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Chao, Weng-si (2017): Geochemistry of heavy minerals from the Arctic and Lomonosov Ridge off Greenland [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.870973

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Abstract:
The sediment deposited in the Arctic Ocean is transported by sea ice and icebergs, which are controlled by the Arctic surface circulations. Several cores from the central Arctic, the Lomonosov Ridge north of Greenland and the Morris Jesup Rise contain a distinct grayish, ice rafted debris (IRD)-rich, layer with some specific features: a sharp lower boundary, relatively low content of manganese, and a lack of bioturbation.
Heavy minerals from these layers were analyzed primarily by Electron Probe X-Ray Microanalyzer (EPMA) and Scanning Electron Microscope-Energy Dispersive Spectrometer (SEM-EDS) to establish the prominent provenance areas. The provenance variations can show the paleo-distribution and transport pathways of sea ice and icebergs and even indicate the origin of some abrupt glacial events. Initial results suggest that the majority of the grains in the gray layer originated from a limited area near the Putorana Basalt Plateau. We therefore hypothesize that this gray layer is related to an abrupt ice dammed lake drainage from northern Siberia, tentatively dated to around the boundary between MIS 4 and 3 based on all available chronostratigraphic data points and the correlation of distinct geochemical and sedimentological features: variation in Mn, bulk density, bioturbation and abundance of planktonic and benthic foraminifera; including published data and measured data in this study.
Coverage:
Median Latitude: 86.412560 * Median Longitude: -1.743171 * South-bound Latitude: 85.293120 * West-bound Longitude: -59.631940 * North-bound Latitude: 88.700000 * East-bound Longitude: 158.510000
Date/Time Start: 2007-08-24T00:00:00 * Date/Time End: 2012-08-12T14:10:53
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
18 datasets

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Datasets listed in this publication series

  1. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-GC10_9-11cm. https://doi.org/10.1594/PANGAEA.870955
  2. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-GC10_19-21cm. https://doi.org/10.1594/PANGAEA.870992
  3. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-GC10_35-37cm. https://doi.org/10.1594/PANGAEA.870956
  4. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-GC10_49-51cm. https://doi.org/10.1594/PANGAEA.870957
  5. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-GC10_64-66cm. https://doi.org/10.1594/PANGAEA.870958
  6. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-GC10_78-80cm. https://doi.org/10.1594/PANGAEA.870959
  7. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-GC10_94-96cm. https://doi.org/10.1594/PANGAEA.870960
  8. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-GC10_109-111cm. https://doi.org/10.1594/PANGAEA.870961
  9. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-PC04_68.2-71.2cm. https://doi.org/10.1594/PANGAEA.870962
  10. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-PC04_80.5-82.5cm. https://doi.org/10.1594/PANGAEA.870964
  11. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-PC04_86-88cm. https://doi.org/10.1594/PANGAEA.870965
  12. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-PC04_92.4-94.4cm. https://doi.org/10.1594/PANGAEA.870966
  13. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-PC04_98.4-101cm. https://doi.org/10.1594/PANGAEA.870967
  14. Chao, W- (2017): Geochemistry of heavy minerals of sediment sample LOMROG07-PC04_103-105cm. https://doi.org/10.1594/PANGAEA.870968
  15. Chao, W- (2017): Geochemistry of heavy minerals of sediment core LOMROG09-PC01. https://doi.org/10.1594/PANGAEA.870969
  16. Chao, W- (2017): Geochemistry of heavy minerals of sediment core LOMROG09-PC05. https://doi.org/10.1594/PANGAEA.870970
  17. Chao, W- (2017): Geochemistry of heavy minerals of sediment core LOMROG12-PC05. https://doi.org/10.1594/PANGAEA.870971
  18. Chao, W- (2017): Geochemistry of heavy minerals of sediment core LOMROG12-TC05. https://doi.org/10.1594/PANGAEA.870972