Central and South American Volcanos

  • Thread starter Astronuc
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In summary: I heard the plate that has caused the Rockies to rise from the sea is used up now and changes that occurred in the past have stopped. There are a lot of "dead" volcanoes in California as a... consequence.There is a lot of data on volcanoes and their effects on the weather, but it is difficult to gather because it is so variable.Volcanology is a very complex and constantly evolving field.
  • #36
Guatemala's Santiaguito (adjacent to Santa Maria) volcano is erupting.
http://www.wired.com/2016/08/anatomy-volcanic-blast-guatemalas-santiaguito/
http://www.insivumeh.gob.gt/volcansantiaguito.html

http://volcano.si.edu/volcano.cfm?vn=342030

http://www.geo.mtu.edu/~raman/VSantiaguito/VSantiaguito/Welcome.html

https://en.wikipedia.org/wiki/Santa_María_(volcano)
The VEI 6 eruption of Santa María Volcano in 1902 was one of the three largest eruptions of the 20th century, after the 1912 Novarupta and 1991 Pinatubo eruptions.
 
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  • #37
150,000 people within 10 km, I see that one has a history of explosive eruptions, hope it doesn't do a repeat of the 1902 event. (this reminds me of a St. Helen's type mountain)
From the Smithsonian site.
Volcano types:
Stratovolcano
Lava dome Summit Elev: 3772 m
Latitude: 14.756°N
Longitude: 91.552°W
Symmetrical, forest-covered Santa María volcano is one of the most prominent of a chain of large stratovolcanoes that rises dramatically above the Pacific coastal plain of Guatemala. The 3772-m-high stratovolcano has a sharp-topped, conical profile that is cut on the SW flank by a large, 1.5-km-wide crater. The oval-shaped crater extends from just below the summit of Volcán Santa María to the lower flank and was formed during a catastrophic eruption in 1902. The renowned plinian eruption of 1902 that devastated much of SW Guatemala followed a long repose period after construction of the large basaltic-andesite stratovolcano. The massive dacitic Santiaguito lava-dome complex has been growing at the base of the 1902 crater since 1922. Compound dome growth at Santiaguito has occurred episodically from four westward-younging vents, the most recent of which is Caliente. Dome growth has been accompanied by almost continuous minor explosions, with periodic lava extrusion, larger explosions, pyroclastic flows, and lahars.
 
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