User:Magnatyrannus/Koluel Kaike Formation
Geologic formation in Chubut Province, Argentina / From Wikipedia, the free encyclopedia
The Koluel Kaike Formation is a geological formation in Chubut Province, Argentina which spans around 50 to 47.1 million years ago from the Early to Middle Eocene.It predominantly consists of pyroclastic deposits[1], which were deposited in a semi-arid environment.[2] It is divided up into a number of members.[1] The diverse fauna of the Sarmiento Formation, including a variety of freshwater fish, crocodilians, turtles and snakes, also includes many mammals such as South American native ungulates (notoungulates, litopterns, astrapotheres) as well as armadillos, and caviomorph rodents.[3]
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Koluel Kaike Formation | |
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Stratigraphic range: Lutetian (Casamayoran-Mustersan) ~50–47.1 Ma | |
Underlies | Sarmiento Formation Gaiman Formation |
Thickness | 319 metres |
Lithology | |
Primary | Sandstone, mudstone |
Other | Limestone |
Location | |
Country | ![]() |
Extent | Golfo San Jorge Basin |
Type section | |
Location | Sarmiento Department, Chubut |
Region | Chubut Province |
Country | Argentina |
Thickness at type section | 319 metres (1,047 ft) (tuffs) |