PPT-Continental lithosphere investigations using seismological tools

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. 2 Complete all information requested on the online form available at wwwcontinentaltirepromotionsca or this mail in form accurately and legibly and SURYLGH57347D57347FRS57347RI57347RXU57347UHWDLOHU57526V573475HFHLSW57347WKDW57347FOHDUO57347LQGLFD te According . to Alfred Wegener, the super-continent of Pangea began to break up 200 million years ago with the continents attaining the size, shape, and location where we see them today. This movement of continents has not yet come to an end. According to J. Tuzo Wilson, the breakup and drifting of the present continents . 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. Part I: Dynamic Earth. The Northern Lights / Aurora borealis. Created. . in. . part. . from. . the. . electro. . magnetic. . field. . from. . the. . earth’s. . core. New Area of Focus: Earth’s Plate Boundaries.. Atalay. . Ayele. &. Michelle . Grobbelaar. African Seismological Commission (. AfSC. ). AfSC. was established on January 22, 2014 in Johannesburg, South Africa. Current Office bearers:. President:. Visual Quiz. Quiz Wiz 1-10 Name the boundary.. Word Bank. Divergent Boundaries. Oceanic Oceanic. Continental Continental. Convergent Boundaries. Oceaninc Continental. Oceanic Oceanic. Continental Continental. quiet. .. Homework in your . folder. .. Begin the . quick. . review. . section of your notes.. Raise your . hand. . if you need something.. Quick Review. Each of the following situations illustrates one of Newton’s Laws using the space shuttle. List which one.. : mechanical . boundary . layer,. dry-mostly, stable . for 10. 8. -10. 9. a, possessing a steady-state conductive . geotherm. with base. in . cratons. at . 4-7 . GPa. (170–250 km. ), shallower (ca 100-150km) in off-. . a. . . q. . Kk. Subduction. Continental. Crust. Oceanic. Crust. Accretionary. Prism. Volcanic. Arc. Trench. Rifting. Spreading. Center. Granite. Basalt. The role of . partial melting. Lesson. . Objectives:. To understand what occurs at different plate boundaries.. Success Criteria:. Create an annotated diagram of each plate boundary.. Plate 1. Plate 2. Continental crust. THE WORLD’S MAIN PLATE BOUNDARIES. CONTINENTAL DRIFT THEORY. ALFRED WEGENER . proposed all continents . . originally formed from one landmass . . (PANGEA). EVIDENCE OF CONTINENTAL DRIFT:. . 1. Fossilized tropical plants in Greenland. This presentation contains illustrations from Allen and Allen (2005) . Basins due to lithospheric stretching. -Rifts, failed rifts and passive continental margins. Models of continental extension. Active rifting versus passive rifting. “What are tectonic plates?. Classifying the Layers. There are two ways to classify the layers of the Earth:. Compositional. (Chemical): classifies based on chemical properties (. ie. : elements). Physical. 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 .