| 武山蛇绿岩的特征、同位素年代及其地质意义 |
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| 引用本文： | 杨军录, 冯益民, 潘晓平. 武山蛇绿岩的特征、同位素年代及其地质意义[J]. 华北地质, 2001, (2): 98-106. doi: 10.3969/j.issn.1672-4135.2001.02.004 |
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| 作者姓名： | 杨军录 冯益民 潘晓平 |
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| 作者单位： | 西安地质矿产研究所,西安,710054; 西安地质矿产研究所,西安,710054; 西安地质矿产研究所,西安,710054 |
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| 基金项目： | 国土资源部“九五”前沿科技项目 (95 0 112 6 ) |
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| 摘 要： | 武山蛇绿岩位于北秦岭西段、商丹断裂西延之北,岩石组成主要为超基性岩、变质的基性侵入岩、枕状玄武岩及大理岩.变玄武岩的岩石地球化学特征显示为钙碱性玄武岩,形成于大陆裂谷至初始洋盆环境,其Sm-Nd等时线年龄为1 570 Ma,反映原始岩浆形成于中元古代,属大陆地壳演化早期的蛇绿岩.
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| 关 键 词： | 蛇绿岩 地质地球化学 同位素年龄 武山 |
| 文章编号： | 1007-6956(2001)02-0098-09 |
| 修稿时间： | 2001-05-28 |
Characteristics, Isotopic age of Wushan Ophiolite and its Geological Significantce |
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| Characteristics, Isotopic age of Wushan Ophiolite and its Geological Significantce[J]. North China Geology, 2001, (2): 98-106. doi: 10.3969/j.issn.1672-4135.2001.02.004 |
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| Authors: | YANG Jun lu FENG Yi min PAN Xiao ping |
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| Abstract: | Wushan ophiolite is located in the west of North Qinling,north to Shangdan fault. It is comeposed of ultrabic rock , basic dike, metabasalts and marble. Geochemistry Features of metabasalts show it is calc-alkaline , formed at the tectonic settings of continent valley to nascent ocean.Isotopic age of metabasalts is 1 570 Ma, showing original magma formed in Mid-Proterozoic, belonging to the earlier ophiolite belt of continent crust evolution. |
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| Keywords: | ophiolite geochemistry Isotopic age Wushan |
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