Granitization of the Basic Volcanic Rocks in the Contact Aureole of the Gabbronorite Intrusion (Ganal Ridge, Kamchatka)

摘要

Granulite-like metamorphic rocks found by Tikhomirov in 1956 in the Ganal Ridge of Kamchatka [1] opened a long discussion on their origin and facies affiliation. Most researchers ascribed these rocks to the ancient complex of the sialic basement of East Kamchatka [2, 3], while others suggested their contact-reaction formation [4-6]. Therefore, establishment of the nature of the granulite-like rocks is of importance for understanding not only their genesis and facies affiliation, but also the origin of the crystalline basement of all East Kamchatka.