Stable associations of magmatic rocks (problems of isolation and classification)

Abstract

Study and systematization of magmatic rocks combinations (volcanic series, magmatic complexes, formations, associations) is one of the paramount tasks in petrology. The decision of this task opens opportunities for detection of some new petrological regularities. The distinguishing of magmatic associations which steadily recur in space (elementary or stable associations) allowed to show the existing in the Nature some petrological groups of such associations. These groups differ between themselves by petrochemical trends.