ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The normalized Fourier power spectrum of the proportions of normal polarity measurements during the Phanerozoic has been calculated from data compiled by Simpson3 using the timescale of Harland4 (Fig. 1). There are two major components in the spectrum in the vicinity of 300 m.y. and 80 m.y. ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/223283a0
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