EarthWorks Geospatial Catalog

Surficial geologic map of the Bristol quadrangle, Belknap, Grafton, and Merrimack Counties, New Hampshire / by Daniel J. Tinkham and John A. Brooks ; ; digital compilation by Emery & Garrett Groundwater, Inc.

Relief shown by contours, shading and spot heights. "Contour interval 20 feet." "Base map (provisional) by the U.S. Geological Survey, 1987, Bristol, New Hampshire." "GRANIT tile no. 96." "Surficial geologic map open-file series GEO-109-024000-SMAP." "Surficial mapping completed by Daniel J. Tinkham and John A. Brooks (Consulting geologists at Emery & Garrett Groundwater Inc.) during the 2009 field season." "DRAFT." Includes: text (Glacial geology of the Bristol quadrangle), quadrangle location map, 4 color photos (Representative photographs of the map area), 1 insets (Shaded-relief digital elevation model (DEM) data showing the southeast trending glacial topography features within the Bristol quadrangle) and Bristol quadrangle surficial geology correlation chart.
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