High resolution 230Thex stratigraphy of sediments from high-latitude areas (Norwegian Sea, Fram Strait)

Details High resolution 230Thex stratigraphy of sediments from high-latitude areas (Norwegian Sea, Fram Strait) High resolution 230Thex stratigraphy of sediments from high-latitude areas (Norwegian Sea, Fram Strait)

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990e%26psl.101...54s&link_type=abstract

Earth and Planetary Science Letters, Volume 101, Issue 1, p. 54-62.

Physics

7

Scientific paper

We present data on the average sedimentation rates (ranging from 1.6 cm/kyr to 3 cm/kyr) for the last 300.000 years based on δ18O analyses of foraminifera in a core from the Norwegian Sea and 230Thex measurements in cores from the Norwegian Sea and the Fram Strait (Arctic Ocean). Furthermore, we relate 230Thex variations downcore to the various oxygen isotope stages. This correlation is tentatively interpreted as being a result of the paleoceanographic and paleoclimatic control of bioproductivity. It is shown that based on the average sedimentation rates and characteristic 230Thex variations carbonate-poor sediment cores from northern latitudes can be correlated.

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