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

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

doi:https://doi.org/10.5194/tc-14-2303-2020

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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Final revised paper (published on 22 Jul 2020)
Supplement to the final revised paper
Preprint (discussion started on 28 Nov 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Minor consideration regarding the palaeo-seafloor maps and figures', Lara Perez, 02 Jan 2020
- AC1: 'Response to reviewer #1', Andrew Newton, 16 Apr 2020
RC2: 'Review of Newton et al., Repeated ice streaming on the northwest Greenland shelf since the onset of the Middle Pleistocene Transition', Anonymous Referee #2, 15 Apr 2020
- AC2: 'Response to reviewer #2', Andrew Newton, 16 Apr 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to revisions (further review by editor and referees) (21 Apr 2020) by Pippa Whitehouse

AR by Andrew Newton on behalf of the Authors (23 Apr 2020) Author's response

ED: Publish subject to minor revisions (review by editor) (06 Jun 2020) by Pippa Whitehouse

AR by Andrew Newton on behalf of the Authors (09 Jun 2020) Author's response Manuscript

ED: Publish subject to technical corrections (16 Jun 2020) by Pippa Whitehouse

AR by Andrew Newton on behalf of the Authors (23 Jun 2020) Author's response Manuscript

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.