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Some Magnetic Properties of Sediments from Lake Fertő (Neusiedlersee) Region, Austria-Hungary
Abstract This paper presents the results of a magnetic susceptibility and thermomagnetic behaviour study from 6 sediment cores from the Lake Fertő area (Hungary/Austria boundary). These data indicate a very low content of magnetic particles in the sediment, which represents late Holocene. In studied bulk sediment samples we observed four characteristic types of thermomagnetic behaviour. Some of these behaviours indicate chemical transformations of non magnetic iron minerals: siderite and iron and sulphur bearing mineral into magnetite and magnetic iron monosulphide respectively during heating. The observed minerals are independent of lithology, which suggests their post depositional origin related to the anoxic early diagenetic conditions in the sediments. The presence of siderite and iron and sulphur bearing minerals in the sediment can reflect variation in the salinity of waters in the lake and thus can give information about the development of the basin in terms of the hydrological system (relation between evaporation and alimentation) of the lake.
Some Magnetic Properties of Sediments from Lake Fertő (Neusiedlersee) Region, Austria-Hungary
Abstract This paper presents the results of a magnetic susceptibility and thermomagnetic behaviour study from 6 sediment cores from the Lake Fertő area (Hungary/Austria boundary). These data indicate a very low content of magnetic particles in the sediment, which represents late Holocene. In studied bulk sediment samples we observed four characteristic types of thermomagnetic behaviour. Some of these behaviours indicate chemical transformations of non magnetic iron minerals: siderite and iron and sulphur bearing mineral into magnetite and magnetic iron monosulphide respectively during heating. The observed minerals are independent of lithology, which suggests their post depositional origin related to the anoxic early diagenetic conditions in the sediments. The presence of siderite and iron and sulphur bearing minerals in the sediment can reflect variation in the salinity of waters in the lake and thus can give information about the development of the basin in terms of the hydrological system (relation between evaporation and alimentation) of the lake.
Some Magnetic Properties of Sediments from Lake Fertő (Neusiedlersee) Region, Austria-Hungary
Jelinowska, A. (author) / Carvallo, C. (author) / Wesztergom, V. (author) / Tucholka, P. (author) / Menvielle, M. (author) / Szarka, L. (author) / Kohlbeck, F. (author) / Schott, J. J. (author)
2000
Article (Journal)
English
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