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滇西北点苍山蛇绿混杂岩的发现及意义

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沙绍礼 尹光侯 敖德恩 段国玺. 滇西北点苍山蛇绿混杂岩的发现及意义[J]. 中国地质, 2002, (1): 44-47.
引用本文: 沙绍礼 尹光侯 敖德恩 段国玺. 滇西北点苍山蛇绿混杂岩的发现及意义[J]. 中国地质, 2002, (1): 44-47.
shu
SHA Shao-li, YIN Guang-hou, AO De'en, DUAN Guo-xi. Discovery and significance of ophiolitic melanges at Diancang Mountain in northwestern Yunnan[J]. Geology in China, 2002, (1): 44-47.
Citation: SHA Shao-li, YIN Guang-hou, AO De'en, DUAN Guo-xi. Discovery and significance of ophiolitic melanges at Diancang Mountain in northwestern Yunnan[J]. Geology in China, 2002, (1): 44-47.
shu

滇西北点苍山蛇绿混杂岩的发现及意义

  • 云南省地质矿产勘查开发局第三地质大队,云南 大理 671000

Discovery and significance of ophiolitic melanges at Diancang Mountain in northwestern Yunnan

  • No. 3 Geological Survey Party, Yunnan Bureau of Geology and Mineral Exploration and Development, Dali 671000, Yunnan, China

    摘要
  • 提要：点苍山西坡李子坪村分布有较多橄榄岩，围岩是一套中浅变质岩系，其中有斜长角闪岩、变质钠长花岗岩。这些岩石的岩相学、岩石化学及地球化学均显示蛇绿混杂岩特征，暗示点苍山西坡有古特提斯洋壳的残片存在。
    Abstract: A lot of peridotites are distributed at Liziping Village on the western slope of Diancang Mountain. Their country rocks are a medium? Juan and low? Juan Grade Metamorphic Series, consisting of amphibolite and metamorphosed albite granite. The petrography, petrochemistry and geochemistry of these rocks all indicate the features of ophiolitic melanges, suggesting the existence of relict fragments of the Paleo? Juan tethys Oceanic Crust on the western slope of Diancang Mountain.
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刊出日期:  2002-02-24

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