La Cascada Formation: Difference between revisions
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'''La Cascada Formation''' a [[Geological formation|sedimentary formation]] near [[Futaleufú, Chile|Futaleufú]] in the western [[Patagonia]]n [[Andes]] of southern Chile. Lithologies vary from [[sandstone]], [[siltstone]] and [[conglomerate (geology)|conglomerate]]. The sediment that now forms the rock deposited during the [[Oligocene]] and [[Miocene|Early Miocene]] epoch in shallow marine environment. The formation contain fossils of [[bivalve]]s and [[gastropod]]s.<ref name=long>{{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. |
'''La Cascada Formation''' a [[Geological formation|sedimentary formation]] near [[Futaleufú, Chile|Futaleufú]] in the western [[Patagonia]]n [[Andes]] of southern Chile. Lithologies vary from [[sandstone]], [[siltstone]] and [[conglomerate (geology)|conglomerate]]. The sediment that now forms the rock deposited during the [[Oligocene]] and [[Miocene|Early Miocene]] epoch in shallow marine environment. The formation contain fossils of [[bivalve]]s and [[gastropod]]s.<ref name=long>{{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}}</ref> |
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The formation [[unconformity|unconformably]] overlies [[sedimentary rock]] of [[Jurassic]] age, [[Cretaceous]] sedimentary rocks of [[Divisadero Group]] and Cretaceous [[granite]] [[pluton (geology)|plutons]].<ref name=long/><ref name=Charrieretal2006>{{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}}</ref> |
The formation [[unconformity|unconformably]] overlies [[sedimentary rock]] of [[Jurassic]] age, [[Cretaceous]] sedimentary rocks of [[Divisadero Group]] and Cretaceous [[granite]] [[pluton (geology)|plutons]].<ref name=long/><ref name=Charrieretal2006>{{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}}</ref> |
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Latest revision as of 13:07, 17 December 2020
| La Cascada Formation | |
|---|---|
| Stratigraphic range: Late Oligocene–Early Miocene | |
| Type | Geological formation |
| Overlies | Cretaceous granitoids Divisadero Group Lower Jurassic volcanic rocks |
| Thickness | 130 m (430 ft) |
| Lithology | |
| Primary | Sandstone, siltstone, conglomerate |
| Location | |
| Region | Los Lagos Region |
| Country |  Chile |
| Type section | |
| Named by | Thiele et al. |
| Year defined | 1978 |
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]
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
[edit]References
[edit]- ^ a b c 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.; Iannelli, S. B.; Oliveros, V.; M. Dávila, F.; Collo, G.; Giambiagi, L.; Maksymowicz, A.; Iglesia Llanos, M.P.; Turienzo, M.; Naipauer, M.; Orts, D.; Litvak, V. D.; Alvarez, O.; Arriagada, C. (eds.). The Evolution of the Chilean-Argentinean Andes. Springer. pp. 443–474. ISBN 978-3-319-67774-3.
- ^ 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.
