Earth:Cerro Negro Formation
From HandWiki
| Cerro Negro Formation Stratigraphic range: Ediacaran | |
|---|---|
| Type | Formation |
| Unit of | La Providencia Group Tandilia System |
| Underlies | Balcarce Formation |
| Overlies | Sierra Bayas Group |
| Thickness | >150 m (490 ft) |
| Lithology | |
| Primary | Shale, sandstone |
| Other | Marl |
| Location | |
| Coordinates | [ ⚑ ] : 7°12′04.3″S 60°20′48.1″W / 7.201194°S 60.346694°W |
| Region | Buenos Aires Province |
| Country |  Argentina |
| Extent | Río de la Plata Craton |
The Cerro Negro Formation is a sedimentary formation of Ediacaran age in Buenos Aires Province, Argentina. The formation crops out along the Tandilia System, a chain of hills made up by of ancient rocks. Together with the formations of the underlying Sierra Bayas Group it is contains the oldest sedimentary formations in Argentina that have not been subject to significant metamorphism or deformation. In 2015 a complete revision of the formation was proposed.[1]
See also
- Dyke swarms of Tandil and Azul
- Puncoviscana Formation
- Nama Group
References
- ↑ Arrouy, M. Julia; Poiré, Daniel G.; Gómez Peral, Lucía E.; Canalicchio, José María (2015). "Sedimentología y estratigrafía del Grupo La Providencia (nom. nov.): cubierta superior neoproterozoica, Sistema de Tandilia, Argentina" (in Spanish). Latin American Journal of Sedimentology and Basin Analysis 22 (2). http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-49792015000200004. Retrieved 2018-09-04.
 |
