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Variations of the Earth's Magnetic Field in the Phanerozoic
Schreider, A.A.; Schreider, A.A.; Varga, P.; Denis, C. (2011). Variations of the Earth's Magnetic Field in the Phanerozoic. Oceanology 51(3): 506-510.
In: Oceanology. Maik Nauka/Springer: Moscow. ISSN 0001-4370; e-ISSN 1531-8508, more
Peer reviewed article  

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  • Schreider, A.A.
  • Schreider, A.A.
  • Varga, P.
  • Denis, C., more

    The global VDM database, which was later supplemented by new determinations published in the world literature (a total of 3194 determinations), is used as the basis for addressing the VDM behavior in the Phanerozoic (0–542 Ma) and up to 580 Ma. The results revealed a positive linear trend to higher VDM values from 3.5 × l022 Am2 to 5.7 × l022 Am2. Against this background, fluctuations of the mean VDMs occur with a periodicity of about 40 Myr. In the Phanerozoic, prominent minima of the intensity are found in the time intervals of 510–520, 420–460, 340–370, 290–300, 240–270, 190–210, 165–140 Ma (chrons M17–M43), 130–120 Ma (chrons M2–M10), 100–110 Ma (chron C34), 75–85 Ma (chrons C33 and the beginning of chron C34), 70–60 Ma (chrons C31–C27), and 40–15 Ma (chrons C18–C5AD). The distribution of the VDMs appears to reflect the paleomagnetic field behavior and may be taken into account in a magnetization model for the reversely magnetized oceanic crust.

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