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Magnetic measurements of recent sediments from Big Moose Lake, Adirondack Mountains, N.Y., USA

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Abstract

Measurements of anhysteretic (ARM) and isothermal (IRM) remanences in cores 6 and 8 from Big Moose Lake reveal evidence for changes in magnetic mineralogy and grain size within and between the two cores. It is proposed that changes in the strength and demagnetization characterizations of the IRM reflect the accumulation of atmospherically deposited magnetic minerals resulting from industrial processes. The record of ‘magnetite’ deposition especially in Core 6 parallels that for coal soot at the site. In both cores, the record of ‘haematite’ deposition parallels that for several anthropogenic indicators.

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This is the fourth of a series of papers to be published by this journal which is a contribution of the Paleoecological Investigation of Recent Lake Acidification (PIRLA) project. Drs. D. F. Charles and D. R. Whitehead are guest editors for this series.

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Oldfield, F. Magnetic measurements of recent sediments from Big Moose Lake, Adirondack Mountains, N.Y., USA. J Paleolimnol 4, 93–101 (1990). https://doi.org/10.1007/BF00226319

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  • DOI: https://doi.org/10.1007/BF00226319

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