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Résultats de la recherche (10 résultats)

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Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Dating early and middle Pleistocene glaciations in central Yukon by tephrochronology
  • Canada ; Dating ; Glaciation ; K/Ar dating ; Palaeo-environment ; Pleistocene ; Quaternary ; Tephrochronology ; Thermoluminescence ; Yukon
  • on the timing of extensive Pleistocene glaciations that affected this area. This approach relies on the tephrochronological method, augmented by glass-fission-track, K-Ar, and TL (thermoluminescence) ages, which are supported at some localities by paleomagnetic
  • 2001
  • Agricultural land use ; Common agricultural policy ; Environmental degradation ; Historical geography ; Human ecology ; Human impact ; Iceland ; Modelling ; Over-grazing ; Soil erosion ; Tephrochronology
  • observation of soil erosion, temporally defined by tephrochronology, to highlight the extent of land degradation during this period. The tragedy of the commons explanation of degradation is then assessed by evaluating historic documentary sources
  • 2001
  • C 14 dating ; Climatic variation ; Deglaciation ; Idaho ; Palaeo-environment ; Palynology ; Pollen diagram ; Quaternary ; Tephrochronology ; United States of America
  • 2001
  • Alaska ; Dating ; Glacial features ; Interglacial ; Palaeo-environment ; Pleistocene ; Stratigraphic correlation ; Stratigraphy ; Tephrochronology ; Thermoluminescence
  • 2001
  • British Columbia ; Canada ; Cold area ; Electron microscope ; Holocene ; Lacustrine sediment ; Magnetic susceptibility ; Palaeo-environment ; Quaternary ; Research technique ; Tephrochronology
  • 2001
  • France ; Geochemistry ; Heavy minerals ; Massif Central ; Mineralogy ; Pliocene ; Pyroclastic ; Quaternary ; Stratigraphy ; Tephrochronology ; Volcanism
  • 2001
  • C 14 dating ; Canada ; Dendrochronology ; Glacier ; Glacier fluctuation ; Moraine ; Palaeosol ; Quaternary ; Rocky Mountains ; Stratigraphy ; Tephrochronology
  • 2001
  • C 14 dating ; Geochronology ; Holocene ; Palaeoclimate ; Quaternary ; Risk ; Tephrochronology ; United States of America ; Volcanic eruption ; Volcanism ; Washington State
  • 2001
  • Campania ; Glacial features ; Interglacial ; Italy ; Lacustrine sediment ; Palaeo-environment ; Palynology ; Pleistocene ; Pollen diagram ; Tephrochronology
  • 2001
  • C 14 dating ; Climatic variation ; Fluvial terrace ; Lateglacial ; Mineralogy ; New Zealand ; North Island ; Quaternary ; Stratigraphy ; Tephrochronology
  • 2001