Multiproxy evidence of an early Holocene (8.2 kyr) climate oscillation in central Nova Scotia, Canada
Article first published online: 7 NOV 2002
Copyright © 2002 John Wiley & Sons, Ltd.
Journal of Quaternary Science
Volume 17, Issue 7, pages 639–645, October 2002
How to Cite
Spooner, I., Douglas, M. S. V. and Terrusi, L. (2002), Multiproxy evidence of an early Holocene (8.2 kyr) climate oscillation in central Nova Scotia, Canada. J. Quaternary Sci., 17: 639–645. doi: 10.1002/jqs.716
- Issue published online: 7 NOV 2002
- Article first published online: 7 NOV 2002
- NSERC (Canada).
- 8.2 kyr event;
- climate change;
- Nova Scotia;
An early Holocene lake sediment record from central Nova Scotia contains a minerogenic oscillation that is closely correlative with the 8.2 kyr event (ca. 8200 cal. yr BP), an event that has not been reported elsewhere in Atlantic Canada. A variety of biological and sedimentological indicators have been examined to characterise autochthonous and allochthonous changes that occurred during this time. The minerogenic upper oscillation (UO, ca. 8400 cal. yr BP) is marked by an increase in the chrysophyte:diatom ratio. Following the oscillation, the diatom community reflects a shift to more productive, less acidic conditions. The pollen record shows no major response to this short-lived event. Lithostratigraphic analyses indicates that the UO is characterised by an increase in clastic content, magnetic susceptibility and mean sediment grain size, all indicators of changing environmental conditions, most likely the result of regional cooling. The Taylor Lake record adds to a growing body of evidence for a widespread, hemispheric climate oscillation at 8.2 kyr. Copyright © 2002 John Wiley & Sons, Ltd.