Magmatic evolution, igneous petrogenesis and metallogenetic implications of the Orosirian magmatism at the Tapajós Mineral Province, Amazonian Craton
Magmatic hydrothermal mineral deposits axiomatically frame the hosting pluton and the given tectonic setting in which they are inserted.Unsurprisingly, Precambrian porphyry deposits appear to be different than Phanerozoic examples, as collisional or post-collisional deposits are different than arc-related mineralizing systems.As such, this contribution assesses the tectonic framework and the magmatic evolution of the igneous suites present in south-central Amazonian Craton (Tapajós Mineral Province, TMP), and how these parameters translate into metallogenetic potential for the formation of magmatic-hydrothermal copper, molybdenum and gold deposits.For this purpose we gathered whole-rock geochemistry data from selected TMP copper and gold deposits and present new in situ trace-element and U-Pb analyses in zircon.The host rocks of the selected mineralizing systems belong either to the older magmatic sequence (OMS, 2.00 -1.95 Ga), or to the younger magmatic sequence (YMS, 1.90 -1.86 Ga).Whereas OMS presents characteristics of arc-related rocks, YMS