GSA Digital Maps
The following open access digital maps have been published by the Geological Society of America under the Digital Maps and Charts series. They are listed here in chronological order. Our available printed maps can be found in the online GSA Store.
- Geologic Map of the Ricardo Group
- Geologic Map of Iron Mountain
- Geologic Map of Kramer Hills
- Geologic Map of the Buttes
- Geologic Map of the Fremont Peak Area
- Geologic Map of the Hinkley Hills
- Geologic Map of the Sleeping Beauty Area, Southern Cady Mountains
- Geologic Map of the Shadow Mountains
- Geologic Map of the Coso Range
- Geologic Map of the Mitchel Range and Waterman Hills
- Geologic Map of the Ankara Mélange
- Geologic Map of the East Sierran Thrust System
- Cenozoic Sedimentary and Volcanic Rocks of Macedonia
- Bedrock Geology of the West Grove Quadrangle PA-DE Piedmont
- Geologic Map of the Pliocene Hannegan Caldera, North Cascades, Washington
- Geological Map of the Curvature of Monterrey, Mexico
- Western Quail Mountains Geological Map
- Geologic Transect Across the Northern Sierra Madre Occidental Volcanic Field, Chihuahua and Sonora, Mexico
- Aeromagnetic Map of the Indian Wells Valley, East-Central California, and Surrounding Area
- Latest Quaternary Glacial and Periglacial Stratigraphy, Wind River Range, Wyoming
- Geologic Map of Santiaguito Dome Complex, Guatemala
- Geologic Map of Wilson Cliffs and Potosi Mountain Area, Nevada
- Notes on a Map of the 1961-2010 Eruptions of Volcán de Pacaya, Guatemala
- Geologic Map of the Wingate Wash Area, Death Valley National Park, California and Nevada
- Geologic Map of the Central Grapevine Mountains, Inyo County, California, and Esmeralda and Nye Counties, Nevada
- Geology of the Benson Lake Pendant, Western Yosemite National Park, Central Sierra Nevada
- Geologic map and structure of the west-central part of the Grant Range, Nye County, Nevada
- Structural Geologic Maps of Conjugate Normal-Fault and Strike-Slip Deformation Band Shear Zones in Navajo Sandstone
- Geology of the Tierras Blancas area in the southeastern part of the Acambay graben, central Mexico
- Callovian and Tithonian paleogeography of the Caribbean, Atlantic, and Tethyan realms
- Geologic Map of the Northern Lava Mountains and Summit Range, San Bernardino County, California
- Geologic Map of the Southern Slate Range and a Portion of the Central Garlock Fault, China Lake Naval Weapons Station, San Bernardino County, California
- Maps of the Southern Kenya Rift
- Geologic Map of the Sierra Bacha, Coastal Sonora, Mexico
- Geology of the Tecolotlan Graben, Jalisco, Mexico
- Geologic and Geoarchaeological Mapping of the Sanctuary of Zeus, Peloponnesus, Greece
- Geologic Map of Barbados: Volume II
To reach the U.S. Geological Survey's collection of more than 200,000 historical USGS topographic maps, please click here. The USGS's National Geologic Map Database can be accessed at http://ngmdb.usgs.gov/.