Digital Data for Bedrock Geology (1:500,000)

This dataset shows bedrock geology units and major faults for Maine at 1:500,000 scale. The dataset was developed by the Maine Geological Survey (MGS) from the "Bedrock Geologic Map of Maine, Osberg, Hussey, and Boone, 1985." The data for this dataset were scanned off 1:500,000 scale mylars by the U. S. Geological Survey in 1987. The original bedrock unit codes were added by the J.W. Sewall Co. in 1990 for the Maine Low-Level Radioactive Waste Authority. In 1994, staff at MGS identified and added codes for major bedrock faults. Bedrock unit codes assigned to this dataset are available in comma delimited text and .dbf format.

Instructions for Downloading Generalized Bedrock Geology Data

  1. Using a web browser, go to the Maine Office of GIS Data Catalog. A topical listing of digital data layers will appear. Scroll down to the section titled Geological and geophysical.
  2. The dataset is named Bedrock geology units (BEDROCK).
  3. Click on the icons in the "Download" column to:
    • View metadata.
    • Download a .zip file of the bedrock shapefile and associated geologic unit tables.
    • Download a .kmz file to view the data using Google Earth.

Last updated on November 9, 2012