ABSTRACT
Detection of transcrustal geophysical anomalies of unique form and associated with the appearance of intensive magmatism and extremely high heat flow posed a problem as to their magmatic nature. The most appropriate method for investigating the internal structure of these anomalies proved to be the method of seismogravitational modelling in a modernised version. A by-product of seismogravitational modelling of the megastructures of mantle diapirism was the automatic matching of the known Kirovograd and Koresten gravity lows. Autointrusives are detected within mantle plumes, essentially representing the antidromal time sequence of differentiates. Ultrabasic mantle plumes are extremely impoverished in these ingredients and, hence, their addition is hardly possible. The mantle plume was delineated at its basement by remote sensing methods as a large circular structure whose boundaries outline the protoplatform. The world’s richest known sulphide polymetallic deposits of Pechenga and Noril’sk, copper, silver and gold, as well as chromite deposits of Cuba and several others are associated with mantle plumes.
