION IN NORTHERN XINJIANG |
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| YANG Mu.CRUSTOBODY'S MOVEMENT AND EVOLUTION IN NORTHERN XINJIANG[J].Geotectonica et Metallogenia,2005,29(1):113-121. |
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| Authors: | YANG Mu |
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| Abstract: | Northern Xinjiang, which is located in the hinterland of the Central Asia continent, is a compound continental crustoblock composed of crustoblocks of different origins. The long-term and complicated movement-evolution courses of this region resulted in the diversity of lithospheric structures and constructions. On the basis of previous researches and analysis of regional geological and geophysical data, and by applying crustobody theory and related research methods, this region can be divided into 4 diversiform crustoblocks. Furthermore, the Tianshan region should be subdivided into the eastern and western sections. After recapitulating the characteristics of movement and evolution of this region, it is suggested that the two sections, i.e., the eastern and western Tianshan, may belong to different geotectonic systems, which is demonstrated by evident differences in geophysics, basement and geotectonic evolution of pre-platform periods. In Meso-Cenozoic, after going through the platform period, the whole region successively underwent activation. The diversity of crustal and lithospheric structures and constructions of different zones brought up the different activated geological and structural characteristics. |
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| Keywords: | crustobody geotectonics movement and evolution activation northern Xinjiang |
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