PPT-Azimuthal anisotropy layering in the Pacific upper mantle

Huaiyu Yuan 123 Scott French 4 and Barbara A Romanowicz 456 1 CCFS EPS Macquarie University Australia 2 CET University of Western Australia Australia. Not useful. for Earth. history. Some definitions. Primordial (or non-radiogenic) noble gases (. 3. He, . 22. Ne, . 36. Ar, . 130. Xe): isotopes not produced on Earth through radioactive decay . Radiogenic noble gases: produced from radioactive decay (. Transition Zone Discontinuities beneath the Contiguous United . States. Stephen . S. . Gao and Kelly . H. Liu. sgao@mst.edu. ; . http://www.mst.edu/~sgao. . Missouri . University of Science and . Technology . Seismology- lecture 5. Barbara Romanowicz, UC Berkeley. CIDER2012, KITP. Seismological tools. Seismic tomography: surface waves, overtones. Volumetric distribution of heterogeneity. “smooth” structure – depth resolution ~50 km. Miles Osmaston. , Woking, UK.. Why do we need a new and versatile MOR model - THREE reasons . MOR structures change a lot with spreading rate (mm/yr). :-. Fast. (EPR 70-150) - straight axes, orthogonal segmentation, smooth flanks. geotherms. *. Don L. Anderson. Because of…. Anharmonicity. , anisotropy, . anelasticity. 2. . Non-linear conductivity (insulation). 3. . Thick boundary layer (seismology). 4. . Secular . cooling (Lord Kelvin). Gautam Sen. Formation of Solar System. Earth’s Internal Layering. Origin of Earth’s Layers. Origin of Layering. Origin of Layering. Plates. Types of Plate Boundaries. Types of Plate Boundaries. Pangaea. An Introduction to Ch 11&12. Regions of the Earth. The Earth is made up predominantly of two major regions:. A predominantly molten, central core. A mostly solid outer mantle and crust. Hydrosphere and Crust . The fundamental abstraction . used to . collect protocols into a unified whole . is known as a . layering model. All aspects of a communication problem can be partitioned . into pieces that work together. Fast axis direction with respect to NA APM. Layered upper mantle. Continuous lines: % Fo (Mg) from. Griffin et al. 2004. Grey: Fo%93. black: Fo%92. LAB and MLD in the craton. Laying shown in both fast axis directions . Shear velocity of olivine. Data from . Kumazawa. & Anderson. [1969]. Seismic Anisotropy . Anisotropy of . Polycrystaline. Rocks. Twin Sisters . Dunite. Babuska. , 1972. Deformation and fabric in mantle rocks. Layering Sarah Skubel & Maria Stutzman Layering A system of vegetative clonal propagation where stems are stimulated to form adventitious roots while still attached to the parent plant How Does it Work? p. otential hotspot. p. otential hotspot. Based on illustration by . Lidunka. . Vočadlo. , University College London. We propose this scenario: . Layered Mantle Convection. Location of the boundary can be adjusted to suit different needs.. Seismology- lecture 5. Barbara Romanowicz, UC Berkeley. CIDER2012, KITP. Seismological tools. Seismic tomography: surface waves, overtones. Volumetric distribution of heterogeneity. “smooth” structure – depth resolution ~50 km. Introduction:. The . present tectonics of Iran has resulted from the continental convergence of the Arabian and Eurasian plates. Our study . area (Fig.1). ,. comprises . a part of this collision zone and consists of an assemblage of distinct lithospheric .