| 中国大陆科学钻探CCSD-PP3钻孔地幔岩的尖晶石相部分熔融证据 |
| |
| 引用本文： | 陈世忠[,] 杨经绥 张仲明.中国大陆科学钻探CCSD-PP3钻孔地幔岩的尖晶石相部分熔融证据[J].岩石学报,2006,22(11):2815-2824. |
| |
| 作者姓名： | 陈世忠[ ] 杨经绥 张仲明 |
| |
| 作者单位： | 1. 中国地质科学院地质研究所,北京,100037;中国地调局南京地质矿产研究所,南京,210016
2. 中国地质科学院地质研究所,北京,100037 |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金;中国博士后科学基金 |
| |
| 摘 要： | CCSD PP3超镁铁岩表现为高 Mg 和 Cr,低 Ca 和 Al 特征,是中国东部和超高压变质带上极其罕见的亏损地幔岩,通过地球化学和矿物学和 Re-Os 同位素研究发现岩石来自古元古代岩石圈地幔,并在地幔浅部尖晶石相条件下发生部分熔融,最近一次部分熔融作用发生在中-晚元古代,后经岩石圈厚度加大、拆沉或深俯冲过程,岩石转变为石榴石橄榄岩。
|
| 关 键 词： | 石榴橄榄岩 尖晶石相 部分熔融 |
| 文章编号： | 1000-0569/2006/022(11)-2815-24 |
| 收稿时间： | 05 10 2006 12:00AM |
| 修稿时间： | 09 17 2006 12:00AM |
Evidence of spinel fades partial melting of the mantle rocks from the CCSD-PP3 drilling cores |
| |
| CHEN ShiZhong,YANG JingSui,ZHANG ZhongMing.Evidence of spinel fades partial melting of the mantle rocks from the CCSD-PP3 drilling cores[J].Acta Petrologica Sinica,2006,22(11):2815-2824. |
| |
| Authors: | CHEN ShiZhong YANG JingSui ZHANG ZhongMing |
| |
| Institution: | 1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China; 2. Nanjing Institute of Geology and Mineral Resources, China Geological Survey, Nanjing 210016, China |
| |
| Abstract: | The mantle rocks from the CCSD PP3 drilling cores in the Sulu UHPM belt are characterized by high contents of Mg and low A1 and Ca,suggesting a much highly depleted mantle rocks than those in the east of China.Geochemical,mineralogical and Re-Os isotope data indicate that the mantle rocks in PP3 were originated from early Proterozoic lithospheric mantle and partial melted at shallow depth under spinel facies during medium-late Proterozoic time.The spinel facies peridotites were transformed into garnet facies peridotites,due to the deep subduction during the collision between the Yangtze and the North China blocks. |
| |
| Keywords: | Garnet peridotites Spinel facies Partial melting |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩石学报》浏览原始摘要信息 |
| 点击此处可从《岩石学报》下载免费的PDF全文 |
