Tectonic History of Western North America and Southern California - B3
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Uploaded by britoca on Dec 5, 2008
High quality: http://www.youtube.com/watch?v=hSPrzdW88ic&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
B.3. Plio-Pleistocene: Oblique Shortening against the "Big Bend"
Since Baja California began to move and collide with southern California, the land has been shortened. The layer cake was faulted and folded and portions of the block were uplifted to form dry land. The dramatic mountainous landscapes that we enjoy today have all been pushed up by this collision and shortening of the land. This collision continues today, uplifting the land, one earthquake at a time.
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Nice one
dawosdawos 3 years ago