| 河南舞阳地区前寒武纪变质岩系中锆石特征及其对恢复原岩的应用 |
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| 引用本文： | 李达周.河南舞阳地区前寒武纪变质岩系中锆石特征及其对恢复原岩的应用[J].地质科学,1980,15(3):242-248. |
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| 作者姓名： | 李达周 |
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| 摘 要： | 恢复变质岩原岩的性质是研究变质岩的重要课题。恢复变质岩原岩性质的方法很多,目前普遍采用的是岩石化学法和地球化学法。由于岩石的化学成分变化很大,有些沉积岩的成分与火成岩的成分很相似,变质产物也很相似,特别是那些经过非等化学的深变质的岩石,有的本来是副变质岩,却投影在正变质岩的区域内,或落在模稜两可的地区。目前,有人利用岩石中物理化学性质稳定的锆石区分正副变质岩。
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CHARACTERISTIC PATTERNS OF ZIRCONS IN THE PRECAMB-RIAN METAMORPHIC ROCKS FROM THE WUYANG DISTRICT, HENAN PROVINCE, AND THEIR APPLI-CATION IN RECONSTRUCTING THE ORIGINAL ROCKS |
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| Li Dazhou.CHARACTERISTIC PATTERNS OF ZIRCONS IN THE PRECAMB-RIAN METAMORPHIC ROCKS FROM THE WUYANG DISTRICT, HENAN PROVINCE, AND THEIR APPLI-CATION IN RECONSTRUCTING THE ORIGINAL ROCKS[J].Chinese Journal of Geology,1980,15(3):242-248. |
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| Authors: | Li Dazhou |
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| Abstract: | Zircons collected in Precambrian metamorphic rocks from Wuyang district, Henan province, were studied and their characteristic patterns are used to reconstruct the original rocks of metamorphic rocks under investigation. Thus the results obtained are satisfactory, especially in such fields as the differentiation between the amphibolites and plagioclase amphibolites metamorphosed from igneous rocks and that from sedimentary rocks. Based upon the characteristic patterns of zircons a lithological classification of the original rocks is suggested for the Precambrian metamorphic rocks. |
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