Hall Lake Formation | |
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Stratigraphic range: Late Cretaceous, Campanian–Maastrichtian ~ | |
Type | Geological formation |
Unit of | McRae Group |
Underlies | Jose Creek Member[1] |
Overlies | "Quaternary-Tertiary basalt flows and alluvium" |
Lithology | |
Primary | Mudstone, "shale", sandstone |
Location | |
Coordinates | 33°12′N 107°06′W / 33.2°N 107.1°W |
Approximate paleocoordinates | 40°30′N 81°06′W / 40.5°N 81.1°W |
Region | New Mexico |
Country | United States |
The Hall Lake Formation, formerly called the Hall Lake Member, is a geological formation in Sierra County, New Mexico preserving Lancian fauna, most notably dinosaurs. It is regarded as a member of the McRae Group, including the Elephant Butte and Staton-LaPoint locales.[2]