INSPIRATION FROM STUDY OF ANTARCTIC METEORITES I: PETROGRAPHIC AND COMPOSITIONAL EVIDENCES FOR EARLY CONTINUOUS CHEMICAL FRACTIONATION OF THE SOLAR NEBULA

极地研究 ›› 1992, Vol. 3 ›› Issue (1-English): 1-16.

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INSPIRATION FROM STUDY OF ANTARCTIC METEORITES I: PETROGRAPHIC AND COMPOSITIONAL EVIDENCES FOR EARLY CONTINUOUS CHEMICAL FRACTIONATION OF THE SOLAR NEBULA

Wang Daode and Lin Yangting

Institute of Geochemistry, Guangzhou Branch, Academia Sinica, Guangzhou 510640

出版日期:1942-03-30 发布日期:1942-03-30
通讯作者: Wang Daode
基金资助:
Supported by State Antarctic Committee and Chinese Academy of Sciences.

INSPIRATION FROM STUDY OF ANTARCTIC METEORITES I:PETROGRAPHIC AND COMPOSITIONAL EVIDENCES FOR EARLY CONTINUOUS CHEMICAL FRACTIONATION OF THE SOLAR NEBULA

Wang Daode and Lin Yangting

Institute of Geochemistry, Guangzhou Branch, Academia Sinica, Guangzhou 510640

Online:1942-03-30 Published:1942-03-30
Contact: Wang Daode
Supported by:
Supported by State Antarctic Committee and Chinese Academy of Sciences.

摘要/Abstract

摘要：

Bulk concentrations of Ir, Os, Co and other siderophile elements of metal phase in chondrites increase significantly with degree of oxidation, which together with Co-content of kamacite and Fa-content of olivine, reveal a continuous variation of redox in chondrites. Intermediate groups of E/H, H/L, L/LL, and LL/C, lying between E and H, H and L, L and LL, LL and C, respectively, were proposed based on Co content in kamacite, Fa value of olivine, Fs value of low-Ca pyroxene, bulk concentrations of Ir, Os and Co of metal phase and other taxonomic parameters. The discovery of intermediate groups increases the number of chemical groups of chondrites from 9 to 13. Both variation of redox in chondrites and presence of the intermediate groups of chondrites suggest a continuous chemical fractionation in the primordial solar nebula.

关键词: chondrite, classification, solar nebula

Abstract:

Bulk concentrations of Ir, Os, Co and other siderophile elements of metal phase in chondrites increase significantly with degree of oxidation, which together with Co - content of kamacite and Fa - content of olivine, reveal a continuous variation of redox in chondrites. Intermediate groups of E/H, H/L , L/LL, and LL/C, lying between E and H , H and L, L and LL , LL and C, respectively, were proposed based on Co content in kamacite, Fa value of olivine, Fs value of low - Ca pyroxene, bulk concentrations of Ir, Os and Co of metal phase and other taxonomic parameters. The discovery of intermediate groups increases the number of chemical groups of chondrites from 9 to 13. Both variation of redox in chondrites and presence of the intermediate groups of chondrites suggest a continuous chemical fractionation in the primordial solar nebula.

Key words: chondrite, classification, solar nebula

Wang Daode, Lin Yangting. INSPIRATION FROM STUDY OF ANTARCTIC METEORITES I: PETROGRAPHIC AND COMPOSITIONAL EVIDENCES FOR EARLY CONTINUOUS CHEMICAL FRACTIONATION OF THE SOLAR NEBULA[J]. 极地研究, 1992, 3(1-English): 1-16.

Wang Daode, Lin Yangting. INSPIRATION FROM STUDY OF ANTARCTIC METEORITES I:PETROGRAPHIC AND COMPOSITIONAL EVIDENCES FOR EARLY CONTINUOUS CHEMICAL FRACTIONATION OF THE SOLAR NEBULA[J]. ADVANCES IN POLAR SCIENCE, 1992, 3(1-English): 1-16.

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INSPIRATION FROM STUDY OF ANTARCTIC METEORITES I: PETROGRAPHIC AND COMPOSITIONAL EVIDENCES FOR EARLY CONTINUOUS CHEMICAL FRACTIONATION OF THE SOLAR NEBULA

INSPIRATION FROM STUDY OF ANTARCTIC METEORITES I:PETROGRAPHIC AND COMPOSITIONAL EVIDENCES FOR EARLY CONTINUOUS CHEMICAL FRACTIONATION OF THE SOLAR NEBULA

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