The Cryosphere
The Cryosphere
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Articles | Volume 14, issue 7
Articles | Volume 14, issue 7
https://doi.org/10.5194/tc-14-2303-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-14-2303-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 14, issue 7
Research article
 | 
22 Jul 2020
Research article |  | 22 Jul 2020

Repeated ice streaming on the northwest Greenland continental shelf since the onset of the Middle Pleistocene Transition

Andrew M. W. Newton, Mads Huuse, Paul C. Knutz, and David R. Cox

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Cited articles

Andreassen, K., Ødegaard, C. M., and Rafaelsen, B.: Imprints of former ice streams, imaged and interpreted using industry three-dimensional seismic data from the south-western Barents Sea, in: Seismic geomorphology: applications to hydrocarbon exploration and production, edited by: Davies, R. J., Posamentier, H. W., Wood, L. W., and Cartwright, J. A., Geological Society Special Publication, London, UK, 151–169, 2007. 
Arndt, J. E., Jokat, W., and Dorschel, B.: The last glaciation and deglaciation of the Northeast Greenland continental shelf revealed by hydro-acoustic data, Quaternary Sci. Rev., 160, 45–56, https://doi.org/10.1016/j.quascirev.2017.01.018, 2017. 
Balco, G. and Rovey, C. W.: Absolute chronology for major Pleistocene advances of the laurentide ice Sheet, Geology, 38, 795–798, https://doi.org/10.1130/G30946.1, 2010. 
Bennett, M. R.: Ice streams as the arteries of an ice sheet: Their mechanics, stability and significance, Earth-Sci. Rev., 61, 309–339, https://doi.org/10.1016/S0012-8252(02)00130-7, 2003. 
Bierman, P. R., Shakun, J. D., Corbett, L. B., Zimmerman, S. R., and Rood, D. H.: A persistent and dynamic East Greenland Ice Sheet over the past 7.5 million years, Nature, 540, 256–260, https://doi.org/10.1038/nature20147, 2016. 
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Short summary
Seismic reflection data offshore northwest Greenland reveal buried landforms that have been interpreted as mega-scale glacial lineations (MSGLs). These have been formed by ancient ice streams that advanced hundreds of kilometres across the continental shelf. The stratigraphy and available chronology show that the MSGLs are confined to separate stratigraphic units and were most likely formed during several glacial maxima after the onset of the Middle Pleistocene Transition at ~ 1.3 Ma.
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