VOLCANOESTectonics of MagmaMt St Helens BeforeHawaiiKilaueaLow viscosity lavaAsh of Mt St HelensAsh BedVolcanic bombsLava characterKilauea spatter conePahoehoe lavaMtStHelensAsh of Mt. St. HelensMt St Helens AfterSept. 2002PahoehoePahoehoe AAAsh BedbombVolcanic bombsMt HoodFujiyamaParicutinCrater LakeKilauea CalderaShield volcanoShield volcanoCurtain of fireLava fountain from fissureActive Lava TubeParicutinCinder conesCinder coneAsh from ParicutinParicutinSan Juan ParangaricutiroMt EtnaAspects of volcano typesComposite coneRing of fireCascade Volcano eruptionsMt HoodBlasted summit of Mt. St. HelensWhaleback dome in Mt. St. HelensNuee ArdenteMartiniqueLaharCrater LakeCaldera initial stageCaldera final stageValles GrandeFlood basaltFlood basaltFlood basaltDeccan basaltShiprockVolcanic summaryVOLCANOESReading: Chapter 9Pages 249-267Review Questions1, 5, 8, 9, 10, 12Tectonics of Magma• Basaltic magma– From partial melting of mantle– Occurs at oceanic ridges and mantle plumes– More dense: makes oceanic crust• Granitic magma– From melting of crust, with water as flux– Occurs at convergent boundaries– Less dense: makes continental crustMt St Helens Beforehttp://www.ncusd203.org/north/depts/science/slack/mt_helens.htmlHawaiihttp://volcano.und.nodak.edu/vwdocs/volc_images/north_america/hawaii/big_island.htmlKilaueahttp://www.fhvnp.org/albums/seminar_1142006.htmLow viscosity lavahttp://smart.tin.it/domsky/4/fotos-imagenes/immagini/1/2002_07_28_archive.htmlAsh of Mt St HelensAsh Bedhttp://www.wooster.edu/geology/bjordan/ECalPics/ECal.htmlVolcanic bombshttp://volcanoes.usgs.gov/Products/Pglossary/bomb.htmlLava character• Volcanic gas information belowhttp://volcanoes.usgs.gov/Hazards/What/VolGas/volgas.htmlKilauea spatter conehttp://www.billystudio.com/photo_album/Big_Island/Volcano_Park_Slide/pages/Kilauea%20Spatter%20Cone%201984.htmPahoehoe lavahttp://www.doubledeckerpress.com/pahoe.htmMtStHelenshttp://www.geology.mcmail.com/volcanoes.htmAsh of Mt. St. Helenshttp://ve.ou.edu/weaver/st_helens/sthelens.htmMt St Helens Afterhttp://www.ncusd203.org/north/depts/science/slack/mt_helens.htmlSept. 2002Photo credit see http://www.roddyscheer.com/mt_st_helens.htmlVolcanocam see http://www.fs.fed.us/gpnf/volcanocams/msh/Pahoehoehttp://gaia.busanedu.net/~creative/2002/cyber/rock/pages/20651_pahoehoe.htmPahoehoehttp://www.mistermoose.org/rtw/usa/hawaii/pahoehoe.htmlAAhttp://www.windows.ucar.edu/earth/geology/images/aa_pahoehoe_lg.jpghttp://www.wooster.edu/geology/bjordan/ECalPics/ECal.htmlAsh Bedhttp://www.wooster.edu/geology/bjordan/ECalPics/ECal.htmlbombhttp://www.volcanicimages.com/krakatau/krakatau.htmlVolcanic bombshttp://volcanoes.usgs.gov/Products/Pglossary/bomb.htmlMt Hoodhttp://www.geog.utah.edu/~hmiller/photos/Mt_Hood.jpgFujiyamahttp://earth.geol.ksu.edu/sgao/g100tu/plots/1008_composite_volc_Fujiyama.jpgParicutinhttp://www.bol.ucla.edu/~asuarezn/Paricutin_page.htmlCrater LakeKilauea Calderahttp://www.globalgeografia.com/album/oceania.htmShield volcanohttp://volcanoes.usgs.gov/Products/Pglossary/ShieldVolcano.htmlShield volcanohttp://earth.geol.ksu.edu/sgao/g100tu/plots/1008_shield_volc.jpgCurtain of firehttp://www.uhh.hawaii.edu/~csav/gallery/decker/hawaii_curtain_of_fire.phpLava fountain from fissureActive Lava Tubehttp://www.doubledeckerpress.com/skylight.htmParicutinhttp://www.greenville.k12.oh.us/volcano/cindercone.htmlCinder coneshttp://courses.unt.edu/hwilliams/GEOG_3350/examreviews/volcanic_structures.htmCinder coneAsh from Paricutinhttp://www.greenville.k12.oh.us/volcano/cindercone.htmlParicutinhttp://www.bol.ucla.edu/~asuarezn/Paricutin_page.htmlSan Juan Parangaricutirohttp://www.bol.ucla.edu/~asuarezn/Paricutin_page.htmlMt Etnahttp://rst.gsfc.nasa.gov/Sect13/Sect13_4d.htmlAspects of volcano typesComposite conehttp://courses.unt.edu/hwilliams/GEOG_3350/examreviews/volcanic_structures.htmRing of firehttp://pubs.usgs.gov/gip/dynamic/fire.htmlCascade Volcano eruptionshttp://ve.ou.edu/weaver/st_helens/sthelens.htmMt Hoodhttp://www.geog.utah.edu/~hmiller/photos/Mt_Hood.jpgBlasted summit of Mt. St. Helenshttp://ve.ou.edu/weaver/st_helens/sthelens.htmWhaleback dome in Mt. St. Helenshttp://ve.ou.edu/weaver/st_helens/sthelens.htmNuee ArdenteMartiniqueVideo of nuee ardente: http://www.bedford.k12.ny.us/flhs/science/apes/images.htmlhttp://ve.ou.edu/weaver/st_helens/sthelens.htmLaharhttp://ve.ou.edu/weaver/st_helens/sthelens.htmCrater LakeCaldera initial stageCaldera final stagehttp://satftp.soest.hawaii.edu/space/hawaii/nav/ap.kilauea.htmlhttp://hvo.wr.usgs.gov/howwork/subsidence/inflate_deflate.htmlhttp://hvo.wr.usgs.gov/howwork/subsidence/inflate_deflate.htmlhttp://hvo.wr.usgs.gov/howwork/subsidence/inflate_deflate.htmlValles Grandehttp://ve.ou.edu/weaver/votw/valles.htmFlood basaltFlood basalthttp://www.bedford.k12.ny.us/flhs/science/images/floodbasalt.jpgFlood basalthttp://www.gly.uga.edu/railsback/FieldImages/BasaltTwinFalls.jpegDeccan basalthttp://www.accuracyingenesis.com/deccan.htmlShiprockhttp://www.uwosh.edu/faculty_staff/muldoon/51-360/Moes_pics/pages/6B_Ship_Rock_gif.htmVolcanic
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