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Regional Sources of Volcanic Carbon Dioxide and Their Influence on 14C Content of Present-Day Plant Material

Michael Bruns, Ingeborg Levin, K 0 Munnich, H H Hubberten

Abstract


14C measurements were made on present-day plant material with short
integration times (tree leaves and sprouts) in the Eifel area, western Germany, where ancient volcanism produces gaseous emanations of considerable yield. Plants growing
near sources emanating 14C-free CO2 show a significant depletion in the period of their growth. The same effect is found in the 14C content of recent samples from the Thera (Santorini) Archipelago/Greece. This mixing of "dead" CO2 may lead to pseudo ages
in archaeologic or geologic samples of up to 1600 years in samples from the vicinity of C02 emanating sources.

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