Black Peaks Formation | |
---|---|
Stratigraphic range:
Maastrichtian-
Danian (
Tiffanian) ~ | |
Type | Geological formation |
Unit of | Tornillo Group |
Overlies | Javelina Formation |
Lithology | |
Primary | Mudstone |
Other | Limestone |
Location | |
Coordinates | 29°18′N 103°24′W / 29.3°N 103.4°W |
Approximate paleocoordinates | 36°00′N 82°48′W / 36.0°N 82.8°W |
Region | ![]() |
Country | ![]() |
The Black Peaks Formation is a geological formation in Texas whose strata date back to the Late Cretaceous. Dinosaur remains (from the sauropod Alamosaurus) and the pterosaur Quetzalcoatlus northropi [1] have been among the fossils reported from the formation. [2] [3] The boundary with the underlying Javelina Formation has been estimated at 66.5 million years old. [4] The formation preserves the rays Rhombodus and Dasyatis, as well as many gar scales. [5]
Black Peaks Formation | |
---|---|
Stratigraphic range:
Maastrichtian-
Danian (
Tiffanian) ~ | |
Type | Geological formation |
Unit of | Tornillo Group |
Overlies | Javelina Formation |
Lithology | |
Primary | Mudstone |
Other | Limestone |
Location | |
Coordinates | 29°18′N 103°24′W / 29.3°N 103.4°W |
Approximate paleocoordinates | 36°00′N 82°48′W / 36.0°N 82.8°W |
Region | ![]() |
Country | ![]() |
The Black Peaks Formation is a geological formation in Texas whose strata date back to the Late Cretaceous. Dinosaur remains (from the sauropod Alamosaurus) and the pterosaur Quetzalcoatlus northropi [1] have been among the fossils reported from the formation. [2] [3] The boundary with the underlying Javelina Formation has been estimated at 66.5 million years old. [4] The formation preserves the rays Rhombodus and Dasyatis, as well as many gar scales. [5]