Llanquihue glaciation: Difference between revisions

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As glaciers retreated the volcanoes of the [[Andean Volcanic Belt|Southern Volcanic Zone]] in the Chilean Lake District underwent transition from high production rates of [[volcanic ash]] and [[pyroclast]]s from explosive eruptions to a period of lower ash and pyroclast production associated with a change in magma type from [[felsic]] to [[mafic]]. Subsequently, felsic magmatism and explosive eruption resumed. All of this has been thought to be linked to changes in the stress field of the volcanoes and their plumbing system caused by unloading of ice. As deglaciation proceeded faster in the north there is an apparent lag in the onset of this behavior among volcanoes. The period of less explosive volcanism spanned from about 17–4 ka BP in [[Villarrica (volcano)|Villarrica]] (39°25' S), 10–2 ka BP in [[Mocho-Choshuenco]] (39°55' S), 6–2 ka BP in [[Puyehue-Cordón Caulle]] (40°35' S) and [[Calbuco (volcano)|Calbuco]] (41°20' S).<ref>{{cite journal |last1=Rawson |first1=Harriet |last2=Pyle |first2=David M.|last3=Mather |first3=Tamsin A.|last4=Smith |first4=Victoria C.|last5=Fontijn |first5=Karen|last6=Lachowycz |first6=Stefan M.|last7=Naranjo |first7=José A. |date=2016 |title=The magmatic and eruptive response of arc volcanoes to deglaciation: Insights from southern Chile |journal=[[Geology (journal)|Geology]] |volume=44 |issue=4 |pages=251–254 |doi= 10.1130/G37504.1|bibcode=2016Geo....44..251R |doi-access=free }}</ref>
 
Various ephemeral [[proglacial lake]]s existed during the deglaciation including Castro Lake in central [[Chiloé Island]] and [[Great Tehuelche Paleolake|Paleolake Tehuelche]] in [[Torres del Paine]] (51° S).<ref>{{Cite journal |title=Glacial geomorphology of the central and southern Chilotan Archipelago (42.2°S–43.5°S), northwestern Patagonia |journal=[[Journal of Maps]] |last=Soteres |first=Rodrigo |issue=2 |volume=18 |pages=151-167 |last2=Sagredo |first2=Esteban A. |doi=10.1080/17445647.2021.2008538 |year=2022 |last3=Moreno |first3=Patricio I. |last4=Lowell |first4=Thomas V. |last5=Alloway |first5=Brent V.}}</ref><ref name=Garciaetal2014>{{cite journal |last1=García |first1=Juan-Luis |last2=Hall |first2=Brenda L.|last3=Kaplan |first3=Michael R.|last4=Vega |first4=Rodrigo M.|last5=Strelin |first5=Jorge A. |date=2014 |title=Glacial geomorphology of the Torres del Paine region (southern Patagonia): Implications for glaciation, deglaciation and paleolake history |journal=[[Geomorphology (journal)|Geomorphology]] |volume=204 |pages=599–616 |doi= 10.1016/j.geomorph.2013.08.036|bibcode=2014Geomo.204..599G |hdl=10533/129777 |hdl-access=free }}</ref><ref name=Solari>{{cite journal |last1=Solari |first1=Marcelo A. |last2=Le Roux |first2=Jacobus P. |last3=Hervé |first3=Francisco |last4=Airo |first4=Alessandro |last5=Calderón |first5=Mauricio|author-link3=Francisco Hervé |date=2012 |title=Evolution of the Great Tehuelche Paleolake in the Torres del Paine National Park of Chilean Patagonia during the Last Glacial Maximum and Holocene |url=http://www.redalyc.org/html/1739/173922203001/ |journal=[[Andean Geology]] |volume=39 |issue=1 |pages=1–21 |doi= 10.5027/andgeoV39N1-a01|doi-access=free }}</ref>
Various ephemeral [[proglacial lake]]s existed during the deglaciation including Castro Lake in central Chiloé Islad and [[Great Tehuelche Paleolake|Paleolake Tehuelche]] in [[Torres del Paine]] (51° S).<ref>{{Cite journal |title=Glacial geomorphology of the central and
southern Chilotan Archipelago (42.2°S–43.5°S),
northwestern Patagonia |journal=[[Journal of Maps]] |last=Soteres |first=Rodrigo |issue=2 |volume=18 |pages=151-167 |last2=Sagredo |first2=Esteban A. |doi=10.1080/17445647.2021.2008538 |year=2022 |last3=Moreno |first3=Patricio I. |last4=Lowell |first4=Thomas V. |last5=Alloway |first5=Brent V.}}</ref><ref name=Garciaetal2014>{{cite journal |last1=García |first1=Juan-Luis |last2=Hall |first2=Brenda L.|last3=Kaplan |first3=Michael R.|last4=Vega |first4=Rodrigo M.|last5=Strelin |first5=Jorge A. |date=2014 |title=Glacial geomorphology of the Torres del Paine region (southern Patagonia): Implications for glaciation, deglaciation and paleolake history |journal=[[Geomorphology (journal)|Geomorphology]] |volume=204 |pages=599–616 |doi= 10.1016/j.geomorph.2013.08.036|bibcode=2014Geomo.204..599G |hdl=10533/129777 |hdl-access=free }}</ref><ref name=Solari>{{cite journal |last1=Solari |first1=Marcelo A. |last2=Le Roux |first2=Jacobus P. |last3=Hervé |first3=Francisco |last4=Airo |first4=Alessandro |last5=Calderón |first5=Mauricio|author-link3=Francisco Hervé |date=2012 |title=Evolution of the Great Tehuelche Paleolake in the Torres del Paine National Park of Chilean Patagonia during the Last Glacial Maximum and Holocene |url=http://www.redalyc.org/html/1739/173922203001/ |journal=[[Andean Geology]] |volume=39 |issue=1 |pages=1–21 |doi= 10.5027/andgeoV39N1-a01|doi-access=free }}</ref>
 
== Notes ==