Channel Listing of episodes sites.google.com/site/mineguy101/home/lessons This geology course through Laurentian University in Ontario. "Understanding the Earth" originally aired on TVO Ontario in 1975 and rebroadcasted in 1986 Fundamentals of volcanoes - Location of Volcanoes in relation to plates, Products of Volcanoes Planet of Man Series -- Fire Within (30minutes) Starring; Tuzo Wilson -- renowned Canadian geophysicist Planet of Man Series -- Fire Within Lesson 5 -- Part 1 of 7 •Illustration showing a crossection of Europe with respect to plates •Occur at plates are colliding and pulling apart •Vulcan the roman god of fire and earthquakes •Mt Fugi Fire festival in japan "to soothe the restless God" •Illustration showing distribution of volcanoes along the plates •Two plates separate , two plates converge •Roman statesman Pliny the Younger witnessed the eruption of Vesuvius on August 24th, 79 AD •Mt Vesuvius movie footage from a movie of last century 'Kiberia??? accounting the story of the eruption as told by Pliny The Younger Planet of Man Series -- Fire Within Lesson 5 -- Part 2 of 7 •Continued - Mt Vesuvius movie footage from a movie of last century 'Kiberia??? accounting the story of the eruption as told by Pliny The Younger •Cone shaped volcanoes (Vesuvius) are made from converging plates and are characterized by lavas of granitic composition •Violent eruptive in nature, found in mountain belts and island arc areas and the notorious "Ring of Fire" that surrounds the Pacific •2nd type of volcano -- basaltic composition are made from plates pulling apart. •1973 footage of Iceland eruption In 6 days 1/5 the time was lost to the eruption. •Fissure type eruption; Less volatile but some volatility is experienced, lava may spread out over hundreds of square miles of basaltic rock. •Lava leaving fissures underwater •Fresh pillow lava forming underwater •Pillow lavas found on every continent •Columnar basalt •Past evidence of old volcanoes •Ancient pillow lava in NWT • Planet of Man Series -- Fire Within Lesson 5 -- Part 3 of 7 www.youtube.com/watch?v=qIrFUkLQw3w •Pillow lava in NWT deposited from a long distinct lake •Breccia and ash •Badlands of the petrified forest •Dyke and Sill formation •Dyke in NWT •Ancient Basalt eruption on Baffin Island •Bingham Canyon Mine, Utah •3rd type of volcano occurs in the middle of plates "Hot Spots" •Rock composition similar to spreading ridge volcanoes; not violent or explosive •Illustration/ animation of hot spot formation •Hot springs, geysers •Geothermal energy New Zealand Wairakei plant www.nzgeothermal.org.nz/geothermal_energy/nz_geothermal_fields.asp Planet of Man Series -- Fire Within Lesson 5 -- Part 4 of 7 •Geothermal energy New Zealand Wairakei plant www.nzgeothermal.org.nz/geothermal_energy/nz_geothermal_fields.asp Volcanoes -- Interpretation and Fundamentals (30minutes) Host; Dr. David Pearson. Volcanoes - Lesson 5 -- part 5 of 7 •Illustration show main types of extrusive igneous rocks; Basalt, andesite, & rhyolite •5 types in volcano locations along plates •Basalt -- fluid ; Aa and Pahoehoe •Temperature and silica •Basalt erupted at mid-ocean ridges form pillow lava •Pillow lava of NWT footage •Dr Ridler talking about Pillow lava in NWT •Cross-section of pillow lava •Giants Causeway quick cooling of basalt; six sided structure Volcanoes - Lesson 5 -- Part 6 of 7 •Gases dissolved in magma ; gas important to contribution to the early atmosphere and the oceans •Explosive release of gas causes the violence; rocks associated with violent volcanoes; pyroclastic rock , volcanic bombs, Volcanic ash, pumice •NWT shows ancient Precambrian rock, ancient tuff •Cross-section shows why dykes are related to the composition in the rocks •Violence of eruption; very explosive, less explosive •Very explosive -- Composite cone (mt fugi) release of gas, •Caldera -- release an enormous amount of gas •Krakatoa is a Caldera •B&W footage showing Krakatoa mini exposion •Dark material fragmented pumice and ash, steam shown from the heating of the sea water. •Crater lake in Oregon small caldera, •Kilauea another Calera very active volcanic area\ •Footage showing seismology on Kilauea, movement of the magma Volcanoes - Lesson 5 -- Part 7 of 7 •Footage showing seismology on Kilauea, movement of the magma •Harmonic tremor •Volcano swelling on Kilauea -- inflation and deflation •Field observations of fixed points on the volcanoes •Actual observations with a eruption •5 types of volcano formation

Be the first to comment