Deseado Massif hot spring deposits (Late Jurassic, Patagonia, Argentina) and their association with epithermal systems

摘要

The Deseado Massif volcanic and epithermal province is located in the northern portion of the Santa Cruz province, southern Argentinean Patagonia (Fig. 1). It is a 60,000 km2 geological unit recording an extensive Middle to Late Jurassic bimodal calc-alkaline volcanic event demarcated by the Bahía Laura Complex (BLC), consisting of andesites, intermediate to acidic primary volcanics, and late acidic reworked volcanic rocks (Guido & Campbell, 2011).