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3D seismic imaging of buried Younger Dryas mass movement flows: Lake Windermere, UK

3D seismic imaging of buried Younger Dryas mass movement flows: Lake Windermere, UK
3D seismic imaging of buried Younger Dryas mass movement flows: Lake Windermere, UK
Windermere is a glacially overdeepened lake located in the southeastern Lake District, UK. Using the threedimensional
(3D) Chirp subbottom profiler, we image mass movement deposits related to the Younger Dryas
(YD) within a decimetre-resolution 3D seismic volume, documenting their internal structure and interaction
with preexisting deposits in unprecedented detail. Three distinct flow events are identified and mapped
throughout the 3D survey area. Package structures and seismic attributes classify them as: a small (total
volume of c. 1500 m3) debris flow containing deformed translated blocks; a large (inferred total volume of
c. 500,000 m3), homogeneous fine-grained mass flow deposit; and a debris flow (inferred total volume of
c. 60,000 m3) containing small (c. 8.0×2.0 m) deformed translated blocks. Geomorphological mapping of
their distribution and interaction with preexisting sediments permit the reconstruction of a depositional
history for the stratigraphic units identified in the seismic volume.
0169-555X
176-187
Vardy, Mark E.
8dd019dc-e57d-4b49-8f23-0fa6d246e69d
Pinson, Luke J.W.
754e7438-c374-4c2a-946b-aab1b11bc998
Bull, Jonathan M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Henstock, T.J.
27c450a4-3e6b-41f8-97f9-4e0e181400bb
Davis, J.W.
7f762b01-375b-42c8-80cb-65baefffdb97
Gutowski, Martin
cd31d0d7-2bcc-4c54-8b33-610ce765d7e5
Vardy, Mark E.
8dd019dc-e57d-4b49-8f23-0fa6d246e69d
Pinson, Luke J.W.
754e7438-c374-4c2a-946b-aab1b11bc998
Bull, Jonathan M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Henstock, T.J.
27c450a4-3e6b-41f8-97f9-4e0e181400bb
Davis, J.W.
7f762b01-375b-42c8-80cb-65baefffdb97
Gutowski, Martin
cd31d0d7-2bcc-4c54-8b33-610ce765d7e5

Vardy, Mark E., Pinson, Luke J.W., Bull, Jonathan M., Dix, J.K., Henstock, T.J., Davis, J.W. and Gutowski, Martin (2010) 3D seismic imaging of buried Younger Dryas mass movement flows: Lake Windermere, UK. Geomorphology, 118 (1-2), 176-187. (doi:10.1016/j.geomorph.2009.12.017).

Record type: Article

Abstract

Windermere is a glacially overdeepened lake located in the southeastern Lake District, UK. Using the threedimensional
(3D) Chirp subbottom profiler, we image mass movement deposits related to the Younger Dryas
(YD) within a decimetre-resolution 3D seismic volume, documenting their internal structure and interaction
with preexisting deposits in unprecedented detail. Three distinct flow events are identified and mapped
throughout the 3D survey area. Package structures and seismic attributes classify them as: a small (total
volume of c. 1500 m3) debris flow containing deformed translated blocks; a large (inferred total volume of
c. 500,000 m3), homogeneous fine-grained mass flow deposit; and a debris flow (inferred total volume of
c. 60,000 m3) containing small (c. 8.0×2.0 m) deformed translated blocks. Geomorphological mapping of
their distribution and interaction with preexisting sediments permit the reconstruction of a depositional
history for the stratigraphic units identified in the seismic volume.

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Published date: 15 May 2010

Identifiers

Local EPrints ID: 154413
URI: http://eprints.soton.ac.uk/id/eprint/154413
ISSN: 0169-555X
PURE UUID: 579db404-7b39-4c21-8867-8d4686660cc1
ORCID for Jonathan M. Bull: ORCID iD orcid.org/0000-0003-3373-5807
ORCID for J.K. Dix: ORCID iD orcid.org/0000-0003-2905-5403
ORCID for T.J. Henstock: ORCID iD orcid.org/0000-0002-2132-2514

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Date deposited: 25 May 2010 09:59
Last modified: 14 Mar 2024 02:44

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Contributors

Author: Mark E. Vardy
Author: Luke J.W. Pinson
Author: J.K. Dix ORCID iD
Author: T.J. Henstock ORCID iD
Author: J.W. Davis
Author: Martin Gutowski

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