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ABSTRACT:
SUBMITTER: Tarduno JA
PROVIDER: S-EPMC137829 | biostudies-literature | 2002 Oct
REPOSITORIES: biostudies-literature
Tarduno John A JA Cottrell Rory D RD Smirnov Alexei V AV
Proceedings of the National Academy of Sciences of the United States of America 20021018 22
If relationships exist between the frequency of geomagnetic reversals and the morphology, secular variation, and intensity of Earth's magnetic field, they should be best expressed during superchrons, intervals tens of millions of years long lacking reversals. Here we report paleomagnetic and paleointensity data from lavas of the Cretaceous Normal Polarity Superchron that formed at high latitudes near the tangent cylinder that surrounds the solid inner core. The time-averaged field recorded by th ...[more]