THE TRACE-ELEMENT VARIATIONS IN CLINOPYROXENES FROM SPINEL PERIDOTITE XENOLITHS FROM SOUTHWEST POLAND

被引：44
作者：
BLUSZTAJN, J
SHIMIZU, N
机构：
[1] Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole
来源：
CHEMICAL GEOLOGY | 1994年 / 111卷 / 1-4期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0009-2541(94)90091-4
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Major- and trace-element content, and Sr- and Nd-isotopic composition are reported for clinopyroxenes from anhydrous spinel peridotites (SW Poland). LREE enrichment which occurs in ah samples is decoupled from relatively high Nd-143/Nd-144 ratios (0.51286-0.51291), indicating that mantle metasomatism took place relatively recently. REE and HFSE (high-field strength element) abundances show marked variation but, interestingly, correlate with each other: samples with U-shaped REE patterns have Ti/Zr> 700; samples with a REE concave-downward pattern have Ti/Zr of 20-200 and samples with a REE concave-upward pattern are characterized by Ti/Zr of 2-40. We suggest that trace-element enrichment is the result of interaction between basaltic melt migrating through the veins and contiguous wall-rock peridotites. Modal composition and trace-element characteristics of samples with U-shaped REE patterns probably reflect interaction of depleted peridotite residue with carbonatite melt.
引用
收藏
页码：227 / 243
页数：17
相关论文
共 50 条
[1]   SOLAR-SYSTEM ABUNDANCES OF THE ELEMENTS [J].
ANDERS, E ;
EBIHARA, M .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1982, 46 (11) :2363-2380
[2]   SR, ND, PB ISOTOPIC CHARACTER OF TERTIARY BASALTS FROM SOUTHWEST POLAND [J].
BLUSZTAJN, J ;
HART, SR .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1989, 53 (10) :2689-2696
[3]  
BLUSZTAJN J, 1992, INT GEOL C, V2, P517
[4]   MECHANISMS OF MANTLE METASOMATISM - GEOCHEMICAL EVIDENCE FROM THE LHERZ OROGENIC PERIDOTITE [J].
BODINIER, JL ;
VASSEUR, G ;
VERNIERES, J ;
DUPUY, C ;
FABRIES, J .
JOURNAL OF PETROLOGY, 1990, 31 (03) :597-628
[5]   PARTITIONING OF TRACE-ELEMENTS BETWEEN CARBONATE MELT AND CLINOPYROXENE AND OLIVINE AT MANTLE P-T CONDITIONS [J].
BRENAN, JM ;
WATSON, EB .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1991, 55 (08) :2203-2214
[6]   EVIDENCE OF MANTLE METASOMATISM AND HETEROGENEITY FROM PERIDOTITE INCLUSIONS OF NORTHEASTERN BRAZIL AND PARAGUAY [J].
COMINCHIARAMONTI, P ;
DEMARCHI, G ;
GIRARDI, VAV ;
PRINCIVALLE, F ;
SINIGOI, S .
EARTH AND PLANETARY SCIENCE LETTERS, 1986, 77 (02) :203-217
[7]   TEXTURAL, ISOTOPIC AND REE VARIATIONS IN SPINEL PERIDOTITE XENOLITHS, MASSIF-CENTRAL, FRANCE [J].
DOWNES, H ;
DUPUY, C .
EARTH AND PLANETARY SCIENCE LETTERS, 1987, 82 (1-2) :121-135
[8]  
Dupuy C., 1986, Journal of African Earth Sciences, V5, P209, DOI 10.1016/0899-5362(86)90012-6
[9]  
Eggler DH, 1987, MANTLE METASOMATISM, P21
[10]   MINERALOGY, GEOCHEMISTRY AND ORIGIN OF ILHERZOLITE INCLUSIONS IN VICTORIAN BASANITES [J].
FREY, FA ;
GREEN, DH .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1974, 38 (07) :1023-1059
12345