Sobre el hallazgo del mitico volcan Reclus, ex Mano del Diablo, Hielo Patagonico Sur, Magallanes, Chile

Abstract

RESUMEN. Se da a conocer el descubrimiento de un aparato volcanico de edad pleistocena a reciente, al que se propone denominar Reclus, en la cuenca de alimentacion del glaciar Amalia, vertiente occidental del Hielo Patagonico Sur, 50°57'50"S; 73°35'W. Corresponde al verdadero centro de emision de las rocas volcanicas atribuidas a efusiones de Cerro Mano del Diablo, que no es un volcan. Esta constituido por dacitas de hornblenda y piroxeno o biotita, calcoalcalinas, cuya petrografia y geoquimica son consistentes con su ubicacion en la Zona Volcanica Austral y con su posicion meridiana entre los volcanes Burney y Aguilera. ABSTRACT. A volcanic center of pleistocene to recent age located in the valley of the Amalia glaciar feeding basin on the western side of the Southern Patagonian Ice-Cap, at 50°57'50"S and 73°35'5"W, is described in this paper. This volcano named Reclus is the actual effusive center of the volcanic rocks previously assigned to Cerro Mano del Diablo which has no volcanic character at all. The lavas of Reclus volcano are mainly hornblende and pyroxene or biotite dacites of calcalkaline affinities with petrography and geochemistry consistent with its position in the Austral Volcanic Zone between MI. Burney and Aguilera volcanoes.