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Extending the known distribution of the Younger Dryas Vedde Ash into northwestern Russia
Author(s) -
Wastegård Stefan,
Wohlfarth Barbara,
Subetto Dmitry A.,
Sapelko Tatyana V.
Publication year - 2000
Publication title -
journal of quaternary science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.142
H-Index - 94
eISSN - 1099-1417
pISSN - 0267-8179
DOI - 10.1002/1099-1417(200009)15:6<581::aid-jqs558>3.0.co;2-3
Subject(s) - younger dryas , geology , volcanic ash , allerød oscillation , pleistocene , pollen , holocene , paleontology , ecology , volcano , biology
The known distribution of wind‐blown Vedde Ash (ca. 10.3 ka BP) has been extended to the Karelian Isthmus in northwestern Russia. This has been possible as the result of a density separation technique that separates the rhyolitic Vedde Ash shards from the minerogenic host sediment. The Vedde Ash occurs in the middle of a pollen zone with high percentages of, for example, Artemisia and Chenopodiaceae, suggesting that the Younger Dryas (or GS‐I in the GRIP ice‐core event stratigraphy) was cold and dry throughout its duration. This is in agreement with sites in south Sweden where the Vedde Ash also occurs in the middle of a pollen zone dominated by Artemisia , Chenopodiaceae and Cyperaceae. Copyright © 2000 John Wiley & Sons, Ltd.