The isotopic compositions of lead were determined on the samples of whole rock, chondrule, olivine, pyroxene and troilite from Bo County chondrite ( class LL4) of Anhui prov., China. 本文报道了安徽亳县LL4型球粒陨石的全岩、球粒、橄榄石、辉石和陨硫铁的铅同位素比值,以及上述部分样品的铀、钍、铅的含量。
The difference between the chondrule and the matrix indicates that aqueous alteration in the chondrule may be occurred in the nebula, but the aqueous alteration occurring widely in the matrix may be occurred in the parent process. 球粒与基质的含水蚀变差异说明,球粒中的含水蚀变可能发生在星云阶段,而基质的广泛含水蚀变则主要发生在母体过程中。