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Carbonatite-metasomatism signatures hidden in silicate-metasomatized mantle xenoliths from NE China

文献类型：期刊论文

作者Su, Ben-Xun1; Zhou, Xin-Hua1; Sun, Yang1; Ying, Ji-Feng1; Sakyi, Patrick Asamoah2
刊名GEOLOGICAL JOURNAL
出版日期2018-03-01
卷号53期号:2页码:682-691
关键词Li isotopes lithospheric mantle mantle metasomatism mantle xenoliths
ISSN号0072-1050
DOI10.1002/gj.2920
文献子类Article
英文摘要Lithium isotopes measured in situ in minerals from typical silicate-metasomatized mantle xenoliths from NE China show that olivine has higher Li abundances of 1.2-4.0ppm and higher Li-7 values of -0.12-15.46 parts per thousand than those in orthopyroxene (Li=0.56-3.0ppm; Li-7=-11.84-7.31 parts per thousand) and clinopyroxene (Li=0.21-2.1ppm; Li-7=-9.81-14.75 parts per thousand). The Li distributions between these coexisting minerals show a prominent signature of carbonatite metasomatism. The correlation of Li-7 with Li abundance in orthopyroxene is in accordance with petrological expectation of preferential reaction of orthopyroxene with carbonatite melt. The carbonatite metasomatic agent inferred from the Li isotope systematics is compatible with petrological and geochemical features such as the presence of apatite, appearance of wehrlite, and presence of high-Mg# minerals and low Ti/Eu in clinopyroxene. The complicated Li isotope composition of olivine implies that carbonatite metasomatism occurred after silicate metasomatism. These features indicate that the predominant silicate metasomatism is extensively recorded by petrology, mineralogy, and geochemistry, whereas Li isotope systematics is more sensitive to subordinate carbonatite metasomatism. The metasomatic melts are inferred to be relatively enriched in Li-6 and thus suggests that they were probably derived from a highly dehydrated slab.
WOS关键词LITHIUM ISOTOPE FRACTIONATION ; ULTRAPOTASSIC VOLCANIC-ROCKS ; SPINEL PERIDOTITE XENOLITHS ; NORTHEAST CHINA ; LITHOSPHERIC MANTLE ; ENRICHED MANTLE ; OROGENIC ECLOGITES ; WESTERN VICTORIA ; POTASSIC BASALTS ; CENOZOIC BASALTS
WOS研究方向Geology
语种英语
WOS记录号WOS:000426504300015
出版者WILEY
资助机构National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; 41522203 ; 41522203 ; 41522203 ; 41522203 ; 41173011) ; 41173011) ; 41173011) ; 41173011) ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; 41522203 ; 41522203 ; 41522203 ; 41522203 ; 41173011) ; 41173011) ; 41173011) ; 41173011) ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; 41522203 ; 41522203 ; 41522203 ; 41522203 ; 41173011) ; 41173011) ; 41173011) ; 41173011) ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; National Natural Science Foundation of China(41173045 ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; 41522203 ; 41522203 ; 41522203 ; 41522203 ; 41173011) ; 41173011) ; 41173011) ; 41173011)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82778]  
专题中国科学院地质与地球物理研究所
通讯作者Su, Ben-Xun; Zhou, Xin-Hua
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, POB 9825, Beijing 100029, Peoples R China
2.Univ Ghana, Dept Earth Sci, Legon, Ghana
推荐引用方式
GB/T 7714		 Su, Ben-Xun,Zhou, Xin-Hua,Sun, Yang,et al. Carbonatite-metasomatism signatures hidden in silicate-metasomatized mantle xenoliths from NE China[J]. GEOLOGICAL JOURNAL,2018,53(2):682-691.
APA Su, Ben-Xun,Zhou, Xin-Hua,Sun, Yang,Ying, Ji-Feng,&Sakyi, Patrick Asamoah.(2018).Carbonatite-metasomatism signatures hidden in silicate-metasomatized mantle xenoliths from NE China.GEOLOGICAL JOURNAL,53(2),682-691.
MLA Su, Ben-Xun,et al."Carbonatite-metasomatism signatures hidden in silicate-metasomatized mantle xenoliths from NE China".GEOLOGICAL JOURNAL 53.2(2018):682-691.

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来源：地质与地球物理研究所

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