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Andrews, John T; Bjørk, Anders Anker; Eberl, Dennis D; Jennings, Anne E; Verplanck, Emily P (2015): Mineralogy ol late Quaternary marine sediments from the West and East Greenland shelves offshore from early Tertiary basalt outcrops [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.854024, Supplement to: Andrews, JT et al. (2015): Significant differences in late Quaternary bedrock erosion and transport: East versus West Greenland -70°N - evidence from the mineralogy of offshore glacial marine sediments. Journal of Quaternary Science, 30(5), 452-463, https://doi.org/10.1002/jqs.2787

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Published: 2015-10-18 • DOI registered: 2015-11-16

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Abstract:
We use quantitative X-ray diffraction to determine the mineralogy of late Quaternary marine sediments from the West and East Greenland shelves offshore from early Tertiary basalt outcrops. Despite the similar basalt outcrop area (60 000-70 000 km**2), there are significant differences between East and West Greenland sediments in the fraction of minerals (e.g. pyroxene) sourced from the basalt outcrops. We demonstrate the differences in the mineralogy between East and West Greenland marine sediments on three scales: (1) modern day, (2) late Quaternary inputs and (3) detailed down-core variations in 10 cores from the two margins. On the East Greenland Shelf (EGS), late Quaternary samples have an average quartz weight per cent of 6.2 ± 2.3 versus 12.8 ± 3.9 from the West Greenland Shelf (WGS), and 12.02 ± 4.8 versus 1.9 ± 2.3 wt% for pyroxene. K-means clustering indicated only 9% of the samples did not fit a simple EGS vs. WGS dichotomy. Sediments from the EGS and WGS are also isotopically distinct, with the EGS having higher eNd (-18 to 4) than those from the WGS (eNd = -25 to -35). We attribute the striking dichotomy in sediment composition to fundamentally different long-term Quaternary styles of glaciation on the two basalt outcrops.
Coverage:
Median Latitude: 68.605731 * Median Longitude: -46.088705 * South-bound Latitude: 65.021800 * West-bound Longitude: -61.450000 * North-bound Latitude: 71.641000 * East-bound Longitude: -20.400000
Date/Time Start: 1990-01-01T00:00:00 * Date/Time End: 2009-09-01T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
26 datasets

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Datasets listed in this publication series

  1. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S1) Mineralogy determined by qXRD of bedrock, IRD clasts, and lake sediments grouped into three possible sediment sources associated with bedrock geology: basalt, felsic igneous and metamorphic rocks, and sandstone (Link to file in Excel format). https://doi.org/10.1594/PANGAEA.853991
  2. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S2) Measured and calculated (SedUnMix) fractions from mixtures of basalt and granite gneiss, and lake sediments (Link to file in Excel format). https://doi.org/10.1594/PANGAEA.853992
  3. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core BS1191-K5. https://doi.org/10.1594/PANGAEA.853994
  4. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core BS1191-K7. https://doi.org/10.1594/PANGAEA.853995
  5. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core HU93030-034TWC. https://doi.org/10.1594/PANGAEA.853998
  6. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core HU2008029-070PC. https://doi.org/10.1594/PANGAEA.853996
  7. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core HU2008029-070TWC. https://doi.org/10.1594/PANGAEA.853997
  8. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core JM96-1210. https://doi.org/10.1594/PANGAEA.853999
  9. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core JM96-1216. https://doi.org/10.1594/PANGAEA.854000
  10. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S5) Radiogenic isotopes of sediment core JR175-VC03. https://doi.org/10.1594/PANGAEA.854019
  11. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core JR175-VC05. https://doi.org/10.1594/PANGAEA.854001
  12. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core JR175-VC20. https://doi.org/10.1594/PANGAEA.854002
  13. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S5) Radiogenic isotopes of sediment core JR175-VC20. https://doi.org/10.1594/PANGAEA.854020
  14. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core JR175-VC24. https://doi.org/10.1594/PANGAEA.854003
  15. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S5) Radiogenic isotopes of sediment core JR175-VC39. https://doi.org/10.1594/PANGAEA.854021
  16. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core JR175-VC43. https://doi.org/10.1594/PANGAEA.854004
  17. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core JR175-VC45. https://doi.org/10.1594/PANGAEA.854005
  18. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core JR175-VC46. https://doi.org/10.1594/PANGAEA.854006
  19. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S5) Radiogenic isotopes of sediment core JR175-VC46. https://doi.org/10.1594/PANGAEA.854022
  20. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core MD99-2260. https://doi.org/10.1594/PANGAEA.854007
  21. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core MD99-2317. https://doi.org/10.1594/PANGAEA.854008
  22. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core MD99-2322. https://doi.org/10.1594/PANGAEA.854009
  23. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core MSM05/3_343300. https://doi.org/10.1594/PANGAEA.854010
  24. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core MSM05/3_343390. https://doi.org/10.1594/PANGAEA.854011
  25. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S4) Mineral composition of sediment core POS175/1_1-5-1. https://doi.org/10.1594/PANGAEA.854012
  26. Andrews, JT; Bjørk, AA; Eberl, DD et al. (2015): (Table S3) Mineral composition of surface sediments around Greenland. https://doi.org/10.1594/PANGAEA.853993