Illinoian to Late Wisconsinan stratigraphy at Woodbridge, Ontario
Near Woodbridge, northwest of Toronto, Ontario, a 15 metre-high railroad cut and associated borrow pit, first excavated in 1962, exposed a multiple till sequence and intervening fossiliferous sediments. Work over the next 35 years revealed that Illinoian York Till, early Wisconsinan Sunnybrook Till,...
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crcansciencepubl:10.1139/e00-108 2023-12-17T10:51:12+01:00 Illinoian to Late Wisconsinan stratigraphy at Woodbridge, Ontario Karrow, P F McAndrews, J H Miller, B B Morgan, A V Seymour, K L White, O L 2001 http://dx.doi.org/10.1139/e00-108 http://www.nrcresearchpress.com/doi/pdf/10.1139/e00-108 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 38, issue 6, page 921-942 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 2001 crcansciencepubl https://doi.org/10.1139/e00-108 2023-11-19T13:38:36Z Near Woodbridge, northwest of Toronto, Ontario, a 15 metre-high railroad cut and associated borrow pit, first excavated in 1962, exposed a multiple till sequence and intervening fossiliferous sediments. Work over the next 35 years revealed that Illinoian York Till, early Wisconsinan Sunnybrook Till, and late Wisconsinan Humber till, Halton Till, and Wildfield Till are interbedded with fossiliferous sediments equivalent to the Sangamonian Don Formation, early Wisconsinan Scarborough Formation (>50 ka BP), and middle Wisconsinan Thorncliffe Formation (45 ka BP). A complex periglacial record displays multistage fossil frost wedges, indicating intervals of severe climate in late Illinoian and early Wisconsinan time. Cored boreholes indicate deep gravel below and a till on Ordovician shale bedrock (Georgian Bay Formation). Vertebrates, molluscs, ostracodes, insects, and plants (diatoms, wood, seeds, pollen) indicate mostly cool conditions (boreal to tundra) for interstadial sediments. Interglacial conditions are represented by vertebrates, molluscs, and plants above York Till. Many taxa are new to the Quaternary of the Toronto area. Article in Journal/Newspaper Tundra Canadian Science Publishing (via Crossref) Scarborough ENVELOPE(-96.000,-96.000,60.000,60.000) Canadian Journal of Earth Sciences 38 6 921 942 |
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 Karrow, P F McAndrews, J H Miller, B B Morgan, A V Seymour, K L White, O L Illinoian to Late Wisconsinan stratigraphy at Woodbridge, Ontario |
topic_facet |
General Earth and Planetary Sciences |
description |
Near Woodbridge, northwest of Toronto, Ontario, a 15 metre-high railroad cut and associated borrow pit, first excavated in 1962, exposed a multiple till sequence and intervening fossiliferous sediments. Work over the next 35 years revealed that Illinoian York Till, early Wisconsinan Sunnybrook Till, and late Wisconsinan Humber till, Halton Till, and Wildfield Till are interbedded with fossiliferous sediments equivalent to the Sangamonian Don Formation, early Wisconsinan Scarborough Formation (>50 ka BP), and middle Wisconsinan Thorncliffe Formation (45 ka BP). A complex periglacial record displays multistage fossil frost wedges, indicating intervals of severe climate in late Illinoian and early Wisconsinan time. Cored boreholes indicate deep gravel below and a till on Ordovician shale bedrock (Georgian Bay Formation). Vertebrates, molluscs, ostracodes, insects, and plants (diatoms, wood, seeds, pollen) indicate mostly cool conditions (boreal to tundra) for interstadial sediments. Interglacial conditions are represented by vertebrates, molluscs, and plants above York Till. Many taxa are new to the Quaternary of the Toronto area. |
format |
Article in Journal/Newspaper |
author |
Karrow, P F McAndrews, J H Miller, B B Morgan, A V Seymour, K L White, O L |
author_facet |
Karrow, P F McAndrews, J H Miller, B B Morgan, A V Seymour, K L White, O L |
author_sort |
Karrow, P F |
title |
Illinoian to Late Wisconsinan stratigraphy at Woodbridge, Ontario |
title_short |
Illinoian to Late Wisconsinan stratigraphy at Woodbridge, Ontario |
title_full |
Illinoian to Late Wisconsinan stratigraphy at Woodbridge, Ontario |
title_fullStr |
Illinoian to Late Wisconsinan stratigraphy at Woodbridge, Ontario |
title_full_unstemmed |
Illinoian to Late Wisconsinan stratigraphy at Woodbridge, Ontario |
title_sort |
illinoian to late wisconsinan stratigraphy at woodbridge, ontario |
publisher |
Canadian Science Publishing |
publishDate |
2001 |
url |
http://dx.doi.org/10.1139/e00-108 http://www.nrcresearchpress.com/doi/pdf/10.1139/e00-108 |
long_lat |
ENVELOPE(-96.000,-96.000,60.000,60.000) |
geographic |
Scarborough |
geographic_facet |
Scarborough |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Canadian Journal of Earth Sciences volume 38, issue 6, page 921-942 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e00-108 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
38 |
container_issue |
6 |
container_start_page |
921 |
op_container_end_page |
942 |
_version_ |
1785576384534413312 |