Tectonic History of Western North America and Southern California - A6c
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Uploaded by britoca on Dec 5, 2008
High quality: http://www.youtube.com/watch?v=Q0bccyJuVfQ&fmt=18
An Animated Tectonic History of Western North America and Southern California.
Tanya Atwater, Dept. Geological Sciences, University of California, Santa Barbara, CA
Summary list of QuickTime animations:
A.Pacific-North America Plate Tectonic History (map views)
1. Pacific Hemisphere, 80 Ma to Present
2. N.E. Pacific and W. North America, 38 Ma to Present
3. California, 20 Ma to Present
4. Southern California, 20 Ma to Present
5. Southern California Paleomagnetic Vectors
6. Southern California, Origin and Dispersal of the Poway Conglomerate
B.Geologic History of the Transverse Ranges, Southern California
1. Mesozoic Subduction
2. Miocene: Rifting and rotation, volcanism and deposition in marine basins
3. Plio-Pleistocene: Oblique Shortening against the "Big Bend"
4. Santa Barbara Channel Oil
A.6. Southern California: Southern California, Origin and Dispersal of the Poway Conglomerate
After Pat Abbott, 1999. The Rise and Fall of San Diego, 231 pp.
This illustrates a likely three step scenario for the dispersal of these distinctive rocks. The present day outcrop patterns are strong geological support for the Transverse Ranges rotation.
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