Genetic features of volcanic glasses of different composition - PowerPoint PPT Presentation

Dec 09, 2022 •272 likes •456 views

Genetic features of volcanic glasses of different composition Vladislav Petrov vlad243@mail.ru Joint ICTP-IAEA International School on Nuclear Waste Vitrification Abdus Salam International Centre for Theoretical Physics (ICTP) Trieste, Italy

Genetic features of volcanic glasses of different composition Vladislav Petrov vlad243@mail.ru Joint ICTP-IAEA International School on Nuclear Waste Vitrification Abdus Salam International Centre for Theoretical Physics (ICTP) Trieste, Italy 23 - 27 September 2019
VOLCANISM - volcanic Crater eruption and magma Volcanic rocks Thermal Geyser outflow on the Earth’s spring surface Hole Adventive crater Products of volcanism: ► Lava ► Volcanic gases ► Ash ► Volcanic bombs ► Pyroclastic masses Subsurface water Volcanic camera
Negative aspects of volcanism Tolbachic volcano, 2013 Tolbachic volcano, 2015
Volcanic Explosivity Index (VEI) VEI is based on the volume of erupted products (tephra) and the height of the column of ash. Proposed by C.A. Newhall and S. Self (1982) to assess the impact of eruptions on the earth's atmosphere.
Volcanic Explosivity Index and Explosion Types Plinian Hawaiian – calm outflow of lava Vesuvian (vulcanic) – explosive Vesuvian eruption Plinian – powerful eplosive Strombolian eruption of lava with huge volume of ash Hawaiian Peleian – obelisk of viscous lava in the crater
Santorini www.nasa.org 87 Sr/ 86 Sr value of 0.706 is interpreted as border between continental (east) and oceanic (west) lithosphere. YSRP - Yellowstone-Snake River Plain system of volcanoes of acidic composition. V mean ~ 4.5 cm/year during 15 Ma ( Smith et al., 2009 ) Yellowstone www.liveinternet.ru
Morphology of Volcanoes
Products of eruption: Solid (Tephra), Liquid (Lava), Gaseous The solid products of eruption: Volcanic bombs Lapillies Volcanic ash Kariak volcano (view from Avacha volcano) Apocalypse in Mexico: www.pixanews.com
The gaseous products of eruption: • Water vapor • Sulfur dioxide gas • Carbon dioxide gas Fumarole - volcanic gas outlet to the earth's surface: a. Solfatara = fumarole with sulfur dioxide gas b. Mofeta = fumarole with carbon dioxide gas
Liquid products of eruption: Pahoehoe Aa Pillow molten lava viscous lava molten lava in water 50 сm
1_2013_Tolbachik_05-49.mp4 2_2013_Lava and Snow_07-13.mp4 3_2011-2013_TimelapseCamera_05-19.mp4 4_2012-13_Tolbackic_Chaplygin Ilya_11-56.mp4 5_TVC_21-50.mp4
GLASS Dale Chihuly
Thank you for attention!

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