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ESS15_LEC9F10_CalTec - 1 • Lecture 9 California tectonics marine sediment Radiolaria tests Randolph Femmer Nat’l Biological Information

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Unformatted text preview: 1 • Lecture 9: California tectonics, marine sediment Radiolaria tests, Randolph Femmer, Nat’l Biological Information Infrastructure, Public Domain, http://life.nbii.gov/dml/categories.do?id=50142&pt=l2 Introduction to Oceanography Introduction to Oceanography •1st Midterm held in class, Friday Oct. 22 •Midterm review session to be announced (Oct. 20 or 21) •Extra Credit video screening (Oct. 22 or Oct. 25) Sediment scraped off of oceanic crust at trench, Nankai, Japan. Moore et al. (2007) Three-Dimensional Splay Fault Geometry and Implications for Tsunami Generation. Science v. 318, p. 1128-1131. 2 Paleogeographic reconstruction Paleogeographic Atlas Project, Ziegler et al., U. Chicago, http://www.geo.arizona.edu/~rees/global290-0pgeogrev.mov Regional & Local Tectonics of California MOVIES (Prof. Tanya Atwater, UCSB): http://emvc.geol.ucsb.edu/downloads.php#RegionalTectGeolHist Sierra Nevada Central Valley Coast Ranges S a n A n d r e a s F a u l t Image USGS, Public Domain, http://earthguide.ucsd.edu/ earthguide/maps/reliefmapca.html Salton Trough 3 Pacific Plate Evolution Easternmost Pacific Plate Evolution 4 Southern CA Evolution Coast Ranges & Central Valley • Between subduction zone and the Sierras T. Atwater, UCSB, http://emvc.geol.ucsb.edu/downloads.php 5 Coast Ranges & Central Valley • Between subduction zone and the Sierras National Park Service (?) Figure, Presumed Public Domain, http://clasticdetritus.files.wordpress.com/2008/02/subduct-nps.jpg The Sierra Nevada Zeimusu, Wikimedia Commons CC A S-A 1.0, http://commons.wikimedia.org/wiki/File:Mount_Whitney_2003-03-25.jpg 6 Coast Ranges (scraped off the Farallon Plate) Glen Canyon Park, San Francisco. Eric A Schiff, Wikimedia Commons CC A S-A 2.5, http://en.wikipedia.org/wiki/File:Glen_Canyon_Park_Chert_Outcrop.jpg Sierra Nevada Central Valley Coast Ranges Image USGS, Public Domain, http://earthguide.ucsd.edu/ earthguide/maps/reliefmapca.html Central Valley and Sierra Nevada, and rocks in the Coast Ranges are leftovers from the old convergent boundary (> 30 Million years ago) 7 San Andreas: A transform boundary San Andreas forms a complex web of faults, including many in LA region Produces regions of tension and compression between active fault segments Leads to Transpressional ranges (Santa Monica Mtns.) Pull-apart basins (LA Basin, Death Valley, Salton Sea) Young features (< 30 Million years) San Andreas, Salton Sea, Gulf of California, Santa Monica Mtns....
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This note was uploaded on 12/01/2010 for the course GEOG ESS15 taught by Professor Aurnou during the Fall '10 term at UCLA.

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ESS15_LEC9F10_CalTec - 1 • Lecture 9 California tectonics marine sediment Radiolaria tests Randolph Femmer Nat’l Biological Information

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