| 白银地区火山—沉积岩系岩相学特征 |
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| 引用本文： | 曾俊杰,李注苍,齐建宏,张学奎,柳生祥.白银地区火山—沉积岩系岩相学特征[J].甘肃地质学报,2009(1):12-20. |
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| 作者姓名： | 曾俊杰 李注苍 齐建宏 张学奎 柳生祥 |
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| 作者单位： | 甘肃省地矿局第三地勘院;中国地质大学资源学院; |
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| 基金项目： | 《兰州市》幅1:25万区域地质调查项目成果(项目编号:J6.2.7) |
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| 摘 要： | 白银地区火山—沉积岩系为大陆裂谷火山作用的产物。震旦系火山喷发旋回划分为13个喷发韵律和3个喷发亚旋回,成岩环境为半深海相沉积环境,具古陆壳陆内初始裂谷阶段背景;寒武系火山喷发旋回划分为13个喷发韵律和两个喷发亚旋回,黑茨沟组的成岩环境为半深海相沉积环境,是继震旦纪白银岩群后陆壳进一步拉张裂解的产物,代表了裂谷的发展阶段,香毛山组具海底扩张阶段的大陆边缘裂谷沉积背景。
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| 关 键 词： | 白银地区 火山—沉积岩系 岩相学 成岩环境 |
PETROGRAPHIC CHARACTERISTICS OF VOLCANIC-SEDIMENTARY FRAMEWORK IN BAIYIN AREA |
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| ZENG Jun-jie,LI Zhu-cang,QI Jianhong,ZHANG Xue-kui and LIU Sheng-xiang.PETROGRAPHIC CHARACTERISTICS OF VOLCANIC-SEDIMENTARY FRAMEWORK IN BAIYIN AREA[J].Acta Geologica Gansu,2009(1):12-20. |
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| Authors: | ZENG Jun-jie LI Zhu-cang QI Jianhong ZHANG Xue-kui and LIU Sheng-xiang |
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| Institution: | 1.No.3 Geology and Mineral Exploration Team;Gansu Provincial Bureau of Geology and Mineral Exploration and Development;Lanzhou 730050;China;2.Faculty of Earth Rescources;China University of Geosciences;Wuhan 430074;China |
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| Abstract: | The volcanic-sedimentary rocks in Baiyin area is the product of mainland rift's volcanism.The Sinian volcanic eruption cycle is divided into 13 eruption rhythm and three-eruption cycle,whose diagenetic en-vironment is the semi-deep-sea sediments environment,and is in the initial rift stage background of ancient con-tinental crust;The Cambrian volcanic eruption cycle is divided into 13 eruption of rhythm and two-eruption cy-cle,and the diagenetic environment of Heicigou group is the semi-deep-sea sediments e... |
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| Keywords: | Baiyin area vocanic-sedimentary framework petrography diagenesis environment |
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