Late Paleozoic glacial deposits of Brazil: Paraná Basin
Published:January 01, 2008
A.C Rocha-Campos, Paulo R dos Santos, José R Canuto, 2008. "Late Paleozoic glacial deposits of Brazil: Paraná Basin", Resolving the Late Paleozoic Ice Age in Time and Space, Christopher R. Fielding, Tracy D. Frank, John L. Isbell
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In the early Pennsylvanian, glacial lobes draining from an ice sheet probably centered on the northern highlands of Namibia (Windhoek ice sheet) reached the eastern margin of the marine-flooded Paraná Basin in southeastern and southern Brazil. Here, the glacier lobes extended at least 50 km across the depositional surface and terminated in a grounded tidewater system. The late Paleozoic paleolatitude of 40°–50°S of the Paraná Basin is consistent with a temperate warm-based regime for the glaciers. Accumulation of glacially influenced sediments in the main northern depocenter of the rapidly subsiding cratonic depression may have been preceded by deposition of proglacial...