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

doi:10.1002/gj.2920

	Carbonatite-metasomatism signatures hidden in silicate-metasomatized mantle xenoliths from NE China
	Su, Ben-Xun 1; Zhou, Xin-Hua 1; Sun, Yang 1; Ying, Ji-Feng 1; Sakyi, Patrick Asamoah 2
刊名	GEOLOGICAL JOURNAL
	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
DOI	10.1002/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
出版者	WILEY
WOS记录号	WOS:000426504300015
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)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82776]
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.