Bogotá Formation
The Bogotá Formation (Spanish: Formación Bogotá, E1-2b, Tpb, Pgb) is a geological formation of the Eastern Hills and Bogotá savanna on the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The predominantly shale and siltstone formation, with sandstone beds intercalated, dates to the Paleogene period; Upper Paleocene to Lower Eocene epochs, with an age range of 61.66 to 52.5 Ma, spanning the Paleocene–Eocene Thermal Maximum. The thickness of the Bogotá Formation ranges from 169 metres (554 ft) near Tunja to 1,415 metres (4,642 ft) near Bogotá. Fossils of the ungulate Etayoa bacatensis have been found in the Bogotá Formation, as well as numerous reptiles, unnamed as of 2017.
| Bogotá Formation | |
|---|---|
| Stratigraphic range: Late Paleocene-Early Eocene (Peligran-Casamayoran) | |
| Type | Geological formation |
| Underlies | Regadera Formation |
| Overlies | Cacho Formation |
| Thickness | 169–1,415 m (554–4,642 ft) |
| Lithology | |
| Primary | Mudstone, shale, siltstone |
| Other | Sandstone |
| Location | |
| Coordinates | 4°29′18.4″N 74°08′08.5″W |
| Region | Bogotá savanna & Eastern Hills, Altiplano Cundiboyacense Eastern Ranges, Andes |
| Country | Colombia |
| Type section | |
| Named for | Bogotá |
| Named by | Hettner |
| Location | Ciudad Bolívar, Bogotá |
| Year defined | 1892 |
| Coordinates | 4°29′18.4″N 74°08′08.5″W |
| Approximate paleocoordinates | 2.1°N 62.4°W |
| Region | Cundinamarca |
| Country | Colombia |
Paleogeography of Northern South America 50 Ma, by Ron Blakey | |
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