FN Archimer Export Format
PT J
TI Potential pitfalls of pollen dating
BT 
AF NEULIEB, Thomas
   LEVAC, Elisabeth
   SOUTHON, John
   LEWIS, Michael
   PENDEA, I. Florin
   CHMURA, Gail L.
AS 1:1,2;2:1,2,3;3:4;4:5;5:6;6:1,2;
FF 1:;2:;3:;4:;5:;6:;
C1 McGill Univ, Dept Geog, Montreal, PQ H3A 0B9, Canada.
   McGill Univ, Global Environm & Climate Change Ctr, Montreal, PQ H3A 0B9, Canada.
   Bishops Univ, Dept Environm Studies, Sherbrooke, PQ J1M 1Z7, Canada.
   Univ Calif Irvine, Earth Syst Sci Dept, Irvine, CA 92697 USA.
   Geol Survey Canada Atlantic, Nat Resources Canada, Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada.
   Lakehead Univ, Dept Interdisciplinary Studies, Orillia, ON L3V 0B9, Canada.
C2 UNIV MCGILL, CANADA
   UNIV MCGILL, CANADA
   UNIV BISHOPS, CANADA
   UNIV CALIF IRVINE, USA
   GEOL SURVEY CANADA ATLANTIC, CANADA
   UNIV LAKEHEAD, CANADA
IF 1.037
TC 20
UR https://archimer.ifremer.fr/doc/00264/37573/36522.pdf
LA English
DT Article
CR IMAGES V LEG 1-MD114
   IMAGES V LEG 4-MD114
BO Marion Dufresne
AB Pollen extracted from ocean and wetland sediments cored from the eastern Canadian Margin, James Bay region, and Atlantic provinces of Canada have been radiocarbon dated and results are reported here. Pollen dates from ocean sediments were compared with marine carbonate (mollusk shells or foraminifera) dates from the same core levels, dates for which validity was assessed via correlations with other cores, and for which reworking has been excluded. Pollen samples from 3 tidal wetlands were taken from levels dated with Cs-137 and Pb-210 profiles. Pollen dates from 2 additional wetlands were compared with C-14 dates of botanical macrofossils. Most pollen dates disagree with C-14 dates based on macrofossils or carbonates, with age differences typically exceeding 250 yr and reaching 4000 yr in one instance. In some cores, pollen dates show age reversals. Significant proportions of reworked pollen grains in ocean and wetland samples are associated with pollen dates that are too old. Prolonged core storage could result in pollen C-14 ages that are too young, possibly because of growth of fungi or other microbes, but more work is needed to verify this hypothesis. Despite the problems we encountered, some pollen dates are consistent with other C-14 dates from the same core levels, suggesting this dating method can work, but at present, more work is needed to understand the conflicting results obtained.
PY 2013
SO Radiocarbon
SN 0033-8222
PU Univ Arizona Dept Geosciences
VL 55
IS 2-3
UT 000325752100099
BP 1142
EP 1155
DI 10.2458/azu_js_rc.55.16274
ID 37573
ER

EF