Volcanoes Not just one type

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Presentation transcript:

Volcanoes Not just one type  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

Composite Cone Mt St Helens - USA Crater Pyroclastic Flow Ash layer The volcano is built up of alternate layers of LAVA and ASH. They can explode with great violence. Crater Pyroclastic Flow Ash layer Dyke Lava Layer Flank eruption Conelet Lava Flow Crust  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

Shield ( Basic) Cone Mauna Loa Hawaii -USA Layers of Lava Lava Flow Shield Volcanoes are enormous features built up only from layers of lava. They produce lots of lava but they tent not to erupt violently. Layers of Lava Lava Flow 10,000m 250 miles Composite volcano to scale  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

Ash and Cinder Cone Paracutin - Mexico Volcanic Bombs Layers of Ash The volcano is built up of layers of ASH. When it erupts it is normally with great explosive force. Volcanic Bombs Layers of Ash and Cinder 3,000m Pipe  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools