Geological Society, London, Memoirs

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Geological Society, London, Memoirs Glacial landforms in a hard bedrock terrain, Melville Bay, northwestern Greenland by R. Gyllencreutz, F. Freire, S. L. Greenwood, L. A. Mayer, and M. Jakobsson Geological Society, London, Memoirs Volume 46(1):201-202 November 30, 2016 © 2016 The Author(s). Published by The Geological Society of London

Multibeam bathymetry and land DEM from Melville Bay. Multibeam bathymetry and land DEM from Melville Bay. Aquisition system Kongsberg EM 2040. Frequency 200–400 kHz. Grid-cell size 5 m. (a) Multibeam bathymetry showing a bedrock-dominated landscape with glacial imprint. (b) Multibeam bathymetry acquired with an AUV showing iceberg ploughmarks at 270 m depth. Aquisition system Geoswath interferometric sonar. Frequency 250 kHz. Grid-cell size 1 m. (c) Scarp profile (VE×2). (d) Rose diagram of azimuths of 186 glacially moulded features indicating ice movement towards 300° (NW). (e) Onshore DEM from satellite (SETSM) data (located in (g), black box). Grid-cell size 10 m. Light blue area, Qeqertarsuup Sermia outlet glacier (QS). (f) 3D-perspective view (red lines in (a)), showing the steep fault escarpments in the north, and U-shaped troughs and moutonée-type forms in the south. (g) Location of study area (red box) and onshore comparison area (black box); map from IBCAO v. 3.0. (h) Detail from (a) showing streamlined features, moutoneé forms and stoss-and-lee forms, indicating glacial movement towards the NW (white arrow). R. Gyllencreutz et al. Geological Society, London, Memoirs 2016;46:201-202 © 2016 The Author(s). Published by The Geological Society of London