| 甘肃昌马地区阴沟群火山岩地质特征及构造环境探讨 |
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| 引用本文： | 金霞,黄增保.甘肃昌马地区阴沟群火山岩地质特征及构造环境探讨[J].甘肃地质学报,2004,13(1):46-53. |
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| 作者姓名： | 金霞 黄增保 |
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| 作者单位： | 甘肃省地矿局第四地勘院 甘肃酒泉 735000
(金霞)，甘肃省地质调查院 甘肃兰州 730000(黄增保) |
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| 摘 要： | 通过对北祁连山西段昌马地区阴沟群上岩组火山岩的岩石特征、地球化学特征的研究,认为该套岩石为钙碱性系列为主的岩石,形成的构造背景为岛弧发展阶段,与早奥陶世中祁连—柴达木地块向阿拉善地块俯冲有直接的联系。
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| 关 键 词： | 昌马地区 阴沟群 构造环境 |
DISCUSSION ON THE GEOLOGICAL CHARACTERISTICS AND
ITS TECTONIC SETTING OF VOLCANIC ROCKS OF YINGOU GROUP
IN CHANGMA AREA GANSU |
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| JINXia and HUANG Zeng-bao.DISCUSSION ON THE GEOLOGICAL CHARACTERISTICS AND
ITS TECTONIC SETTING OF VOLCANIC ROCKS OF YINGOU GROUP
IN CHANGMA AREA GANSU[J].Acta Geologica Gansu,2004,13(1):46-53. |
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| Authors: | JINXia and HUANG Zeng-bao |
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| Institution: | 1.No.4 Geology and Mineral Exploration Team,Gansu Provincial Bureau of Geology and Mineral Exploration and Development,Jiuquan 735000,China;2.Geological Survey of Gansu Province,Lanzhou 730000,China) |
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| Abstract: | Based on the studies of petrology, petrochemistry, geochemistry, the authores think that the volcanic rock of Yingou Group was mainly calc-alkiline series composition. The diagenetic setting of volcanic rock was island arc developing stage and was associated with the subduction of middle Qilian-Chaidamu plate beneath the Alashan plate during early Ordovician. |
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| Keywords: | Changma area Yingou Group Tectonic setting |
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