Geomagnetic Reversals in Quaternary Revealed from a Palaeomagnetic Investigation of Sedimentary Rocks

Abstract

Eight cycles of sedimentary rocks covering approximately the time interval of nearly one million years were investigated by palaeomagnetic methods. The reversal of the field from the reversed to the normal polarity was found at approximately 950, 000 years ago and the detailed course of direction and intensity changes of the geomagnetic field is described. Short temporal field reversals occurred according to our dates even in younger periods. The results offer a new correlation method for geology.