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Mid-Holocene Climate in Northern Minnesota

Published online by Cambridge University Press:  20 January 2017

Richard M. Forester ,
L. Denis Delorme  and
J. Platt Bradbury
Richard M. Forester
Affiliation:
U.S. Geological Survey, MS 919, Denver, Colorado 80225, USA
L. Denis Delorme
Affiliation:
NWRI, P.O. Box 5050, Burlington, Ontario, Canada L7R 4A6
J. Platt Bradbury
Affiliation:
U.S. Geological Survey, MS 919, Denver, Colorado 80225, USA
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Abstract

Study of Holocene ostracodes and diatoms from Elk Lake, in North-Central Minnesota, indicates that the local climate of the mid-Holocene can be subdivided into three intervals. Throughout interval 1 (ca. 7800 to 6700 yr B.P.), climate was colder and much drier than today. During intervals 2 and 3 (ca. 6700 to 4000 yr B.P.) average mean-annual air temperatures approached the modern mean (3.7°C), but warm summers persisted throughout interval 2, whereas during interval 3 warm summers fell into discrete episodes. Furthermore, average mean-annual precipitation was about 85 and 90% of modern during intervals 2 and 3, respectively. Transition times between the principal intervals were less than 50 yr. The expected effects of a retreating Laurentide Ice Sheet that initially maintained a winter-style circulation, followed by transitional climate states, and finally a near-modern circulation pattern may explain these local climatic events.

Type
Articles
Information
Quaternary Research , Volume 28 , Issue 2 , September 1987 , pp. 263 - 273
Copyright
University of Washington

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References

Bradbury, J.P. A Paleolimnological Comparison of Burntside and Shagawa Lakes, Northeastern Minnesota 1978 Environmental Protection Agency Ecological Research Series, EPA-600/3-78-004 Google Scholar
Bryson, R.A. Baerreis, D.A. Wendland, W.M. The character of late-glacial and post-glacial climatic changes. Dart, W. Jr. Jones, J.K. Jr. Pleistocene and Recent Environments of the Central Great Plains. 1970 Univ. Press of Kansas Lawrence 53 74 Google Scholar
Bryson, R.A. Hare, F.K. Climates of North America 1974 Elsevier New York Google Scholar
Dean, W.A. Bradbury, J.Platt Anderson, R.Y. Barnosky, C.W. The variability of Holocene climate change: Evidence from varved lake sediments. Science 226 1984 1191 1194 Google Scholar
Delorme, L.D. Ostracodes as Quaternary paleoecological indicators. Canadian Journal of Earth Sciences 6 1969 1471 1476 CrossRefGoogle Scholar
Delorme, L.D. Zoltai, S.C. Distribution of an Arctic ostracod fauna in space and time. Quaternary Research 21 1984 65 73 CrossRefGoogle Scholar
Delorme, L.D. Zoltai, S.C. Kalas, L.L. Freshwater shelled invertebrate indicators of paleoclimate in Northwestern Canada during late glacial times. Canadian Journal of Earth Sciences 14 1977 2029 2046 Google Scholar
Forester, R.M. Relationship of two lacustrine ostracode species to solute composition and salinity: Implications for Paleohydrochemistry. Geology 11 1983 435 438 Google Scholar
Forester, R.M. Limnocythere bradburyi n. sp.: Modern ostracode from Central Mexico and a possible Quaternary paleoclimate indicator. Journal of Paleontology 59 1985 344 369 Google Scholar
Forester, R.M. Determination of the dissolved anion composition of ancient lakes from fossil ostracodes. Geology 14 1986 796 798 2.0.CO;2>CrossRefGoogle Scholar
Forester, R.M. Brouwers, E.M. Hydrochemical parameters governing the occurrence of estuarine and marginal estuarine ostracodes: An example from South-Central Alaska. Journal of Paleontology 59 1985 344 369 Google Scholar
Gorham, E. Dean, W.E. Sanger, J.E. The chemical composition of lakes in the North-Central United States. Limnology and Oceanography 28 1983 287 301 Google Scholar
Hurley, J.P. Kenoyer, G.J. Bowser, C.J. Ground water as a silica source for diatom production in a precipitation dominated lake. Science 227 1985 1576 1578 Google Scholar
Kilham, P. Kilham, S.S. Hecky, R.E. Hypothesized resource relationship among African planktonic diatoms. Limnology and Oceanography 31 1986 1167 1179 Google Scholar
Knox, J.C. Responses of river systems to Holocene climates. Wright, H.E. Jr. Late Quaternary Environments of the United States Vol. 2 1983 Univ. of Minnesota Press Minneapolis 26 41 “The Holocene” Google Scholar
Knox, J.C. Responses of floods to Holocene climate change in the upper Mississippi Valley. Quaternary Research 23 1985 287 300 Google Scholar
Kutzbach, J.E. Guetter, P.J. The influence of changing orbital parameters and surface boundary conditions on climate simulations for the past 18,000 years. Journal of The Atmospheric Sciences 43 1986 1726 1759 Google Scholar
McAndrews, J.H. Postglacial history of prairie, savana, and forest in Northwestern Minnesota. Torrey Botanical Club Memoirs 22 1966 1 72 Google Scholar
Winter, T.C. Classification of the hydrologic settings of lakes in North Central United States. Water Resources Research 13 1977 753 767 Google Scholar
Wright, H.E. The dynamic nature of Holocene vegetation a problem in paleoclimatology, biogeography, and stratigraphic nomenclature. Quaternary Research 6 1976 581 596 Google Scholar
Wright, R.F. The impact of forest fire on the nutrient influxes to small lakes in Northeastern Minnesota. Ecology 57 1976 649 663 Google Scholar