Oceanographic profiles and ice rafted debris in sediments from the Scoresby Sund, Greenland ...

• Main Authors: Ó Cofaigh, Colm, Dowdeswell, Julian A, Grobe, Hannes
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1996
• Subjects: Giant box corer; Gravity corer Kiel type; ARK-VII/3b; ARK-VII/1; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Quaternary Environment of the Eurasian North QUEEN; East Greenland; glacier; Greenland; Ice Sheet; Iceberg*; Scoresby Sund
• Online Access: https://dx.doi.org/10.1594/pangaea.729430; https://doi.pangaea.de/10.1594/PANGAEA.729430

Holocene glacimarine sedimentation associated with fast-flowing outlet glaciers draining the Greenland Ice Sheet is investigated using sedimentary and acoustic data from inner Scoresby Sund, East Greenland. Sedimentation in inner Scoresby Sund is dominated by three processes which are influenced by differences in proximity to fast-flowing outlet glaciers, extent of glacier-ice cover and fjord bathymetry: (1) sediment-gravity flow, principally in the form of turbidity currents and debris flows; (2) suspension sedimentation from turbid meltwater plumes; and (3) iceberg rafting. These processes result in texturally and sedimentologically heterogeneous lithofacies. Proportionally, fine-grained muds (laminated, stratified and massive facies) dominate cores recovered from inner Scoresby Sund, accounting for 80% of the total, whereas diamict facies account for only 15%. Abundant fine-grained muds demonstrate that meltwater flux and sedimentation is significant in this high Arctic glacimarine environment, in ... : Supplement to: Ó Cofaigh, Colm; Dowdeswell, Julian A; Grobe, Hannes (2001): Holocene glacimarine sedimentation, inner Scoresby Sund, East Greenland: the influence of fast-flowing ice-sheet outlet glaciers. Marine Geology, 175(1-4), 103-129 ...