PPT-Volcanism

Ryan Clark The Death of an Active Volcano Topic I simulated an active volcano becoming dormant over a period of time following the complete expulsion of all magma Methods I used PDEs for heat distribution several unique boundary conditions and . Department of Earth and Environmental Sciences Yamagata University 1412 Kojirakawamachi Yamagata 9908560 Japan Department of Natural and Environmental Sciences Akita University 11 Gakuenmachi Tegata Akita 0108502 Japan Corresponding author email ume GeoLines13 (2001)Variscan orogenic wedge propagated generally in E-W direc-tion from central West Sudetes to frontal parts of the KJTaccretionary complex (the JRU) since the pre-Late Devonian toTourna Yellowstone Park is not only spectacular but also unique. It is the result of three volcanic eruptions, the likes of which have never been seen in all of recorded history. The first eruption occurred 2 million years, followed by two more eruptions 1 million years and 600,000 years ago. Below Yellowstone Park there is a hot spot that is generating basaltic magma. At the time of each of their three eruptions, the magma chamber began to produce large volumes of basaltic magma. Because of its low viscosity, the basaltic magma quickly rose to the bottom of the granitic continental crust. However, because the density of basaltic magma (density about 3) is slightly higher than that of granite (density about 2.9) it could not force its way through the granite to the surface. Instead, it began to pool beneath the granitic crust. The amount of heat trapped within the molten basaltic magma was enough to melt the minerals making up the overlaying and surrounding granite, forming a growing mass of granitic magma. Granitic magma is highly viscous and extremely gas-charged. Although it rose only very slowly, the granitic magma advanced upwards by melting even more of its own overlying granitic rock. At some point, radial fractures began to form around the rising mass of granitic magma. These fractures allowed steam eruptions to vent gas. Shortly after, with the overlying granitic rock severely weakened by the fractures, the highly gas-charged granitic magma erupted. The land to a distance of 200 miles in all directions was decimated. Pyroclastic flows, the most destructive eruptive features known, swept across the countryside. Ash fell across the country from the eruption site to the Atlantic Ocean. Ash polluted the world’s atmosphere, blocked the energy of the Sun, and plunged the Northern Hemisphere into a frozen wasteland for years. Can such an eruption occur in the Yellowstone region again? All the evidence suggests that the magma chamber below Yellowstone Park is current rising. According to the director of the Yellowstone Volcanic Observatory, it is not a question of whether or not another super-eruption CAN happen; it’s a question of WHEN it will happen!. Cycle 18: Volcanism & earthquakes. Cycle 19: Plate Tectonics. Cycle 20: Weathering & Erosion. Connection to last unit…. To deeply understand the processes that create rocks and minerals such as volcanism, weathering, . (LVZ) at the top of the . subducting. plate has been detected in a majority of . subduction. zones.. LVZ may be a . hydrated layer of oceanic crust . caused by dehydration reactions as the plate . 1) Mid-ocean ridges-1-2 km thick5) Hypabassal Complexes-water saturated seds, magma-pepperites –found adjacent Composition-&#x 55%;&#x SiO; is;&#x hot;&#x, re;&#xlati;&#xvely;Composition 5 Cryo. -volcanism. Earth’s Interior. Volcano Structure. Earth’s Tectonic Plates. Hawaii and Olympus Mons. Hawaiian Islands. Olympus Mons. Volcanism on Mars. Volcanism on Io. Do Now: How many natural disasters can you name. ?. HW: Article . due Wednesday. Volcanoes are responsible for:. producing . most of the water . on . Earth. .. modifying . the . Earth’s atmosphere.. on rocky and icy planets. Edwin Kite. University of Chicago. Testability. requires linking processes of interest (mineralogical, metabolic, …) to . atmospheric properties . that we can . measure. ; . The Cenozoic Era. Spans the . 65.5 Ma, from the end of the Mesozoic to today.. . There is not agreement in the Earth science community about whether the Cenozoic should be sub-divided into Tertiary and Quaternary or into . Ancient lava flows on the Moon released gases such as CO, S, and H. 2. O. . Their volcanic origin is shown by the presence of distinct flows on the surfaces of the younger regions of lunar . maria. , and by the textures of all mare basalt samples collected during NASA’s Apollo program.. Bro. ž. , P., Hauber, E., Wray, J., Michael, G. (2017) “. Amazonian volcanism inside Valles Marineris on Mars. ”. Earth and Planetary Science Letters,. 473, 122–130. , . doi:. . 10.1016/j.epsl.2017.06.003. A V Zuza CVPage 1of 5 PhDAssistant ProfessorNevada Bureau of Mines and GeologyMackay School of Earth Sciencesand EngineeringUniversity of Nevada Renoazuzaunredu 775682-8752EDUCATIONPhDUniversity of Ca Rebecca J. Thomas*, Dave A. Rothery, Susan J. Conway, Mahesh . Anand. The Open University, U.K.. European Planetary Science Congress 2015. 2. NASA/JHUAPL/CIW, NASA/Caltech. Explosive volcanism & impact structures.