SILICON IN CARBONACEOUS CHONDRITE METAL - RELIC OF HIGH-TEMPERATURE CONDENSATION

被引：34

作者：

GROSSMAN, L

OLSEN, E

LATTIMER, JM

机构：

[1] UNIV ILLINOIS,DEPT ASTRON,URBANA,IL 61801

[2] UNIV CHICAGO,ENRICO FERMI INST,CHICAGO,IL 60637

[3] FIELD MUSEUM NAT HIST,DEPT GEOL,CHICAGO,IL 60605

来源：

SCIENCE | 1979年 / 206卷 / 4417期

关键词：

D O I：

10.1126/science.206.4417.449

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Electron microprobe analyses of an extraordinarily large metal grain from the Murchison type 2 carbonaceous chondrite gave 0.24 mole percent silicon. Thermodynamic calculations show that this is a natural consequence of condensation of alloys from the solar nebular gas at a total pressure 10 -5≲Ptot<10-3 atmosphere, provided they failed to equilibrate with it after cooling to < 1200 kelvins. Copyright © 1979 AAAS.

引用

页码：449 / 451

页数：3

共 19 条

[11]

Normanton A. S., 1976, Metal Science, V10, P207

[12] ORIGIN OF ISOLATED OLIVINE GRAINS IN TYPE-2 CARBONACEOUS CHONDRITES [J].