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Data · collection · 2016

Geology of the Manantial Espejo epithermal district, Deseado Massif, Patagonia Argentina

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The silver–gold epithermal mining district, Manantial Espejo, is located southwest of the Deseado Massif, Patagonia.

Description

The district is set into Jurassic volcaniclastic rocks of the Bahía Laura Group. A geological map of the district, at a scale of 1:50,000 drawn over a base map prepared from the fusion of satellite imagery and aerial photographs, is included.

A suite of andesitic to rhyolitic eruptive units was identified, with prevailing high-grade rhyolitic ignimbrites. Travertine levels show the beginning of a hot-spring system in the region. Quartz veins, with typical crustiform–colloform banded structures, fill WNW, sub-vertical, normal faults, originating from extensional tectonics.

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The silicification of travertines, tuffs and breccia is the most common hydrothermal alteration.

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Satellite remote sensing 65%

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Provenance · 1 source records, 12 field assertions
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DataCite10.6084/m9.figshare.c.326084514 d agoJSON v1
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concepts[modality].local:modality:remote-sensingenrichment · DataCitekeyword-concept-rules@1.0.0title+description (65%)
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