PPT-Question from Monday (3/2/15): Can the 1-degree mantle convection that may have formed

Keller and Tackley 2009 Towards selfconsistent modeling of the martian dichotomy The influence of oneridge convection on crustal thickness distribution Icarus 202 429443 The dominant feature of the crustal thickness distribution obtained from oneridge convection in the mantle is a characteristic roughly elliptical shape that shows a striking first order similarity to the shape of the . Earth’s thermal evolution poorly understood. - parameterized models yield contrasting predictions w.r.t. onset of plate tectonics. - possibility of discontinuous transitions. Models of continental growth are widely disparate due to:. Day Lecturer Lectures. 1 BB Introduction. 1 MM Equations of Mantle convection. 2 AM Large-Scale Mantle Convection and Numerical Modeling of it. 4 JA Rotating Fluid Dynamics and Essential Flows in Planetary Cores. Explain the “mantle convection hypothesis”.. Compare and contrast ridge push and slab pull.. 8.3 Causes of Plate Movement. Introduction. 3 major hypotheses describe how tectonic plates move. Mantle convection. Inferred by Seismology. Nozomu. Takeuchi. (ERI, . Univ. of Tokyo). Importance of Directional Measurements. . from geophysicists’ point of view. (2) Improvements of Neutrino Flux Modeling. . Selwyn’s career goal #__: What does the . asthenosphere. have to do with earthquakes, crustal motions, and mantle convection?. Upper crust. Lower crust. Upper mantle. Upper crust. Lower crust. Upper mantle. 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. Explore: p. 672 - 678. Learning Targets. I can use simple models to simulate the forces acting on tectonic plates.. I can compare directions of plate motions with locations of hot spots, spreading ridges, and trenches. 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. a Mantle Anchor Structure. Adam Dziewonski, . Ved. . Lekic. and Barbara Romanowicz . Two main points:. A very large structure at the bottom of the mantle imposes a permanent imprint on the tectonics at the surface. It determines the band in which subduction can occur and regions of high hot-spot activity.. Records of continental growth. Continental crust. Cratonic. mantle. Convecting. mantle. Atmosphere. Two Big Themes. Preservation . vs. Production. Uniformitarianism. . vs. . Catastrophism. Continental Crust. 1 TWTT0 s 10 s -wave reflection profile over ~1,000 km 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.. reconstructions and tectonic implications. Randell . Stephenson et al.. A sub-crustal piercing point for North Atlantic . reconstructions and tectonic implications. Randell . Stephenson et al.. a . “tie” from one conjugate margin to . Lecture . 29. Isochrons. This equation has the form . y = a + bx. .. Plotting the radiogenic isotope ratio against the parent daughter ratio, the intercept with be . R. 0. . and the slope will be . e.