| 四川盐边基性-超基性杂岩体岩石学研究 |
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| 作者单位： | Wuhan College of Geology，Wuhan 430074 |
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| 摘 要： | 本文研究了四川盐边基性-超基性杂岩体环状对称分带的特点;根据岩石化学成分及相图分析估算了杂岩体形成时温度、压力、氧逸度、岩浆形成深度及当时地壳厚度;提出了该杂岩体是一个层序不全多次侵入的岛弧蛇绿岩套中一员的新观点。
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| 关 键 词： | 四川省 基性-超基性杂岩体 蛇绿岩 岩石化学 形成环境 |
THE PETROLOGICAL STUDY ON BASIC-ULTRABASIC COMPLEX IN YANBIAN, SICHUAN PROVINCE |
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| Shen Shangyue Zhang Baomin Yuan Yanming. THE PETROLOGICAL STUDY ON BASIC-ULTRABASIC COMPLEX IN YANBIAN, SICHUAN PROVINCE[J]. Earth Science-Journal of China University of Geosciences, 1986, 0(6) |
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| Authors: | Shen Shangyue Zhang Baomin Yuan Yanming |
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| Abstract: | This paper studied the characteristics of the ring-shaped symmetrical zoning of basic-ultrabasic complex in Yanbian, Sichuan province. The temperature, pressure, oxygen fugacity of complex and the depth of magma formation, as well as the thickness of the earth crust at that time, were estimated according to the chemical composition of rocks and the analyses of phase-diagrams. A new point of view was proposed, i.e. the complex under study is one of the members in island arc ophiolite suite, which bears an incomplete sequence with multiple intrusion. |
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| Keywords: | Sichuan province basic-ultrabasic complex ophiolite rock chemistry environments of formation |
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