Arintica

Arintica is a stratovolcano located in Arica y Parinacota Region of Chile, near the border with Bolivia. It lies north of the Salar de Surire. The volcano has a main summit in the north, a slightly shorter southern summit and a subsidiary peak in the west. A glacier valley lies between the summits.[2]: 325  The height of the snowline is 5,590 metres (18,340 ft).[3] Stage II moraines found on Arintica have altitudes ranging from 4,350 metres (14,270 ft) on the southern flank to 4,550 metres (14,930 ft) on the eastern flank. On the western flank they reach altitudes of 4,400 metres (14,400 ft).[4] In total, five glaciers surrounded Arintica and drained into the Salar de Surire.[5] Presently, rock glaciers are active on the mountain.[6]

Arintica
Arintica (left) and Pukintika (right) as seen from Polloquere hot springs area.
Highest point
Elevation5,597 m (18,363 ft)[1]
Coordinates18°44′50″S 69°04′00″W[1]
Geography
LocationChile
Parent rangeAndes
Geology
Mountain typeStratovolcano
Last eruptionUnknown

Potassium-argon dating has yielded an age of 637000±19000 years on rocks from Arintica.[7] The volcano was constructed in two phases and postglacial lava flows have been found by Landsat imagery, but they are unsampled.[8] A previously identified southeastern lava flow has been later identified as a debris avalanche,[9] and other lava flows in the crater are actually rock glaciers.[7] A dacitic lava dome is found southwest of the volcano and is named Calajata.[9] In a 2011 hazard map Arintica was considered a potentially dangerous volcano of Chile.[10] Whether the volcano was active in the Holocene is contentious[9] and there is no indication of historical eruptions. Renewed activity would probably be of small magnitude and only have local impacts.[7] A belt of Polylepis woods surrounds the volcano.[2]: 322 

See also

References
  1. Shanaka L. De Silva; Peter William Francis (1 January 1991). Volcanoes of the Central Andes. Springer-Verlag. p. 21. ISBN 978-3-540-53706-9.
  2. Carl Troll (1985). Tagebücher der Reisen in Bolivien 1926/1927 (in German). F. Steiner Verlag Wiesbaden. ISBN 9783515045674.
  3. Ram Bali Singh (1992). Dynamics of Mountain Geosystems. APH Publishing. p. 164. ISBN 978-81-7024-472-1.
  4. Ammann, Caspar; Jenny, Bettina; Kammer, Klaus; Messerli, Bruno (August 2001). "Late Quaternary Glacier response to humidity changes in the arid Andes of Chile (18–29°S)". Palaeogeography, Palaeoclimatology, Palaeoecology. 172 (3–4): 317. Bibcode:2001PPP...172..313A. doi:10.1016/S0031-0182(01)00306-6.
  5. Jenny, Bettina; Kammer, Klaus (1996). Climate Change in den trockenen Anden (in German). Verlag des Geographischen Institutes der Universität Bern. p. 46. ISBN 3906151034.
  6. Barcaza, Gonzalo; Nussbaumer, Samuel U.; Tapia, Guillermo; Valdés, Javier; García, Juan-Luis; Videla, Yohan; Albornoz, Amapola; Arias, Víctor (2017). "Glacier inventory and recent glacier variations in the Andes of Chile, South America". Annals of Glaciology. 58 (75pt2): 177. Bibcode:2017AnGla..58..166B. doi:10.1017/aog.2017.28. ISSN 0260-3055.
  7. Amigo, Álvaro R.; Bertin, Daniel U.; Orozco, Gabriel L. (2012). Peligros volcánicos de la Zona Norte de Chile (PDF) (Report). Carta geológica de Chile: Serie Geología Ambiental (in Spanish). Vol. 17. SERVICIO NACIONAL DE GEOLOGÍA Y MINERÍA. p. 11. ISSN 0717-7305. Retrieved 20 August 2021.
  8. Klaus-Joachim Reutter; Ekkehard Scheuber; Peter Wigger (6 December 2012). Tectonics of the Southern Central Andes: Structure and Evolution of an Active Continental Margin. Springer Science & Business Media. p. 82. ISBN 978-3-642-77353-2.
  9. "Arintica". Global Volcanism Program. Smithsonian Institution.
  10. "PELIGROS VOLCÁNICOS DE CHILE" (PDF). sernageomin.cl. SERNAGEOMIN. Archived from the original (PDF) on 22 October 2016. Retrieved 5 June 2016.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.