Elevated magma fluxes deliver high-Cu magmas to the upper crust
Abstract
Porphyry Cu-Au ore deposits are globally associated with convergent margins. However, controls on the processing and distribution of the chalcophile elements (e.g., Cu) during convergent margin magmatism remain disputed. Here, we show that magmas feeding many Chilean stratovolcanoes fractionate sulfides with a high-Cu/Ag ratio early in their crustal evolution. These magmas show evidence of lower-crustal garnet and amphibole crystallization, and...
Paper Details
Title
Elevated magma fluxes deliver high-Cu magmas to the upper crust
Published Date
Jun 10, 2020
Journal
Volume
48
Issue
10
Pages
957 - 960
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