地质学报（英文版）2004，Vol.78Issue(5)：1042-1051,10.
Ca-, Al-rich Inclusions in Three New Carbonaceous Chondrites from the Grove Mountains, Antarctica:New Evidence for a Similar Origin of the Objects in Various Groups of Chondrites
Ca-, Al-rich Inclusions in Three New Carbonaceous Chondrites from the Grove Mountains, Antarctica:New Evidence for a Similar Origin of the Objects in Various Groups of Chondrites
摘要
Abstract
Three new carbonaceous chondrites (GRV 020025, 021579 and 022459) collected from the Grove Mountains(GRV), Antarctica, have been classified as the CM2, CO3 and CV3 chondrites, respectively. A total of 27 Ca- and Al-rich inclusions have been found in the three meteorites, which are the earliest assemblages formed in the solar nebula. Most of the inclusions are intensively altered, with abundant phyllosilicates in the inclusions from GRV 020025 and FeO enrichment of spinel in those from GRV 022459. Except for one spinel-spherule in each of GRV 020025 and 021579, all the inclusions can be classified as Type A-like or spinel-pyroxene-rich inclusions, and they probably represent the continuum of solar nebular condensation. In addition, most of the inclusions in these meteorites share much similarity in both petrography and mineral chemistry, suggesting a similar origin of Ca-Al-rich inclusions in various chondrites.关键词
Antarctica/meteorite/carbonaceous chondrite/Ca-Al-rich inclusion/CAI/nebulaKey words
Antarctica/meteorite/carbonaceous chondrite/Ca-Al-rich inclusion/CAI/nebula引用本文复制引用
DAI Deqiu,LIN Yangting,MIAO Bingkui,SHENG Wenjie,WANG Daode..Ca-, Al-rich Inclusions in Three New Carbonaceous Chondrites from the Grove Mountains, Antarctica:New Evidence for a Similar Origin of the Objects in Various Groups of Chondrites[J].地质学报（英文版）,2004,78(5):1042-1051,10.基金项目
The samples were supplied by the China Polar Research Center. This work was supported by the pilot project of knowledge-innovation of Chinese Academy of Sciences(Grant No: KZCX3-SW-123) and the National Natural Science Foundation of China (Grant No. 40025 （Grant No: KZCX3-SW-123）
