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The Munson-Nygren slide is a large compound slide located between Munson and Nygren Canyons below 1900 m depth on the Continental Slope off Georges Bank. Its structural and morphological features are recognized in high-resolution seismic-reflection profiles. The slide comprises an axial trough which has a relief as great as 325 m and a width of 6-10 km. The trough is flanked by displaced and disrupted strata for a total lateral extent of approximately 20 km and a downslope extent of at least 35 km. The slide is unrelated genetically to the adjacent canyons and may postdate Munson Canyon. There is evidence of plastic deformation at the base of the section subjected to sliding. Certain features of the slide complex resemble those seen in landforms on the Laurentian Rise and attributed by Emery et al.* * Emery et al. (1970). to the 1929 Grand Banks earthquake. The Munson-Nygren slide may have been triggered by a large earthquake in late Pleistocene time or later. Destructional landforms associated with the slide are similar to those widely present along the lower slope off Georges Bank. ?? 1986.
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The Munson-Nygren slide: A major lower-slope slide off Georges Bank