A summertime rainy season in the Arctic forests of the Eocene

Geology

Volumn 40, Issue 6, 2012, Pages 523-526

  Schubert, Brian A ^a   Jahren, A Hope ^a   Eberle, Jaelyn J ^b   Sternberg, Leonel S L ^c   Eberth, David A ^d  

^a UNIVERSITY OF HAWAII   (United States)

^b UNIVERSITY OF COLORADO   (United States)

^c University of Miami   (United States)

^d ROYAL TYRRELL MUSEUM OF PALAEONTOLOGY   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

ARCTIC CIRCLE; CARBON ISOTOPES; CLIMATE CONDITION; FOSSIL WOODS; HIGH RESOLUTION; NEW RESULTS; PALEOBOTANICAL; PALEOPRECIPITATION; RAINY SEASONS; SEASONALITY; SUMMER PRECIPITATION; TEMPERATE FORESTS; WINTER PRECIPITATION;

ISOTOPES;

FORESTRY;

ARCTIC ENVIRONMENT; CARBON ISOTOPE; EOCENE; FOSSIL; PALEOCLIMATE; PRECIPITATION (CLIMATOLOGY); PROXY CLIMATE RECORD; RAINFALL;

CLIMATES; FORESTRY; FORESTS; ISOTOPES; PRECIPITATION;

EID: 84864317412     PISSN: 00917613     EISSN: 19432682     Source Type: Journal    
DOI: 10.1130/G32856.1     Document Type: Article

References (32)

1. 2 cloud radiative forcing feedback over both land and ocean in a global climate model: Geophysical Research Letters, v. 36, L05702, doi:10.1029/2008GL036703.
2. 18O of cellulose from growth rings of Pinus radiata: Plant, Cell & Environment, v. 25, p. 1483-1499, doi:10.1046/j.0016-8025.2002.00931.x.
3. Barke, J., Abels, H.A., Sangiorgi, F., Greenwood, D.R., Sweet, A.R., Donders, T., Reichart, G.-J., Lotter, A.F., and Brinkhuis, H., 2011, Orbitally forced Azolla blooms and Middle Eocene Arctic hydrology: Clues from palynology: Geology, v. 39, p. 427-430, doi:10.1130/G31640.1.
4. Basinger, J.F., 1991, The fossil forests of the Buchanan Lake Formation (early Tertiary), Axel Heiberg Island, Canadian Arctic archipelago: Preliminary floristics and paleoclimate, in Christie, R.L., and McMillan, N.J., eds., Tertiary fossil forests of the Geodetic Hills, Axel Heiberg Island, Arctic Archipelago: Geological Survey of Canada Bulletin 403, p. 39-65.
5. Basinger, J.F., Greenwood, D.R., and Sweda, T., 1994, Early Tertiary vegetation of Arctic Canada and its relevance to paleoclimatic interpretation, in Boulter, M.C., and Fisher, H.C., eds., Cenozoic plants and climates of the Arctic: Berlin, Springer-Verlag, p. 175-198.
6. Brinkhuis, H., Schouten, S., Collinson, M.E., Sluijs, A., Damsté, J.S.S., Dickens, G.R., Huber, M., Cronin, T.M., Onodera, J., Takahashi, K., Bujak, J.P., Stein, R., van der Burgh, J., Eldrett, J.S., Harding, I.C., Lotter, A.F., Sangiorgi, F., Cittert, H.V.V., de Leeuw, J.W., Matthiessen, J., Backman, J., and Moran, K., and the Expedition 302 Scientists, 2006, Episodic fresh surface waters in the Eocene Arctic Ocean: Nature, v. 441, p. 606-609, doi:10.1038/nature04692.
7. Eberle, J.J., and McKenna, M.C., 2002, Early Eocene Leptictida, Pantolesta, Creodonta, Carnivora, and Mesonychidae (Mammalia) from the Eureka Sound Group, Ellesmere Island, Nunavut: Canadian Journal of Earth Sciences, v. 39, p. 899-910, doi:10.1139/e02-001.
8. Eberle, J., Fricke, H., and Humphrey, J., 2009, Lower-latitude mammals as year-round residents in Eocene Arctic forests: Geology, v. 37, p. 499-502, doi:10.1130/G25633A.1.
9. Eberle, J.J., Fricke, H.C., Humphrey, J.D., Hackett, L., Newbrey, M.G., and Hutchison, J.H., 2010, Seasonal variability in Arctic temperatures during early Eocene time: Earth and Planetary Science Letters, v. 296, p. 481-486, doi:10.1016/j.epsl.2010.06.005.
10. Environment Canada, 2011, National Climate Data and Information Archive: http://climate.weatheroffice.gc.ca (December 2011).
11. Estes, R., and Hutchison, J.H., 1980, Eocene lower vertebrates from Ellesmere Island, Canadian Arctic Archipelago: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 30, p. 325-347, doi:10.1016/0031-0182(80)90064-4.
12. GEOMAR, 2011, Ocean Drilling Stratigraphic Network Plate Tectonic Reconstruction Service: http://www.odsn.de/odsn/services/paleomap/paleomap.html (December 2011).
13. Greenwood, D.R., Basinger, J.F., and Smith, R.Y., 2010, How wet was the Arctic Eocene rain forest? Estimates of precipitation from Paleogene Arctic macrofloras: Geology, v. 38, p. 15-18, doi:10.1130/G30218.1.
14. Harrington, G.J., Eberle, J., LePage, B.A., Dawson, M., and Hutchison, J.H., 2011, Arctic plant diversity in the Early Eocene greenhouse: Proceedings of the Royal Society, ser. B, doi:10.1098/rspb.2011.1704.
15. 12C variations in tree rings from novel intra-seasonal studies on broad-leaf trees: Plant, Cell & Environment, v. 27, p. 367-380, doi:10.1111/j.0016-8025.2003.01159.x.
16. Herman, A.B., and Spicer, R.A., 2010, Mid-Cretaceous floras and climate of the Russian high Arctic (Novosibirsk Islands, Northern Yakutiya): Palaeogeography, Palaeoclimatology, Palaeoecology, v. 295, p. 409-422, doi:10.1016/j.palaeo.2010.02.034.
17. Irving, E., and Wynne, P.J., 1991, The paleolatitude of the Eocene fossil forests of Arctic Canada, in Christie, R.L., and McMillan, N.J., eds., Tertiary fossil forests of the Geodetic Hills, Axel Heiberg Island, Arctic Archipelago: Geological Survey of Canada Bulletin 403, p. 209-211.
18. Jahren, A.H., 2007, The Arctic forest of the middle Eocene: Annual Review of Earth and Planetary Sciences, v. 35, p. 509-540, doi:10.1146/annurev.earth.35.031306.140125.
19. Jahren, A.H., and Sternberg, L.S.L., 2003, Humidity estimate for the middle Eocene Arctic rain forest: Geology, v. 31, p. 463-466, doi:10.1130/0091 -7613(2003)031<0463:HEFTME>2.0.CO;2.
20. Jahren, A.H., and Sternberg, L.S.L., 2008, Annual patterns within tree rings of the Arctic middle Eocene (ca. 45 Ma): Isotopic signatures of precipitation, relative humidity, and deciduousness: Geology, v. 36, p. 99-102, doi:10.1130/G23876A.1.
21. Kalgutkar, R.M., and McIntyre, D.J., 1991, Helicosporous fungi and Early Eocene pollen, Eureka Sound Group, Axel Heiberg Island, Northwest Territories: Canadian Journal of Earth Sciences, v. 28, p. 364-371, doi:10.1139/e91-033.
22. 2 with the terrestrial biosphere and oceans from 1978 to 2000. I. Global aspects: San Diego, Scripps Institution of Oceanography, SIO Reference Series, 88 p.
23. Korea Meteorological Administration, 2011, 30-year average climate data: http://www.kma.go.kr/weather/climate/average_30years.jsp?yy_st=2011&stn=159 &norm=M&x=33&y=16&obs=0&mm=5&dd=27 (January 28-February 25, 2011).
24. Leavitt, S.W., and Long, A., 1991, Seasonal stable-carbon isotope variability in tree rings: Possible paleoenvironmental signals: Chemical Geology (Isotope Geoscience Section), v. 87, p. 59-70.
25. Markwick, P.J., 1998, Fossil crocodilians as indicators of Late Cretaceous and Cenozoic climates: Implications for using palaeontological data in reconstructing palaeoclimate: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 137, p. 205-271, doi:10.1016/S0031-0182(97)00108-9.
26. McIntyre, D.J., 1991, Pollen and spore flora of an Eocene forest, eastern Axel Heiberg Island, N.W.T., in Christie, R.L., and McMillan, N.J., eds., Tertiary fossil forests of the Geodetic Hills, Axel Heiberg Island, Arctic Archipelago: Geological Survey of Canada Bulletin 403, p. 83-97.
27. McIver, E.E., and Basinger, J.F., 1999, Early Tertiary floral evolution in the Canadian High Arctic: Annals of the Missouri Botanical Garden, v. 86, p. 523- 545, doi:10.2307/2666184.
28. NOAA Climate Services, 2011, Monthly surface data: http://gis.ncdc.noaa.gov/map/monthly (December 2011).
29. Pons, T.L., and Helle, G., 2011, Identification of anatomically non-distinct annual rings in tropical trees using stable isotopes: Trees-Structure and Function, v. 25, p. 83-93, doi:10.1007/s00468-010-0527-5.
30. Schubert, B.A., and Jahren, A.H., 2011, Quantifying seasonal precipitation using high-resolution carbon isotope analyses in evergreen wood: Geochimica et Cosmochimica Acta, v. 75, p. 7291-7303, doi:10.1016/j.gca.2011.08.002.
31. Western Regional Climate Center, 2011, Western U.S. Climate Historical Summaries: Period of record monthly climate summary: http://www.wrcc.dri.edu/climsum.html (January 28-February 25, 2011).
32. Williams, C.J., Johnson, A.H., LePage, B.A., Vann, D.R., and Sweda, T., 2003, Reconstruction of Tertiary Metasequoia forests. II. Structure, biomass, and productivity of Eocene floodplain forests in the Canadian Arctic: Paleobiology, v. 29, p. 271-292, doi:10.1666/0094-8373(2003)029<0271:ROTMFI>2.0.CO;2.