Post-glacial uplift and substrate age at Cape Henrietta Maria, southeastern Hudson Bay, Canada
As a basis for future ecological and biogeographical studies, the post-glacial emergence history of Cape Henrietta Maria was required. This was obtained by fitting a post-glacial emergence curve to a number of radiocarbon dated marine strandlines of known elevation. Analysis shows that the elevation...
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1970
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Online Access: | http://dx.doi.org/10.1139/e70-029 http://www.nrcresearchpress.com/doi/pdf/10.1139/e70-029 |
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crcansciencepubl:10.1139/e70-029 2023-12-17T10:26:12+01:00 Post-glacial uplift and substrate age at Cape Henrietta Maria, southeastern Hudson Bay, Canada Webber, P. J. Richardson, J. W. Andrews, J. T. 1970 http://dx.doi.org/10.1139/e70-029 http://www.nrcresearchpress.com/doi/pdf/10.1139/e70-029 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 7, issue 2, page 317-325 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1970 crcansciencepubl https://doi.org/10.1139/e70-029 2023-11-19T13:39:15Z As a basis for future ecological and biogeographical studies, the post-glacial emergence history of Cape Henrietta Maria was required. This was obtained by fitting a post-glacial emergence curve to a number of radiocarbon dated marine strandlines of known elevation. Analysis shows that the elevation of lower samples is critical for a reasonable prediction of higher relative sea levels. This emergence curve suggests that during the last 1000 y uplift has been about 1.2 m per century. Extrapolation to likely dates of deglaciation (8000−7000 BP) indicates a maximum marine inundation of > 300 m. The current rate of uplift, and the hypothetical elevation of the marine limit are the highest estimations to date for eastern and arctic Canada and support the hypothesis that a center of uplift and ice-loading is situated in southeastern Hudson Bay and northern James Bay. The derived emergence curve was used to construct an isochrone map of Polar Bear Park, in eastern northern Ontario. This map provides the basis for future biological studies of community migration and succession and demonstrates that the uplift curve is a useful chronological tool. Article in Journal/Newspaper Arctic Cape Henrietta Maria Hudson Bay James Bay Canadian Science Publishing (via Crossref) Arctic Hudson Bay Canada Hudson Cape Henrietta Maria ENVELOPE(-82.333,-82.333,55.150,55.150) Canadian Journal of Earth Sciences 7 2 317 325 |
institution |
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 Webber, P. J. Richardson, J. W. Andrews, J. T. Post-glacial uplift and substrate age at Cape Henrietta Maria, southeastern Hudson Bay, Canada |
topic_facet |
General Earth and Planetary Sciences |
description |
As a basis for future ecological and biogeographical studies, the post-glacial emergence history of Cape Henrietta Maria was required. This was obtained by fitting a post-glacial emergence curve to a number of radiocarbon dated marine strandlines of known elevation. Analysis shows that the elevation of lower samples is critical for a reasonable prediction of higher relative sea levels. This emergence curve suggests that during the last 1000 y uplift has been about 1.2 m per century. Extrapolation to likely dates of deglaciation (8000−7000 BP) indicates a maximum marine inundation of > 300 m. The current rate of uplift, and the hypothetical elevation of the marine limit are the highest estimations to date for eastern and arctic Canada and support the hypothesis that a center of uplift and ice-loading is situated in southeastern Hudson Bay and northern James Bay. The derived emergence curve was used to construct an isochrone map of Polar Bear Park, in eastern northern Ontario. This map provides the basis for future biological studies of community migration and succession and demonstrates that the uplift curve is a useful chronological tool. |
format |
Article in Journal/Newspaper |
author |
Webber, P. J. Richardson, J. W. Andrews, J. T. |
author_facet |
Webber, P. J. Richardson, J. W. Andrews, J. T. |
author_sort |
Webber, P. J. |
title |
Post-glacial uplift and substrate age at Cape Henrietta Maria, southeastern Hudson Bay, Canada |
title_short |
Post-glacial uplift and substrate age at Cape Henrietta Maria, southeastern Hudson Bay, Canada |
title_full |
Post-glacial uplift and substrate age at Cape Henrietta Maria, southeastern Hudson Bay, Canada |
title_fullStr |
Post-glacial uplift and substrate age at Cape Henrietta Maria, southeastern Hudson Bay, Canada |
title_full_unstemmed |
Post-glacial uplift and substrate age at Cape Henrietta Maria, southeastern Hudson Bay, Canada |
title_sort |
post-glacial uplift and substrate age at cape henrietta maria, southeastern hudson bay, canada |
publisher |
Canadian Science Publishing |
publishDate |
1970 |
url |
http://dx.doi.org/10.1139/e70-029 http://www.nrcresearchpress.com/doi/pdf/10.1139/e70-029 |
long_lat |
ENVELOPE(-82.333,-82.333,55.150,55.150) |
geographic |
Arctic Hudson Bay Canada Hudson Cape Henrietta Maria |
geographic_facet |
Arctic Hudson Bay Canada Hudson Cape Henrietta Maria |
genre |
Arctic Cape Henrietta Maria Hudson Bay James Bay |
genre_facet |
Arctic Cape Henrietta Maria Hudson Bay James Bay |
op_source |
Canadian Journal of Earth Sciences volume 7, issue 2, page 317-325 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e70-029 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
7 |
container_issue |
2 |
container_start_page |
317 |
op_container_end_page |
325 |
_version_ |
1785577914279919616 |