Stratigraphy and paleolimnologic record of lower Holocene sediments in northern Lake Huron and Georgian Bay
Seismic reflection profiling and piston coring identified seismic reflectors in northern Lake Huron and Georgian Bay linked with unconformities caused by at least six reductions in lake level. In ascending stratigraphic order, these lowstands occurred at about 11 200 BP, associated with the Kirkfiel...
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crcansciencepubl:10.1139/e94-141 2024-06-23T07:53:42+00:00 Stratigraphy and paleolimnologic record of lower Holocene sediments in northern Lake Huron and Georgian Bay Rea, David K. Moore Jr., Theodore C. Lewis, C. F. Michael Mayer, Larry A. Dettman, David L. Smith, Alison J. Dobson, David M. 1994 http://dx.doi.org/10.1139/e94-141 http://www.nrcresearchpress.com/doi/pdf/10.1139/e94-141 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 31, issue 11, page 1586-1605 ISSN 0008-4077 1480-3313 journal-article 1994 crcansciencepubl https://doi.org/10.1139/e94-141 2024-05-30T08:13:48Z Seismic reflection profiling and piston coring identified seismic reflectors in northern Lake Huron and Georgian Bay linked with unconformities caused by at least six reductions in lake level. In ascending stratigraphic order, these lowstands occurred at about 11 200 BP, associated with the Kirkfield outlet from early Lake Algonquin; 10 200 – 9900 BP, associated with the post-Algonquin lake level fall; 9800 – 9050 BP, the most extreme lowstand, associated with the main Stanley – Hough draw down; and 7800 – 7450 BP. The concomitant highstands are Lake Algonquin, from about 11 200 – 10 200 BP; early Lake Mattawa, between 9600 and 9350 BP; the main Mattawa phase, 9050–7800 BP; and the Nipissing highstand, at about 4700 BP. Isotopic and paleoecological data show that all of the lowstands are characterized by cold, dilute, and isotopically very light (< −20‰) waters from the melting Laurentian ice cap. Highstands, on the other hand, are characterized by higher dissolved solid concentrations and a much smaller meltwater component. Oxygen isotope values of the waters in these lakes were −15 to −17‰ in Lake Algonquin, −13 to −14‰ for the early and middle Mattawa stages, −9 to −8‰ for the main Mattawa stage, and −7‰ for modern waters. This association of lowstands and not highstands with isotopically light waters is a new contribution to early Holocene hydrology of the Great Lakes. The Younger Dryas cool episode is coeval with the Lake Algonquin highstand and a younger cool episode is generally coeval with the Mattawa highstand. This supports the hypothesis of C.F.M. Lewis and T.W. Anderson that these large cold lakes were responsible for regional cooling during the early Holocene. Article in Journal/Newspaper Ice cap Canadian Science Publishing Canadian Journal of Earth Sciences 31 11 1586 1605 |
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Seismic reflection profiling and piston coring identified seismic reflectors in northern Lake Huron and Georgian Bay linked with unconformities caused by at least six reductions in lake level. In ascending stratigraphic order, these lowstands occurred at about 11 200 BP, associated with the Kirkfield outlet from early Lake Algonquin; 10 200 – 9900 BP, associated with the post-Algonquin lake level fall; 9800 – 9050 BP, the most extreme lowstand, associated with the main Stanley – Hough draw down; and 7800 – 7450 BP. The concomitant highstands are Lake Algonquin, from about 11 200 – 10 200 BP; early Lake Mattawa, between 9600 and 9350 BP; the main Mattawa phase, 9050–7800 BP; and the Nipissing highstand, at about 4700 BP. Isotopic and paleoecological data show that all of the lowstands are characterized by cold, dilute, and isotopically very light (< −20‰) waters from the melting Laurentian ice cap. Highstands, on the other hand, are characterized by higher dissolved solid concentrations and a much smaller meltwater component. Oxygen isotope values of the waters in these lakes were −15 to −17‰ in Lake Algonquin, −13 to −14‰ for the early and middle Mattawa stages, −9 to −8‰ for the main Mattawa stage, and −7‰ for modern waters. This association of lowstands and not highstands with isotopically light waters is a new contribution to early Holocene hydrology of the Great Lakes. The Younger Dryas cool episode is coeval with the Lake Algonquin highstand and a younger cool episode is generally coeval with the Mattawa highstand. This supports the hypothesis of C.F.M. Lewis and T.W. Anderson that these large cold lakes were responsible for regional cooling during the early Holocene. |
format |
Article in Journal/Newspaper |
author |
Rea, David K. Moore Jr., Theodore C. Lewis, C. F. Michael Mayer, Larry A. Dettman, David L. Smith, Alison J. Dobson, David M. |
spellingShingle |
Rea, David K. Moore Jr., Theodore C. Lewis, C. F. Michael Mayer, Larry A. Dettman, David L. Smith, Alison J. Dobson, David M. Stratigraphy and paleolimnologic record of lower Holocene sediments in northern Lake Huron and Georgian Bay |
author_facet |
Rea, David K. Moore Jr., Theodore C. Lewis, C. F. Michael Mayer, Larry A. Dettman, David L. Smith, Alison J. Dobson, David M. |
author_sort |
Rea, David K. |
title |
Stratigraphy and paleolimnologic record of lower Holocene sediments in northern Lake Huron and Georgian Bay |
title_short |
Stratigraphy and paleolimnologic record of lower Holocene sediments in northern Lake Huron and Georgian Bay |
title_full |
Stratigraphy and paleolimnologic record of lower Holocene sediments in northern Lake Huron and Georgian Bay |
title_fullStr |
Stratigraphy and paleolimnologic record of lower Holocene sediments in northern Lake Huron and Georgian Bay |
title_full_unstemmed |
Stratigraphy and paleolimnologic record of lower Holocene sediments in northern Lake Huron and Georgian Bay |
title_sort |
stratigraphy and paleolimnologic record of lower holocene sediments in northern lake huron and georgian bay |
publisher |
Canadian Science Publishing |
publishDate |
1994 |
url |
http://dx.doi.org/10.1139/e94-141 http://www.nrcresearchpress.com/doi/pdf/10.1139/e94-141 |
genre |
Ice cap |
genre_facet |
Ice cap |
op_source |
Canadian Journal of Earth Sciences volume 31, issue 11, page 1586-1605 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e94-141 |
container_title |
Canadian Journal of Earth Sciences |
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31 |
container_issue |
11 |
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1586 |
op_container_end_page |
1605 |
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1802645470469685248 |