Formation of pockmarks by pore-water escape |
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| Authors: | P K Harrington |
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| Institution: | (1) Gardline Surveys, Admiralty Road, NR30 3NG Norfolk, Great Yarmouth, United Kingdom |
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| Abstract: | During the course of a North Sea rig site investigation, a number of seabed depressions were observed on side-scan sonar records, some of which may be identified as pockmarks. Others are described as pits. A pockmark evolutionary series is proposed on the basis of all these features with a suggested mechanism which would favor release of pore water, but does not exclude gas escape. Acoustic voids are considered to be a related phenomenon. |
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