Continental‐Margin Structure of Northeast China and its Adjacent Areas
Continental‐Margin Structure of Northeast China and its Adjacent Areas
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DOI：
10.1111/j.1755-6724.1995.mp8003002.x
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发表时间：
2009-05
影响因子：
3.3
通讯作者：
Tang Kedong;W. Ying;He Guoqi;Shao Jian
中科院分区：
文献类型：
--
作者：
Tang Kedong;W. Ying;He Guoqi;Shao Jian
东北大陆边缘及其邻区由两条构造带组成。内带是由古陆分裂形成的碎片拼贴而成，北部与古亚洲洋的演化有关，南部与古太平洋的演化有关。外带为中生代地体，是由晚古生代至早中生代洋壳碎片和晚中生代海沟堆积组成的混杂岩。在古亚洲洋闭合至现代太平洋打开或泥盆纪至侏罗纪时期，存在着另一个海洋——古太平洋，古太平洋的海底扩张导致了上述构造带的形成。晚侏罗世以后走滑断裂体系的发育和晚白垩世至早第三纪陆表火山-深成岩带的形成是现代太平洋板块与欧亚板块相互作用的结果。
The continental margin of Northeast China and its adjacent areas is composed of two tectonic belts. The inner belt is a collage made up of fragments resulting from breakup of an old land with the north part related to the evolution of the Palaeo-Asian Ocean and the south part to the evolution of the Palaeo-Pacific Ocean. The outer belt is a Mesozoic terrane, which is a melange made up of fragments of the Late Palaeozoic to Early Mesozoic oceanic crust and the Late Mesozoic trench accumulations. There existed another ocean—the Palaeo-Pacific Ocean during the period from the closing of the Palaeo-Asian Ocean to the opening of the modern Pacific Ocean or from the Devonian to Jurassic, and the ocean-floor spreading of the Palaeo-Pacific Ocean led to the formation of the above-mentioned tectonic belts. The development of the strike-slip fault system after the Late Jurassic and the formation of an epicontinental volcano-plutonic rock belt in the Late Cretaceous to Early Tertiary are attributed to the interaction between the modern Pacific plate and the Eurasian plate.