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GSCI 100 - Intro Geology
Fort Hays State University
Spring 2011

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Lecture #15

Podcasts: Section A (MWF 9:30am) | Section B (MWF 10:30am)
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Clerical:

  • Homework #5 is posted. It is due on Monday (2/21/11) in class. This will be your third graded homework assignment.
  • Quizzes 5-8 are posted.

    Themes of the Day:

    • Faults (continued from Monday)
    • Earthquake Basics
    • Earthquake Effects
    • Seismic Waves
    • Measuring Quakes

    Faults

    • Brittle deformation - more common shallow in the crust or as a result of high strain rates
    • Joints are fractures that have no offset - "Joints Relieve Stress"
    • Fault Types:

    Fault & Earthquake Terminology

    • Focus (or hypocenter) - point of initial breakage - seismic body waves emanate from the focus
    • Epicenter - point at surface directly above focus - seismic surface waves emanate from the epicenter
    • Fault Scarp - surface breakage on a fault zone

    Earthquake Causes

    Seismic Waves

    Measuring Quakes

    Some Earthquake-Related Websites Worth Surfing

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    GSCI 100 - Intro to Geology
    Dr. Ron Schott, Assistant Professor of Geology
    Fort Hays State University - Geosciences Dept.
    600 Park Street, Hays, KS  67601-4099
    Phone: (785)628-5348  Fax: (785)628-4096
    E-mail: rschott@fhsu.edu
    Web: http://hays.outcrop.org/schott/
    Page content last revised on: 25 February 2011