Relative Sea Level Chronology Determined From Raised Marine Sediments and Coastal Isolation Basins, Northeastern Ellesmere Island, Arctic Canada
A new relative sea level curve for the Robeson Channel area contrasts with previously published curves for the area by inferring that rapid emergence may have commenced at ca. 7400 BP, as much as 1200 yr earlier than previously predicted. Subsequently, uplift may have occurred at much lower rates fr...
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ftunivmassamh:oai:works.bepress.com:raymond_bradley-1107 2023-05-15T15:02:59+02:00 Relative Sea Level Chronology Determined From Raised Marine Sediments and Coastal Isolation Basins, Northeastern Ellesmere Island, Arctic Canada Retelle, Michael J. Bradley, Raymond S. Stuckenrath, Robert 1989-01-01T08:00:00Z application/pdf https://works.bepress.com/raymond_bradley/54 https://works.bepress.com/cgi/viewcontent.cgi?article=1107&context=raymond_bradley unknown SelectedWorks https://works.bepress.com/raymond_bradley/54 https://works.bepress.com/cgi/viewcontent.cgi?article=1107&context=raymond_bradley Raymond S Bradley Earth Sciences text 1989 ftunivmassamh 2022-01-09T20:14:49Z A new relative sea level curve for the Robeson Channel area contrasts with previously published curves for the area by inferring that rapid emergence may have commenced at ca. 7400 BP, as much as 1200 yr earlier than previously predicted. Subsequently, uplift may have occurred at much lower rates from ca. 6000 BP to present. A comparison of shell dates used for the relative sea level curve and dates on disseminated total organic carbon (TOC) fractiop from lacustrine and marine sediments from sediment cores from emerged coastal lakes shows wide discrepancies. Furthermore, several inifmite TOC dates (>27,7SO to >40,600 BP) from glaciomarine sediments may imply that the region was ice-free during the last glacial maximum, but the validity of the TOC dates from the sediment cores is questionable due to variable contamination with redeposited detrital organic matter. Text Arctic Ellesmere Island Robeson channel University of Massachusetts: ScholarWorks@UMass Amherst Arctic Canada Ellesmere Island Robeson Channel ENVELOPE(-61.473,-61.473,81.995,81.995) |
institution |
Open Polar |
collection |
University of Massachusetts: ScholarWorks@UMass Amherst |
op_collection_id |
ftunivmassamh |
language |
unknown |
topic |
Earth Sciences |
spellingShingle |
Earth Sciences Retelle, Michael J. Bradley, Raymond S. Stuckenrath, Robert Relative Sea Level Chronology Determined From Raised Marine Sediments and Coastal Isolation Basins, Northeastern Ellesmere Island, Arctic Canada |
topic_facet |
Earth Sciences |
description |
A new relative sea level curve for the Robeson Channel area contrasts with previously published curves for the area by inferring that rapid emergence may have commenced at ca. 7400 BP, as much as 1200 yr earlier than previously predicted. Subsequently, uplift may have occurred at much lower rates from ca. 6000 BP to present. A comparison of shell dates used for the relative sea level curve and dates on disseminated total organic carbon (TOC) fractiop from lacustrine and marine sediments from sediment cores from emerged coastal lakes shows wide discrepancies. Furthermore, several inifmite TOC dates (>27,7SO to >40,600 BP) from glaciomarine sediments may imply that the region was ice-free during the last glacial maximum, but the validity of the TOC dates from the sediment cores is questionable due to variable contamination with redeposited detrital organic matter. |
format |
Text |
author |
Retelle, Michael J. Bradley, Raymond S. Stuckenrath, Robert |
author_facet |
Retelle, Michael J. Bradley, Raymond S. Stuckenrath, Robert |
author_sort |
Retelle, Michael J. |
title |
Relative Sea Level Chronology Determined From Raised Marine Sediments and Coastal Isolation Basins, Northeastern Ellesmere Island, Arctic Canada |
title_short |
Relative Sea Level Chronology Determined From Raised Marine Sediments and Coastal Isolation Basins, Northeastern Ellesmere Island, Arctic Canada |
title_full |
Relative Sea Level Chronology Determined From Raised Marine Sediments and Coastal Isolation Basins, Northeastern Ellesmere Island, Arctic Canada |
title_fullStr |
Relative Sea Level Chronology Determined From Raised Marine Sediments and Coastal Isolation Basins, Northeastern Ellesmere Island, Arctic Canada |
title_full_unstemmed |
Relative Sea Level Chronology Determined From Raised Marine Sediments and Coastal Isolation Basins, Northeastern Ellesmere Island, Arctic Canada |
title_sort |
relative sea level chronology determined from raised marine sediments and coastal isolation basins, northeastern ellesmere island, arctic canada |
publisher |
SelectedWorks |
publishDate |
1989 |
url |
https://works.bepress.com/raymond_bradley/54 https://works.bepress.com/cgi/viewcontent.cgi?article=1107&context=raymond_bradley |
long_lat |
ENVELOPE(-61.473,-61.473,81.995,81.995) |
geographic |
Arctic Canada Ellesmere Island Robeson Channel |
geographic_facet |
Arctic Canada Ellesmere Island Robeson Channel |
genre |
Arctic Ellesmere Island Robeson channel |
genre_facet |
Arctic Ellesmere Island Robeson channel |
op_source |
Raymond S Bradley |
op_relation |
https://works.bepress.com/raymond_bradley/54 https://works.bepress.com/cgi/viewcontent.cgi?article=1107&context=raymond_bradley |
_version_ |
1766334899428524032 |