Geothermobarometry of igneous rocks from Afonso Cláudio Intrusive Complex (Espírito Santo state, Southeastern Brazil), Arauaí-West Congo Orogen: Further evidence for deep emplacement levels

摘要: Abstract The Afonso Claudio Intrusive Complex (ACIC) is an inversely zoned pluton that intruded the Aracuai-West Congo Orogen (AWCO) during orogenic collapse, which lasted from 530 to 480 Ma. It hosted in orthogneisses of Pre-collisional Supersuite and paragneisses Nova Venecia mostly constituted by two off-centered mafic cores, composed monzogabbro monzodiorite, surrounded quartz monzonite hills. Mingling mixing zones were mapped between these rocks, where jotunite mangerite locally found. In this study, we present a petrographic, mineral chemistry geothermobarometric study concerning most abundant ACIC rocks. These rocks showed emplacement conditions corresponding middle lower crust, are similar crustal levels estimated for its main host addition, enclose many xenoliths, with some them showing melting evidences. evidences suggest one sources felsic magmas, contaminated mantle magmas evolution. Due similarities AWCO post-collisional work concludes plutons crust evolution cooling, contributing also magma sources.