Bajo Barreal Formation
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The Bajo Barreal Formation is a geological formation in the Golfo San Jorge Basin of Chubut and Santa Cruz, Argentina whose strata date back to the Middle Cenomanian to Late Turonian. The formation was first described by Teruggi & Rossetto in 1963.[1] The sandstones, claystones, mudstones, conglomerates and tuff were deposited in a fluvial environment.[2] The upper part of formation is laterally equivalent to the Yacimiento El Trébol and Meseta Espinosa Formation and the lower part to the Laguna Palacios, Cañadón Seco and Comodoro Rivadavia Formations. The Bajo Barreal Formation is a reservoir rock in the Golfo San Jorge Basin.[3]
Quick Facts Type, Unit of ...
Bajo Barreal Formation | |
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Stratigraphic range: Mid Cenomanian-Late Turonian ~97–90 Ma | |
Type | Geological formation |
Unit of | Chubut Group |
Underlies | Lago Colhué Huapí Formation |
Overlies | Castillo Formation |
Lithology | |
Primary | Sandstone |
Other | Claystone, mudstone, conglomerate, tuff |
Location | |
Coordinates | 45.3°S 69.6°W / -45.3; -69.6 |
Approximate paleocoordinates | 51.6°S 46.7°W / -51.6; -46.7 |
Region | Chubut, Santa Cruz |
Country | Argentina |
Extent | Golfo San Jorge Basin |
Type section | |
Named by | Teruggi & Rossetto |
Year defined | 1963 |
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