中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Oxygen isotope compositions of eclogites in Rongcheng, Eastern China

文献类型:期刊论文

作者Chu, XL; Guo, JH; Fan, HG; Jin, CW
刊名CHINESE SCIENCE BULLETIN
出版日期2003-02-01
卷号48期号:4页码:372-378
关键词Sulu UHP terrain eclogite oxygen isotope formation temperature overprinted metamorphism
ISSN号1001-6538
文献子类Article
英文摘要Collected from the Rongeheng region, Shandong Province, the three types of eclogites suffering the UHP (i.e. ultra-high pressure) metamorphism have obviously different oxygen isotope compositions. The eclogites occurring in regional orthogneisses and ultramafic rocks have the oxygen isotope compositions of normal eclogites in the world, but the eclogites existing in marbles are extremely enriched in O-18. By applying oxygen isotope geothermometry, for the all types of eclogites, the temperature estimates of quartz-garnet pair, in principle, indicate the formation temperatures of eclogites, so that the peak-metamorphic temperatures are estimated to be averagely little higher than 800degreesC, which are consistent with the estimates by using other geothermometers according to cation partitioning between coexisting phases. The delta(18)O values of eclogitic inclusions hosted in marbles from Yangguantun, Rongcheng region, are far higher than the values of eclogites (including eclogitic inclusions in marbles) from the Dabieshan and other places of the Sulu. The oxygen isotope compositions of various minerals indicate that the formation temperatures of eclogites from the Rongcheng region, in general, are higher than that from the Dabieshan and the southwestern part of the Sulu, but the dispersive temperatures estimated by different mineral pairs probably reflect that the UHP eclogites; from the Rongcheng region generally suffered overprinted metamorphisms during the exhumation.
WOS关键词PRESSURE METAMORPHIC ROCKS ; SU-LU TERRANE ; SHANDONG PROVINCE ; COESITE ECLOGITE ; JIANGSU PROVINCE ; ULTRAMAFIC ROCKS ; DABIE MOUNTAINS ; LOW DELTA-O-18 ; FRACTIONATION ; GRANULITE
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000181441800015
出版者SCIENCE CHINA PRESS
源URL[http://ir.iggcas.ac.cn/handle/132A11/78305]  
专题中国科学院地质与地球物理研究所
通讯作者Chu, XL
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Key Lab Mineral Resources Res, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714
Chu, XL,Guo, JH,Fan, HG,et al. Oxygen isotope compositions of eclogites in Rongcheng, Eastern China[J]. CHINESE SCIENCE BULLETIN,2003,48(4):372-378.
APA Chu, XL,Guo, JH,Fan, HG,&Jin, CW.(2003).Oxygen isotope compositions of eclogites in Rongcheng, Eastern China.CHINESE SCIENCE BULLETIN,48(4),372-378.
MLA Chu, XL,et al."Oxygen isotope compositions of eclogites in Rongcheng, Eastern China".CHINESE SCIENCE BULLETIN 48.4(2003):372-378.

入库方式: OAI收割

来源:地质与地球物理研究所

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