详细信息
- 责任者：Miao Bingkui (Key Laboratory of Geological Engineering Center of Guangxi Province ; Guilin University of Technology ; Guilin 541004 ; China) ; Lin Yangting
- 刊名：Acta Petrologica Sinica
- 出版年：2010
- 卷期：26(12)
- 关键词：冲击变质作用 ; shock metamorphism ; 球粒陨石 ; chondrites ; 南极洲 ; Antarctica
- 页码：p.3579-3588
- 图表：5 illus., 2 tables, 56 refs.
- 分类号：0100
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Grove Mountains（GRV） 052382 is a new highly shocked ureilite found in Grove Mountains,East Antarctica. It is composed mainly of olivine（75%）, pigeonite（5%）, carbonaceous interstitial（20%） and a little of metal. Olivine is subidiomorphic equigranular texture with the size of 10~20 μm, and there is pyroxene melt among them. The petrological characteristics suggest that GRV 052382 has a typical ureilitic texture and is a monomict ureilite. On the basis of the composition of olivine, GRV 052382 is furthurly classed into the FeO subtype. Therefore, GRV 052382 is likely a heavily shocked ureilite, which will probably provide some direct evidence of shock history of ureilites and further to get insight on the history of shock events experienced by the ureilite parent body by the later detail study.