According to the present study, the carriers of the remanent magnetization are (i) allogenic and synsedimentary and/or early diagenetic authigenic ironbearing minerals of the primary sedimentary siliciclastic and carbonate rocks and (u) alteration products of primary minerals or new authigenic minerals formed during latediagenetic, hydrothermal, or weathering processes.
The slight difference of poles between KU1 and KO1/AN1 may also be due to the low remanent magnetization of rocks, which causes scatter to the data.
7) has been obtained also from Silurian carbonates (diagenetic dolomites) of the Rostla quarry in central Estonia, where the magnetization is carried by magnetite and possibly by maghemite (Plado et al.
The cause for the secondary magnetization could be migration of lowtemperature fluids when Baltica was affected by the post-folding processes of the Hercynian orogeny on its southern margin.
In the July PHYSICAL REVIEW B, Schroeder and his colleagues demonstrate that the interface itself adds to GMR and that the contribution of the interface depends on the orientations of the magnetization in the magnetic layers.
With their technique, called scanning electron microscopy with polarization analysis, they imaged the direction of magnetization along the iron coat as the thickness of the chromium wedge increased from 1 to 60 layers of atoms.
Once the chromium wedge swelled to about 10 layers, the iron magnetization reversed with each new layer added.
When the researchers examined the magnetization of the chromium itself by leaving off the top iron layer, they were quite surprised.
He measured the magnetization of carbonate units in the Silurian Brassfield and Tymochtee Formations exposed in surface quarries.
We collected samples from the cores in order to search for a magnetization that could be associated with an impact.
We studied the magnetization of hematite rich layers of the Silurian Brassfield Formation, collected from cores 3275 (8 samples), 2880 (10 samples), 2881 (6 samples), 2882 (9 samples) and 2626 (3 samples).
A structural or tilt correction is applied by rotating the paleomagnetic vector about the strike of the bedding plane to determine the inclination of the magnetization with respect to bedding.