Evidence for K-rich terranes on Vesta from impact spherules

被引：35

作者：

Barrat, J. A. ^{[1
]}

Bohn, M. ^{[1
]}

Gillet, Ph ^{[2
]}

Yamaguchi, A. ^{[3
]}

机构：

[1] UBO IUEM, CNRS, UMR Domaines Ocean 6538, F-29280 Plouzane, France

[2] Univ Lyon, Ecole Normale Super Lyon, CNRS, Lab Sci Terre,UMR 5570, F-69364 Lyon 7, France

[3] Natl Inst Polar Res, Antarctic Meteorite Res Ctr, Itabashi Ku, Tokyo 1738515, Japan

来源：

METEORITICS & PLANETARY SCIENCE | 2009年 / 44卷 / 03期

关键词：

DAWN MISSION; SOLAR-SYSTEM; GEOCHEMISTRY; DIOGENITES; METEORITES; MINERALOGY; CHEMISTRY; PETROLOGY; MELTS; GLASS;

D O I：

10.1111/j.1945-5100.2009.tb00738.x

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：

The howardite-eucrite-diogenite (HED) clan is a group of meteorites that probably originate from the asteroid Vesta. Some of them are complex breccias that contain impact glasses whose compositions mirror that of their source regions. Some K-rich impact glasses (up to 2 wt% K(2)O) suggest that in addition to basalts and ultramafic cumulates, K-rich rocks are exposed on Vesta's surface. One K-rich glass (up to 6 wt% K(2)O), with a felsic composition, provides the first evidence of highly differentiated K-rich rocks on a large asteroid. They can be compared to the rare lunar granites and suggest that magmas generated in a large asteroid are more diverse than previously thought.

引用

页码：359 / 374

页数：16

共 52 条

[1]

[Anonymous], P LUNAR SCI C

[2] FORMATION OF APOLLO-15 GREEN GLASS-BEADS [J].

ARNDT, J ;

VONENGELHARDT, W ;

GONZALEZCABEZA, I ;

MEIER, B .

JOURNAL OF GEOPHYSICAL RESEARCH, 1984, 89 :C225-C232

[3] The Stannern trend eucrites: Contamination of main group eucritic magmas by crustal partial melts [J].

Barrat, J. A. ;

Yamaguchi, A. ;

Greenwood, R. C. ;

Bohn, M. ;

Cotten, J. ;

Benoit, M. ;

Franchi, I. A. .

GEOCHIMICA ET COSMOCHIMICA ACTA, 2007, 71 (16) :4108-4124

[4] Geochemistry of diogenites: Still more diversity in their parental melts [J].

Barrat, J. A. ;

Yamaguchi, A. ;

Greenwood, R. C. ;

Benoit, M. ;

Cotten, J. ;

Bohn, A. ;

Franchi, I. A. .

METEORITICS & PLANETARY SCIENCE, 2008, 43 (11) :1759-1775

[5] Petrology and geochemistry of the unbrecciated achondrite Northwest Africa 1240 (NWA 1240):: An HED parent body impact melt [J].

Barrat, JA ;

Jambon, A ;

Bohn, A ;

Blichert-Toft, J ;

Sautter, V ;

Göpel, C ;

Gillet, P ;

Boudouma, O ;

Keller, F .

GEOCHIMICA ET COSMOCHIMICA ACTA, 2003, 67 (20) :3959-3970

[6] Heterogeneous agglutinitic glass and the fusion of the finest fraction (F3) model [J].

Basu, A ;

Wentworth, SJ ;

McKay, DS .

METEORITICS & PLANETARY SCIENCE, 2002, 37 (12) :1835-1842

[7] MINERALOGY, CHEMISTRY, AND NOBLE-GAS CONTENTS OF ADZHI-BOGDO - AN LL3-6 CHONDRITIC BRECCIA WITH L-CHONDRITIC AND GRANITOIDAL CLASTS [J].

BISCHOFF, A ;

GEIGER, T ;

PALME, H ;

SPETTEL, B ;

SCHULTZ, L ;

SCHERER, P ;

SCHLUTER, J ;

LKHAMSUREN, J .

METEORITICS, 1993, 28 (04) :570-578

[8]

Boesenberg JS, 2007, METEORIT PLANET SCI, V42, pA20

[9] The south African polymict eucrite Macibini [J].

Buchanan, PC ;

Lindstrom, DJ ;

Mittlefehldt, DW ;

Koeberl, C ;

Reimold, WU .

METEORITICS & PLANETARY SCIENCE, 2000, 35 (06) :1321-1331

[10]

DELANEY JS, 1982, METEORITICS, V17, P204

← 1 2 3 4 5 6 →