Pockmarks in Passamaquoddy Bay, New Brunswick, Canada

Geological Society, London, Memoirs
By: , and 

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Abstract

Pockmarks are seafloor depressions associated with fluid escape (Judd & Hovland 2007). They proliferate in the muddy seafloors of coastal Gulf of Maine and Bay of Fundy, where they are associated with shallow natural gas likely of biogenic origin (Ussler et al. 2003; Rogers et al. 2006; Wildish et al. 2008). In North America, shallow-water pockmark fields are not reported south of Long Island Sound, despite the abundance of gassy, muddy estuaries. The absence of pockmarks south of the limit of North American glaciation suggests that local and regional heterogeneities, possibly related to glacial or sea-level history or bedrock geology, influence pockmark field distribution. In shallow-water embayments, such as Passamaquoddy Bay, New Brunswick, pockmarks can be large (>200 m diameter) and number in the thousands.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Pockmarks in Passamaquoddy Bay, New Brunswick, Canada
Series title Geological Society, London, Memoirs
DOI 10.1144/M46.60
Volume 46
Year Published 2016
Language English
Publisher The Geological Society
Publisher location London
Contributing office(s) Woods Hole Coastal and Marine Science Center
Description 2 p.
First page 111
Last page 112
Country Canada
State New Brunswick
Other Geospatial Passamaquoddy Bay