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The Bluegrass Fauna and Changes in Middle Holocene Hunter-Gatherer Foraging in the Southern Midwest

Published online by Cambridge University Press:  20 January 2017

C. Russell Stafford ,
Ronald L. Richards  and
C. Michael Anslinger
C. Russell Stafford
Affiliation:
Department of Geography, Geology, and Anthropology, Indiana State University, Terre Haute, In 47809
Ronald L. Richards
Affiliation:
Indiana State Museum, 202 N. Alabama Street, Indianapolis, In 46204
C. Michael Anslinger
Affiliation:
Cultural Resource Analysts, 2800 Virginia Avenue, Hurricane, Wv 25526
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Abstract

A shift in Archaic foraging to a largely logistic collector strategy by the middle Holocene is indicated by the presence of rock-filled middens in the U.S. southern Midwest. This change has usually been attributed to the development of super-rich wetland habitats in large river valleys. Analysis of a well-preserved faunal assemblage from the Bluegrass site, a late Middle Archaic base camp/mortuary occupation, located in an interior upland drainage basin of southwestern Indiana, suggests that small-bodied terrestrial mammals and reptiles were substituted for aquatic animal foods. Comparisons with faunal assemblages from other base camps in a diverse set of habitats in the southern Midwest indicates that white-tailed deer and hickory nuts were the basis for the logistical foraging strategy rather than aquatic resources. It is proposed that a change in forest composition from a mesic closed canopy to an open oak-hickory association by the middle Holocene increased the abundance of deer and nut mast leading to a coarse-grain use of the landscape.

Resumen

Resumen

Un cambio en elforrraje arcaico a una estrategia predominante mente se colectora logística durante el Holoceno medio es indicado por la presencia basura les llenos de piedras en el entro-sur de los E.E.U.U. Este cambio normalmente ha sido atribuído al desarrollo de habitats humédos en los valles de ríos grandes. Análisis de una asamblea bien preservada de fauna del sitio Bluegrass, una ocupación de campamento base que data del arcaico medio y tardís, situada en una cuenca de un río de la meseta del suroeste de Indiana, sugiere que mamíferos terrestres pequeños y reptiles fueron sustituidos por comida de animales acuáticos. Comparaciones con conjuntos de fauna de otros campanmentos base en diversos habitat en el área indican que el venado de cola blanca y los nogales fueron más bdsicos la báse para la estrategia deforraje logístico que los recursos acuáticos. Se propone que un cambio en la composición del bosque mésico cerrado a una asociación abierta de roble/nogal en el Holoceno medio aumentó la abundancia de venado y nueces, loque ilevó a un uso variado del paisage.

Type
Reports
Information
American Antiquity , Volume 65 , Issue 2 , April 2000 , pp. 317 - 336
Copyright
Copyright © The Society for American Archaeology 2000

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References

References Cited

Anslinger, C. M. 1988 Bluegrass : A Middle-Late Archaic Site in Southwestern Indiana. Paper presented at the 33rd Annual Midwest Archaeological Conference, Urbana, Illinois.Google Scholar
Anslinger, CM., Pecora, A.M., Niquette, CM., and Kerr, J.P. 1994 Salvage Excavations at the Railway Museum Site (15JF630), Jefferson County, Kentucky. Contract Publication Series 94-15.Cultural Resource Analysts Inc., Hurricane, West Virginia.Google Scholar
Asch, D. L., and Asch, N. B. 1978 The Economic Potential of Iva Annua and its Prehistoric Importance in the Lower Illinois Valley. In the Nature and Status of Ethnobotany, edited by Ford, R. I., pp. 300–341. Anthropology Papers 67. Museum of Anthropology, University of Michigan, Ann Arbor.Google Scholar
Asch, D. L., and Asch, N. B. 1985 Archeobotany of the Campbell Hollow Archaic Occupations. In The Campbell Hollow Archaic Occupations : A Study oflntrasite Spatial Structure in the Lower Illinois Valley, edited by Stafford, C. R., pp. 82–107. Research Series No. 4. Kampsville Archeological Center, Center for American Archaeology, Kampsville, Illinois.Google Scholar
Baker, R.G., Bettis, E.A., Schwert, D.P., Horton, D.G. 1996 Holocene Paleoenvironments of Northeast Iowa. Ecological Monographs 66 : 203–234.CrossRefGoogle Scholar
Baker, R. G., Maher, L. J., Chumbley, C. A., and Van Zant, K. L. 1992 Patterns ofHolocene Environmental Change in the Midwestern United States. Quaternary Research 37 : 379–389.Google Scholar
Bartlein, P.J., Webb, T. III, and Fieri, E. 1984 Holocene Climatic Change in the Northern Midwest : Pollen-derived Estimates. Quaternary Research 22 : 361–374.CrossRefGoogle Scholar
Bayham, F.E. 1979 Factors Influencing the Archaic Pattern of Animal Utilization. Kiva 44 : 219–235.CrossRefGoogle Scholar
Bellis, J. 1981 Test Excavations Conducted at the Breeden Site, 12Hrl 1, in Harrison County. Proceedings of the Indiana Academy of Science 91 : 78–92.Google Scholar
Bender, B. 1985 Emergent Tribal Formations in the American Midcontinent. American Antiquity 50 : 52–62.Google Scholar
Bettinger, R. L. 1991 Hunter-Gatherers : Archaeological and Evolutionary Theory. Plenum Press, New York.CrossRefGoogle Scholar
Bettinger, R. L., and Baumhoff, M. A. 1982 The Numic Spread : Great Basin Cultures in Competition. American Antiquity 47 : 485–503.Google Scholar
Binford, L.R. 1983 In Pursuit of the Past : Decoding the Archaeological Record. Thames and Hudson, London.Google Scholar
Bowen, W.R. 1977 A Reevaluation of Late Archaic Subsistence and Settlement Patterns in the Western Tennessee Valley. Tennessee Anthropologist 2 : 101–120.Google Scholar
Breitburg, E. 1982 Analysis of Area A Fauna. In The Carrier Mills Archaeological Project : Human Adaptation in the Saline Valley Illinois, edited by Jefferies, R.W. and Butler, B., pp. 861–917. Center for Archaeological Investigations, Research Paper No. 33.Google Scholar
Broughton, J.M. 1994 Declines in Mammalian Foraging Efficiency during the Late Holocene, San Francisco Bay, California. Journal of Anthropological Archaeology 13 : 371–401.Google Scholar
Brown, J. A. 1985 Long-Term Trends to Sedentism and the Emergence of Complexity in the American Midwest. In Prehistoric Hunter- Gatherers : The Emergence of Cultural Complexity, edited by Price, T. D. and Brown, J.A., pp. 201–231. Academic Press, Orlando.Google Scholar
Brown, J. A., and Vierra, R. K. 1983 What Happened in the Middle Archaic? Introduction to an Ecological Approach to Koster Site Archaeology. In Archaic Hunters and Gatherers in the American Midwest, edited by Phillips, J. L. and Brown, J.A., pp. 165–195. Academic Press, New York.Google Scholar
Buikstra, J. E. 1976 Helton Phase Human Skeletal Materials from Koster, 1970 : Preliminary Analysis. Appendix In Koster : An Artifact Analysis of Two Archaic Phases in Westcentral Illinois, edited by Cook, T. G.. Scientific Paper No. 2. Archaeological Program, Northwestern University, Evanston, Illinois.Google Scholar
Carlson, D. L. 1979 Hunter-gatherer Mobility Strategies : An Example from the Koster Site in the Lower Illinois Valley. Ph.D. dissertation, Northwestern University. University Microfilms, Ann Arbor.Google Scholar
Charles, D.K., and Buikstra, J.E. 1983 Archaic Mortuary Sites in the Central Mississippi Drainage : Distribution, Structure, and Behavioral'Implications. In Archaic Hunters and Gatherers in the American Midwest, edited by Phillips, J. L. and Brown, J.A., pp. 117–145. Academic Press, New York.Google Scholar
Chumbley, C.A., Baker, R.G., and Bettis, E.A. III 1990 Midwestern Holocene Paleoenvironments Revealed by Floodplain Deposits in Northeastern Iowa. Science 29 : 272–274.Google Scholar
Cleland, C.E. 1976 The Focal-Diffuse Model : An Evolutionary Perspective on the Prehistoric Cultural Adaptations of the Eastern United States. Mid-Continental Journal of Archaeology 1 : 59–76.Google Scholar
COHMAP 1988 Climatic Changes of the Last 18,000 Years : Observations and Model Simulations. Science 241 : 1043–1052.Google Scholar
Cook, T. G. (editor) 1976 Koster : An Artifact Analysis of Two Archaic Phases in Westcentral Illinois. Scientific Paper No. 2. Archaeological Program, Northwestern University, Evanston, Illinois.Google Scholar
Cummings, K. S., and Mayer, C. A. 1992 Field Guide to Freshwater Mussels of the Midwest. Illinois Natural History Survey, Champaign.Google Scholar
Delcourt, H.R. 1979 Late Quaternary Vegetation History of the Eastern Highland Rim and Adjacent Cumberland Plateau of Tennessee. Ecological Monographs 49 : 255–280.CrossRefGoogle Scholar
Delcourt, P.A., and Delcourt, H. R. 1987 Long-term Forest Dynamics of the Temperate Zone : A Case Study of Late-quaternary Forests in Eastern North America. Springer-Verlag, New York.Google Scholar
Delcourt, P.A., and Delcourt, H. R. 1997 Report of Paleoecological Investigations Cliff Palace Pond, Jackson County, Kentucky, in the Daniel Boone National Forest. Report submitted to USDA Forest Service, Daniel Boone National Forest, Winchester, Kentucky.Google Scholar
Denniston, R.F., Gonzalez, L.A., Asmerom, Y., Baker, R.G., Reagan, M.K., and Bettis, E.A. III 1999 Evidence for Increased Cool Season Moisture during the Middle Holocene. Geology 27 : 815–181.Google Scholar
Dorale, J.A., Gonzales, L.A., Reagen, M.K., Pickett, D.A., Murrell, M.T., and Baker, R.G. 1992 A High-resolution Record of Holocene Climate Change in Speleothem Calcite from Cold Water Cave, Northeast Iowa. Science 258 : 1626–1630.Google Scholar
Dorale, J.A., Gonzales, L.A., Reagen, M.K., Pickett, D.A., Murrell, M.T., and Baker, R.G. Annual Review of Anthropology 3 : 385–413.Google Scholar
Frankenburg, S.R., Albertson, D.G., and Kohn, L. 1988 The Elizabeth Skeletal Remains : Demography and Disease. In The Archaic and Woodland Cemeteries at the Elizabeth Site in the Lower Illinois Valley, edited by Charles, D.K., Leigh, S.R., and Buikstra, J.E., pp 103–119. Research Series 7. Center for American Archeology, Kampsville Archeological Center, Kampsville, Illinois.Google Scholar
Fraser, G. S., and Fishbaugh, D. A. 1986 Alluviation of the Ohio River Valley near Evansville, Indiana, and Its Effect on the Distribution of Sand and Gravel in the Area. Geological Survey Special Report 36. Indiana Department of Natural Resources, Bloomington.Google Scholar
Frye, J.C, Leonard, A.B., Willman, H.B., and Glass, H.D. 1972 Geology and Paleontology of Late Pleistocene Lake Saline, Southeastern Illinois. Circular 471. Illinois State Geological Survey, Urbana.Google Scholar
Gardner, P. S. 1997 The Ecological Structure and Behavioral Implications of Mast Exploitation Strategies. In People, Plants, and Landscapes : Studies in Paleoethnobotany, edited by Gremillion, K.J., pp.161–178, University of Alabama Press, Tuscaloosa.Google Scholar
Graham, R.W., and Mead, J.I. 1987 Environmental Fluctuations and Evolution of Mammalian Faunas during the Last Deglaciation in North America. In North America and Adjacent Oceans during the Last Deglaciation, edited by Ruddiman, W. F. and Wright, H.E. Jr., pp. 371–102. Geological Society of America, Boulder.Google Scholar
Gray, H. H. 1984 Archaeological Sedimentology of Overbank Silt Deposits ontheFloodplainofthe Ohio River near Louisville, Kentucky. Journal of Archaeological Science 11 : 421–432.CrossRefGoogle Scholar
Grayson, D.K. 1984 Quantitative Zooarchaeology : Topics in the Analysis of Archaeological Faunas. Academic Press, Orlando.Google Scholar
Griffin, J.B. 1967 Eastern North American Archaeology : A Summary. Science 156 : 175–191.Google Scholar
Hajic, E.R. 1990 Late Pleistocene and Holocene Landscape Evolution, Depositional Subsystems, and Stratigraphy in the Lower Illinois River Valley and Adjacent Central Mississippi River Valley. Ph.D. dissertation, University of Illinois. University Microfilms, Ann Arbor.Google Scholar
Hill, F. C. 1975 Effects of the Environment on Animal Exploitation by Archaic Inhabitants of the Koster Site, Illinois. Ph.D. dissertation, University of Louisville. University Microfilms, Ann Arbor.Google Scholar
Hoffmeister, D.F. 1989 Mammals of Illinois. University of Illinois Press, Urbana.Google Scholar
Hu, F.S., Slawinski, D., Wright, H.E. Jr., Ito, E., Johnson, R.G., Kelts, K.R., and McEwan, R.R. 1999 AbruptChangesin North American Climate during Early Holocene Times. Nature 400 : 437–440.CrossRefGoogle Scholar
Janzen, D.E. 1977 An Examination of Late Archaic Development in the Falls of the Ohio River Area. In For the Director : Research Essays in Honor of James B. Griffin, edited by Cleland, C.E., pp. 123–143. Anthropological Papers 61. Museum of Anthropology, University of Michigan, Ann Arbor.Google Scholar
Jefferies, R.W 1983 Middle Archaic-Late Archaic Transition in Southern Illinois : An Example from the Carrier Mills Archaeological District. American Archeology 3 : 199–206.Google Scholar
Jefferies, R.W 1997 Middle Archaic Bone Pins : Evidence of Mid-Holocene Regional-Scale Social Groups in the Southern Midwest. American Antiquity 62 : 464–487.Google Scholar
Jefferies, R.W, and Butler, B. M. (editors) 1982 The Carrier Mills Archaeological Project : HumanAdaptation in the Saline Valley, Illinois. Research Paper No. 33. Center for Archaeological Investigations, Southern Illinois University, Carbondale.Google Scholar
Justice, N.D. 1987 Stone Age Spear and Arrow Points of the Midcontinental and Eastern United States. Indiana University Press, Bloomington.Google Scholar
King, J. E. 1981 Late Quaternary Vegetational History of Illinois. Ecological Monographs 51 : 43–62.Google Scholar
King, J.E., and Allen, W.H. 1977 A Holocene Vegetation Record from the Mississippi River Valley, Southeastern Missouri. Quaternary Research 8 : 307–323.Google Scholar
Klippel, W.E., and Parmalee, P.W. 1982 Diachronic Variation in Insectivores from Cheek Bend Cave and Environmental Change in the Midsourth. Paleobiology 8 : 447–158.CrossRefGoogle Scholar
Kuehn, S.R. 1998 New Evidence for Late Paleoindian-Early Archaic Subsistence in the Western Great Lakes. American Antiquity 63 : 457–476.Google Scholar
Lopinot, N. H., Avery, G. E., and Marrow, C. A. 1982 Biophysical Environment of the Carrier Mills Archaeological District. In The Carrier Mills Archaeological Project : Human Adaptation in the Saline Valley, Illinois, edited by Jefferies, R. W and Butler, B. M., pp 673–860. Research Paper No. 33. Center for Archaeological Investigations, Southern Illinois University, Carbondale.Google Scholar
Lynch, B.M. 1982 Mortuary Behavior in the Carrier Mills Archaeological District. In The Carrier Mills Archaeological Project : Human Adaptation in the Saline Valley, Illinois, edited by Jefferies, R.W. and Butler, B.M., pp 1115–1231. Center for Archaeological Investigations, Southern Illinois University, Carbondale.Google Scholar
Madsen, D.B. and Schmitt, D.N. 1998 Mass Collecting and the Diet Breadth Model : A Great Basin Example. Journal of Archaeological Science 25 : 445^*55.Google Scholar
Mayes, L.A. 1997 The Bluegrass Site (12wl62) : BioarchaeologyAnalysis of a Middle-Late Archaic Mortuary Site in Southwestern Indiana. Unpublished Thesis, Department of Anthropology, Mississippi State University.Google Scholar
McMillan, R. B., and Klippel, W E. 1981 Environmental Changes and Hunter-Gatherer Adaptations in the Southern Prairie Peninsula. Journal of Archaeological Science 8 : 215–245.Google Scholar
Meltzer, D. J., and Smith, B. D. 1986 Paleoindian and Early Archaic Subsistence Strategies in Eastern North America. In Foraging, Collecting and Harvesting : Archaic Period Subsistence and Settlement in the Eastern Woodlands, edited by Neusius, S.W., pp. 3–31. Occasional Paper No. 6. Center for Archaeological Investigations, Southern Illinois University, Carbondale.Google Scholar
Mumford, R.E., and Whitaker, J.O. 1982 Mammals of Indiana. Indiana University Press, Bloomington.Google Scholar
Munson, C.A. (editor) 1980 Archaeological Salvage Excavation at Patoka Lake, Indiana : Prehistoric Occupation of the Upper Patoka River Valley. Research Report No. 6. A. Black, Glenn Laboratory of Archaeology, Indiana University, Bloomington.Google Scholar
Munson, P.J. 1986 What Happened in the Archaic in the Midwestern United States? Reviews in Anthropology 13 : 276–282.Google Scholar
Neusius, S.W. 1982 Early-Middle Archaic Subsistence Strategies : Changes in Faunal Exploitation at the Koster site. Ph.D. dissertation, Northwestern University. University Microfilms, Ann Arbor.Google Scholar
Neusius, S.W. 1986 Generalized and Specialized Resource Utilization During the Archaic Period : Implications of the Koster Site Faunal Record. In Foraging, Collecting and Harvesting : Archaic Period Subsistence and Settlement in the Eastern Woodlands, edited by Neusius, S.W., pp. 117–144. Occasional Paper No. 6. Center for Archaeological Investigations, Southern Illinois University, Carbondale.Google Scholar
Nixon, C. M., McClain, M. W., and Donohoe, R. W. 1975 Effects of Hunting and Mast Crops on a Squirrel Population. Journal of Wildlife Management 39 : 1–25.Google Scholar
Oetelaar, G.A. 1982 An Analysis of Microremains in an Area a Column Sample. In The Carrier Mills Archaeological Project : Human Adaptation in the Saline Valley, Illinois, edited by Jefferies, R. W. and Butler, B.M. pp. 989–1007. Research Paper No 33. Center for Archaeological Investigations, Southern Illinois University, Carbondale.Google Scholar
Ogden, J.G. III 1966 Forest History of Ohio. I. Radiocarbon Dates and Pollen Stratigraphy of Silver Lake, Logan County, Ohio. The Ohio Journal of Science 66 : 387–100.Google Scholar
Parmalee, P. W. 1967 The Fresh-water Mussels of Illinois. Popular Science Series, Vol 8. Illinois State Museum, Springfield.Google Scholar
Potzger, J.E., Potzger, M.E., and McCormick, J. 1956 The Forest Primeval of Indiana as Recorded in the Original U.S. Land Surveys and the Evaluation of Previous Interpretations of Indiana Vegetation. Butler University Botanical Studies 13 : 95–111.Google Scholar
Purdue, J.R. 1980 Clinal Variation of Some Mammals during the Holocene. Quaternary Research 13 : 242–258.Google Scholar
Smith, A.J., Donovan, J.J., Ito, E., and Engstron, D.R. 1997 Ground-water Processes Controlling a Prairie Lake's Response to Middle Holocene Drought. Geology 25 : 391–394.Google Scholar
Stafford, C.R. 1991 Archaic Period Logistical Foraging Strategies in West- Central Illinois. Midcontinental Journal of Archaeology 16 : 212–246.Google Scholar
Stafford, C.R. 1994 Structural Changes in Archaic Landscape Use in the Dissected Uplands of Southwestern Indiana. American Antiquity 59 : 219–237.Google Scholar
Stafford, C.R. 1995 Pathways to Resource Intensification and Archaic Hunter-Gatherers in the U.S. Midcontinent. Paper presented at the 60 Annual Meeting of the Society for American Archaeology, Minneapolis.Google Scholar
Stephens, D.W., and Krebs, J.R. 1986 Foraging Theory. Princeton University Press, Princeton.Google Scholar
Styles, B. W. 1994 The Value of Archaeological Faunal Remains for Paleodietary Reconstruction : A Case Study for the Midwestern United States. In Paleonutrition : The Diet and Health of Prehistoric Americans, edited by Sobolik, K. D., pp. 34–54. Occasional Paper No. 22. Center for Archaeological Investigations, Southern Illinois University, Carbondale.Google Scholar
Styles, B. W. 1995 Changing Subsistence Strategies in the Midwestern United States : The View from Big Valleys. Paper presented at the 60th Annual Meeting of the Society for American Archaeology, Minneapolis.Google Scholar
Styles, B. W, Ahler, S. R., and Fowler, M. L. 1983 Modoc Rock Shelter Revisited. In Archaic Hunters and Gatherers in the American Midwest, edited by Phillips, J. L. and Brown, J.A., pp. 261–297. Academic Press, New York.Google Scholar
Styles, B. W, and Klippel, W. E. 1996 Mid-Holocene Faunal Exploitation in the Southeastern United States. In Archaeology of the Mid-Holocene Southeast, edited by Sassaman, K.E. and Anderson, D.G., pp. 115–133. University of Florida Press, Gainesville.Google Scholar
Talalay, L., Keller, D. R., and Munson, P. J. 1984 Hickory Nuts, Walnuts, Butternuts, and Hazelnuts : Observations and Experiments Relevant to Their Aboriginal Exploitation in Eastern North America. In Experiments and Observations on Aboriginal Wild Plant Food Utilization in Eastern North America, edited by Munson, P.J., pp. 338–359. Indiana Historical Society, Indianapolis.Google Scholar
Webb, m. T, Bartlein, P.J., and Kutzbach, J.E. 1987 Climatic Change in Eastern North America during the Past 18,000 Years; Comparisons of Pollen Data with Model Results. In North America and Adjacent Oceans during the Last Deglaciation, edited by Ruddiman, W. F. and Wright, H.E. Jr., pp.447–162. Geological Society of America, Boulder.Google Scholar
Webb, T. III, Bartlein, P.J., Harrison, S.P., and Anderson, K.H. 1993 Vegetation, Lake Levels, and Climate in Eastern North America for the Past 18,000 Years. In Global Climates since the Last Glacial Maximum, edited by Wright, H.E. Jr., Kutzbach, J.E., Webb m, T., Ruddiman, W.F., Street-Perrott, F.A., and Bartlein, P.J., pp. 415–167. University of Minnesota Press, Minneapolis.Google Scholar
Wilkins, G. R., Delcourt, P. A., Delcourt, H. R., Harrison, F. W., Turner, M. R. 1991 Paleoecology of Central Kentucky since the Last Glacial Maximum. Quaternary Research ‘ifs-llA-iy). Google Scholar
Williams, A. S. 1974 Late-Glacial-Postglacial Vegetational History of the Pretty Lake Region, Northeastern Indiana. U.S. Geological Survey Paper 686-B. U.S. Government Printing Office, Washington, D.C. Google Scholar
Winterhalder, B. and Goland, C. 1997 An Evolutionary Ecology Prospective on Diet Choice, Risk, and Plant Domestication, In People, Plants, and Landscapes : Studies in Paleoethnobotany, edited by Gremillion, K.J., pp.123–160, University of Alabama Press, Tuscaloosa.Google Scholar
Winters, H.D. 1974 Introduction to the New Edition. In Indian Knoll, edited by Webb, W.S., pp. v–xxvii. University of Tennessee Press, Knoxville.Google Scholar
Wright, H.E. 1992 Patterns of Holocene Climatic Change in the Midwestern United States. Quaternary Research 38 : 129–134.Google Scholar
Yerkes, R. W 1994 Vertebrate Remains from the Railway Museum Site. In Salvage Excavations at the Railway Museum Site (I5JF630), Jefferson County, Kentucky, by Anslinger, CM., Pecora, A.M., Niquette, CM., and Kerr, J.R, pp. 194–329. Contract Publication Series 94-15.Cultural Resource Analysts Inc., Hurricane, West Virginia.Google Scholar
Yu, Z., McAndrews, J.H., and Eicher, U. 1997 Middle Holocene Dry Climate Caused by Change in Atmospheric Circulation Patterns : Evidence from Lake Levels and Stable Isotopes. Geology 25 : 251–254.Google Scholar