Holocene sea levels, paleoceanography, and late glacial ice configuration near the Northumberland Strait, Maritime Provinces
Work on new cores from old core sites in Baie Verte, New Brunswick, led to the identification of submerged salt-marsh peats, reported earlier as freshwater ones. A comprehensive sea-level curve, between 9 and 15 m below present, is based on marsh foraminiferal assemblages. These data indicate that b...
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1987
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Online Access: | http://dx.doi.org/10.1139/e87-065 http://www.nrcresearchpress.com/doi/pdf/10.1139/e87-065 |
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crcansciencepubl:10.1139/e87-065 2023-12-17T10:27:38+01:00 Holocene sea levels, paleoceanography, and late glacial ice configuration near the Northumberland Strait, Maritime Provinces Scott, David B. Medioli, Franco S. Miller, Ann A. L. 1987 http://dx.doi.org/10.1139/e87-065 http://www.nrcresearchpress.com/doi/pdf/10.1139/e87-065 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 24, issue 4, page 668-675 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1987 crcansciencepubl https://doi.org/10.1139/e87-065 2023-11-19T13:39:25Z Work on new cores from old core sites in Baie Verte, New Brunswick, led to the identification of submerged salt-marsh peats, reported earlier as freshwater ones. A comprehensive sea-level curve, between 9 and 15 m below present, is based on marsh foraminiferal assemblages. These data indicate that between 4500 and 5400 BP relative sea-level (RSL) rise was comparatively slow (about 10 cm/100 years); the rate increased dramatically between 4500 and 4000 BP (1 m/100 years) and decreased between 2000 and 4000 BP to its present rate of 15 cm/100 years. We suggest RSL was falling before 5400 BP and that the sequence in our deepest core is similar to some observed in the Bay of Fundy and Nova Scotian Atlantic coast where early RSL fall is documented. To account for this sea-level record and others nearby we suggest that the ice history here is complex, with three separate ice caps thinning towards this area in late glacial times.Earlier work also indicated a number of sediment sequences barren of benthonic foraminifera, suggesting a complex marine–freshwater history for the area. The study of new cores containing the same sequences indicates no barren zones but a simple transgressive sequence with a warm-water calcareous fauna followed by an agglutinated transitional estuarine foraminiferal fauna. Article in Journal/Newspaper Baie Verte Canadian Science Publishing (via Crossref) Verte ENVELOPE(141.192,141.192,-66.740,-66.740) Baie Verte ENVELOPE(-56.182,-56.182,49.933,49.933) Canadian Journal of Earth Sciences 24 4 668 675 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Scott, David B. Medioli, Franco S. Miller, Ann A. L. Holocene sea levels, paleoceanography, and late glacial ice configuration near the Northumberland Strait, Maritime Provinces |
topic_facet |
General Earth and Planetary Sciences |
description |
Work on new cores from old core sites in Baie Verte, New Brunswick, led to the identification of submerged salt-marsh peats, reported earlier as freshwater ones. A comprehensive sea-level curve, between 9 and 15 m below present, is based on marsh foraminiferal assemblages. These data indicate that between 4500 and 5400 BP relative sea-level (RSL) rise was comparatively slow (about 10 cm/100 years); the rate increased dramatically between 4500 and 4000 BP (1 m/100 years) and decreased between 2000 and 4000 BP to its present rate of 15 cm/100 years. We suggest RSL was falling before 5400 BP and that the sequence in our deepest core is similar to some observed in the Bay of Fundy and Nova Scotian Atlantic coast where early RSL fall is documented. To account for this sea-level record and others nearby we suggest that the ice history here is complex, with three separate ice caps thinning towards this area in late glacial times.Earlier work also indicated a number of sediment sequences barren of benthonic foraminifera, suggesting a complex marine–freshwater history for the area. The study of new cores containing the same sequences indicates no barren zones but a simple transgressive sequence with a warm-water calcareous fauna followed by an agglutinated transitional estuarine foraminiferal fauna. |
format |
Article in Journal/Newspaper |
author |
Scott, David B. Medioli, Franco S. Miller, Ann A. L. |
author_facet |
Scott, David B. Medioli, Franco S. Miller, Ann A. L. |
author_sort |
Scott, David B. |
title |
Holocene sea levels, paleoceanography, and late glacial ice configuration near the Northumberland Strait, Maritime Provinces |
title_short |
Holocene sea levels, paleoceanography, and late glacial ice configuration near the Northumberland Strait, Maritime Provinces |
title_full |
Holocene sea levels, paleoceanography, and late glacial ice configuration near the Northumberland Strait, Maritime Provinces |
title_fullStr |
Holocene sea levels, paleoceanography, and late glacial ice configuration near the Northumberland Strait, Maritime Provinces |
title_full_unstemmed |
Holocene sea levels, paleoceanography, and late glacial ice configuration near the Northumberland Strait, Maritime Provinces |
title_sort |
holocene sea levels, paleoceanography, and late glacial ice configuration near the northumberland strait, maritime provinces |
publisher |
Canadian Science Publishing |
publishDate |
1987 |
url |
http://dx.doi.org/10.1139/e87-065 http://www.nrcresearchpress.com/doi/pdf/10.1139/e87-065 |
long_lat |
ENVELOPE(141.192,141.192,-66.740,-66.740) ENVELOPE(-56.182,-56.182,49.933,49.933) |
geographic |
Verte Baie Verte |
geographic_facet |
Verte Baie Verte |
genre |
Baie Verte |
genre_facet |
Baie Verte |
op_source |
Canadian Journal of Earth Sciences volume 24, issue 4, page 668-675 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e87-065 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
24 |
container_issue |
4 |
container_start_page |
668 |
op_container_end_page |
675 |
_version_ |
1785579558185992192 |