| 太古代变质玄武岩的地球化学特征及大地构造意义 |
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| 引用本文： | 翟明国. 太古代变质玄武岩的地球化学特征及大地构造意义[J]. 地质科学, 1991, 0(3): 222-230 |
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| 作者姓名： | 翟明国 |
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| 作者单位： | 中国科学院地质研究所 |
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| 摘 要： | 本文把太古代变质玄武岩分成绿岩带变质玄武岩和高级区变质玄武岩。在地球化学上,这两类玄武岩分别与岛弧-弧后盆地玄武岩和大洋中脊-弧后盆地玄武岩相似。推测它们形成的大地构造环境与现代岛弧-弧后盆地和大洋中脊-弧后盆地有一定相似之处,尽管太古代放射生热比现代高2—4倍。
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| 关 键 词： | 太古代 变质玄武岩 地球化学 岩石成因 大地构造 |
| 收稿时间： | 1988-12-01 |
| 修稿时间： | 1988-12-01; |
TWO TYPES OF ARCHAEAN META-BASALTS AND THEIR GEOTECTONIC SIGNIFICANCE |
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| Zhai Mingguo. TWO TYPES OF ARCHAEAN META-BASALTS AND THEIR GEOTECTONIC SIGNIFICANCE[J]. Chinese Journal of Geology, 1991, 0(3): 222-230 |
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| Authors: | Zhai Mingguo |
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| Affiliation: | Imiituit af Geology, Academia Sinica, Beijing, 100029 |
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| Abstract: | The Archaean meta-basalts are distinguished into two meta-basalts formed in the greenstone belt and in the high-grade metamorphic region. These two types of meta-basalts are geo-chemically similar to those on the island arc-back basin and those between the mid-ocean ridge and arc-back basin respectively. It is possible that the Archaean meta-basalts erupted in the geological settings which are different in form but not in essence from the recent geological setting, although radiogenic heat is in the Archaean is 2-4 times higher than in the present |
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| Keywords: | Archaean basalts geochemistry geotectonic setting |
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