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Class lectures available. http://geology.uprm.edu/cavosie.html. World Lithospheric Plates. Source: After W. Hamilton, U.S. Geological Survey. North American Plate. Caribbean Plate. Source: http://woodshole.er.usgs.gov/project-pages/caribbean/background.htmli.
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Class lectures available http://geology.uprm.edu/cavosie.html
World Lithospheric Plates Source: After W. Hamilton, U.S. Geological Survey.
North American Plate Caribbean Plate Source: http://woodshole.er.usgs.gov/project-pages/caribbean/background.htmli
Source: http://woodshole.er.usgs.gov/project-pages/caribbean/background.html
Source: http://woodshole.er.usgs.gov/project-pages/caribbean/background.html
Hot Spot Volcanism Tectonic plates ‘drift’ over a ‘mantle plume’
Hot spot volcanism: tracking moving plates Midway Island (Pacific Plate) ~ 25 Million years old, 2700 km from Hawaii 2700 km/25 Ma At what rate is the Pacific plate moving?
Plate Tectonics and the Rock Cycle • What drives plate tectonics? • Rock Formation at Plate Boundaries
Mantle Convection Different rocks form in different environments
Source: http://www.gly.fsu.edu/~salters/GLY1000/Chapter4/Chapter4_index.html
Overview • Earthquakes–Basic Theory • Seismic Waves and Earthquake Severity • Earthquake–Related Hazards and Their Reduction • Earthquake Prediction and Forecasting • Earthquake Control? • Awareness, Public Response • Further Thoughts on Modern and Future U.S. Earthquakes
Source: http://www.gly.fsu.edu/~salters/GLY1000/Chapter4/Chapter4_index.html
SeismicWavesandEarthquakeSeverity • Locations faults occur • Types of Faults • Seismic Waves • Locating the Epicenter • Magnitude and Intensity
Source: http://www.gly.fsu.edu/~salters/GLY1000/Chapter4/Chapter4_index.html
Earthquake–Related Hazards and Their Reduction • Ground Motion (shaking) • Influenced by bedrock vs. sediments • Ground Failure (landslides, liquefaction) • Tsunamis and Coastal Effects • Fire
Ground Shaking — Loma Prieta Earthquake Source: R.A. Page et. al., Goals, Opportunities, and Priorities for the USGS Earthquake Hazards Reduction Program, U.S. Geological Survey Circular 1079, p. 7.
Hollow Clay Brick Walls in Iran Source:Photograph by M. Mehrain, Dames and Moore, courtesy of U.S. Geological Survey.
Timber-Frame Buildings in Turkey Source:Photograph by Roger Bilham, courtesy of U.S. Geological Survey.
Landslide from Seattle Earthquake, 1965 Source:Photograph courtesy University of California at Berkeley/NOAA.
Effects of Soil Liquefaction, Japanese Quakes (Nigata), 1964 Source:Photograph courtesy of National Geophysical Data Center.
Sand Boils after Loma Prieta Earthquake Source:Photograph by J. Tinsley, from U.S. Geological Survey Open-File Report 89-687.
Collapse of I-880 1989 Loma Prieta Earthquake Source:Photograph by D. Keefer, from U.S. Geological Survey Open-File Report 89-687.
Marina District Damage from Loma Prieta Quake Source:Photograph by M. Bennette, from U.S. Geological Survey Open-File Report 89-687
Tsunami Damage in Kodiak, Alaska Source:Photograph courtesy of National Geophysical Data Center.
Tsunami Travel Times to Hawaii Source: After U.S. Geological Survey.
Earthquake Prediction and Forecasting • Seismic Gaps • Earthquake Precursors and Prediction • Current Status of Earthquake Prediction • The Earthquake Cycle and Forecasting
California Earthquake Probabilities Map Source: After U.S. Geological Survey Circular 1079, fig, 15, p. 29.