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searching for Puncoviscana Formation 4 found (21 total)

Geology of Argentina (1,436 words) [view diff] exact match in snippet view article find links to article

years ago. Extremely ancient trace fossils have been found in the Puncoviscana Formation in the northwest, which grades into gneiss, schist and migmatite

Nevado de Acay (1,562 words) [view diff] case mismatch in snippet view article find links to article

18.9 million years ago. Emplaced within the Precambrian-Cambrian Puncoviscana formation, the Nevado de Acay monzonite contains biotite, diorite, hornblende

Negra Muerta volcanic complex (1,469 words) [view diff] exact match in snippet view article find links to article

Salta Group of Cretaceous-Tertiary age and the below lying Cambrian Puncoviscana Formation. These sediments formed within rifting basins and contain both volcanic

Aguas Calientes caldera (2,063 words) [view diff] exact match in snippet view article find links to article

caldera is located on the Late Neoproterozoic to Early Cambrian Puncoviscana Formation with turbiditic sandstone that was affected by metamorphism. A volcano-sedimentary