Titlebook: Archaean Geochemistry; The Origin and Evolu A. Kr?ner,G. N. Hanson,A. M. Goodwin Conference proceedings 1984 Springer-Verlag Berlin Heidelb

相符

Multi-Dimensional Preference Models,dimentary data. Systematic variations of trace element patterns (e.g. REE, La/Sc, Co/Th) in Archaean sedimentary rocks provide persuasive evidence for a dominant origin from the common Archaean bimodal mafic-felsic igneous suite. On average, a 1:1 mix is indicated for the Archaean upper crust. Such