Climate oscillations and tephrochronology in eastern middle Sweden during the last glacial–interglacial transition

✍ Scribed by Jonas Björck; Stefan Wastegård

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 342 KB
• Volume: 14
• Category: Article
• ISSN: 0267-8179
• DOI: 10.1002/(sici)1099-1417(199908)14:5<399::aid-jqs448>3.0.co;2-r

✦ Synopsis

Two sequences spanning the last glacial-interglacial transition in southern O ¨stergo ¨tland, eastern middle Sweden have been investigated for high-resolution vegetation change and tephrochronology. Organic carbon and pollen analysis indicates that the Younger Dryas-Preboreal climatic transition was characterised by at least one well-defined oscillation or possibly two shorter climatic oscillations. The Vedde Ash (ca. 12 000 GRIP yr BP or ca. 10 300 14 C yr BP) has been identified at both sites, significantly increasing the known distribution of this marker horizon. In addition, a previously unrecorded rhyolitic tephra of Icelandic origin has been identified at ca. 9000 14 C yr BP. The expansion of Corylus into southern O ¨stergo ¨tland is estimated to be ca. 9400 14 C yr BP.