GRAIN‐SIZE DISTRIBUTION AND MORPHOLOGY OF METAL IN E‐CHONDRITES
作者:
A.J. Easton,
期刊:
Meteoritics
(WILEY Available online 1983)
卷期:
Volume 18,
issue 1
页码: 19-27
ISSN:0026-1114
年代: 1983
DOI:10.1111/j.1945-5100.1983.tb00573.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
The size distribution and morphology of metal grains have been examined in 11 sections of types I and II E‐chondrites. The changes in the grain‐size distribution and morphology of metal grains correspond with the petrologic types and define a series that reflects increase in thermal metamorphism in the following order: type I, Kota Kota‐Indarch‐South Oman‐St. Mark's; and type II, Jajh deh Kot Lalu‐Atlanta‐Daniel's Kuil‐Hvittis‐Pillistfer‐Khairpur‐Blithfield. Concentrations of metal grains adjacent to the perimeters of chondrules are observable throughout the sequence and delineate relic chondritic structure in six of the seven type II E‐chondrites; relic structures are
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