Further immobile element data from altered volcanic rocks, Timmins mining area, Ontario

The relatively immobile trace elements TiO2, Zr, and Y prove useful for determining the original identity of, and for correlating, metamorphosed and metasomatized Archean volcanic rocks. More than 95% of 366 samples from the Timmins area were found to correspond to the lithostratigraphic units determined independently from structural and stratigraphic decisions based on lithology and top determinations. Trace-element data can be used for distinguishing volcanic units and as an aid in correlation regardless of any petrogenetic interpretations.