| 鄂拉山查查香卡地区晚三叠世火山岩产出环境分析 |
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| 引用本文： | 芦文泉,童海奎,仓索南尖措,马永胜.鄂拉山查查香卡地区晚三叠世火山岩产出环境分析[J].西北地质,2012,45(1):48-55. |
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| 作者姓名： | 芦文泉 童海奎 仓索南尖措 马永胜 |
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| 作者单位： | 1. 青海省国土资源勘查项目管理中心,青海西宁,810001
2. 青海省第四地质矿产勘查院,青海西宁,810001 |
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| 基金项目： | 中国地质调查局地质大调查项目“青海省地质找矿工作跟踪研究”（121201140119） |
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| 摘 要： | 通过对查查香卡地区晚三叠世火山岩岩石学研究,确定该套火山岩属晚三叠世鄂拉山组,属钙碱性系列。喷出时的大地构造环境为陆内造山环境,该火山岩最初可能形成于大陆边缘环境,由于A型俯冲构造活动,测区乃至鄂拉山地区产生一系列右旋走滑断裂带,受北西向右旋走滑断裂的影响,岩石孔隙加大,并出现强烈的热流活动,导致岩浆沿这些断裂带喷出地表。
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| 关 键 词： | 岩石学 陆内造山 构造环境 东昆仑晚三叠世火山岩带 查查香卡 |
Analysis of Environment for Late Triassic Volcanic Rocks in Chachaxiangka, Elashan |
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| LU Wen-quan
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TONG Hai-kui
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CANG Suo-nanjiancuo
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MA Yong-sheng.Analysis of Environment for Late Triassic Volcanic Rocks in Chachaxiangka, Elashan[J].Northwestern Geology,2012,45(1):48-55. |
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| Authors: | LU Wen-quan TONG Hai-kui CANG Suo-nanjiancuo MA Yong-sheng |
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| Institution: | Center for Land Resources Exploration Projict Management in Qinghai Provinec, Xining 810001, China Quaternary Geology and Mineralresources Exploration in Qinghai Province, Xining 810001, China |
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| Abstract: | Through study on Petrology of the Late Triassic volcanic rocks from Chachaxiangka area, the volcanic rocks belong to Elashan Formation and are calc- alkaline series. Considering the tectonic setting of intra-continental orogenic environment, the Late Triassic volcanic rocks initially may form in the continen- tal marginal environment. Researched area and even Elashan area produced a series of right rotary sliding fault zone because ＂A＂ type subduction. Affected by northwestern Right-lateral strike slip fault zone, rock pore increased and strongly heat flow activities appears coursing magma spray out surface along these fault zone. |
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| Keywords: | petrology intra-continental orogenic tectonic environments Late Triassic volcanic belt ofEastern Kunlun mountains ~ Chachaxiangka |
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