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Aids | Grades | Geog/Geol
Dept | UWSP |
|
Home | Calendar
| Course Outline | Announcements
| Syllabus | Study
Aids | Grades | Geog/Geol
Dept | UWSP |
Driving framework: forces trying to change surface characteristics
plate tectonics: part of the driving framework
Resisting framework: forces resisting change; trying to keep surface characteristics the same
earth's composition & structure = resisting framework
CONTINENTAL DRIFT - Alfred Wegener, 1912
similarity of coastlines
continuity of disparite mountain ranges
fossil distributions
Image credit: Kious & Tilling, USGS. This Dynamic Earth: the Story of Plate Tectonics; Historical perspective. http://pubs.usgs.gov/gip/dynamic/continents.html
glacial deposits
Image credit: Kious & Tilling, USGS. This Dynamic Earth: the Story of Plate Tectonics; Historical perspective. http://pubs.usgs.gov/gip/dynamic/historical.htmlNEW EVIDENCE
paleomagnetism
Image modified from: USGS National Magnetism Program. A Brief Introduction to Geomagnetism. http://geomag.usgs.gov/intro.php
Image credit: Kious & Tilling, USGS. This Dynamic Earth: the Story of Plate Tectonics; Developing the theory. http://pubs.usgs.gov/publications/text/developing.html
age of the ocean floor
Image Courtesy of: Windows to the Universe, University Corporation for Atmospheric Research (UCAR). http://www.windows.ucar.edu
Image credit: Peter Sloss, NOAA National Geophysical Data Center, Marine Geology & Geophysics. http://www.ngdc.noaa.gov/mgg/image/crustalimages.html
THEORY OF PLATE TECTONICS
Image credit: Kious & Tilling, USGS. This Dynamic Earth: the Story of Plate Tectonics; Historical Perspective. http://pubs.usgs.gov/gip/dynamic/historical.html
Geographic distribution of earthquakes
Image credit: NASA/Goddard Space Flight Center Scientific Visualization Studio http://svs.gsfc.nasa.gov/vis/a000000/a001200/a001290/
shallow focus: 0-70 km
intermediate focus: 70-300 km
deep focus: 300-670 km
Geographic distribution of active volcanoes
Image credit: USGS Energy Resources Program http://energy.usgs.gov/other/geothermal/geothermal_learn.html
TRANSFORM BOUNDARIES
Image credit: Kious & Tilling, USGS. This Dynamic Earth: the Story of Plate Tectonics; Understanding Plate Motions. http://pubs.usgs.gov/gip/dynamic/understanding.html
shallow focus earthquakes
Image credit: NASA/JPL/NIMA. NASA Visible Earth. San Andreas fault, Palmdale, California. http://visibleearth.nasa.gov/view_rec.php?id=352DIVERGENT BOUNDARIES / RIFT ZONES
Image credit: Kious & Tilling, USGS. This Dynamic Earth: the Story of Plate Tectonics; Understanding Plate Motions. http://pubs.usgs.gov/gip/dynamic/understanding.html
volcanic activity
shallow focus earthquakes
block faulting (normal faults)
Image credit: Kious & Tilling, USGS. This Dynamic Earth: the Story of Plate Tectonics; Understanding Plate Motions. http://pubs.usgs.gov/gip/dynamic/understanding.htmlCONVERGENT BOUNDARIES
subduction zones
deep ocean trenches
volcanic arcs: continental arcs & island arcs
shallow, intermediate & deep focus earthquakes
folding & reverse faults
Image credit: Kious & Tilling, USGS. This Dynamic Earth: the Story of Plate Tectonics; Understanding Plate Motions. http://pubs.usgs.gov/gip/dynamic/understanding.html
Image credit: USGS Earthquake Hazards Program, World Seismicity Maps, Pacific Rim. http://earthquake.usgs.gov/regional/world/seismicity/pac_rim.php
continental collisions
earthquakes
Image credit: USGS Earthquake Hazards Program, World Seismicity Maps, Central Asia. http://earthquake.usgs.gov/regional/world/seismicity/c_asia.php
Slab pull
Ridge push
continental drift evolved into the theory of plate tectonics
scientific theory: overarching framework of ideas that have been widely and repeatedly tested; not idle speculation
sea floor spreading & paleomagnetism
earthquakes & volcanic activity
tectonic plate boundaries
divergent boundaries/rift zones
transform boundaries
convergent boundaries: subduction zones and continental collisions
driving mechanism
