Abstract
The Earth’s rotation can change as a result of several internal and external processes, each of which is at a different timescale. Here, we present some possible connections between the Earth’s rotation variations and the geomagnetic reversal frequency rates over the past 120 Myr. In addition, we show the possible relationship between the geomagnetic field reversal frequency and the δ18O oscillations. Because the latter reflects the glacial and interglacial periods, we hypothesize that it can be used as a possible indicator to explain the length of day (LOD) variations and consequently the reversal field frequency over the past 510 Myr. Therefore, our analysis suggests that the relationships between the geomagnetic reversal frequency rates and the Earth’s rotation changes during the Phanerozoic. However, more reversal data are required for periods before the KRS to strengthen the perspective of using the geomagnetic reversal data as a marker for the LOD variations through geological times.
Highlights
The Earth’s rotation can be understood through internal and external processes that act upon the planet
We show the possible relationship between the geomagnetic field reversal frequency and δ18O oscillations
We suggest that the superchrons can be the Earth’s internal markers for length of day (LOD) oscillations through the Phanerozoic
Summary
The Earth’s rotation can change as a result of several internal and external processes, each of which is at a different timescale. We present some possible connections between the Earth’s rotation variations and the geomagnetic reversal frequency rates over the past 120 Myr. In addition, we show the possible relationship between the geomagnetic field reversal frequency and the δ18O oscillations. We show the possible relationship between the geomagnetic field reversal frequency and the δ18O oscillations Because the latter reflects the glacial and interglacial periods, we hypothesize that it can be used as a possible indicator to explain the length of day (LOD) variations and the reversal field frequency over the past 510 Myr. our analysis suggests that the relationships between the geomagnetic reversal frequency rates and the Earth’s rotation changes during the Phanerozoic.
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