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Geology -- United States -- Maps

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A Tapestry of Time and Terrain

This helpful teaching tool from the United States Geological Survey brings together the comprehensive geological and topographical maps of the United States. As the site suggests, "... this digital tapestry outlines the geologic story of continental collision and break-up, mountain-building, river erosion and deposition, ice-cap glaciation, volcanism, and other events and processes that have...

https://pubs.usgs.gov/imap/i2720/
Coastal Relief Model

The National Geophysical Data Center (NGDC) (described in the January 17, 1997 Scout Report) provides online images of US Northeast and Southeast Atlantic Coastal Relief Models. The Coastal Relief Gridded database "provides the first comprehensive view of the US Coastal Zone; one that extends from the coastal state boundaries to as far offshore as the NOS hydrographic data will support a...

https://www.ncei.noaa.gov/products/coastal-elevation-models
David Rumsey Map Collection

The David Rumsey Map Collection, which is provided by Cartography Associates, "contains to date over 7,180 maps online and focuses on rare 18th and 19th century North and South America cartographic history materials." The vast material provided for viewing and printing for personal use includes atlases, globes, books, maritime charts, and a great deal more. Because of the large number of pieces,...

https://www.davidrumsey.com/
Major Land Resource Areas

This interactive map from the US Department of Agriculture displays US land use areas by color. Clicking on a region of the map takes you to a page featuring a blown-up map and a paragraph describing the major land use of the area (e.g., agriculture, residential, industrial, etc.). From there, you can also access regional elevation, climate, water, and soil information.

https://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/surve...
National Cooperative Geologic Mapping Program

The National Cooperative Geologic Mapping Program (NCGMP) is "the primary source of funds for the production of geologic maps in the United States." The NCGMP was created by the National Geologic Mapping Act of 1992 and its work includes producing surficial and bedrock geologic map coverage for the entire country. The program has partnered with a range of educational institutions, and this site...

https://www.usgs.gov/programs/national-cooperative-geologic-...
National Elevation Dataset

The National Elevation Dataset is a product offered by the USGS that "is designed to provide national elevation data in a seamless form with a consistent datum, elevation unit, and projection." The interactive GIS map interface can view various layers of data from all over the US, creating informative and useful maps, which can be printed or ordered in CD format. The handy "help" button provides a...

https://www.usgs.gov/programs/national-geospatial-program/na...
Online Maps and Data

From the California Geological Survey, the Online Maps and Data site contains information focused on natural hazards. Topics include minerals, earthquakes, and landslide and erosion hazards. The site also includes the General Location Guide for Ultramafic Rocks in California. The site also has links to a publications page and a new interactive mapping program called the Seismic Hazards Mapping...

https://maps.conservation.ca.gov/