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The role of structurally controlled fluid flow during epithermal ore-shoot formation is addressed through a structural study of the high grade Martha Mine epithermal deposit (Deseado Massif, Patagonia, Argentina). Martha is a silver-rich deposit, characterised by a complex mineralogy dominated by Ag–As–Sb sulphosalts and Cu–Pb–Zn sulphides. Mineralised veins can be subdivided into two groups: master...
The Deseado Massif is a 60000km 2 geological region located in southern Argentinean Patagonia. The most important geological feature of this area is an extensive plateau characterized by complex and long-lived Middle to Upper Jurassic volcanism, composed of intermediate to acid volcanic rocks of the Bahía Laura Volcanic Complex. This voluminous volcanism originated in a widespread extensional...
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