Journal article

Petrogenesis of a Neoproterozoic magmatic arc hosting porphyry Cu-Au mineralization at Jebel Ohier in the Gebeit Terrane, NE Sudan

FP Bierlein, N Reynolds, D Arne, C Bargmann, S McKeag, W Bullen, H Al-Athbah, S McKnight, R Maas

Ore Geology Reviews | ELSEVIER | Published : 2016

Abstract

The ca. 730 Ma porphyry Cu-Au deposit at Jebel Ohier in the Red Sea Hills of northeastern Sudan represents a rare example of a preserved Neoproterozoic magmatic-hydrothermal system which bears many similarities to major mineral-hosting (‘productive’) Tertiary–Cenozoic porphyries in circum-Pacific metallogenic belts. Petrographic, lithogeochemical and Sm-Nd isotope systematics confirm that the deposit formed in a supra-subduction setting and during the constructional stage of an evolving intra-oceanic magmatic arc. The calc-alkaline melts were sourced predominantly from juvenile reservoirs and received comparatively little input from continental-character material. Comparison with igneous roc..

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University of Melbourne Researchers