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NAVIDAD

NAVIDAD. By Maddie Kurtz and Fritha Wright Department of Geology Colby College January 28, 2013. Geography. Tectonic Setting. Form and Dimensions. - Lonquimay : La Araucanía Region of central Chile Navidad is a cinder cone of Lonquimay -elevation of 1900 meters

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NAVIDAD

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  1. NAVIDAD By Maddie Kurtz and Fritha Wright Department of Geology Colby College January 28, 2013

  2. Geography

  3. Tectonic Setting

  4. Form and Dimensions -Lonquimay: La Araucanía Region of central Chile Navidad is a cinder cone of Lonquimay -elevation of 1900 meters April1989: 210 meters high and 700 meters wide July 1989: 300 meters high, 800 meters wide at base

  5. Vents and Craters -December 25, 1988: Formation of Navidad -8 small active vents along fissure -Scoria ash and bombs ejected by Lonquimay Formed cinder cone of Navidad

  6. Eruptive History -Navidad born 12/25/88 -Lonquimay: major eruption ~100 years before 1988 eruption -Minor volcanic activity: 1853, 1933, 1940

  7. Deposits and Petrology -Black AA lava with black crust -Bombs: ranged from andesitic to basaltic plagioclase, pyroxene, and olivine phenocrysts in andesite -Petrology: mostly andesitic but also basaltic and daciticrocks

  8. Hazards -Cattle and horses died from exposure to ash and fluorine economic consequences -1 human casualty from inhalation of ash -Neurological damage from gases -3,800 people evacuated from homes

  9. Positive Contributions -Nutrients from pyroclastic deposits in soil N, P, K, Mg, Ca Short-lived results

  10. Geophysical Monitoring -1988 eruption: Span of 8 weeks, over 800 earthquakes increasing seismicity.

  11. Tourism -Attracts some hikers -Small ski lift on southern base of Lonquimay

  12. Works Cited Chile. N.d. Photograph. Go Chile. Web. 25 Jan. 2013. Harpp, Karen. "1988-1990 Navidad Eruption." 1988-1990 Navidad Eruption. Colgate University, 2011. Web. 26 Jan. 2013. "Lonquimay." Global Volcanism Program. Smithsonian Institute, n.d. Web. 26 Jan. 2013. "The Lonquimay Volcano." The Lonquimay Volcano. N.p., n.d. Web. 26 Jan. 2013. "Lonquimay Volcano." Volcano Discovery. N.p., n.d. Web. 26 Jan. 2013. Moreno, Teresa, and Wes Gibbons. The Geology of Chile. London: Geological Society, 2007. Print. Mornhinweg, Manfred. The Lonquimay Volcano. N.d. Photograph. Homo Ludens. Web. 25 Jan. 2013. Plate Tectonics. N.d. Photograph. Voyage to the Deep. University of Delaware. Web. 25 Jan. 2013. Seach, John. "Lonquimay Volcano." Volcano Live. N.p., n.d. Web. 26 Jan. 2013. Stevenson, Bill. Image ID: WOS8603 Stock Photo By: Bill Stevenson [bio] License: Royalty Free Read License Agreement Model / Property Release: No (more Info) Image 1 of 5 for Selection: Lonquimay Back to Previous Page VolcanLonquimay And A Farmers Field In The Spring In The Andes Mountains Of Chile In South America. N.d. Photograph. World of Stock, 2013. Web. 27 Jan. 2013.

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