10Be evidence for geochemical events in the North Pacific during the Pliocene

Details 10Be evidence for geochemical events in the North Pacific during the Pliocene 10Be evidence for geochemical events in the North Pacific during the Pliocene

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980e%26psl..49...34t&link_type=abstract

Earth and Planetary Science Letters, Volume 49, Issue 1, p. 34-38.

Physics

2

Scientific paper

The 10Be, geochemistry and sedimentology in the two North Pacific cores have been investigated. A sharp drop in 10Be concentration has been found in both cores at around 3 m.y. B.P. This corresponds to sharp changes in the transition metal and rare earth element concentrations. The 10Be discontinuity can be interpreted as a hiatus in sediment accumulation of about 5 m.y. Alternatively, it may be due to changes in the scavenging efficiency of 10Be as a function of time related to at present unknown ocean bottom processes.

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