Volcanoes - Lesson 5 - Part 2 of 7

Series made in 1976 - Understanding the Earth First part of the hour long show was the segment called Planet of Man series hosted by world renowned Canadian Geophysicist Tuzo Wilson. The series host was Dr. David Pearson English trained, Canadian geologist residing in Sudbury, Ontario. Dr. David Pearson lectured at Laurentian University in Sudbury, Ontario. This Canadian Series was made in 1976 - Understanding the Earth by TV Ontario. This series was part of a extension course at Laurentian, i believe from 1976 to 1986. The entire series was 22 episodes. This series illustrated manual demonstrations in geological process. http://sciencenorth.on.ca/heritagefai... 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