Temporal trends of magnetic dissolution in the pelagic realm: Gauging paleoproductivity?

Details Temporal trends of magnetic dissolution in the pelagic realm: Gauging paleoproductivity? Temporal trends of magnetic dissolution in the pelagic realm: Gauging paleoproductivity?

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994e%26psl.123...39t&link_type=abstract

Earth and Planetary Science Letters, Volume 123, Issue 1-3, p. 39-48.

Physics

32

Scientific paper

Magnetic hysteresis data from the western equatorial Pacific suggest that the preservation of magnetic remanence in pelagic carbonates is controlled by paleoproductivity. Hysteresis excursions (100 k.y. intervals) are linked here to greater magnetic dissolution associated with increased glacial organic carbon supply. Changes in the redox boundary coupled to glacial terminations result in anomalous magnetic features which are preserved in the sedimentary record. These high-frequency variations are superimposed on a longer term signal of magnetic dissolution which may reflect decreased productivity since the Miocene.

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