High-Resolution Geologic Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts

Walter A. Barnhardt; Brian D. Andrews; Seth D. Ackerman; Wayne E. Baldwin; Christopher J. Hein

doi:10.3133/ofr20071373

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High-Resolution Geologic Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts

Walter A. Barnhardt·Brian D. Andrews·Seth D. Ackerman·Wayne E. Baldwin·Christopher J. Hein

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Abstract

The geologic framework of the Massachusetts inner continental shelf between Cape Ann and Salisbury Beach has been shaped by a complicated history of glaciation, deglaciation, and changes in relative sea level. New geophysical data (swath bathymetry, sidescan sonar and seismic-reflection profiling), sediment samples, and seafloor photography provide insight into the geomorphic and stratigraphic record generated by these processes. High-resolution spatial data and geologic maps in this report support coastal research and efforts to understand the type, distribution, and quality of subtidal marine habitats in the Massachusetts coastal ocean.

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Source-reported bounding extent: 42.333333333333336° to 43° latitude; -71° to -70.33333333333333° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Walter A. Barnhardt, Brian D. Andrews, Seth D. Ackerman, Wayne E. Baldwin, Christopher J. Hein. 2009. High-Resolution Geologic Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts. https://doi.org/10.3133/ofr20071373

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