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Open-File Report 2006-1260-D

Prepared in Cooperation with the Commonwealth of Massachusetts, Office of the State Geologist and Executive Office of Energy and Environmental Affairs

Surficial Geologic Map of the Worcester North-Oxford- Wrentham-Attleboro Nine-Quadrangle Area in South- Central Massachusetts

Compiled by Byron D. Stone, Janet R. Stone, and Mary L. DiGiacomo-Cohen

A portion of the surficial geologic map of the Worcester North quadrangle, shown with semitransparent shaded relief on a scanned topographic base map.

Explanatory Text (13 pages, 8.5x11 inches) [700-KB PDF]

Introduction

The surficial geologic map layer shows the distribution of nonlithified earth materials at land surface in an area of nine 7.5-minute quadrangles (417 mi2 total) in south-central Massachusetts. The geologic map differentiates surficial materials of Quaternary age on the basis of their lithologic characteristics (such as grain size and sedimentary structures), constructional geomorphic features, stratigraphic relationships, and age. Surficial earth materials significantly affect human use of the land, and an accurate description of their distribution is particularly important for water resources, construction aggregate resources, earth-surface hazards assessments, and land-use decisions. This compilation of surficial geologic materials is an interim product that defines the areas of exposed bedrock, and the boundaries between glacial till, glacial stratified deposits, and overlying postglacial deposits. This work is part of a comprehensive study to produce a statewide digital map of the surficial geology at a 1:24,000-scale level of accuracy. This report includes explanatory text (PDF), quadrangle maps at 1:24,000 scale (PDF files), GIS data layers (ArcGIS shapefiles), metadata for the GIS layers, scanned topographic base maps (TIF), and a readme.txt file.


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ISBN 978-1-4113-2049-9

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Suggested citation: Stone, B.D., Stone, J.R., and DiGiacomo-Cohen, M.L., 2008, Surficial geologic map of the Worcester North-Oxford-Wrentham-Attleboro nine-quadrangle area in south-central Massachusetts: U.S. Geological Survey Open-File Report 2006-1260-D

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