Langila Volcano. Crater 3 is to the right. Image taken in 1970. Courtesy Smithsonian GVP. https://volcano.si.edu/volcano.cfm?vn=252010
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Andesite
All posts tagged Andesite
Historically Active Volcanoes of Alaska. Image courtesy AVO. https://avo.alaska.edu/images/dbimages/display/1258656665_ak6.jpg
Schematic of major volcanic fields and structures in Baja California. Image courtesy All.This.Homework blog. https://allthishomework.wordpress.com/general-education/physical-geography/earthquakes-and-volcanoes/
Anak Krakatau a week following flank collapse eruption Dec. 22. The vent region has not yet been rebuilt above water level. Highest remaining part of the island is the hyaloclastic ring that used to host the most recent cone. Note also the island has been resurfaced and grown a bit. Image courtesy BBC News, Jan. 3 https://www.bbc.com/news/science-environment-46743362https://www.bbc.com/news/science-environment-46743362
Popocatepetl in eruption, July 2013. Photo courtesy Science Times. http://www.isciencetimes.com/articles/5617/20130712/popocatepetl-volcano-erupts-mexico-city-ash.htm
Paricutin volcano, lava flow and buried church. http://www.amusingplanet.com/2014/08/paricutin-volcano-that-grew-out-of.html
Mayon in eruption Jan 23. Photo courtesy Philstar Global. http://www.philstar.com/headlines/2018/01/24/1780930/mayon-volcano-spreads-lava-3-kilometers-crater
Felsite quarry at Mount Ararat (© en.ararat-stone.com)
That’s how I felt at times reading interesting things about volcanoes but had to skip those -ic words. So, I am trying to give you a simple overview on rock types produced by volcanoes… I can already hear the experts groan: omg, “petrology” and “simple” are the two most antagonistic terms in the world! 😉 Nevertheless, I know all too well our typical skip-and-jump motion when it comes to different lavas, just let’s try and achieve a broad understanding about what volcanoes bring up from the depth. Continue Reading
Photo: IGP
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Spica
