TECTONICS AND CRUSTAL EVOLUTION OF ALTAI IN CHINA AND KAZAKHSTAN
TECTONICS AND CRUSTAL EVOLUTION OF ALTAI IN CHINA AND KAZAKHSTAN
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发表时间：
2001
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通讯作者：
Li Tian-de
中科院分区：
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作者：
Li Tian-de
中国与哈萨克斯坦的阿拉泰位于西伯利亚板块的西南边缘，阿拉泰褶皱系和寨桑-北准噶尔褶皱系在这里交汇。构造单元划分为褶皱区一级单元、褶皱系次级一级单元、与褶皱带、中央隆起带或中央结晶带或简称带大致对应的构造建造带二级单元。三级单元大致对应于反斜、向斜、以上两者的组合和断块。这些简单的东西被称为子带。区内划分出4个构造建造亚带。该地区的构造格架是通过反复伸展和挤压形成的。划分了太古代-元古界古陆壳形成、早古生代被动大陆边缘增生、晚古生代陆壳伸展挤压和中新生代相对稳定发展四个关键阶段。
Altai in China and Kazakhstan is located at the southwestern margin of Siberia plate, where Altai fold system and Zhaisang-North Jungger fold system join together. The tectonic units are divided as follows, the 1st grade units for fold region, the sub-1st grade units for fold system, the 2nd grade units for tectono-formation belt which roughly corresponds with fold belt, central uplift belt or central crystalline belt or simply-called belt. The 3rd grade units roughly correspond with anticlinoria, synclinoria, combination of above two, and faulted blocks. These are simlpy called sub-belts. Four tectono-formation sub-belts are divided in the area. The tectonic framework of the area formed through repeated extensions and compressions. Four key stages are divided, i.e., Archean-Proterozoic formation of paleo-continental crust, Early Paleozoic accretion of passive continental margin, Late Paleozoic extension-compression of continental crust, and Meso-Cenozoic relatively stable development.