Imaging distribution patterns of magnetic minerals by a novel high-Tc-SQUID-based field distribution measuring system: application to Permian sediments |
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| Authors: | Norbert Nowaczyk,Horst-Ulrich Worm,rea Knecht,& Johann Hinken |
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| Affiliation: | GeoForschungsZentrum Potsdam, Projektbereich 3.3, Laboratory for Palaeo- and Rock Magnetism, Telegrafenberg, D-14473 Potsdam, Germany. E-mail:;, Institut für Geophysik, Universität Göttingen, Herzberger Landstr. 180, 37075 Göttingen, Germany,;F.I.T. Messtechnik GmbH, Postfach 1147, D-31158 Bad Salzdetfurth, Germany |
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| Abstract: | A newly developed field distribution measuring system based on a high- T c SQUID has been employed in the study of magnetic mineral distribution in several Permian sedimentary rocks. The instrument consists of a small, 1.4×1.4 mm sized YBaCu-oxide SQUID magnetic field sensor that is operated in a thin-walled dewar, so that the sample's surface, at room temperature, can be scanned at a distance of only ∼1.5 mm. The samples were subjected to a saturation remanence perpendicular to the surface and the scanning measurements in zero field reveal that the magnetization might be carried by only a small part of a sample, in one case associated with secondary oxide phases. High-resolution magnetic scans can aid in the interpretation of the magnetic remanence acquisition process. |
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| Keywords: | high-temperature SQUID remanent magnetization |
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