Alcobaça Formation
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The Alcobaça Formation, previously known as the Guimarota Formation and also known as the Consolação Unit,[1] is a geological formation in Portugal.[2] It dates back to the Kimmeridgian stage of the Late Jurassic. It is an important source of information on the diversity of Late Jurassic mammals.[3][4] Many of the fossils were collected from the now disused and flooded Camadas de Guimarota coal mine.
Quick Facts Type, Sub-units ...
Alcobaça Formation | |
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Stratigraphic range: Kimmeridgian ~156.9–152.5 Ma | |
Type | Geological formation |
Sub-units | Camadas de Guimarota |
Underlies | Lourinhã Formation |
Overlies | Montejunto Formation |
Lithology | |
Primary | Marl |
Other | Mudstone, coal, siltstone, limestone, sandstone |
Location | |
Coordinates | 39.6°N 9.0°W / 39.6; -9.0 |
Approximate paleocoordinates | 33.7°N 1.6°E / 33.7; 1.6 |
Region | Estremadura, Leiria, Lisboa |
Country | Portugal |
Extent | Lusitanian Basin |
Type section | |
Named for | Alcobaça, Portugal |
Named by | Choffat |
Year defined | 1885 |
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