(super 10)Be evidence for the Matuyama-Brunhes geomagnetic reversal in the EPICA dome C ice core
Article Abstract:
The ice at a depth of 3190 m in the Dome C Antarctica is believed to have been deposited around 800,000 years ago based on the basis of ice flow modeling and deuterium signal comparison. However, evidence is presented for 10Be deposition in the ice at 3160-3110m interpreted as a result of the low dipole field strength during the Matuyama-Brunhes geomagnetic reversal which occurred about 780,000 years ago.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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Proterozoic low orbital obliquity and axial-dipolar geomagnetic field from evaporite palaeolatitudes
Article Abstract:
A global palaeomagnetic compilation of the Earth's entire basin-scale evaporite record is described. It is shown that magnetic inclinations are consistent with low orbital obliquity and a geocentric-axial-dipole magnetic field for most of the past 2 billion years and the snowball earth hypothesis accordingly remains the most viable model for low-latitude Proterozoic ice ages.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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Dependence of the duration of geomagnetic polarity reversals on site latitude
Article Abstract:
The factors causing the polarity reversals are analyzed. This reversal occurs due to the Earth's magnetic field caused by the flow in the outer core. The simple geometrical reversal predicted the duration in the reversal of site latitude.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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