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Late Pleistocene and Holocene Seasonal Temperatures Reconstructed from Fossil Beetle Assemblages in the Rocky Mountains

Published online by Cambridge University Press:  20 January 2017

Scott A. Elias
Scott A. Elias*
Affiliation:
Institute of Arctic and Alpine Research, Campus Box 450, University of Colorado, Boulder, Colorado, 80309-0450
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Abstract

Mutual Climatic Range (MCR) analysis was applied to 20 fossil beetle assemblages from 11 sites dating from 14,500 to 400 yr B.P. The fossil sites represent a transect of the Rocky Mountain region from northern Montana to central Colorado. The analyses yielded estimates of mean July and mean January temperatures. The oldest assemblage (14,500 yr B.P.) yielded mean July values of 10–11°C colder than present and mean January values 26–30°C colder than present. Postglacial summer warming was rapid, as indicated by an assemblage dating 13,200 yr B.P., with mean July values only 3–4°C cooler than modern. By 10,000 yr B.P., several assemblages indicate warmer-than-modern mean summer and winter values. By 9000 yr B.P., MCR reconstructions indicate that both summer and winter temperatures were already declining from an early Holocene peak. Mean July values remained above modern levels and mean January values remained below modern levels until 3000 yr B.P. A series of small-scale oscillations followed.

Type
Research Article
Information
Quaternary Research , Volume 46 , Issue 3 , November 1996 , pp. 311 - 318
Copyright
University of Washington

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References

Atkinson, T.C., Briffa, K.R., and Coope, G. R., (1987). Seasonal temperatures in Britain during the last 22,000 years, reconstructed using beetle remains. Nature 325, 587–592.Google Scholar
Antevs, E., (1948). Climatic changes and pre-white man. University of Utah Bulletin 38, 168–191.Google Scholar
Bartlein, P.J., Lipsitz, B., and Thompson, R. S., (1994). Modern climate data for paleoenvironmental interpretation. American Quaternary Association, 13th Biennial Meeting Program and Abstracts, p. 197.Google Scholar
Benedict, J. B., (1979). Getting away from it all: A study of man, mountains and the two-drought altithermal. Southwestern Lore 45, 1–12.Google Scholar
Berger, A. L., (1978). Long-term variations in caloric insolation resulting from the earth's orbital elements. Quaternary Research 9, 139–167.CrossRefGoogle Scholar
Bonnichsen, R., (1985). High-altitude adaptation at False Cougar Cave. National Geographic Society Research Report 20, 27–40.Google Scholar
Bonnichsen, R., Graham, R.W., Geppert, T., and Oliver, J. S., (1986). False Cougar and Shield Trap Caves, Pryor Mountains, Montana. National Geographic Research 2, 276–290.Google Scholar
Brunstein, F.C., and Yamaguchi, D. K., (1992). The oldest known Rocky Mountain bristlecone pines (Pinus aristata Egelm.). Arctic and Alpine Research 24, 253–256.CrossRefGoogle Scholar
Carrara, P. E., (1987). Holocene and latest Pleistocene glacial chronology Glacier National Park Montana. Canadian Journal of Earth Sciences 24, 387–395.Google Scholar
Carrara, P. E., (1995). A 12000 year radiocarbon date of deglaciation from the Continental Divide of northwestern Montana. Canadian Journal of Earth Sciences 32, 1303–1307.Google Scholar
Carrara, P.E., Short, S.K., and Wilcox, R. E., (1986). Deglaciation of the mountainous region of northwestern Montana USA. as indicated by Late Pleistocene ashes. Arctic and Alpine Research 18, 317–325.CrossRefGoogle Scholar
Carrara, P.E., Trimble, D.A., and Rubin, M., (1991). Holocene treeline fluctuations in the northern San Juan Mountains, Colorado USA. as indicated by radiocarbon-dated conifer wood. Arctic and Alpine Research 23, 233–246.Google Scholar
Coope, G. R., (1977). Fossil Coleopteran assemblages as sensitive indicators of climatic changes during the Devensian (Last) cold stage. Philosophical Transactions of the Royal Society of London, Ser. B 280, 313–340.Google Scholar
Elias, S. A., (1983). Paleoenvironmental interpretations of Holocene insect fossil assemblages from the La Poudre Pass site, northern Colorado Front Range. Palaeogeography, Palaeoclimatology, Palaeoecology 41, 87– 102.CrossRefGoogle Scholar
Elias, S. A., (1985). Paleoenvironmental interpretations of Holocene insect fossil assemblages from four high-altitude sites in the Front Range, Colorado, U.S.A. Arctic and Alpine Research 17, 31–48.CrossRefGoogle Scholar
Elias, S. A., (1986). Fossil insect evidence for Late Pleistocene paleoenvir-onments of the Lamb Spring site, Colorado. Geoarchaeology 1, 381– 386.Google Scholar
Elias, S. A., (1988). Climatic significance of late Pleistocene insect fossils from Marias Pass, Montana. Canadian Journal of Earth Sciences 25, 922–926.Google Scholar
Elias, S. A., (1991). Insects and climate change: Fossil evidence from the Rocky Mountains. BioScience 41, 552–559.Google Scholar
Elias, S. A., (1994). “Quaternary Insects and Their Environments.” Smithsonian Institution Press, Washington, DC, 284 pp.Google Scholar
Elias, S. A., (1995). A paleoenvironmental setting for early Paleoindians in western North America: Evidence from the insect fossil record. In “Ancient Peoples and Landscapes” (Johnson, E., Ed.), pp. 255–272. Texas Tech Univ. Press, Lubbock, TX.Google Scholar
Elias, S.A., Anderson, K.H., and Andrews, J. T., (1996). Late Wisconsin climate in the northeastern United States and southeastern Canada, reconstructed from fossil beetle assemblages. Journal of Quaternary Research 11, 417–421.Google Scholar
Elias, S.A., and Nelson, A. R., (1989). Fossil invertebrate evidence for Late Wisconsin environments at the Lamb Spring site, Colorado. Plains Anthropologist 34, 309–326.Google Scholar
Elias, S.A., Short, S.K., and Clark, P. U., (1986). Paleoenvironmental interpretations of the Late Holocene, Rocky Mountain National Park, Colorado, U.S.A. Revue de Paléobiologie 5, 127–142.Google Scholar
Elias, S.A., and Toolin, L. J., (1989). Accelerator dating of a mixed assemblage of late Pleistocene insect fossils from the Lamb Spring site, Colorado. Quaternary Research 33, 122–126.CrossRefGoogle Scholar
Fall, P. L., (1985). Holocene dynamics of the subalpine forest in central Colorado. American Association of Stratigraphic Palynologists Contribution Series 16, 31–46.Google Scholar
Leonard, E., (1989). Climatic change in the Colorado Rocky Mountains: Estimates based on modern climate at late Pleistocene equilibrium lines. Arctic and Alpine Research 21, 245–255.CrossRefGoogle Scholar
Locke, W. W., (1990). Late Pleistocene glaciers and the climate of western Montana, U.S.A. Arctic and Alpine Research 22, 1–13.CrossRefGoogle Scholar
MacDonald, G.M., and Waters, N. M., (1988). The use of most predictable surfaces for the classification and mapping of taxon assemblages. Vege-tatio 74, 125–135.CrossRefGoogle Scholar
Madole, R.F., and Shroba, R. R., (1979). Till sequence and soil development in the North St. Vrain drainage basin, east slope, Front Range, Colorado. In “Guidebook for Postmeeting Field Trips Held in Conjunction with the 32nd Annual Meeting of the Rocky Mountain Section of the Geological Society of America, May 26–27, 1979, Colorado State University” (Ethridge, F. G., Ed.), pp. 124–178. Geological Society of America, Fort Collins, CO.Google Scholar
Markgraf, V., and Scott, L., (1981). Lower timberline in central Colorado during the past 15,000 yr. Geology 9, 231–234.Google Scholar
Porter, S.C., Pierce, K.L., and Hamilton, T. D., (1984). Late Wisconsin mountain glaciation of western in the United States. In “Late Quaternary Environments of the United States, Volume 1” (Porter, S. C., Ed.), pp. 71–111. University of Minnesota Press, Minneapolis.Google Scholar
Prentice, I. C., (1986). Vegetation responses to past climatic variation. Vege-tatio 67, 131–141.CrossRefGoogle Scholar
Richmond, G. M., (1960). Glaciation of the east slope of Rocky Mountain National Park, Colorado. Geological Society of America Bulletin 71, 1371–1382.CrossRefGoogle Scholar
Short, S. K., (1985). Palynology of Holocene sediments Colorado Front Range: Vegetation and treeline changes in the subalpine forest. American Association of Stratigraphic Palynologists Contribution Series 16, 7–30.Google Scholar
Short, S.K., and Elias, S. A., (1987). New pollen and beetle analysis at the Mary Jane site, Colorado: Evidence for late-glacial tundra conditions. Geological Society of America Bulletin 98, 540–548.Google Scholar
Stanford, D., Wedel, W.R., and Scott, G. R., (1982). Archaeological investigations of the Lamb Spring site. Southwestern Lore 47, 14–27.Google Scholar
Stuiver, M., and Reimer, P. J., (1993). Extended 14C data base and revised CALIB 3.0 14C age calibration. Radiocarbon 35, 215–230.Google Scholar