Geologic Maps
Geologic maps for the world, for countries, for localities and for eras in the past.
The Web-Wide World
Digital Earth promises a vast active global geographic database, a live 3D world map.
Digital Earth promises a vast active global geographic database, a live 3D world map.
How to Read Geologic Maps
This three-page article introduces and illustrates some of the particular features found on these maps.
This three-page article introduces and illustrates some of the particular features found on these maps.
Geologic Map Colors, US Geological Survey
The USGS colors are used in American geologic maps.
The USGS colors are used in American geologic maps.
Geologic Map Colors, International Standard
The basic color set used by European countries for geologic maps.
The basic color set used by European countries for geologic maps.
USGS National Geologic Lexicon
GeoLex is a nearly complete database of U.S. geologic names, including both rock units and time units.
GeoLex is a nearly complete database of U.S. geologic names, including both rock units and time units.
Geo-Quiz Number 20: Geologic Maps
Who wants to be a geo-whiz? The trivia game: GEOLOGIC MAPS
Who wants to be a geo-whiz? The trivia game: GEOLOGIC MAPS
Topographic Map Symbols
A good introduction to those information-packed maps from the U.S. Geological Survey.
A good introduction to those information-packed maps from the U.S. Geological Survey.
The David Rumsey Historical Map Collection
This awesome online map collection includes many classic geologic maps from the last three centuries—just do a search for "geology."
This awesome online map collection includes many classic geologic maps from the last three centuries—just do a search for "geology."
Historic Geologic Map Color Standards
Here's a table of the traditional colors used on old geologic maps, USGS and International standards.
Here's a table of the traditional colors used on old geologic maps, USGS and International standards.
Onegeology.org
Follow this effort to put an increasingly detailed map of world geology online.
Follow this effort to put an increasingly detailed map of world geology online.
Google Earth
There's no better application for just browsing the globe, and many geologic entities are marked on it already.
There's no better application for just browsing the globe, and many geologic entities are marked on it already.
Airborne Laser Swath Mapping (ALSM)
This hot technology allows precise mapping of large tracts (for instance, ground zero in New York City) in just hours, like aerial photos but fully digital. The University of Florida does leading research with this tool.
This hot technology allows precise mapping of large tracts (for instance, ground zero in New York City) in just hours, like aerial photos but fully digital. The University of Florida does leading research with this tool.
This Dynamic Planet
A collaboration of the USGS, Smithsonian Institution and Naval Research Laboratory brings you an an excellent interactive world tectonic map.
A collaboration of the USGS, Smithsonian Institution and Naval Research Laboratory brings you an an excellent interactive world tectonic map.
The World Stress Map Project
Download worldwide data and maps of tectonic stress, or create your own custom map with the software on this site, run by the University of Karlsruhe, Germany.
Download worldwide data and maps of tectonic stress, or create your own custom map with the software on this site, run by the University of Karlsruhe, Germany.
WORLDBATH
View the world's bathymetry and topography, anywhere you like, from Lamont-Doherty Geological Observatory.
View the world's bathymetry and topography, anywhere you like, from Lamont-Doherty Geological Observatory.
Sea Surface Temperature Today
The Space Science and Engineering Center at the University of Wisconsin serves up the latest satellite map of the global ocean temperature.
The Space Science and Engineering Center at the University of Wisconsin serves up the latest satellite map of the global ocean temperature.
Seafloor Topography of the World
Click on it for gorgeous enlargements; includes the continents too. From UC San Diego.
Click on it for gorgeous enlargements; includes the continents too. From UC San Diego.
Marine Gravity Map of the World
This gravity map, compiled by satellite measurements, is subtly different from the topography map listed below. Compiled by Scripps Insitute of Oceanography, it's a better depiction of the seafloor in remote areas where ships rarely go. Click for detailed images and read the accompanying articles.
This gravity map, compiled by satellite measurements, is subtly different from the topography map listed below. Compiled by Scripps Insitute of Oceanography, it's a better depiction of the seafloor in remote areas where ships rarely go. Click for detailed images and read the accompanying articles.
The Lower Mantle
Adam Dziewonski's group at Harvard made this map of the "660-km surface," where the lower mantle begins.
Adam Dziewonski's group at Harvard made this map of the "660-km surface," where the lower mantle begins.