EF3834B9-DC63-4CF7-9E9B-14BEDE58FB2C.jpeg - Volcanic materials products liquid lava(lava flows hot pieces of solid rock pyroclastic material various

EF3834B9-DC63-4CF7-9E9B-14BEDE58FB2C.jpeg - Volcanic...

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Unformatted text preview: Volcanic materials / products . liquid lava (lava flows ) . hot pieces of solid rock ( pyroclastic material ) . various gases (released daring all volcanic eruptions ) - Pyroclastic material : also called tephra; resembles sedimentary rock; if small + sand-sized , it's called volcanic ash; if small and pea-sized, it's referred to as " lapilli; if lange rocks, it's called volcanic bombs . Dark-colored material is called scoria ; light - colored is called pumice - Gases vent out of fumaroles , often poisonous O "Vog" - volcanic smog - composed of sulfurous gases that are released from large volcanoes VOLCANIC HAZARDS . "nuee andente " a French for burning cloud ; when hot material falls back directly onto the volcanic cone + proceeds to avalanche down the slope . Mud flows or lahars - a type of lava flow that moves very fast and can extend tens to hundreds of km away from the volcano . Pahoehoe - smooth + taffy- like; AA a rough + jogge Tapes of Volcanoes - Three Basic Types 1) Cinder Cones - smallest type of volcano; eruption cycle lasts a few decades , and eruptions consist mostly of loose pyro clastic debris and infrequent lava flows...
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  • Fall '10
  • JamesWilkerson

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