Mark D. Bateman
The timing and consequences of the blockage of the Humber Gap by the last British−Irish Ice Sheet
Bateman, Mark D.; Evans, David J.A.; Roberts, David H.; Medialdea, Alicia; Ely, Jeremy; Clark, Chris D.
Professor David Evans firstname.lastname@example.org
David H. Roberts
Chris D. Clark
The eastern England terrestrial glacial sequences are critical to the spatial and temporal reconstruction of the last British−Irish Ice sheet (BIIS). Understanding glacial behaviour in the area of the Humber Gap is key as its blockage by ice created extensive proglacial lakes. This paper maps the glacial geomorphology of the Humber Gap region to establish for the first time the extent and thickness of the North Sea Lobe (NSL) of the BIIS. Findings establish the westerly maximal limit of the NSL. Ten new luminescence ages from across the region show the initial Skipsea Till advance to the maximal limits occurred regionally at c. 21.6 ka (Stage 1) and retreated off-shore c. 18 ka (Stage 2). Punctuated retreat is evident in the south of the region whilst to the immediate north retreat was initially rapid before a series of near synchronous ice advances (including the Withernsea Till advance) occurred at c. 16.8 ka (Stage 3). Full withdrawal of BIIS ice occurred prior to c. 15 ka (Stage 4). Geomorphic mapping and stratigraphy confirms the existence of a proto Lake Humber prior to Stage 1, which persisted to Stage 3 expanding eastward as the NSL ice retreated. It appears that proglacial lakes formed wherever the NSL encountered low topography and reverse gradients during both phases of both advance and retreat. These lakes may in part help explain the dynamism of parts of the NSL, as they initiated ice draw down and associated streaming/surging. The above record of ice-dammed lakes provides an analogue for now off-shore parts of the BIIS where it advanced as a number of asynchronous lowland lobes.
Bateman, M. D., Evans, D. J., Roberts, D. H., Medialdea, A., Ely, J., & Clark, C. D. (2018). The timing and consequences of the blockage of the Humber Gap by the last British−Irish Ice Sheet. Boreas: An International Journal of Quaternary Research, 47(1), 41-61. https://doi.org/10.1111/bor.12256
|Journal Article Type||Article|
|Acceptance Date||Mar 16, 2017|
|Online Publication Date||May 15, 2017|
|Publication Date||Jan 2, 2018|
|Deposit Date||Sep 25, 2017|
|Publicly Available Date||Sep 25, 2017|
|Peer Reviewed||Peer Reviewed|
Published Journal Article (Advance online version)
Publisher Licence URL
Advance online version © 2017 The Authors. Boreas published by John Wiley & Sons Ltd on behalf of The Boreas Collegium This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Published Journal Article (Final published version)
Publisher Licence URL
Final published version
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