Chorrillo Formation

Chorrillo Formation
Stratigraphic range: Maastrichtian
Satellite image of the Chorrillo Formation site (in the middle on the right). In the bottom left is the Perito Moreno Glacier.
TypeGeological formation
UnderliesCalafate Formation
OverliesLa Irene Formation
Thickness>50 m (160 ft)
Lithology
PrimaryClaystone
Location
LocationPatagonia
Coordinates49°54′S 72°30′W / 49.9°S 72.5°W / -49.9; -72.5
Approximate paleocoordinates51°48′S 62°12′W / 51.8°S 62.2°W / -51.8; -62.2
RegionSanta Cruz Province
CountryArgentina
ExtentSoutheast of Viedma Lake
North of Argentino Lake
Austral Basin
Type section
Named byArbe & Hechem
Year defined1984
Chorrillo Formation is located in Argentina
Chorrillo Formation
Chorrillo Formation (Argentina)
Non-avian dinosaurs named from the Chorrillo Formation

The Chorrillo Formation, also named as Chorillo Formation,[1] is a Maastrichtian (Late Cretaceous Epoch, 72.1 - 66 million years ago) geologic formation in southern Patagonia, Argentina. The formation is more than 50 metres (160 ft) thick and underlies the Calafate Formation and rests on top of the La Irene Formation.[2]

  1. ^ Río Leona at Fossilworks.org
  2. ^ Marenssi et al., 2003, p.406