1:250,000-scale Surficial Geology Maps

1:250,000 surficial geology map

Read the map explanation.

List of ONLINE surficial geology maps

What are surficial deposits?

Sand, gravel, clay, and other unconsolidated materials that overlie bedrock are known as surficial deposits. They cover most of Maine's land surface and include sediments deposited by water, wind, and glacial ice. Glacial deposits are by far the most abundant surficial materials in Maine.

1:250,000-scale Surficial Geology Maps

This series of black-and-white maps contains the information used to compile the 1985 Surficial Geologic Map of Maine. In addition to a description of surficial materials, the maps include the location of deltas, sites of special interest, radiocarbon-dated sites, and sources of geologic information.

Uses of surficial geology information

Identification of surficial materials is critical for making a number of land use decisions, including determining the suitability of an area for development, planning major construction projects, or looking for sources of ground water. Surficial geologic maps also provide information on the location and extent of sand and gravel deposits. Large scale (1:24,000 or larger) maps are most useful for investigations of particular sites.

How to obtain or view these maps

Our publications search allows you to search for maps and publications by geographic area or subject. The subject search is linked to the Bibliography of Maine Geology. Search results are linked to online maps and data and also to an online shopping cart. Although online ordering is not available at this time, the shopping cart order may be printed out and mailed or faxed to the Maine Geological Survey.

Use our online surficial geology map list to link directly to the quadrangle of your choice.

Last updated on October 12, 2012