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Information about and photos of the Cascades volcanoes, Mount Saint Helens updates, and volcano monitoring and hazards information.

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Tweets about vulcan.wr.usgs.gov

  • Ablation, eratics, moraines, perfectly plastic solids gotta love glacial terms. #saythemslow ;)
  • The @USGS Cascades Volcano Observatory (Vancouver, WA) ( has 19th C. newspaper clippings!
  • Volcanoes in Washington State.....
  • It can take tens to thousands of years for volcanic materials to break down and weather. The result is some of...
  • “@DCGSGeography: Interesting material on benefits of volcanoes: yr13 energy alternatives- geothermal
  • Interesting material on benefits of volcanoes:
  • Mount St. Helens, Washington – Before, During, and After May 18, 1980 (USGS/Cascades Volcano Observatory)
  • @CIMFAMHOLLAND
  • Yahoo! Image Search: Top Images for vancouver earthquake
  • @Jbmb1John Actually, Here's a better site: Ancient Volcano is "King's Bowl"
  • 4/5 The Salton Buttes are located in the Imperial Valley of southern California, ~165 kilometers ENE of San Diego.
  • How Hot Is A Volcano?
  • Revival is a lot like this:
  • RT @USGS: Think you know something about lava, pyroclastic flows, and lahars? Check out some facts here:
  • RT @RosJordanAJE: I don't. "@USGS: Think you know something about lava, pyroclastic flows, and lahars? Check out some facts here:
  • I don't. "@USGS: Think you know something about lava, pyroclastic flows, and lahars? Check out some facts here:
  • RT @USGS: Energy can be derived from volcanic activity. Website describing it includes cool pic of obsidian flow: #GSEnergy
  • The Plus Side of Volcanoes
  • CVO Menu - America's Volcanic Past - Michigan -
  • The Plus Side of Volcanoes Looks like it has potential but strange nothing has been done since the studies.