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      The California River and its role in carving Grand Canyon

      Geological Society of America Bulletin
      Geological Society of America

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          Trends, rhythms, and aberrations in global climate 65 Ma to present.

          Since 65 million years ago (Ma), Earth's climate has undergone a significant and complex evolution, the finer details of which are now coming to light through investigations of deep-sea sediment cores. This evolution includes gradual trends of warming and cooling driven by tectonic processes on time scales of 10(5) to 10(7) years, rhythmic or periodic cycles driven by orbital processes with 10(4)- to 10(6)-year cyclicity, and rare rapid aberrant shifts and extreme climate transients with durations of 10(3) to 10(5) years. Here, recent progress in defining the evolution of global climate over the Cenozoic Era is reviewed. We focus primarily on the periodic and anomalous components of variability over the early portion of this era, as constrained by the latest generation of deep-sea isotope records. We also consider how this improved perspective has led to the recognition of previously unforeseen mechanisms for altering climate.
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            Late Jurassic to Eocene evolution of the Cordilleran thrust belt and foreland basin system, western U.S.A.

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              Helium diffusion from apatite: General behavior as illustrated by Durango fluorapatite

              K A Farley (2000)
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                Author and article information

                Journal
                Geological Society of America Bulletin
                Geological Society of America Bulletin
                Geological Society of America
                0016-7606
                1943-2674
                June 03 2011
                January 26 2011
                : 123
                : 7-8
                : 1288-1316
                Article
                10.1130/B30274.1
                4a3481ad-02a3-4996-bb21-788e4662b52f
                © 2011
                History

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