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B151xF08_L04EarthHistory

B151xF08_L04EarthHistory - Georgia Tech School of Biology...

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Biology 1510/1511 Georgia Tech School of Biology Fall 2008 Earth History Major divisions of time Stratigraphy Dating methods and paleomagnetism Continental movement Climate and Oxygen Web Resources UC Museum of Paleontology Historical Geology site at GPC
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Biology 1510/1511 Georgia Tech School of Biology Fall 2008 Geological Time Scale Campbell & Reece, Fig. 25.07 & Tbl. 25.1
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Biology 1510/1511 Georgia Tech School of Biology Fall 2008 Stratigraphy Newer sedimentary rocks form on top of older rocks. Over time, sedimentary rocks can be buried, folded, overturned, and uplifted. Images: http://www.agiweb.org Devonian folded sequence, Alberta CA. © Marli Miller. http://www.agiweb.org Devonian Syncline/Anticline, Wales UK. © Marli Miller. http://www.agiweb.org Recumbent folds in limestone, Switzerland. © Marli Miller. http://www.agiweb.org Folded ribbon chert, Oregon. © Marli Miller. http://www.agiweb.org
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Biology 1510/1511 Georgia Tech School of Biology Fall 2008 Radioactive Decay and Dating Decay of a radioisotope N = N o e - λ t λ = decay constant N = # atoms present
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