| 碧口地体中元古代构造属性 |
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| 引用本文： | 丁振举,姚书振.碧口地体中元古代构造属性[J].大地构造与成矿学,1998,22(3):219-226. |
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| 作者姓名： | 丁振举 姚书振 |
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| 作者单位： | [1]中国科学院地球化学研究所 [2]中国地质大学 |
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| 摘 要： | 有关中元古界碧口岩群的成岩构造环境及中元古代碧口地体构造属性长期存在争议。本文综合火山岩、硅质岩所反映的构造信息，认为碧口地体中元古代曾发育过裂谷-有限洋盆构造环境，是在扬子陆缘基础上伴随元古代仰展构造作用发展和演化的。
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| 关 键 词： | 大地构造环境 构造属性 中元古代 碧口地体 |
TECTONIC ATTRIBUTE OF THE MIDPROTEROZOIC BIKOU TERRANE |
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| Abstract: | The tectonic setting and attribute of the Bikou Terrane related to the Proterozoic Bikou Group have been disputed. Structure information from volcanic rock and siliceous rock in the Bikou Group is synthesized in this paper. We make conclusion that a rift-limited ocean basin had been developed on the basis of the Yangtze continental margin in the mid-Proterozoic accompanying the extension. In the Bikou terrane existed a limited ocean basin between the Yangtze paleo-continent plate and the Yudongzi micro-continent. |
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| Keywords: | tectonic setting tectonic attribute mid-Proterozoic Bikou Terrane |
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