Journal
MARINE GEOLOGY
Volume 303, Issue -, Pages 1-13Publisher
ELSEVIER
DOI: 10.1016/j.margeo.2012.01.010
Keywords
buried pockmark; unit pockmark; fluid flow; Nile Deep Sea Fan; stacked pockmark; migration
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A large number of pockmarks have been identified in the Rosetta Region of the Western Nile Deep Sea Fan. Co-located high resolution 20 and Chirp datasets have been used to identify seabed and buried pockmarks which are interpreted to span the Holocene to Pleistocene period. The pockmarks range in size and stratigraphic position from large buried pockmarks to small unit seabed pockmarks. Clusters of small unit pockmarks are stratigraphically positioned above the centre of large buried Pleistocene pockmarks and are used to infer: 1) rejuvenation of the larger pockmark conduit once burial has occurred, and 2) a change in the frequency and magnitude of pockmark formation events. (C) 2012 Elsevier B.V. All rights reserved.
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