The concentrations of radiogenic Ar^40 and cosmogenic Ar^32 in Anlung chondrite have been measured by the isotopic dilution technique. A ultrahigh-vacuum system have been designed for extracting and purifying the gase...The concentrations of radiogenic Ar^40 and cosmogenic Ar^32 in Anlung chondrite have been measured by the isotopic dilution technique. A ultrahigh-vacuum system have been designed for extracting and purifying the gases in the sample. These data provide a K^40-Ar^40 age of 3.28 b.y. and an exposure age of 3.0 m,y. for this chondrite.Based on these results, we have discussed the origin and the former environment of stone meteorite.展开更多
文摘The concentrations of radiogenic Ar^40 and cosmogenic Ar^32 in Anlung chondrite have been measured by the isotopic dilution technique. A ultrahigh-vacuum system have been designed for extracting and purifying the gases in the sample. These data provide a K^40-Ar^40 age of 3.28 b.y. and an exposure age of 3.0 m,y. for this chondrite.Based on these results, we have discussed the origin and the former environment of stone meteorite.
