PPT-Magma Lab

The Constructive Side of Volcanoes Viscosity Viscosity is the property of matter that allows it to hold its shape or the property that allows it to resists flowing Low Viscosity means that it is more runnythin like water. 1 MagmaticProcessesFrom: Wilson (1989) Igneous Petrogenesis magma density contrastmagma density contrastpooling coalescence in chamberpooling coalescence in chambersolidification into solidification i 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!. Youtube. :. Volcano Eruption – The Eruption of Mount St Helens 1980. 22 minutes. VOLCANOES. . Lithosphere. Side vent. Pipe. Central vent. Lava flows. Dike. Sill. Magma. chamber. Magma, which originates in the asthenosphere.... T. Lebrun. 1. , H. Massol. 1. , E. Chassefière. 1. , A. Davaille. 2. , E. Marcq. 3. , P. Sarda. 1. , F. Leblanc. 3. , G. Brandeis. 4. . 1 . Univ Paris-Sud, Laboratoire IDES, UMR8148, Univ. Paris-Sud, CNRS, Bât. 504, Orsay, F-91405, France;. A rock is a naturally occurring . solid. mixture composed of . minerals. , . smaller rock fragments. , . organic. . material. , or . glass. . The individual particles in a rock are known as . grains. The Constructive Side of Volcanoes. Viscosity. Viscosity is the property of matter that allows it to hold it’s shape (or the property that allows it to resists flowing).. Low Viscosity means that it is more runny/thin (like water).. Magma Oceans in the Inner Solar System Linda T. Elkins- Tanton Magma Oceans Planetecimals accreted first 1.5M.A. of Solar System 1694- Gottfried Wilhelm Leibniz : Suggested Earth began as a uniform liquid and differentiated as it cooled ________________ : the breaking down of rocks on the Earth’s surface _________________: the small pieces are moved from one place to another _________________: the small pieces, or Sediments are deposited, or laid down, Section 2: . Eruptions. K. What I Know. W. What I Want to Find Out. L. What I Learned. Essential Questions. How does magma type influence volcanic activity?. What is the role of pressure and dissolved gases in eruptions?. PU and. . M. ulticore. . A. rchitectures. . Stan Tomov. Research Director. Innovative Computing Laboratory. Department of Computer Science. University of Tennessee, Knoxville. Workshop on GPU-enabled Numerical Libraries. About 1500. Bellringer. Begin volcano video and questions. Objective. Pick one way to trigger a tsunami (1). Include one real life example (1). Describe how a tsunami wave is different from a wind wave (2). GLY 4310 - Spring. , 2020. 2. Magma Series Definition. A group of rocks that share some chemical, and sometimes mineralogical, characteristics. They share patterns on chemical variation diagrams which suggests a genetic relationship – beyond the scope of this course. Magma is a mixture of molten rock, volatiles and solids that is found beneath the surface of the Earth.. In some instances, it solidifies within the crust to form . plutonic rocks. . In others, it erupts onto the Earth’s surface to form . . Main Idea 1. : . Volcanoes look like mountains, but they form as a result of . repeated eruptions. of magma from underground.. Redoubt, AK. Active Volcano. http://www.youtube.com/watch?v=g1UWTwDwZp8.