Navidad Formation
Marine Neogene sedimentary formation in Central Chile / From Wikipedia, the free encyclopedia
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Navidad Formation (Spanish: Formación Navidad) is a marine Neogene sedimentary formation located in Central Chile.[1] The formation is known for its diverse and abundant fossil record and is considered the reference unit for the marine Neogene in Chile.[1][2] Originally described by Charles Darwin in 1846 the formation has attracted the attention of numerous prominent geologists and paleontologists since then. As a key formation Navidad has been subject to a series of differing interpretations and scientific disputes over time.
Quick Facts Type, Underlies ...
Navidad Formation | |
---|---|
Stratigraphic range: Early-Mid Miocene | |
Type | Geological formation |
Underlies | Licancheu Formation |
Overlies | Paleozoic granitic basement Punta Tocopalma Formation |
Thickness | 100–200 m (330–660 ft) |
Lithology | |
Primary | Sandstone, siltstone, conglomerate |
Other | Coquina |
Location | |
Coordinates | 34.0°S 71.8°W / -34.0; -71.8 |
Approximate paleocoordinates | 34.2°S 69.7°W / -34.2; -69.7 |
Region | Valparaíso Region O'Higgins Region |
Country | Chile |
Type section | |
Named for | Navidad |
Named by | Darwin |
Year defined | 1846 |
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