Articles | Volume 12, issue 20
https://doi.org/10.5194/bg-12-5899-2015
https://doi.org/10.5194/bg-12-5899-2015
Research article
 | 
16 Oct 2015
Research article |  | 16 Oct 2015

Stable isotope paleoclimatology of the earliest Eocene using kimberlite-hosted mummified wood from the Canadian Subarctic

B. A. Hook, J. Halfar, Z. Gedalof, J. Bollmann, and D. J. Schulze

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Cited articles

Alton, P. B.: Reduced carbon sequestration in terrestrial ecosystems under overcast skies compared to clear skies, Agr. Forest Meteorol., 148, 1641–1653, 2008.
Anderson, W. T., Bernasconi, S. M., McKenzie, J. A., Saurer, M., and Schweingruber, H. F.: Model evaluation for reconstructing the oxygen isotopic composition in precipitation from tree ring cellulose over the last century, Chem. Geol., 182, 121–137, 2002.
Arens, N. C., Jahren, A. H., and Amundson, R.: Can C3 plants faithfully record the carbon isotopic composition of atmospheric carbon dioxide? Paleobiology, 26, 137–164, 2000.
Ballantyne, A. P., Rybczynski, N., Baker, P. A., Harington, C. R., and White, D.: Pliocene Arctic temperature contraints from the growth rings and isotopic composition of fossil larch, Palaeogeogr. Palaeocl., 242, 188–200, 2006.
Barbour, M. M., Andrews, T. J., and Farquhar, G. D.: Correlations between oxygen isotope ratios of wood constituents of Quercus and Pinus samples from around the world, Aust. J. Plant. Physiol., 28, 335–348, 2001.
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Short summary
The recent discovery of mummified wood (non-petrified) within kimberlite diamond mines in Northwest Territories, Canada, has prompted a paleoclimatic investigation of the time in which the trees grew - the earliest Eocene (ca. 53.3 Ma). Multiple proxy records derived from these samples suggest that during greenhouse climates of the Eocene, subarctic Canada was characterized by high temperatures (+16 C above modern), and multidecadal variability in cloudiness and temperature on 20-30 year cycles.
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