Cerro Negro Formation

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 / -7.201194; -60.346694Coordinates: 7°12′04.3″S 60°20′48.1″W / 7.201194°S 60.346694°W / -7.201194; -60.346694
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

References

  1. ↑ 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". Latin American Journal of Sedimentology and Basin Analysis (in Spanish). 22 (2). Retrieved 2018-09-04.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.