کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10501656 | 944883 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
14C chronology for ice retreat and inception of Champlain Sea in the St. Lawrence Lowlands, Canada
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: 14C chronology for ice retreat and inception of Champlain Sea in the St. Lawrence Lowlands, Canada 14C chronology for ice retreat and inception of Champlain Sea in the St. Lawrence Lowlands, Canada](/preview/png/10501656.png)
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Quaternary Research - Volume 63, Issue 3, May 2005, Pages 353-358
Journal: Quaternary Research - Volume 63, Issue 3, May 2005, Pages 353-358
نویسندگان
Pierre J.H. Richard, Serge Occhietti,