Late Quaternary sedimentation in central Flemish Pass
Flemish Pass is a basin in 1000 m water depth on the continental slope off the Grand Banks of Newfoundland and has a Quaternary fill principally of turbidites. The late Quaternary history of the pass has been investigated using mid-range side-scan sonargraphs, high-resolution seismic profiles, and c...
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1992
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crcansciencepubl:10.1139/e92-047 2023-12-17T10:44:54+01:00 Late Quaternary sedimentation in central Flemish Pass Piper, David J. W. Pereira, Christopher P. G. 1992 http://dx.doi.org/10.1139/e92-047 http://www.nrcresearchpress.com/doi/pdf/10.1139/e92-047 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 29, issue 3, page 535-550 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1992 crcansciencepubl https://doi.org/10.1139/e92-047 2023-11-19T13:38:53Z Flemish Pass is a basin in 1000 m water depth on the continental slope off the Grand Banks of Newfoundland and has a Quaternary fill principally of turbidites. The late Quaternary history of the pass has been investigated using mid-range side-scan sonargraphs, high-resolution seismic profiles, and cores dated using C-14. The sequence of facies in the cores reveals six lithostratigraphic units deposited in the past 40 ka. At 15–19 ka and ?25–30 ka, sedimentation was dominated by debris-flow and turbidite deposits, together with hemipelagic deposits of similar clay-size mineralogy, derived from the Grand Banks. At other times, ice-rafting and hemipelagic sedimentation, principally of carbonate-rich sediment transported by the Labrador Current, predominated. A late Quaternary regional unconformity on the slope may reflect the effects of ice sheets reaching the shelf break, probably in the Early Wisconsinan. Late Wisconsinan resedimentation was not related to ice-marginal processes and probably resulted from iceberg impacts. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Newfoundland Canadian Journal of Earth Sciences 29 3 535 550 |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Piper, David J. W. Pereira, Christopher P. G. Late Quaternary sedimentation in central Flemish Pass |
topic_facet |
General Earth and Planetary Sciences |
description |
Flemish Pass is a basin in 1000 m water depth on the continental slope off the Grand Banks of Newfoundland and has a Quaternary fill principally of turbidites. The late Quaternary history of the pass has been investigated using mid-range side-scan sonargraphs, high-resolution seismic profiles, and cores dated using C-14. The sequence of facies in the cores reveals six lithostratigraphic units deposited in the past 40 ka. At 15–19 ka and ?25–30 ka, sedimentation was dominated by debris-flow and turbidite deposits, together with hemipelagic deposits of similar clay-size mineralogy, derived from the Grand Banks. At other times, ice-rafting and hemipelagic sedimentation, principally of carbonate-rich sediment transported by the Labrador Current, predominated. A late Quaternary regional unconformity on the slope may reflect the effects of ice sheets reaching the shelf break, probably in the Early Wisconsinan. Late Wisconsinan resedimentation was not related to ice-marginal processes and probably resulted from iceberg impacts. |
format |
Article in Journal/Newspaper |
author |
Piper, David J. W. Pereira, Christopher P. G. |
author_facet |
Piper, David J. W. Pereira, Christopher P. G. |
author_sort |
Piper, David J. W. |
title |
Late Quaternary sedimentation in central Flemish Pass |
title_short |
Late Quaternary sedimentation in central Flemish Pass |
title_full |
Late Quaternary sedimentation in central Flemish Pass |
title_fullStr |
Late Quaternary sedimentation in central Flemish Pass |
title_full_unstemmed |
Late Quaternary sedimentation in central Flemish Pass |
title_sort |
late quaternary sedimentation in central flemish pass |
publisher |
Canadian Science Publishing |
publishDate |
1992 |
url |
http://dx.doi.org/10.1139/e92-047 http://www.nrcresearchpress.com/doi/pdf/10.1139/e92-047 |
geographic |
Newfoundland |
geographic_facet |
Newfoundland |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Earth Sciences volume 29, issue 3, page 535-550 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e92-047 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
29 |
container_issue |
3 |
container_start_page |
535 |
op_container_end_page |
550 |
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1785564406279569408 |