Oxygen isotopes in calcium-aluminum-rich inclusions from enstatite chondrites: new evidence for a single CAI source in the solar nebula

被引：57

作者：

Guan, Y

McKeegan, KD

MacPherson, GJ ^{[1
]}

机构：

[1] Smithsonian Inst, Natl Museum Nat Hist, Dept Mineral Sci, Washington, DC 20560 USA

[2] Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 2000年 / 181卷 / 03期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

oxygen; isotopes; enstatite chondrites; calcium-aluminum inclusions; solar system;

D O I：

10.1016/S0012-821X(00)00218-1

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：

Calcium-aluminum-rich inclusions (CAIs) from enstatite chondrites have large O-16 excesses, similar to CAIs in carbonaceous and ordinary chondrites, and are also similar in morphology, mineralogy and Al-Mg isotopic systematics. These similarities provide new evidence that most CAIs might have formed in a single, restricted nebular locale and were then distributed unevenly throughout the various chondrite accretion regions. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：271 / 277

页数：7

共 27 条

[1]

Clayton R. N., 1985, LUNAR PLANET SCI, VXVI, P142

[2] OXYGEN ISOTOPIC COMPOSITIONS OF ENSTATITE CHONDRITES AND AUBRITES [J].