Phanerozoic Tectonic Evolution, Metallogenesis and Formation of Mineral Systems in China

IF 3.5 3区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
Xuanhua CHEN, Lele HAN, Weicui DING, Shenglin XU, Ying TONG, Yiping ZHANG, Bing LI, Qi ZHOU, Ye WANG
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引用次数: 0

Abstract

The continental Asia is mainly composed of three major tectonic regimes, the Tethys, Paleo Asian Ocean, and West Pacific. It underwent multi-stage plate convergences, ocean-continent transformations, and subductions, collisions and/or collages, and post collisional (orogenic) extensions in Phanerozoic. Tectonic evolution of the Asia brings up a unique fault system and tectonic geomorphological features in the mainland China. Also, it provides a geodynamic background for the formation and evolution of metallogeneses and mineral systems, resulting in nonuniform distribution of tectono-metallogenic systems and metallogenic belts. The spatiotemporal distribution of mineral deposits in China and adjacent areas exhibits periodic variation under controlling of the full life Wilson cycle and tectonic evolution, forming the plate convergence-related mineral system in East Asia. Porphyry Cu deposits are mainly related to compressional systems in Paleozoic and early Mesozoic, and more closely related to post-collision extensional settings in late Mesozoic and Cenozoic. Orogenic Au deposits mainly formed in post-orogeny extensional setting. Alkaline rock related rare earth element deposits formed mainly at margins of the North China and Yangtze cratons. Granite-pegmatite Li and other rare metal deposits formed mainly in early Mesozoic, related to Indosinian post-orogeny extension. Tectono-metallogenic systems provide important basis for the prospecting of mineral resources.

中国新生代构造演化、成矿作用和矿物系统的形成
亚洲大陆主要由特提斯、古亚洲洋和西太平洋三大构造体系组成。在新生代,亚洲大陆经历了多阶段的板块汇聚、海洋-大陆转换、俯冲、碰撞和/或碰撞,以及碰撞后(造山运动)的延伸。亚洲构造演化展现了中国大陆独特的断层系统和构造地貌特征。同时,它也为成矿和成矿系统的形成和演化提供了地球动力学背景,导致构造成矿系统和成矿带的不均匀分布。在威尔逊全生命周期和构造演化的控制下,中国及邻近地区的矿床时空分布呈现周期性变化,形成了东亚板块汇聚成矿系统。斑岩型铜矿床主要与古生代和中生代早期的压缩性体系有关,与中生代晚期和新生代的碰撞后延伸性环境关系更为密切。造山运动的金矿床主要形成于后造山运动的伸展环境中。与碱性岩有关的稀土元素矿床主要形成于华北和扬子地壳的边缘。花岗岩-伟晶岩锂及其他稀有金属矿床主要形成于中生代早期,与印支期后成因延伸有关。构造成矿系统为矿产资源勘探提供了重要依据。
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来源期刊
Acta Geologica Sinica ‐ English Edition
Acta Geologica Sinica ‐ English Edition 地学-地球科学综合
CiteScore
3.00
自引率
12.10%
发文量
3039
审稿时长
6 months
期刊介绍: Acta Geologica Sinica mainly reports the latest and most important achievements in the theoretical and basic research in geological sciences, together with new technologies, in China. Papers published involve various aspects of research concerning geosciences and related disciplines, such as stratigraphy, palaeontology, origin and history of the Earth, structural geology, tectonics, mineralogy, petrology, geochemistry, geophysics, geology of mineral deposits, hydrogeology, engineering geology, environmental geology, regional geology and new theories and technologies of geological exploration.
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