Stratified glacimarine basin-fills in West Greenland fjords

Acoustically stratified sediments that infill glacially eroded bedrock basins are common in fjords (Seramur et al. 1997; Gilbert et al. 1998; Hogan et al. 2012; Dowdeswell & Vasquez 2013). Internally, such stratified sediments are often characterized by relatively smooth reflections that parallel the seafloor. Sills between basins usually comprise bedrock, sometimes covered by a thin veneer of glacimarine sediment and/or till. Fjords in West Greenland, including Rink Fjord and Vaigat, contain bedrock basins infilled by acoustically stratified sediment (Fig. 1). The basin fills are a product of rain-out from turbid meltwater plumes, probably supplemented by iceberg-rafting and downslope resedimentation.

Details

Publication status:
Published
Author(s):
Authors: Ó Cofaigh, C., Hogan, K.A., Dowdeswell, J.A., Streuff, K.

Editors: Dowdeswell, J.A., Canals, M., Jakobsson, M., Todd, B.J., Dowdeswell, E.K., Hogan, K.A.

On this site: Kelly Hogan
Date:
1 January, 2016
Journal/Source:
In: Dowdeswell, J.A., Canals, M., Jakobsson, M., Todd, B.J., Dowdeswell, E.K., Hogan, K.A. (eds.). Atlas of submarine glacial landforms: modern, Quaternary and ancient, London, Geological Society of London, 99-100.
Page(s):
99-100
Digital Object Identifier (DOI):
https://doi.org/10.1144/M46.83