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A peat bog in the Jura Mountains, Switzerland, provides a continuous record of peat accumulation since 12 370 14C yr BP. Periods of enhanced soil dust deposition (10 590 14C yr BP, 8230 14C yr BP, and after 5320 14C yr BP) are characterized by strongly elevated Ti/Sc and Zr/Sc ratios which imply an increase in the abundance (both relative and absolute) of heavy minerals such as ilmenite and zircon...
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