The role of magma mixing and mafic recharge in the evolution of a back-arc quaternary caldera: The case of Payún Matrú, Western Argentina

Gabbroic enclave in intermediate ignimbrites: The youngest eruptive event in the northern Luzon Arc-Taiwan region

“…Mafic enclaves commonly occur in the volcanic sequences or coexist within the plutonic rocks, and although rare, could have occurred with the ignimbrite sequence (Elburg 1996;Barbey et al 2005;Bardelli et al 2020). In arc-related volcanic rocks, the mafic enclaves are incorporated into the subsequent magma from the earlier stages of magmatism, such as the intrusive bodies or the cumulates in magma chamber/reservoir (Bacon 1986;Clynne 1999;Coombs et al 2003;Browne et al 2006;Martin et al 2006;Morgavi et al 2013;Hernando et al 2016;Plail et al 2018). In the NLA, the mafic enclaves may have been trapped from two ways of magmatism.…”

“…In arc-related volcanic rocks, studying the mafic enclaves helps reveal the mechanism of interaction between different magmas in the magma chamber (Bacon 1986;Clynne 1999;Coombs et al 2003;Browne et al 2006;Martin et al 2006;Morgavi et al 2013;Hernando et al 2016;Plail et al 2018). The geochemical compositions and dating results of the mafic enclaves can provide information on the occurrences of syn-eruptive events and co-magmatic plutonic enclaves (Eichelberger 1980;Bacon 1986;Cole et al 2001;Couch et al 2001;Martin et al 2006;Hernando et al 2016;Plail et al 2018).…”