Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Formation of ultrafine-grained magnetite in soils.
AU - Maher, Barbara A.
AU - Taylor, Reginald M.
PY - 1988/11/24
Y1 - 1988/11/24
N2 - The magnetic properties of certain soils indicate the widespread presence of ultrafine-grained magnetite, even where there is no detrital input of magnetite. This suggests that in situ formation of magnetite can occur under soil-forming conditions. Schwertmann and Taylor have stated, however, that magnetite has not been found as a newly formed mineral in soils. Here we report the recovery and identification of pure, ultrafine-grained magnetite from some UK soils that have no apparent external sources of magnetite. We consider this magnetite to be of inorganic, in situ origin. The identification of magnetite formation during soil development has significance for studies of iron in soils but also has wider environmental implications. Soil-derived magnetite may contribute to the natural remanent magnetism of sediments, and act as a specific indicator of erosional events.
AB - The magnetic properties of certain soils indicate the widespread presence of ultrafine-grained magnetite, even where there is no detrital input of magnetite. This suggests that in situ formation of magnetite can occur under soil-forming conditions. Schwertmann and Taylor have stated, however, that magnetite has not been found as a newly formed mineral in soils. Here we report the recovery and identification of pure, ultrafine-grained magnetite from some UK soils that have no apparent external sources of magnetite. We consider this magnetite to be of inorganic, in situ origin. The identification of magnetite formation during soil development has significance for studies of iron in soils but also has wider environmental implications. Soil-derived magnetite may contribute to the natural remanent magnetism of sediments, and act as a specific indicator of erosional events.
KW - magnetite
KW - environmental magnetism
KW - soil magnetite
U2 - 10.1038/336368a0
DO - 10.1038/336368a0
M3 - Journal article
VL - 336
SP - 368
EP - 370
JO - Nature
JF - Nature
SN - 0028-0836
IS - 6197
ER -