| 大别山北麓晚侏罗世金刚台组火山岩地质及岩相构造特征 |
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| 引用本文： | 刘文灿,孙善平,李家振.大别山北麓晚侏罗世金刚台组火山岩地质及岩相构造特征[J].现代地质,1997(2). |
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| 作者姓名： | 刘文灿 孙善平 李家振 |
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| 作者单位： | China University of Geosciences，Beijing，100083 |
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| 基金项目： | 1：5万苏仙石幅、金寨县幅区调项目 |
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| 摘 要： | 金刚台组火山岩分布在大别山北缘金寨与商城之间，为一套以爆发相为主体的中酸性钙碱性火山岩系，时代属晚侏罗世。根据喷发韵律、岩石组合、角砾成分和蚀变矿化等特征，可分为早、晚两个亚旋回。通过火山岩相和火山构造研究表明，火山活动以中心式喷发为特征，属复式火山机构类型，就其形态特点来看属于锥状火山和破火山口
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| 关 键 词： | 大别山北麓 金刚台组 火山地质 火山机构 |
VOLCANIC GEOLOGY AND FACIES TECTONICS OF LATE JURASSIC JINGANGTAI FORMATION AT NORTHERN FOOT OF DABIE MOUNTAINS |
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| Liu Wencan\ \ Sun Shanping\ \ Li Jiazhen.VOLCANIC GEOLOGY AND FACIES TECTONICS OF LATE JURASSIC JINGANGTAI FORMATION AT NORTHERN FOOT OF DABIE MOUNTAINS[J].Geoscience——Journal of Graduate School,China University of Geosciences,1997(2). |
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| Authors: | Liu Wencan\ \ Sun Shanping\ \ Li Jiazhen |
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| Abstract: | The Jingangtai Formation distributed in Jinzhai Shangcheng area of the northern foot of Dabie mountains is a suite of intermediate acidity calc alkaline volcanic rocks, which mainly consists of eruptive facies and belongs to the Late Jurassic. It can be divided into early and late subcycles based on volcanic eruptive rhythm, rock association, composition of breccia and alteration metallization feature. The study of volcanic facies and tectonics shows that the volcanic activity is charactered by eruption of central type, its volcanic apparatus is composite volcano consisting of conical volcanoes and caderas. |
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| Keywords: | the northern foot of Dabie mountains Jingangtai Formation volcanic geology volcanic apparatus |
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