Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history
Sediment core ARC4-BN05 collected from the Canada Basin, Arctic Ocean, covers the late to middle Quaternary (Marine Isotope Stage – MIS – 1–15, ca. 0.5–0.6 Ma) as estimated by correlation to earlier proposed Arctic Ocean stratigraphies and AMS<sup>14</sup>C dating of the youngest sedimen...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2017-05-01
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| Series: | Climate of the Past |
| Online Access: | http://www.clim-past.net/13/511/2017/cp-13-511-2017.pdf |
| _version_ | 1819296008080719872 |
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| author | L. Dong Y. Liu X. Shi L. Polyak Y. Huang X. Fang J. Liu J. Zou K. Wang F. Sun X. Wang |
| author_facet | L. Dong Y. Liu X. Shi L. Polyak Y. Huang X. Fang J. Liu J. Zou K. Wang F. Sun X. Wang |
| author_sort | L. Dong |
| collection | DOAJ |
| description | Sediment core ARC4-BN05 collected from the Canada Basin, Arctic
Ocean, covers the late to middle Quaternary (Marine Isotope Stage – MIS – 1–15,
ca. 0.5–0.6 Ma) as estimated by correlation to earlier proposed Arctic
Ocean stratigraphies and AMS<sup>14</sup>C dating of the youngest sediments.
Detailed examination of clay and bulk mineralogy along with grain size,
content of Ca and Mn, and planktic foraminiferal numbers in core ARC4–BN05
provides important new information about sedimentary environments and
provenance. We use increased contents of coarse debris as an indicator of
glacier collapse events at the margins of the western Arctic Ocean, and
identify the provenance of these events from mineralogical composition.
Notably, peaks of dolomite debris, including large dropstones, track the
Laurentide Ice Sheet (LIS) discharge events to the Arctic Ocean. Major LIS
inputs occurred during the stratigraphic intervals estimated as MIS 3,
intra-MIS 5 and 7 events, MIS 8, and MIS 10. Inputs from the East Siberian
Ice Sheet (ESIS) are inferred from peaks of smectite, kaolinite, and chlorite
associated with coarse sediment. Major ESIS sedimentary events occurred in
the intervals estimated as MIS 4, MIS 6 and MIS 12. Differences in LIS
vs. ESIS inputs can be explained by ice-sheet configurations at different sea
levels, sediment delivery mechanisms (iceberg rafting, suspension plumes, and
debris flows), and surface circulation. A long-term change in the pattern of
sediment inputs, with an apparent step change near the estimated MIS 7–8
boundary (ca. 0.25 Ma), presumably indicates an overall glacial expansion at
the western Arctic margins, especially in North America. |
| first_indexed | 2024-12-24T04:51:16Z |
| format | Article |
| id | doaj.art-144e22b4cd964e5b80adcedb9c5a450b |
| institution | Directory Open Access Journal |
| issn | 1814-9324 1814-9332 |
| language | English |
| last_indexed | 2024-12-24T04:51:16Z |
| publishDate | 2017-05-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Climate of the Past |
| spelling | doaj.art-144e22b4cd964e5b80adcedb9c5a450b2022-12-21T17:14:32ZengCopernicus PublicationsClimate of the Past1814-93241814-93322017-05-0113551153110.5194/cp-13-511-2017Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial historyL. Dong0Y. Liu1X. Shi2L. Polyak3Y. Huang4X. Fang5J. Liu6J. Zou7K. Wang8F. Sun9X. Wang10Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, ChinaKey Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, ChinaKey Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, ChinaByrd Polar and Climate Research Center, The Ohio State University, Columbus, 43210, USAKey Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, ChinaKey Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, ChinaKey Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, ChinaKey Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, ChinaKey Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, ChinaKey Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, ChinaKey Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Qingdao, 266100, ChinaSediment core ARC4-BN05 collected from the Canada Basin, Arctic Ocean, covers the late to middle Quaternary (Marine Isotope Stage – MIS – 1–15, ca. 0.5–0.6 Ma) as estimated by correlation to earlier proposed Arctic Ocean stratigraphies and AMS<sup>14</sup>C dating of the youngest sediments. Detailed examination of clay and bulk mineralogy along with grain size, content of Ca and Mn, and planktic foraminiferal numbers in core ARC4–BN05 provides important new information about sedimentary environments and provenance. We use increased contents of coarse debris as an indicator of glacier collapse events at the margins of the western Arctic Ocean, and identify the provenance of these events from mineralogical composition. Notably, peaks of dolomite debris, including large dropstones, track the Laurentide Ice Sheet (LIS) discharge events to the Arctic Ocean. Major LIS inputs occurred during the stratigraphic intervals estimated as MIS 3, intra-MIS 5 and 7 events, MIS 8, and MIS 10. Inputs from the East Siberian Ice Sheet (ESIS) are inferred from peaks of smectite, kaolinite, and chlorite associated with coarse sediment. Major ESIS sedimentary events occurred in the intervals estimated as MIS 4, MIS 6 and MIS 12. Differences in LIS vs. ESIS inputs can be explained by ice-sheet configurations at different sea levels, sediment delivery mechanisms (iceberg rafting, suspension plumes, and debris flows), and surface circulation. A long-term change in the pattern of sediment inputs, with an apparent step change near the estimated MIS 7–8 boundary (ca. 0.25 Ma), presumably indicates an overall glacial expansion at the western Arctic margins, especially in North America.http://www.clim-past.net/13/511/2017/cp-13-511-2017.pdf |
| spellingShingle | L. Dong Y. Liu X. Shi L. Polyak Y. Huang X. Fang J. Liu J. Zou K. Wang F. Sun X. Wang Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history Climate of the Past |
| title | Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history |
| title_full | Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history |
| title_fullStr | Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history |
| title_full_unstemmed | Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history |
| title_short | Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history |
| title_sort | sedimentary record from the canada basin arctic ocean implications for late to middle pleistocene glacial history |
| url | http://www.clim-past.net/13/511/2017/cp-13-511-2017.pdf |
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