Reconstructing the Relative Ice-Flow Chronology South of Lake Mistassini in Canada from New Ice-Flow Indicator Mapping
Understanding paleo-ice flow chronology is essential for reconstructing past ice mass dynamics, interpreting the current landscape, and identifying the sources of Quaternary sediments in deglaciated regions. A recent systematic mapping of striated bedrock and streamlined landforms south of Lake Mist...
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MDPI AG
2024-10-01
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| Series: | Limnological Review |
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| Online Access: | https://www.mdpi.com/2300-7575/24/4/26 |
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| author | Mohamed El Amrani Khadija Diani Mohamed Hafedh Hamza Mohamed Elhag Said Courba Afaf Amine Moulay Ahmed Ben Driss Lahcen Ousaid Nabil Mdiker Youssef Hahou Larbi Boudad |
| author_facet | Mohamed El Amrani Khadija Diani Mohamed Hafedh Hamza Mohamed Elhag Said Courba Afaf Amine Moulay Ahmed Ben Driss Lahcen Ousaid Nabil Mdiker Youssef Hahou Larbi Boudad |
| author_sort | Mohamed El Amrani |
| collection | DOAJ |
| description | Understanding paleo-ice flow chronology is essential for reconstructing past ice mass dynamics, interpreting the current landscape, and identifying the sources of Quaternary sediments in deglaciated regions. A recent systematic mapping of striated bedrock and streamlined landforms south of Lake Mistassini in Canada reveals a complex sequence of five ice flows. The earliest flow was directed to the southeast (SE) and originated from a NE-SW ice divide located northwest of Lake Mistassini at the Last Glacial Maximum. A progressive clockwise rotation of this ice divide, likely triggered during the early deglaciation, appears to have generated ice flows toward the south–southeast (SSE) and then toward the south (S). During the later stages of deglaciation, the flow originated from the Québec–Labrador Dome, initially toward the south–southwest (SSW) and then toward the southwest (SW). This study presents new data on ice flows south of Lake Mistassini and shows that the southward and south–southeastward ice events occurred before the late stage of deglaciation. This interpretation contradicts some previous studies and will contribute to the discussion on the dynamics of the Laurentide Ice Sheet in the Mistassini area and support mineral exploration efforts in the region. |
| format | Article |
| id | doaj-art-f805d79338e149d09018e74c8c7e6fd9 |
| institution | Kabale University |
| issn | 2300-7575 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
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| series | Limnological Review |
| spelling | doaj-art-f805d79338e149d09018e74c8c7e6fd92024-12-27T14:36:23ZengMDPI AGLimnological Review2300-75752024-10-0124445046510.3390/limnolrev24040026Reconstructing the Relative Ice-Flow Chronology South of Lake Mistassini in Canada from New Ice-Flow Indicator MappingMohamed El Amrani0Khadija Diani1Mohamed Hafedh Hamza2Mohamed Elhag3Said Courba4Afaf Amine5Moulay Ahmed Ben Driss6Lahcen Ousaid7Nabil Mdiker8Youssef Hahou9Larbi Boudad10Geosciences Laboratory, Department of Geology, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP. 1014 R.P., Rabat 10000, MoroccoLGEE Laboratory, Department of Earth Sciences, Faculty of Sciences, Mohammed V-University Agdal, Rabat 10000, MoroccoGeomatics Section, Department of Geology, Faculty of Science of Tunis, University of Tunis El Manar, Tunis CP 2092, TunisiaDepartment of Water Resources, Faculty of Environmental Sciences, King Abdulaziz University, Jeddah 21589, Saudi ArabiaGeosciences Laboratory, Department of Geology, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP. 1014 R.P., Rabat 10000, MoroccoGeosciences Laboratory, Department of Geology, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP. 1014 R.P., Rabat 10000, MoroccoGeosciences Laboratory, Department of Geology, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP. 1014 R.P., Rabat 10000, MoroccoGeosciences Laboratory, Department of Geology, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP. 1014 R.P., Rabat 10000, MoroccoGeosciences Laboratory, Department of Geology, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP. 1014 R.P., Rabat 10000, MoroccoGeosciences Laboratory, Department of Geology, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP. 1014 R.P., Rabat 10000, MoroccoGeosciences Laboratory, Department of Geology, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP. 1014 R.P., Rabat 10000, MoroccoUnderstanding paleo-ice flow chronology is essential for reconstructing past ice mass dynamics, interpreting the current landscape, and identifying the sources of Quaternary sediments in deglaciated regions. A recent systematic mapping of striated bedrock and streamlined landforms south of Lake Mistassini in Canada reveals a complex sequence of five ice flows. The earliest flow was directed to the southeast (SE) and originated from a NE-SW ice divide located northwest of Lake Mistassini at the Last Glacial Maximum. A progressive clockwise rotation of this ice divide, likely triggered during the early deglaciation, appears to have generated ice flows toward the south–southeast (SSE) and then toward the south (S). During the later stages of deglaciation, the flow originated from the Québec–Labrador Dome, initially toward the south–southwest (SSW) and then toward the southwest (SW). This study presents new data on ice flows south of Lake Mistassini and shows that the southward and south–southeastward ice events occurred before the late stage of deglaciation. This interpretation contradicts some previous studies and will contribute to the discussion on the dynamics of the Laurentide Ice Sheet in the Mistassini area and support mineral exploration efforts in the region.https://www.mdpi.com/2300-7575/24/4/26ice flowrelative chronologyice divideLaurentide Ice SheetLake Mistassini |
| spellingShingle | Mohamed El Amrani Khadija Diani Mohamed Hafedh Hamza Mohamed Elhag Said Courba Afaf Amine Moulay Ahmed Ben Driss Lahcen Ousaid Nabil Mdiker Youssef Hahou Larbi Boudad Reconstructing the Relative Ice-Flow Chronology South of Lake Mistassini in Canada from New Ice-Flow Indicator Mapping Limnological Review ice flow relative chronology ice divide Laurentide Ice Sheet Lake Mistassini |
| title | Reconstructing the Relative Ice-Flow Chronology South of Lake Mistassini in Canada from New Ice-Flow Indicator Mapping |
| title_full | Reconstructing the Relative Ice-Flow Chronology South of Lake Mistassini in Canada from New Ice-Flow Indicator Mapping |
| title_fullStr | Reconstructing the Relative Ice-Flow Chronology South of Lake Mistassini in Canada from New Ice-Flow Indicator Mapping |
| title_full_unstemmed | Reconstructing the Relative Ice-Flow Chronology South of Lake Mistassini in Canada from New Ice-Flow Indicator Mapping |
| title_short | Reconstructing the Relative Ice-Flow Chronology South of Lake Mistassini in Canada from New Ice-Flow Indicator Mapping |
| title_sort | reconstructing the relative ice flow chronology south of lake mistassini in canada from new ice flow indicator mapping |
| topic | ice flow relative chronology ice divide Laurentide Ice Sheet Lake Mistassini |
| url | https://www.mdpi.com/2300-7575/24/4/26 |
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