(Table 1) Age determination of sediment cores of the Labrador Sea
A close look at the sedimentology of Heinrich event 4 from the northwest Labrador Sea indicates that an extended ice margin, perhaps greater than before Heinrich events 1 or 2 (H-1 and H-2), existed in the Hudson Strait region pre-Heinrich event 4 (H-4) and, that on the basis of characteristics of t...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.856936 2023-05-15T14:27:29+02:00 (Table 1) Age determination of sediment cores of the Labrador Sea Kirby, Mathew E Andrews, John T MEDIAN LATITUDE: 62.415223 * MEDIAN LONGITUDE: -57.921000 * SOUTH-BOUND LATITUDE: 61.269000 * WEST-BOUND LONGITUDE: -59.450000 * NORTH-BOUND LATITUDE: 63.460000 * EAST-BOUND LONGITUDE: -55.978000 * MINIMUM DEPTH, sediment/rock: 0.510 m * MAXIMUM DEPTH, sediment/rock: 9.735 m 1999-01-15 text/tab-separated-values, 78 data points https://doi.pangaea.de/10.1594/PANGAEA.856936 https://doi.org/10.1594/PANGAEA.856936 en eng PANGAEA Manley, William F; Jennings, Anne E (1996): Radiocarbon date list VIII: Eastern Canadian Arctic, Labrador, northern Wuebec, East Greenland Shelf, Iceland Shelf, and Antarctica. INSTAAR Occasional Paper, University of Colorado, Boulder, 50, 163 pp https://doi.pangaea.de/10.1594/PANGAEA.856936 https://doi.org/10.1594/PANGAEA.856936 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kirby, Mathew E; Andrews, John T (1999): Mid-Wisconsin Laurentide ice sheet growth and decay: Implications for Heinrich events 3 and 4. Paleoceanography, 14(2), 211-223, https://doi.org/10.1029/1998PA900019 Age 14C AMS 14C milieu/reservoir corrected (-450 yr) dated dated material dated standard deviation Calendar age standard deviation Depth bottom/max sediment/rock top/min Elevation of event Event label HU75009-IV-054 HU75009-IV-056 HU87-033-009 Labrador Sea Latitude of event Longitude of event PC Piston corer Dataset 1999 ftpangaea https://doi.org/10.1594/PANGAEA.856936 https://doi.org/10.1029/1998PA900019 2023-01-20T09:06:42Z A close look at the sedimentology of Heinrich event 4 from the northwest Labrador Sea indicates that an extended ice margin, perhaps greater than before Heinrich events 1 or 2 (H-1 and H-2), existed in the Hudson Strait region pre-Heinrich event 4 (H-4) and, that on the basis of characteristics of the sediment unit, Heinrich event-4 was different than Heinrich events 1 or 2 (i.e., larger ice sheet collapse(?), longer duration(?), "dirtier" icebergs(?)). Other data from across the southern and eastern margin of the Laurentide Ice Sheet, as well as Greenland and the North Atlantic, support this interpretation, possibly indicating a relative mid-Wisconsin glacial maximum pre-Heinrich event 4. Many of these data also indicate that Heinrich event 4 (35 ka) resulted in serious climatic and oceanographic reorganizations. We suggest that Heinrich event 4 gutted the Hudson Strait, leaving it devoid of ice for Heinrich event 3. We further hypothesize that Heinrich event 3 did not originate from axial ice transport along the Hudson Strait; thus Heinrich event 3 may be more analogous to the proposed northward advancing ice from Ungava Bay during Heinrich event 0 than to the more typical down-the-strait flow during H-1, H-2, and H-4. Consequently, the climatic and oceanographic impacts resulting from Heinrich events are highly susceptible to the type, origin, and magnitude of ice sheet collapse, something which varied per Heinrich event during the last glacial period. Dataset Arctic Greenland Hudson Strait Ice Sheet Labrador Sea North Atlantic Ungava Bay PANGAEA - Data Publisher for Earth & Environmental Science Greenland Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Ungava Bay ENVELOPE(-67.489,-67.489,59.498,59.498) ENVELOPE(-59.450000,-55.978000,63.460000,61.269000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Age 14C AMS 14C milieu/reservoir corrected (-450 yr) dated dated material dated standard deviation Calendar age standard deviation Depth bottom/max sediment/rock top/min Elevation of event Event label HU75009-IV-054 HU75009-IV-056 HU87-033-009 Labrador Sea Latitude of event Longitude of event PC Piston corer |
spellingShingle |
Age 14C AMS 14C milieu/reservoir corrected (-450 yr) dated dated material dated standard deviation Calendar age standard deviation Depth bottom/max sediment/rock top/min Elevation of event Event label HU75009-IV-054 HU75009-IV-056 HU87-033-009 Labrador Sea Latitude of event Longitude of event PC Piston corer Kirby, Mathew E Andrews, John T (Table 1) Age determination of sediment cores of the Labrador Sea |
topic_facet |
Age 14C AMS 14C milieu/reservoir corrected (-450 yr) dated dated material dated standard deviation Calendar age standard deviation Depth bottom/max sediment/rock top/min Elevation of event Event label HU75009-IV-054 HU75009-IV-056 HU87-033-009 Labrador Sea Latitude of event Longitude of event PC Piston corer |
description |
A close look at the sedimentology of Heinrich event 4 from the northwest Labrador Sea indicates that an extended ice margin, perhaps greater than before Heinrich events 1 or 2 (H-1 and H-2), existed in the Hudson Strait region pre-Heinrich event 4 (H-4) and, that on the basis of characteristics of the sediment unit, Heinrich event-4 was different than Heinrich events 1 or 2 (i.e., larger ice sheet collapse(?), longer duration(?), "dirtier" icebergs(?)). Other data from across the southern and eastern margin of the Laurentide Ice Sheet, as well as Greenland and the North Atlantic, support this interpretation, possibly indicating a relative mid-Wisconsin glacial maximum pre-Heinrich event 4. Many of these data also indicate that Heinrich event 4 (35 ka) resulted in serious climatic and oceanographic reorganizations. We suggest that Heinrich event 4 gutted the Hudson Strait, leaving it devoid of ice for Heinrich event 3. We further hypothesize that Heinrich event 3 did not originate from axial ice transport along the Hudson Strait; thus Heinrich event 3 may be more analogous to the proposed northward advancing ice from Ungava Bay during Heinrich event 0 than to the more typical down-the-strait flow during H-1, H-2, and H-4. Consequently, the climatic and oceanographic impacts resulting from Heinrich events are highly susceptible to the type, origin, and magnitude of ice sheet collapse, something which varied per Heinrich event during the last glacial period. |
format |
Dataset |
author |
Kirby, Mathew E Andrews, John T |
author_facet |
Kirby, Mathew E Andrews, John T |
author_sort |
Kirby, Mathew E |
title |
(Table 1) Age determination of sediment cores of the Labrador Sea |
title_short |
(Table 1) Age determination of sediment cores of the Labrador Sea |
title_full |
(Table 1) Age determination of sediment cores of the Labrador Sea |
title_fullStr |
(Table 1) Age determination of sediment cores of the Labrador Sea |
title_full_unstemmed |
(Table 1) Age determination of sediment cores of the Labrador Sea |
title_sort |
(table 1) age determination of sediment cores of the labrador sea |
publisher |
PANGAEA |
publishDate |
1999 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.856936 https://doi.org/10.1594/PANGAEA.856936 |
op_coverage |
MEDIAN LATITUDE: 62.415223 * MEDIAN LONGITUDE: -57.921000 * SOUTH-BOUND LATITUDE: 61.269000 * WEST-BOUND LONGITUDE: -59.450000 * NORTH-BOUND LATITUDE: 63.460000 * EAST-BOUND LONGITUDE: -55.978000 * MINIMUM DEPTH, sediment/rock: 0.510 m * MAXIMUM DEPTH, sediment/rock: 9.735 m |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) ENVELOPE(-67.489,-67.489,59.498,59.498) ENVELOPE(-59.450000,-55.978000,63.460000,61.269000) |
geographic |
Greenland Hudson Hudson Strait Ungava Bay |
geographic_facet |
Greenland Hudson Hudson Strait Ungava Bay |
genre |
Arctic Greenland Hudson Strait Ice Sheet Labrador Sea North Atlantic Ungava Bay |
genre_facet |
Arctic Greenland Hudson Strait Ice Sheet Labrador Sea North Atlantic Ungava Bay |
op_source |
Supplement to: Kirby, Mathew E; Andrews, John T (1999): Mid-Wisconsin Laurentide ice sheet growth and decay: Implications for Heinrich events 3 and 4. Paleoceanography, 14(2), 211-223, https://doi.org/10.1029/1998PA900019 |
op_relation |
Manley, William F; Jennings, Anne E (1996): Radiocarbon date list VIII: Eastern Canadian Arctic, Labrador, northern Wuebec, East Greenland Shelf, Iceland Shelf, and Antarctica. INSTAAR Occasional Paper, University of Colorado, Boulder, 50, 163 pp https://doi.pangaea.de/10.1594/PANGAEA.856936 https://doi.org/10.1594/PANGAEA.856936 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.856936 https://doi.org/10.1029/1998PA900019 |
_version_ |
1766301250306965504 |