NeoproterozoicglaciationsinSouthAmerica:?SnowballEarth?and ?Phantomglacial?records.

MARÍA JULIA ARROUY; POIRE DANIEL; LUCIA GÓMEZ PERAL

Viena

Congreso; General Assembly of the European Geosciences Union; 2018

EGU

Neoproterozoic diamictite rocks as tillites or glaciomarine deposits have been recorded as the product of regional glaciations around the world, according to the ?Snowball Earth? hypothesis. However, in some parts of the planet, contemporaneous non-glaciogenic sedimentary rocks have also been observed related to sedimentation in nonglacial environments but influenced by planetary glaciation, which was named ?Phantom glacial?, in a ?Slushball Earth? scenario. In the first model, the glacial mass covered the entire planet during the glaciation times, meanwhile in the ?slushball? hypothesis that Earth was not completely frozen during periods of extreme glaciations.