La Cascada Formation

La Cascada Formation a sedimentary formation near Futaleufú in the western Patagonian Andes of southern Chile. Lithologies vary from sandstone, siltstone and conglomerate. The sediment that now forms the rock deposited during the Oligocene and Early Miocene epoch in shallow marine environment. The formation contain fossils of bivalves and gastropods.[1]

La Cascada Formation
Stratigraphic range: Late OligoceneEarly Miocene
TypeGeological formation
OverliesCretaceous granitoids
Divisadero Group
Lower Jurassic volcanic rocks
Thickness130 m (430 ft)
Lithology
PrimarySandstone, siltstone, conglomerate
Location
RegionLos Lagos Region
Country Chile
Type section
Named byThiele et al., 1978

The formation unconformably overlies sedimentary rock of Jurassic age, Cretaceous sedimentary rocks of Divisadero Group and Cretaceous granite plutons.[1][2]

Further south in Aysén Region, the Guadal Formation is a geologically equivalent formation.[1]

See also

References

  1. Encinas, Alfonso; Folguera, Andrés; Bechis, Florencia; Finger, Kenneth L.; Zambrano, Patricio; Pérez, Felipe; Benarbé, Pablo; Tapia, Francisca; Riffo, Ricardo; Buatois, Luis; Orts, Darío; Nielsen, Sven N.; Valencia, Victor V.; Cituño, José; Oliveros, Verónica; De Girolamo Del Mauro, Lizet; Ramos, Víctor A. (2018). "The Late Oligocene–Early Miocene Marine Transgression of Patagonia". In Folguera, A., Contreras Reyes, E., Heredia, N., Encinas, A., B. Iannelli, S., Oliveros, V., M. Dávila, F., Collo, G., Giambiagi, L., Maksymowicz, A., Iglesia Llanos, M.P., Turienzo, M., Naipauer, M., Orts, D., D. Litvak, V., Alvarez, O., Arriagada, C. (eds.). The Evolution of the Chilean-Argentinean Andes. Springer. pp. 443–474. ISBN 978-3-319-67774-3.CS1 maint: uses editors parameter (link)
  2. Charrier, Reynaldo; Pinto, Luisa; Rodríguez, María Pía (2006). "3. Tectonostratigraphic evolution of the Andean Orogen in Chile". In Moreno, Teresa; Gibbons, Wes (eds.). Geology of Chile. Geological Society of London. p. 107. ISBN 9781862392199.
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