Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10501656 | Quaternary Research | 2005 | 6 Pages |
Abstract
AMS radiocarbon cross-dating of plant debris and marine shells trapped in a lake basin on Mount St. Hilaire (Québec, Canada) provides a direct assessment of a reservoir effect totaling ca. 1800 14C years during the early stage of Champlain Sea. Pollen-based extrapolation of bottommost ages on terrestrial plant macrofossils in sediments of this lake, and of another lake nearby support an estimate of 11,100 ± 100 14C yr B.P. for marine invasion in the Central St. Lawrence River Lowlands. Results indicate a 400-1000 years younger regional chronology of ice retreat, now congruent with the one inferred from the New England varve chronology. This is a summary of a longer paper to be published in French.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geology
Authors
Pierre J.H. Richard, Serge Occhietti,