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Geomagnetic palaeointensities during the Cretaceous normal superchron measured using submarine basaltic glass

Naturevolume 366pages238242 (1993) | Download Citation

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Abstract

High-quality palaeointensity data have been obtained from Thellier-Thellier experiments on recent and Cretaceous submarine basaltic glasses. Whereas the recent samples faithfully yield today's geomagnetic intensity at the site, the palaeointensities for the beginning and end of the Cretaceous normal superchron are only 45% and 25%, respectively, of today's value. The data thus extend the 'Mesozoic dipole low' into the Cretaceous superchron, and confirm that submarine basaltic glass is an excellent material for palaeointensity studies.

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    • Thomas Pick
    •  & Lisa Tauxe

    Present address: Fort Hoofddijk Paleomagnetic Laboratory, University of Utrecht, The Netherlands

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  1. Scripps Institution of Oceanography, La Jolla, California, 92093, USA

    • Thomas Pick
    •  & Lisa Tauxe

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https://doi.org/10.1038/366238a0

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