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      The relationship between the growth process of the ferromanganese crusts in the pacific seamount and Cenozoic ocean evolvement

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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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            Abrupt deep-sea warming, palaeoceanographic changes and benthic extinctions at the end of the Palaeocene

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              Rapid acidification of the ocean during the Paleocene-Eocene thermal maximum.

              The Paleocene-Eocene thermal maximum (PETM) has been attributed to the rapid release of approximately 2000 x 10(9) metric tons of carbon in the form of methane. In theory, oxidation and ocean absorption of this carbon should have lowered deep-sea pH, thereby triggering a rapid ( 100,000 years). These findings indicate that a large mass of carbon (>2000 x 10(9) metric tons of carbon) dissolved in the ocean at the Paleocene-Eocene boundary and that permanent sequestration of this carbon occurred through silicate weathering feedback.
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                Author and article information

                Journal
                Science in China Series D: Earth Sciences
                Sci. China Ser. D-Earth Sci.
                Springer Science and Business Media LLC
                1006-9313
                1862-2801
                August 2009
                August 4 2009
                August 2009
                : 52
                : 8
                : 1091-1103
                Article
                10.1007/s11430-009-0106-z
                d2042fcc-9bcd-4d9f-a379-011c1c7e45c5
                © 2009

                http://www.springer.com/tdm

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