1. Natural Disasters By: Patrick L. Abbott

2. Chapter 5 More United States and Canadian Earthquakes

3. Overview zWestern North America: Plate Tectonic- Related Earthquakes zIntraplate Earthquakes: “Stable” Central United States zIntraplate Earthquakes: Eastern United States

4. Overview (cont.) zFracture-Zone Hypothesis of Major Earthquakes zEarthquakes and Volcanism in Hawaii

5. Western North America: Plate Tectonic-Related Earthquakes zPacific Northwest: Oregon, Washington, and British Columbia yPuget Sound, Washington, 1949 and 1965 yFuture Earthquakes in the Washington Region zWestern Great Basin: Eastern California, Western Nevada yOwens Valley, California, 1872 yThe Western Great Basin Seismic Trend

6. Western North America: Plate Tectonic-Related Earthquakes (cont.) zIntermountain Belt: Utah, Idaho, Wyoming, Montana yHebgen Lake, Montana, 1959 yBorah Peak, Idaho, 1983 yThe Intermountain Seismic Belt zRio Grande Rift: New Mexico, Colorado, Westernmost Texas, Mexico

7. Intraplate Earthquakes: “Stable” Central United States zNew Madrid, Missouri, 1811-1812 yEmbayment zReelfoot Rift: Missouri, Arkansas, Tennessee, Kentucky, Illinois zAncient Rifts in the Central United States yFailed Rift

8. Intraplate Earthquakes: Eastern United States zNew England Earthquakes yQuicksand zSt. Lawrence River Valley Earthquakes

9. Fracture-Zone Hypothesis of Major Earthquakes zFracture zones zSeamounts zCharleston, South Carolina, 1886

10. Earthquakes and Volcanism in Hawaii zHarmonic tremors zCharacteristics