| 云开前加里东花岗质岩石Sm-Nd、Pb/Pb同位素定年及其意义 |
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| 引用本文：彭松柏,战明国,张业明,邱瑞照,陈富文.2000.云开前加里东花岗质岩石Sm-Nd、Pb/Pb同位素定年及其意义[J].地球学报,21(1):52-57. |
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| 基金项目:国家自然科学基金(青年)项目(编号49502036)，地矿部“九五”重点科技攻关项目(编号95-02-00) |
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| 中文摘要:利用Sm Nd ,Pb/Pb同位素测年方法对云开核部条带-眼球状花岗质岩石进行了年龄测定 ,首次获得Sm Nd全岩 14 14± 68Ma和Pb/Pb全岩 1388± 90Ma的等时线年龄 ,表明云开地区不仅在加里东期发生了造山运动 ,而且在中元古代发生了更为重要的构造 -岩浆造山运动 ,其时代与全球性格林威尔造山旋回可以对比。 |
| 中文关键词:云开地区 前加里东花岗质岩石 Sm-Nd、Pb/Pb同位素定年 |
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| Sm-Nd and Pb/Pb Isotopic Dating of Pre-Caledonian Granitic Rocks in Yunkai Area and its Significance |
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| Abstract:The whole rock banded-augen granitic rock samples form Yankai uplifted area are dated Sm_Nd and Pb/Pb isotopically 1414±68Ma and 1388±90Ma respectively. These data indicate that the orogeny took place not only in Caledonian but also in Late Mesoproterozoic, which secms more important and is correlatable with global Grenville orogeny. |
| keywords:Yunkai area Pre-Caledonian granitic rock Sm-Nd and Pb/Pb isotopic dating |
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