Cerro Archibarca

{{coord|25|15|S|67|50|W|type:mountain_region:AR-CT|display=intitle|notes=}}

Cerro Archibarca is a volcano in the Andes, in Salta Province, Argentina. It covers a surface area of {{convert|20|km2}}. Lava flows descend from a conical edifice.{{rp|19}} It was active 11 million years ago. The youngest deposits are eroded andesites on the northern side.

A major volcaniclastic unit is associated with Archibarca, named the La Torre formation after the valley where its lower bright red unit reaches a thickness of {{convert|20|m}}. The red unit is formed from unconsolidated pyroclastics with spherical clasts ({{convert|3|cm}} up to {{convert|10|cm}}). Granite and pumice are materials also present in this unit. The upper white unit is a thick pyroclastic flow from Archibarca. A {{convert|30|m}} thick rhyolitic flow with banding structures is also present as well as an associated lava dome that intruded the La Torre formation on the volcano's southern side.

Andesites from this volcano are partly derived from crustal assimilation, with the crustal component constituting 40% of total rock.{{rp|103}} The Caballo Muerto and Archibarca ignimbrites may be derived from this volcano.

References

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{{cite journal|last1=Kraemer|first1=B.|last2=Adelmann|first2=D.|last3=Alten|first3=M.|last4=Schnurr|first4=W.|last5=Erpenstein|first5=K.|last6=Kiefer|first6=E.|last7=van den Bogaard|first7=P.|last8=Görler|first8=K.|title=Incorporation of the Paleogene foreland into the Neogene Puna plateau: The Salar de Antofalla area, NW Argentina|journal=Journal of South American Earth Sciences|date=March 1999|volume=12|issue=2|pages=157–182|doi=10.1016/S0895-9811(99)00012-7}}

{{cite book|last1=Kraemer|first1=Bernhard|title=Eine geochemische Traverse quer zum mittelmiozänen magmatischen Bogen im südlichen Bereich der zentralen vulkanischen Zone der Anden (ZVZ, 25 - 2630'S, 6730'- 69W)|date=1999|publisher=Selbstverlag Fachbereich Geowissenschaften, FU Berlin|location=Berlin|isbn=9783895820687|url=https://books.google.com/books?id=fm5NAQAAIAAJ|accessdate=22 November 2015|language=de}}

{{cite journal|last1=Schnurr|first1=W.B.W.|last2=Trumbull|first2=R.B.|last3=Clavero|first3=J.|last4=Hahne|first4=K.|last5=Siebel|first5=W.|last6=Gardeweg|first6=M.|title=Twenty-five million years of silicic volcanism in the southern central volcanic zone of the Andes: Geochemistry and magma genesis of ignimbrites from 25 to 27 °S, 67 to 72 °W|journal=Journal of Volcanology and Geothermal Research|date=September 2007|volume=166|issue=1|pages=17–46|doi=10.1016/j.jvolgeores.2007.06.005|url=https://gfzpublic.gfz-potsdam.de/pubman/item/item_235642}}

{{cite journal|last1=Richards|first1=Jeremy P.|last2=Ullrich|first2=Thomas|last3=Kerrich|first3=Robert|title=The Late Miocene–Quaternary Antofalla volcanic complex, southern Puna, NW Argentina: Protracted history, diverse petrology, and economic potential|journal=Journal of Volcanology and Geothermal Research|date=April 2006|volume=152|issue=3–4|pages=197–239|doi=10.1016/j.jvolgeores.2005.10.006}}

{{cite web|last1=Alonso|first1=Ricardo|title=LEXICO ESTRATIGRÁFICO DE LA ARGENTINA: NEÓGENO|url=http://segemar.gob.ar/pdf/institucional/lexico/neogeno.pdf|website=Servicio Geológico Minero Argentino (SEGEMAR)|publisher=Government of Argentina|accessdate=22 November 2015|archiveurl=https://web.archive.org/web/20151122123636/http://segemar.gob.ar/pdf/institucional/lexico/neogeno.pdf|archivedate=22 November 2015|location=Buenos Aires|pages=17–18|language=es}}}}

Category:Miocene volcanoes

Category:Volcanoes of Salta Province

Category:Volcanoes of Catamarca Province