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Single-step, laser-fusion 40Ar/39Ar ages of single muscovite grains with an automated micro-extraction system is a precise and relatively rapid way of analyzing large numbers of grains. This study used >500 muscovite grains from a late Wisconsinan sandy loess from eastern Long Island, New York, in order to evaluate the potential of Ar-Ar ages of single grain muscovite as a provenance tool for loess. The samples for dating were from a 2.7 m core of sediments from a small kettle hole in Wildwood State Park on the north shore of Long Island. These eolian deposits consist of a...

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