Maher, Barbara A. and Alekseev, A. and Alekseeva, T. (2002) Variation of soil magnetism across the Russian steppe: its significance for use of soil magnetism as a palaeorainfall proxy. Quaternary Science Reviews, 21 (14-15). pp. 1571-1576. ISSN 0277-3791Full text not available from this repository.
Modern soils across the Chinese Loess Plateau exhibit strong but disputed correlation between their pedogenic magnetic content and annual rainfall. A soil magnetism/rainfall transfer function could provide a quantitative proxy of Quaternary rainfall for this region. However, some argue that â��magnetic dilutionâ��, through spatially varying fluxes of weakly magnetic dust, controls the soil magnetic properties. Here, we test the soil magnetism/rainfall couple by examining 22 Russian steppe soils (free of present dust accumulation) across a climatic transect. From the semi-arid Caspian region to the more humid Caucasus, the soils display systematic increases in topsoil ferrimagnetic concentrations. With the exception of climate (and its co-variant, vegetation), soil-forming factors are essentially constant across this stable area. Hence, the soil magnetic variations dominantly reflect climate and from statistical analysis, principally rainfall. Further, the Russian steppe magnetic/rainfall relationship matches that observed for the Chinese Loess Plateau. These independent data thus substantiate the soil magnetism/rainfall climofunction and, by inference, eliminate â��dust dilutionâ�� as a significant magnetic factor.
|Journal or Publication Title:||Quaternary Science Reviews|
|Uncontrolled Keywords:||soil magnetism ; palaeoclimate proxy ; Holocene ; Quaternary ; palaeorainfall ; modern soils|
|Subjects:||G Geography. Anthropology. Recreation > G Geography (General)|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
|Deposited By:||Professor Barbara A Maher|
|Deposited On:||02 Jan 2007|
|Last Modified:||04 Nov 2015 01:04|
Actions (login required)