The Une Formation (, Kiu) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The predominantly sandstone formation dates to the Middle Cretaceous period; Albian to Cenomanian epochs and has a maximum thickness of .
Etymology The formation was defined in 1957 by Hubach after Une, Cundinamarca.Acosta & Ulloa, 2002, p.53
Description Lithologies The Une Formation has a maximum thickness of and is characterised by a sequence of sandstones.Acosta & Ulloa, 2002, p.54 Fossils of Heminautilus etheringtoni have been found in the Une Formation.Badouin et al., 2016, p.87
Stratigraphy and depositional environment The Une Formation, part of the Villeta Group, overlies the Fómeque Formation and is overlain by the Chipaque Formation. The age has been estimated to be Albian-Cenomanian. Stratigraphically, the formation is time equivalent with the Simijaca, Aguardiente, Caballos and Pacho Formations. The formation has been deposited in a near shore deltaic environment.Acosta & Ulloa, 2002, p.46
Outcrops
The Une Formation is apart from its type locality, found on the Sumapaz Páramo.
Regional correlations
See also
Geology of the Eastern Hills Geology of the Ocetá Páramo Geology of the Altiplano Cundiboyacense
Notes
References
Bibliography
Maps
External links