La Cascada Formation

{{Infobox rockunit

| name = La Cascada Formation

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| type = Geological formation

| period = Miocene

| age = Late Oligocene–Early Miocene

| prilithology = Sandstone, siltstone, conglomerate

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| namedfor =

| namedby = Thiele et al.

| year_ts = 1978

| region = Los Lagos Region

| country = Chile

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| overlies = Cretaceous granitoids
Divisadero Group
Lower Jurassic volcanic rocks

| thickness = {{convert|130|m|ft|abbr=on}}

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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.{{cite book |last1=Encinas|first1=Alfonso |last2=Folguera|first2=Andrés|last3=Bechis|first3=Florencia|last4=Finger|first4=Kenneth L.|last5=Zambrano|first5=Patricio|last6=Pérez|first6=Felipe|last7=Benarbé|first7=Pablo|last8=Tapia|first8=Francisca|last9=Riffo|first9=Ricardo|last10=Buatois|first10=Luis|last11=Orts|first11=Darío|last12=Nielsen|first12=Sven N. |last13=Valencia|first13=Victor V.|last14=Cituño|first14=José |last15=Oliveros|first15=Verónica |last16=De Girolamo Del Mauro|first16=Lizet|last17=Ramos|first17=Víctor A.|date=2018 |chapter=The Late Oligocene–Early Miocene Marine Transgression of Patagonia|title=The Evolution of the Chilean-Argentinean Andes |editor=Folguera, A. |editor2=Contreras Reyes, E. |editor3=Heredia, N. |editor4=Encinas, A. |editor5=Iannelli, S. B. |editor6=Oliveros, V. |editor7=M. Dávila, F. |editor8=Collo, G. |editor9=Giambiagi, L. |editor10=Maksymowicz, A. |editor11=Iglesia Llanos, M.P. |editor12=Turienzo, M. |editor13=Naipauer, M. |editor14=Orts, D. |editor15=Litvak, V. D. |editor16=Alvarez, O. |editor17=Arriagada, C. |publisher=Springer|pages=443–474 |isbn=978-3-319-67774-3 |author-link17=Víctor Alberto Ramos}}

The formation unconformably overlies sedimentary rock of Jurassic age, Cretaceous sedimentary rocks of Divisadero Group and Cretaceous granite plutons.{{cite book |last=Charrier |first=Reynaldo|last2=Pinto |first2=Luisa |last3=Rodríguez |first3=María Pía|author-link=Reynaldo Charrier |editor-last=Moreno |editor-first=Teresa |editor-last2=Gibbons |editor-first2=Wes |title=Geology of Chile |publisher=Geological Society of London |date=2006 |page=107 |chapter=3. Tectonostratigraphic evolution of the Andean Orogen in Chile |isbn=9781862392199}}

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