caa a22 4500 463216172 CHVBK 20180405153157.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s00367-007-0059-1 doi (NATIONALLICENCE)springer-10.1007/s00367-007-0059-1 Extremely deep-draft iceberg scouring in the glacial North Atlantic Ocean [Elektronische Daten] [Antoon Kuijpers, Friedrich Werner] Side-scan sonar and sub-bottom profiling investigations of the Iceland-Faeroe Ridge have revealed the widespread presence of iceberg plowmarks at water depths between 750 and 860m. This is well beyond the maximum water depth reported for ice scouring in the adjacent areas of the North Atlantic. An exceptionally deep iceberg plowmark was found at the southern flank of the ridge, which could be traced down to 940m water depth. Supported by published nearby sediment core data, a Saalian (MIS 6) age of that iceberg plowmark is suggested. Considering a glacial sea level of 120m below present, the paleo-draft of this iceberg is estimated to have been at least 820m. The keel depth of such giant icebergs drifting in the glacial northern North Atlantic significantly exceeds the draft dimensions of large icebergs seen today in the Antarctic. The most likely source area for this extreme deep-draft type of iceberg is inferred to be southern Greenland. Plowmark direction, which in our case indicates iceberg entrainment by the North Atlantic Current, is suggested to be a useful indicator of (sub)surface paleo-circulation during late Pleistocene iceberg surging and deglaciation episodes. Springer-Verlag, 2007 Kuijpers Antoon Geological Survey of Denmark and Greenland, Øster Voldgade 10, 1350, Copenhagen, Denmark aut Werner Friedrich Institute of Geological Sciences, University of Kiel, Olshausenstr. 40, 24118, Kiel, Germany aut Geo-Marine Letters Springer-Verlag 27/6(2007-12-01), 383-389 0276-0460 27:6<383 2007 27 367 https://doi.org/10.1007/s00367-007-0059-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00367-007-0059-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kuijpers Antoon Geological Survey of Denmark and Greenland, Øster Voldgade 10, 1350, Copenhagen, Denmark aut NATIONALLICENCE 700 1- Werner Friedrich Institute of Geological Sciences, University of Kiel, Olshausenstr. 40, 24118, Kiel, Germany aut NATIONALLICENCE 773 0- Geo-Marine Letters Springer-Verlag 27/6(2007-12-01), 383-389 0276-0460 27:6<383 2007 27 367 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer