| 构造动力体制与复合造山作用——兼论三江复合造山带时空演化 |
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| 引用本文： | 邓军,葛良胜,杨立强.构造动力体制与复合造山作用——兼论三江复合造山带时空演化[J].岩石学报,2013,29(4):1099-1114. |
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| 作者姓名： | 邓军 葛良胜 杨立强 |
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| 作者单位： | 1. 中国地质大学地质过程与矿产资源国家重点实验室,北京,100083
2. 武警黄金地质研究所,廊坊,065000 |
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| 基金项目： | 本文受国家重点基础规划研究项目(2009CB421008);北京市优秀博士学位论文指导教师科技项目(20111141501);教育部长江学者和创新团队(IRT0755)和111计划(B07011)联合资助. |
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| 摘 要： | 构造动力体制是研究区域大地构造演化和成矿地质环境的基础,而造山带作为全球金属矿产资源集中产出的地带,同时保留了地球地质构造演化最为丰富的记录,因而是用来解剖不同构造动力体制及相关成矿环境和成矿作用的主要对象.板块构造源于大洋,描述和解释的是以水平运动为主导的板块构造导致的大陆边缘增生和大洋板块消失及与其相关的地质现象,其动力学体制称为大洋动力体制；大陆构造描述和解释的主要是大陆内部而不是边缘发生的以垂直运动(壳幔相互作用)为主导的的大陆物质增生和消失及其相关的地质现象,其动力学体制称为大陆动力体制；而洋陆转换则是水平和垂直运动相互耦合、共同作用的动力学体制,描述和解释的是洋陆转换及其相关的地质现象,可以将其称为转换动力体制.不同构造动力体制在全球范围内具有同区转承和异区并存特点.每一种构造动力体制都可以激发造山作用,因此,地球上同时存在着不同类型的造山作用和造山带,可以归结为俯冲造山(带)、碰撞造山(带)、伸展造山(带)和陆内造山(带)等完整反映造山带演化过程的4种类型.复合造山概念科学地描述了全球不同造山带的复杂性.它具有三种涵义,一是不同时期相同或不同类型造山带在空间上的复合(叠置)；二是同一造山带在不同地质历史阶段、不同构造动力体制下造山作用的时间复合(叠加)；三是同时具有时空复合特征的复合造山带.对三江造山带时空结构的解析表明,它是具有时空复合特征的巨型复合造山带的典型代表.
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| 关 键 词： | 构造动力体制 造山带 复合造山 三江 |
| 收稿时间： | 2012/11/1 0:00:00 |
| 修稿时间： | 2013/1/16 0:00:00 |
Tectonic dynamic system and compound orogeny: Additionally discussing the temporal-spatial evolution of Sanjiang orogeny, Southwest China |
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| DENG Jun,GE LiangSheng and YANG LiQiang.Tectonic dynamic system and compound orogeny: Additionally discussing the temporal-spatial evolution of Sanjiang orogeny, Southwest China[J].Acta Petrologica Sinica,2013,29(4):1099-1114. |
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| Authors: | DENG Jun GE LiangSheng and YANG LiQiang |
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| Institution: | State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China;Gold Geological Institute of CAPF, Langfang 065000, China;State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China |
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| Abstract: | The tectonic dynamic system is the base of studying on regional geotectonic evolution and metallogenetic geological environment. As one of the most concentrated regions of the global metal mineral resources and with the best abundant records of the geological tectonic evolution, orogenic belts are the primary objects of studing and explaining different tectonic dynamic system and corresponding metallogenitic environment and mineralization. The plate tectonic derived from the oceans, and it depicts and explains accretion of the continental edge and disappearing of the oceanic plates and corresponding geological phenomena, which are leaded by the plates tectonic mainly in horizontal action, and the geodynamic system named oceanic dynamic system; The continental tectonic depicts and explains the continental substantial accretion and disappearing and corresponding geological phenomena, which mainly happened in intracontinents and not in continental edge and mainly in vertical actions (the crust and the mantle acts each other), and the dynamic system named continental dynamic system; That the transition of from the ocean to the continent is dynamic system of coupling each other and co-action, which mainly moves in vertical active and horizontal action, and it depicts and explains the ocean switched to the continent and corresponding geological phenomena, and it named transitional dynamic systems. On the earth, different tectonic dynamic systems have the features of succeeding conversion in the same areas and coexist in different areas. Each tectonic dynamic systems can produce orogenics, therefore, at the same time there are all kinds of orogeny and orogenic belts on the earth, which can summarized four types of subduction orogeny (or orogenic belts), collision orogeny (or orogenic belts), extensional orogeny (or orogenic belts) and intracontinental orogeny (or orogenic belts) that completely reflect the orogenetic belts evolution processes. The concepts of compoud orogenics scientific explain the complexity of the global orogenetic belts, and it has three means: The first is the like and unlike orogenetic belts compound (or overlaps) in space in different phases, and the second is orogenitic times compound (or stack) of the same orogenetic belts in different geological historical periods and different tectonic dynamic systems, and the third is at the same time with the natures of temporal-spatial compound orogenetic belts.Studing on Sanjian orogeny shows it is a typical compound orogenetic belts with complex temporal-spatial configuration. |
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| Keywords: | Tectonic dynamic system Orogeny Compound Sanjiang orogeny |
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