Magnetic investigations of sediment cores from the region of the Great Meteor Seamount

Investigations of 12 deep-sea cores were carried out by nondestructive measurements of the material taken in plastic tubes. The stability of the magnetization was proved with 3 core parts by means of demagnetization. In two cores geomagnetic reversals were ascertained facilitating the determination of the rate of sedimentation. One reversal was investigated in detail. It was possible to observe a rotation of the horizontal magnetic-field component at steps of 1,300 years. In further 6 cores it was found that a correlation with the remanence was well possible. Based on these results obtained the sediments in the surroundings of the Meteor Seamount may be ascribed to three typical regions. The most considerable disturbances in sedimentation exist in the area south-west of the seamount. In the interpretation it is assumed that the non-carbonatic fractions of the sediments come from this region and are transported into the sediment by marine currents