A quasi-annual record of time-transgressive esker formation: implications for ice-sheet reconstruction and subglacial hydrology

Livingstone, Stephen J.; Lewington, Emma L. M.; Clark, Chris D.; Storrar, Robert D.; Sole, Andrew J.; McMartin, Isabelle; Dewald, Nico; Ng, Felix

doi:https://doi.org/10.5194/tc-14-1989-2020

Articles | Volume 14, issue 6

https://doi.org/10.5194/tc-14-1989-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-14-1989-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 6

Research article

|

18 Jun 2020

Research article |

| 18 Jun 2020

A quasi-annual record of time-transgressive esker formation: implications for ice-sheet reconstruction and subglacial hydrology

Stephen J. Livingstone, Emma L. M. Lewington, Chris D. Clark, Robert D. Storrar, Andrew J. Sole, Isabelle McMartin, Nico Dewald, and Felix Ng

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Final revised paper (published on 18 Jun 2020)
Preprint (discussion started on 20 Dec 2019)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'referee review of Livingstone et al, esker beads', Anonymous Referee #1, 22 Jan 2020
- AC1: 'Reply to Reviewer 1', Stephen Livingstone, 30 Mar 2020
RC2: 'Referee comment on "A quasi-annual record of time-transgressive esker formation: implications for ice sheet reconstruction and subglacial hydrology" by Livingstone et al.', Anonymous Referee #2, 11 Mar 2020
- AC2: 'Reply to reviewer 2', Stephen Livingstone, 30 Mar 2020
RC3: 'A quasi-annual record of time-transgressive esker formation: implications for ice sheet reconstruction and subglacial hydrology Livingstone et al. Submission to The Cyrosphere', Anna L.C. Hughes, 02 Apr 2020
- AC3: 'Reply to reviewer 3', Stephen Livingstone, 02 Apr 2020

Peer-review completion

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

ED: Publish subject to minor revisions (review by editor) (16 Apr 2020) by Kerim Nisancioglu

AR by Stephen Livingstone on behalf of the Authors (17 Apr 2020) Author's response Manuscript

ED: Publish subject to minor revisions (review by editor) (12 May 2020) by Kerim Nisancioglu

ED: Publish as is (15 May 2020) by Kerim Nisancioglu

Short summary

We map series of aligned mounds (esker beads) across central Nunavut, Canada. Mounds are interpreted to have formed roughly annually as sediment carried by subglacial rivers is deposited at the ice margin. Chains of mounds are formed as the ice retreats. This high-resolution (annual) record allows us to constrain the pace of ice retreat, sediment fluxes, and the style of drainage through time. In particular, we suggest that eskers in general record a composite signature of ice-marginal drainage.