NAOC Open IR  > 月球与深空探测研究部
Classification of 24 new ordinary chondrites from the Grove Mountains, Antarctica
Lu, R; Miao, BK; Wang, G; Dai, DQ; Lin, YT; Ouyang, ZY; Li, CL
AbstractPetrography and mineral chemistry of 24 ordinary chondrites from the Grove Mountains, Antarctica, have been studied in order to identify their chemical-petrographic types. These samples were selected from a total of 4448 Grove Mountains (GRV) meteorites collected during the 19th Chinese Antarctic Research Expedition so as to make an estimation of the large GRV meteorite collection. The chemical-petrographic types of these meteorites are presented below: 1 H3, 2 H4, 4 H5, 2 H6, 1 L4, 7 L5, 5 L6, 1 LL4 and 1 LL6. The new data weaken the previous report that unequilibrated ordinary chondrites are unusually abundant in the Grove Mountains region. However, this work confirms significant differences in distribution patterns of chemical-petrographic types between the Grove Mountains and other regions in Antarctica. Many of these meteorites show significant terrestrial weathering, probably due to a high abundance ratio of meteorites found in moraines to those on blue ice. Nine meteorites experienced severe shock metamorphism, as evidenced by undulose extinction and intense fracturing of silicates and presence of shock-induced melt veins and pockets. These heavily shocked meteorites provided us with natural samples for the study of high-pressure polymorphs of minerals.
KeywordAntarctica Meteorite Ordinary Chondrite Classification Shock Metamorphism Thermal Metamorphism
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WOS IDWOS:000226387300005
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Geochem, Guiyang 550002, Guizhou, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100090, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Lu, R,Miao, BK,Wang, G,et al. Classification of 24 new ordinary chondrites from the Grove Mountains, Antarctica[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2004,78(5):1052-1059.
APA Lu, R.,Miao, BK.,Wang, G.,Dai, DQ.,Lin, YT.,...&Li, CL.(2004).Classification of 24 new ordinary chondrites from the Grove Mountains, Antarctica.ACTA GEOLOGICA SINICA-ENGLISH EDITION,78(5),1052-1059.
MLA Lu, R,et al."Classification of 24 new ordinary chondrites from the Grove Mountains, Antarctica".ACTA GEOLOGICA SINICA-ENGLISH EDITION 78.5(2004):1052-1059.
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