Metal grains in stony meteorites are relatively movable during thermal netamorphism(Wood,1967;Xie and Wang,1979;Xie,1986).In view of the fact that the Jilin met
Based on their REE features, stratoid or lenticular amphibolites in the Dabie Complex are di-vided into two types:one is characterized by flat REE distribution
There are two main types of iron deposits in the Middle-Lower Yangtze Valley district.Both of them underwent post-magmatic hydrothermal processes during ore for
Power spectral analysis is discussed and an exmple of its application to a geochemical stratigraphic profile is presented.In the Dachang area,all major elements