Description:The New Hampshire Geological Survey (NHGS),as part of the United States Geoscience Information Network (USGIN) provided a compilation of geologic maps in two (2) different scales. 1. These data contain polygon features digitized from the Bedrock Geologic Map of New Hampshire (Lyons and others, 1997). The bedrock geologic map displays the type, location, and geologic age of the rocks underlying the state. The map is a compilation of decades of work by geologists who mapped individual portions of the state at various times. Polygon features found in these data display the location and extent of each mapped bedrock body in the state at a scale of 1:250,000. These data are from field mapping efforts of geologists over the last approximately 35 years. The data contain polygon, line and point features digitized from the original paper or scale stable media. These bedrock geologic maps display the type, location, and geologic age of the rocks underlying the state. Polygon features found in these data display the location and extent of each mapped bedrock body in the state at a scale of 1:24,000. A more thorough explanation for each of these datasets may be found in the accompanying metadata files. Data available for download. The digital map layers include contacts, faults, geologic age, and lithology. In addition to the bedrock geology, the datasets include geopolitical and hydrologic information, such as political boundaries, quadrangle boundaries, hydrologic units, and water-well data. The digital map is available as web map service, web feature service, ESRI service endpoint, and ESRI shapefiles for download. This resource was provided by the New Hampshire Geological Survey and made available for distribution through the National Geothermal Data System.
Publication Date: Jan 01, 2001