Adakites, High-Nb Basalts and Copper–Gold Deposits in Magmatic Arcs and Collisional Orogens: An Overview

• Published in: Geosciences
• Main Authors: Pavel Kepezhinskas, Nikolai Berdnikov, Nikita Kepezhinskas, Natalia Konovalova
• Format: Text
• Language: English
• Published: Multidisciplinary Digital Publishing Institute 2022
• Subjects: metal-rich adakite magmas; slab melting; lower crustal melting; high-Nb basalts; adakite–mantle interaction; Cu–Au deposits; Stanovoy suture; Cu–Ag–Au alloys; H 2 O–S–Cl fluids; Stanovoy; Kamchatka
• Online Access: https://doi.org/10.3390/geosciences12010029

Adakites are Y- and Yb-depleted, SiO2- and Sr-enriched rocks with elevated Sr/Y and La/Yb ratios originally thought to represent partial melts of subducted metabasalt, based on their association with the subduction of young (<25 Ma) and hot oceanic crust. Later, adakites were found in arc segment...