Piper, David J W; Skene, Kenneth I (2016): (Table 2) Age determination of brock-red sandy mud beds and detrital carbonate beds in the Scotian margin [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.862951, Supplement to: Piper, DJW; Skene, KI (1998): Latest Pleistocene ice-rafting events on the Scotian Margin (eastern Canada) and their relationship to Heinrich events. Paleoceanography, 13(2), 205-214, https://doi.org/10.1029/97PA03641
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Abstract:
Piston cores from the continental margin off Nova Scotia show up to four discrete intervals of "brick-red sandy mud", which are up to 20 cm thick. The ages of these intervals are bracketed by several radiocarbon dates, and three fall in the range 12.5-14.1 ka (radiocarbon years with -0.4 kyr reservoir correction). The youngest dates from ~10.4 ka, placing it within the Younger Dryas. The distribution of the beds and their petrographic character indicate a source in the Gulf of Saint Lawrence. The grain size of these beds suggests that they comprise a coarse component transported by ice rafting that diminishes distally and a fine component that represents suspension fallout from a surface plume and resulting nepheloid layers. Graded brick-red beds in some cores were probably redeposited from turbidity currents. The lowermost bed on the Laurentian Fan and East Scotian Rise is immediately overlain by a carbonate-rich interval that can be identified all around the margin of the Grand Banks. This interval is correlated with detrital carbonate bed DC-1 in the Labrador Sea and Heinrich event H1 in the North Atlantic. The sequential occurrence of the two beds suggests that they may be a response to the same trigger, probably sea level rise, but that the Gulf of Saint Lawrence source was more easily destabilized.
Related to:
Keigwin, Lloyd D; Jones, Glenn A (1995): The marine record of deglaciation from the continental margin off Nova Scotia. Paleoceanography, 10(6), 973-986, https://doi.org/10.1029/95PA02643
Mosher, David C; Piper, David J W; Vilks, Gustavs; Aksu, Ali E; Fader, Gordon B (1989): Evidence for Wisconsinan glaciations in the Verrill Canyon area, Scotian Slope. Quaternary Research, 31(1), 27-40, https://doi.org/10.1016/0033-5894(89)90083-5
Piper, David J W; Pereira, Christopher PG (1992): Late Quaternary sedimentation in central Flemish Pass. Canadian Journal of Earth Sciences, 29(3), 535-550, https://doi.org/10.1139/e92-047
Coverage:
Median Latitude: 43.671742 * Median Longitude: -57.957392 * South-bound Latitude: 42.319670 * West-bound Longitude: -64.847830 * North-bound Latitude: 47.049170 * East-bound Longitude: -47.048170
Date/Time Start: 1995-06-23T00:00:00 * Date/Time End: 1995-06-23T00:00:00
Minimum DEPTH, sediment/rock: 0.910 m * Maximum DEPTH, sediment/rock: 3.715 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Piper, David J W | |||
| 2 | Latitude of event | Latitude | Piper, David J W | |||
| 3 | Longitude of event | Longitude | Piper, David J W | |||
| 4 | Elevation of event | Elevation | m | Piper, David J W | ||
| 5 | DEPTH, sediment/rock | Depth sed | m | Piper, David J W | Geocode | |
| 6 | Depth, top/min | Depth top | m | Piper, David J W | ||
| 7 | Depth, bottom/max | Depth bot | m | Piper, David J W | ||
| 8 | Area/locality | Area | Piper, David J W | |||
| 9 | Age, dated | Age dated | ka | Piper, David J W | Age, 14C AMS | |
| 10 | Age, dated standard deviation | Age dated std dev | ± | Piper, David J W | Age, 14C AMS | |
| 11 | Laboratory code/label | Lab label | Piper, David J W | |||
| 12 | Age, dated material | Dated material | Piper, David J W | |||
| 13 | Age, comment | Comm | Piper, David J W | stratigraphic position | ||
| 14 | Reference/source | Reference | Piper, David J W |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
175 data points