Javelina Formation
Geological formation in Texas, USA / From Wikipedia, the free encyclopedia
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The Javelina Formation is a geological formation in Texas. Dating has shown that the strata date to the Maastrichtian stage of the Late Cretaceous, approximately 70 to 66.5 million years old.[1] The middle part of the formation has been dated to about 69 million years ago plus or minus 1 million years and the top situated near the Cretaceous–Paleogene boundary (in the overlying Black Peaks Formation[1]), dated to 66 Ma ago.[2] Dinosaur remains are among the fossils that have been recovered from the formation.[3]
Quick Facts Type, Unit of ...
Javelina Formation | |
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Stratigraphic range: Maastrichtian, 70–66.5 Ma | |
Type | Geological formation |
Unit of | Tornillo Group |
Underlies | Black Peaks Formation |
Overlies | Aguja Formation |
Lithology | |
Primary | Sandstone |
Other | Claystone, mudstone, siltstone, conglomerate |
Location | |
Coordinates | 29.3°N 103.4°W / 29.3; -103.4 |
Approximate paleocoordinates | 36.0°N 82.8°W / 36.0; -82.8 |
Region | Texas |
Country | USA |
Type section | |
Named for | Javelina |
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