| 新疆鄯善县阿奇山一带火山岩特征及构造意义 |
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| 引用本文： | 李彦林,杨志军,毛归来.新疆鄯善县阿奇山一带火山岩特征及构造意义[J].陕西地质,2010,28(1):46-51. |
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| 作者姓名： | 李彦林 杨志军 毛归来 |
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| 作者单位： | 1. 陕西省地矿局汉中地质大队,汉中,723000
2. 陕西省地质调查院,西安,710054 |
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| 摘 要： | 东天山的板块汇聚一造山运动时间置于泥盆末一早石炭世，或置于晚石炭世，或置于早二叠世是长期争议的问题。近年来，通过新疆鄯善阿奇山一带1：5万区域矿产地质调查项目工作，对东天山造山带南部的早中石炭世中一中酸性火山岩系、火山韵律及岩石化学分析研究，认为该套火山岩属较典型的岛弧火山岩组合，表明早中石炭世是天山洋盆重要的汇聚阶段。
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| 关 键 词： | 新疆 东天山造山带 雅满苏组 岛弧火山岩 |
VOLCANIC ROCKS AND STRUCTURES IN AQISHAN AREA OF SHANSHAN COUNTY,XINJIANG |
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| Li Yan-lin,Yang Zhi-jun,Mao Gui-lai.VOLCANIC ROCKS AND STRUCTURES IN AQISHAN AREA OF SHANSHAN COUNTY,XINJIANG[J].Geology of Shaanxi,2010,28(1):46-51. |
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| Authors: | Li Yan-lin Yang Zhi-jun Mao Gui-lai |
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| Institution: | Li Yan-lin1,Yang Zhi-jun2,Mao Gui-lai2(1.Hanzhong Geological Team,Shaanxi Bureau of Geology and Mineral Resources,Hanzhong 723000,2.Shaanxi Geological Survey,Xi'an 710054) |
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| Abstract: | It has been a long-term argument question that the plates merge of the East Tians- han--orogenetic movements occurred in the end of the Devonian-Early Carboniferous Epoch, or the Late Carboniferous Epoch or the Early Permian Epoch. Recent researches of earlymiddle Carboniferous moderate-acid volcanic rocks, volcanic rhythms and lithochemistry at the south of the East Tianshan orogenetic zone, which were undertaken during the geological mapping at a scale of 1. 50. 000 in Aqishan area of Shanshan county in Xinjiang, suggested that the set of volcanic rocks to be attributed in typical assemblage of island-arc volcanic rocks, indicating that the period of the Early-middle Carboniferous Epoch should be the significant age for the emerges of the Tianshan oceanic basins. |
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| Keywords: | Xinjiang East Tianshan orgenetic zone Yamansu Formation island-arc volcanics |
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