Goliad Formation
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The Goliad Formation (Tg)[1] is a geologic formation in Texas. It preserves fossils dating back to the Serravallian to earliest Pliocene stages (Clarendonian, Hemphillian and earliest Blancan in the NALMA classification) of the Neogene period,[2] including the gomphothere Blancotherium among many other fossil mammals, reptiles, birds and fish.
Quick Facts Type, Sub-units ...
Goliad Formation | |
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Stratigraphic range: Clarendonian-Blancan ~13.6–5.2 Ma | |
Type | Formation |
Sub-units | Lapara, Lagarto Creek & Labahia Members |
Underlies | Pleistocene terrace deposits |
Overlies | Fleming Formation |
Thickness | 60–425 m (197–1,394 ft) |
Lithology | |
Primary | Sandstone, claystone |
Other | Marl, caliche, limestone, conglomerate |
Location | |
Coordinates | 28.6°N 97.7°W / 28.6; -97.7 |
Approximate paleocoordinates | 29.0°N 95.3°W / 29.0; -95.3 |
Region | Bee, Goliad, Hidalgo & Live Oak counties, Texas |
Country | United States |
Extent | Texas coastal plain |
Type section | |
Named for | Goliad County |
Named by | Plummer |
Year defined | 1932 |
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The formation hosts uranium deposits and forms the Evangeline aquifer underneath the city of Houston.