Lauriol, Bernard

28 items:

Late Quaternary paleoenvironments and growth of intrusive ice in eastern Beringia (Eagle River valley, northern Yukon, Canada) Categories: Publication; Types: Citation; Tags: Paleo and Holocene
Investigation of ice-wedge infilling processes using stable oxygen and hydrogen isotopes, crystallography and occluded gases (O2, N2, Ar) The source and mechanism of infill of ice wedges of various ages (modern to Pleistocene) were examined for sites in the western Arctic. Several techniques were employed, including stable O-H isotope and crystallographic analyses of the ice, and gas composition (O2, N2 and Ar) analyses of air entrapped in the ice. The results indicate that climatic and site-specific conditions may influence the source of infilling during ice-wedge growth, so that wedge ice in wet and dry environments exhibits different characteristics. For example, Vault Creek tunnel (Alaska) ice wedges, dating from the Late Pleistocene, a cold and dry period, preserved stable O-H isotopes and gas compositions similar to those expected for ice formed... Categories: Publication; Types: Citation; Tags: M1-Physical Science, Paleo and Holocene
A new whitefish from the early Quaternary of Bluefish Basin, Yukon Territory, Canada, and its paleoenvironmental implications Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Fish, Monitoring 1-Changes in Plant and Animal Distribution: Fauna
A new whitefish from the early Quaternary of Bluefish Basin, Yukon Territory, Canada, and its paleoenvironmental implications Categories: Publication; Types: Citation; Tags: M1-Fish
Holocene Evolution of Lakes in the Bluefish Basin, Northern Yukon, Canada RÉSUMÉ. La présente étude retrace l'évolution des lacs de l'Holocène situés dans le bassin Bluefish, dans le nord du Yukon. Elle s'appuie sur la lithologie des lacs, la répartition des macrofossiles de plantes et la datation par le radiocarbone des matières organiques de base se trouvant dans les carottes de sédiments provenant d'anciens bassins lacustres. La datation par le radiocarbone de la matière organique de base d'anciens bassins lacustres fait remonter cette matière à l'Holocène supérieur (< 3 770 ans avant le présent), tandis que la datation par le radiocarbone des plateaux de tourbe polygonaux (~2 m d'épaisseur) qui entourent la plus grande partie du groupement d'anciens bassins lacustres remonte à l'Holocène... Categories: Publication; Types: Citation; Tags: P2-Changes in Plant and Animal Species Due to Climate Change

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