Collection of Peter Robinson Blackline 24K Geologic Maps

This dataset contains geologic contacts drawn on 40, 1:24,000 scale topographic maps in central Massachusetts used in preparation for publication of the 1983, 1:250,000 scale bedrock geologic map of Massachusetts. These maps were drawn by Professor Peter Robinson, Department of Geosciences, University of Massachusetts Amherst. The contacts were drawn on these topographic maps in black felt tip pen and are based on geologic mapping done from the 1960's through the 1970's by undergraduate and graduate students and by Professor Robinson himself. Dr. Robinson was the chief compiler for central Massachusetts during the compilation and publication of the 1983 bedrock geologic map of Massachusetts. These blackline maps...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ndc_collection

Collection of John Kick Gravity Maps

This is a collection of unpublished Bouguer gravity maps produced by John Kick as part of his doctoral dissertation in the Geosciences Department at the University of Massachusetts Amherst for 16 quadrangles in central Massachusetts. The maps show the gravity station locations and gravity contours (in 0.5 or 1 mgal increments) hand drawn on a vellum base at 1:48,000 scale. The maps were prepared for the Athol, Belchertown, Bernardston, Greenfield, Millers Falls, Mount Grace, Mount Holyoke, Mount Toby, Northfield, Orange, Petersham, Quabbin Reservoir, Royalston, Shutesbury, Ware and Winsor Dam quadrangles. The maps are archived as tiff images and georeferenced in Lambert Conformal Conic Projection, North American...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ndc_collection