CONFERENCE SUMMARY. Compiled by David Beaty, Lars Borg, David Draper, Walter Kiefer, Jim Papike, Kevin Righter, Chip Shearer, Sue Smrekar, Jeff Taylor Correspondence author: Dave Beaty (JPL/Caltech), David.W.Beaty@jpl.nasa.gov , 818-354-7968 CL#12-4839.By helia
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The Mantle Transition Zone: Seismic Properties, Deep Subduction, Earthquakes, and Petrology. Wang-Ping Chen University of Illinois, Urbana-Champaign. [Green, ’01]. Outline. Why the mixture of topics? Forego comprehensive review Work toward an integration, relating these topics
Magmas. Best, Ch. 8. Constitution of Magmas. Hot molten rock T = 700 - 1200 degrees C Composed of ions or complexes Phase Homogeneous Separable part of the system With an interface. Composition. Most components Low vapor pressure Designated by mole fraction (X i )
Petrology. The study of the properties of rocks and the processes behind their formation Recognition and description of rocks Interpretation of their origin and history. Instructor. Michael F. Sheridan email: firstname.lastname@example.org Homepage: http://www.eng.buffalo.edu/~mfs
PETROLOGY. Description of rocks Classification of rocks Theories on how these rocks formed. Crystallize from molten material Magma - below the Earth's surface Lava - erupts onto the Earth's surface through a volcano or crack (fissure)
Petrology - The Study of Rocks. Petrology . Example: Petrified wood = wood turned to rock. At Museum of Natural History the piece in front is 200 Million Years Old . Rock. . What is Rock? Rock = solid made of 1 or more minerals. Polymineralic ? Polymineralic – Many Minerals
PETROLOGY. TOPICS COVERED Igneous rocks Sedimentary rocks Metamorphic rocks TOPIC TO BE COVERED Engineering properties of different types of rocks and its uses Types of engineering tests performed on rocks. GRANITE. GRANITE.
Diversification of magmas. Chapter 12. What happens to a magma once melted? Magmatic differentiation: any process by which a magma changes composition Most common: Crystal-melt fractionation Assimilation of a contaminant Mixing of magmas. Chemical evidence of differentiation
Igneous petrology. Part II – Important igneous associations. Granites (and convergence/collision) Ophiolites (oceanic crust) and MORB (Mid-ocean ridge basalts) Layered igneous complexes (intra-plate, economic importance) Oceanic island basalts (OIB) (intraplate)
Chapter 14, 15, 16, 18. Metamorphic rock: aggregate of minerals; composition and fabric reflect changes to new states to adjust to changes in P, T and X and stress. Parent rock: protolith Metamorphism: path from protolith to final rock. Driving force: increasing P and T