The Rio do Rasto Formation is a Late Permian sedimentary geological formation in the South Region of Brazil. The official name is Rio do Rasto, although in some publications it appears as Rio do Rastro.
Rio do Rasto Formation | |
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Stratigraphic range: Late Permian | |
Type | Geological formation |
Unit of | Paraná & Pelotas Basins |
Sub-units | Morro Pelado Mb., Serrinha Mb. |
Underlies | Pirambóia Formation (Paraná Basin) Botucatu Formation (Pelotas Basin) |
Overlies | Teresina Formation |
Lithology | |
Primary | Shale, sandstone |
Location | |
Coordinates | 28°24′26″S 49°32′46″W / 28.40722°S 49.54611°W |
Approximate paleocoordinates | 41°18′S 22°24′W / 41.3°S 22.4°W |
Region | Paraná, Santa Catarina, Rio Grande do Sul |
Country | Brazil |
Extent | Paraná Basin |
Extent of Paleozoic (including the Rio do Rasto Formation) and Mesozoic units in the Paraná Basin in light blue |
It is found mainly in the Brazilian states of Santa Catarina, Paraná, and Rio Grande do Sul. It was formed during the Late Permian epoch of the Permian period.[1][2]
The following fossils have been uncovered from the formation:[3][4]