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Abbravation: Quaternary Research

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Cambridge University Press

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10.1016/0300-2977(94)00110-u

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1096-0287

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Aspartic Acid Racemization in Late Wisconsin Lake

Authors: Roy Allen Schroeder Jeffrey L Bada
Publish Date: 1978/03
Volume: 9, Issue: 2, Pages: 193-204
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Abstract

We have determined aspartic acid racemization and 14C ages in sediment from a 17m piston core recovered from Lake Ontario This core represents a depositional record extending back into the Late Wisconsin Total organic radiocarbon ages of the glaciolacustrine lower section of the core are older than the true depositional age Hence we suggest that these ages do not represent time elapsed since deposition but rather may be up to several thousand years too old due to mixing with 14Cdepleted organic matter and possibly also Damino acids contained by the glacier and deposited as the glacier receded Further studies are suggested that might test this hypothesis as well as establish the general applicability of racemization dating to clay sediments

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References

citation title=Biogeochemistry of organic matter II Thermal reaction kinetics and transformation products of amino compounds citation author=Vallentyne JR citation publication date=1964 citation journal title=Geochimica et Cosmochimica Acta citation volume=28 citation firstpage=157 citation lastpage=188 citation doi=101016/0016703764901474

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Other Papers In This Journal:
  1. Ice-Sheet Glaciation of the Puget Lowland, Washington, during the Vashon Stade (Late Pleistocene) 1
  2. The Timing of Late Pleistocene Mammalian Extinctions in North America
  3. An Altitudinal Cline in Tropical African Grass Floras and Its Paleoecological Significance
  4. Glaciations of the West Coast Range, Tasmania
  5. Tephrochronology of Late Wisconsin Deglaciation and Holocene Glacier Fluctuations Near Glacier Peak, North Cascade Range, Washington
  6. Determining the Exposure Age of a Karst Landscape
  7. Stable Isotope Stratigraphy of a Late Last Interglacial Speleothem from Rana, Northern Norway
  8. Holocene Paleoenvironmental Change in the Kenyan Central Rift as Indicated by Micromammals from Enkapune Ya Muto Rockshelter
  9. Paleoecological Studies at Lake Patzcuaro on the West-Central Mexican Plateau and at Chalco in the Basin of Mexico 1
  10. Some Effects of Partial Recrystallisation on 14 C dating Late Pleistocene Corals and Molluscs
  11. Some Effects of Partial Recrystallisation on 14 C dating Late Pleistocene Corals and Molluscs
  12. Climate Variation and the Rise and Fall of an Andean Civilization
  13. Saharan Dust Transport and High-Latitude Glacial Climatic Variability: The Alboran Sea Record
  14. Pedogenic Gradients for Iron and Aluminum Accumulation and Phosphorus Depletion in Arctic and Alpine Soils as a Function of Time and Climate
  15. Glacial-Marine Sedimentation and Quaternary Glacial History of Marguerite Bay, Antarctic Peninsula
  16. QUA volume 31 issue 1 Cover and Front matter
  17. Paleoclimatic Significance of the Stable Isotopic Composition and Petrology of a Late Pleistocene Stalagmite from Botswana
  18. Mass Balance and Sliding Velocity of the Puget Lobe of the Cordilleran Ice Sheet During the Last Glaciation
  19. Tephrochronology of the Western Gulf of Mexico for the Last 185,000 Years
  20. Is There Evidence for Solar Forcing of Climate in the GISP2 Oxygen Isotope Record?
  21. Plio-Pleistocene Marine-Continental Correlation using Habitat Indicators from Olduvai Gorge, Tanzania
  22. Late Weichselian Marine 14 C Reservoir Ages at the Western Coast of Norway
  23. Late-Glacial and Early Holocene Environmental and Climatic Change at Lake Tambichozero, Southeastern Russian Karelia
  24. The Late Wisconsinan Savanna Terrace in Tributaries to the Upper Mississippi River
  25. The Late Wisconsinan Savanna Terrace in Tributaries to the Upper Mississippi River
  26. Optical Dating of Holocene Dune Sands in the Ferris Dune Field, Wyoming
  27. Fire and Vegetation History from the Coastal Rain Forest of the Western Oregon Coast Range
  28. Alluvial Pollen on the North China Plain
  29. Vegetation, Climate, and Sea Level in the Past 55,000 Years, Hanjiang Delta, Southeastern China
  30. The Classic Marine Isotope Substage 5e
  31. Mire Development and Environmental Change, Barrington Tops, New South Wales, Australia
  32. Significance of Two New Pleistocene Plant Records from Western Europe
  33. Lake Tapps Tephra: An Early Pleistocene Stratigraphic Marker in the Puget Lowland, Washington
  34. Modern and Holocene Pollen Assemblages from Some Small Arctic Lakes on Somerset Island, NWT, Canada
  35. Toward the Definition of Criteria for the Recognition of Artificial Bone Alterations 1
  36. Late Weichselian and Holocene Relative Sea-level History of Bröggerhalvöya, Spitsbergen
  37. A Comparison of Radiolarian and Foraminiferal Paleoecology in the Southern Indian Ocean: New Evidence for the Interhemispheric Timing of Climatic Change
  38. Late Wisconsin Ice-Surface Profile Calculated from Esker Paths and Types, Katahdin Esker System, Maine
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