| 颜耀阳,王汝铮.早元古代滹沱群变玄武岩岩石地球化学及构造环境[J].地质找矿论丛,1996,(3):18-26 |
| 早元古代滹沱群变玄武岩岩石地球化学及构造环境 |
| THE PETRO-GEOCHEMISTRY AND TECTONIC SETTING OF METABASALTS IN THE EARLY PROTEROZOIC HUTUO GROUP |
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| DOI：10.6053/j.issn.1001-1412.1996.3. 003 |
| 中文关键词: 早元古代滹沱群 变质玄武岩 构造环境 岩石地球化学 |
| 英文关键词: |
| 基金项目:国家自然科学基金 |
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| 摘要点击次数: 1066 |
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| 中文摘要: |
| 早元古代滹沱群存在先后两期火山岩,早期青石村组变玄武岩呈灰黑色,致密块状构造,主要岩类为玄武岩,部分为玄武安山岩、玄武粗安岩,具有与火山弧玄武岩相似的成分特点;晚期河边村组变玄武岩呈灰绿色。片理发育,主要岩类为碱玄岩和碧玄岩。具有典型板内玄武岩的成分特点。结合区域地质背景,推断滹沱群变玄武岩喷发于大陆板块内部环境。 |
| 英文摘要: |
| In the early Proterozoic Hutuo Group occur two volcano-deposited rocks.The earlier is metabasalts of Qingshicun Formation in greyish dark colour.It consists of basaltic andesite and small basaltic trachyte andesite with massive structure and the characteristic comoposition of basalt at volcanic archs.The later is the metabasalt of Hebiancun Formation in greyish green colour consisting of alkline basalt and basanite with typical composition of intraplate basalt.And.it is characterized by well-developed schistosity.Therefore,it is infered that the basalt in Hutuo Group were erupted in continent of intraplate backtground. |
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