Special Offer for Members:

Access Geofacets

By accessing the GSA Millennium Edition powered by Geofacets, you agree to the Terms and Conditions. GSA members can use their GSA username and password to log in.

What is Geofacets?

The Geological Society of America now participates in Geofacets, a web-based research tool that offers access to an extensive database of georeferenced geological maps. With intuitive features designed for geoscientists working in upstream oil and gas exploration, it enables users to efficiently and confidently assess a region or basin's geologic characteristics and potential. Users can navigate fluidly between the downloadable maps—available as GeoTiff, KMZ, and more—and the original journal and book content.


For more information, including a list of all of GSA's publications that appear in Geofacets, please visit the Geofacets page.

GSA Millennium Edition versus Institutional Geofacets Subscription
Subscription includes maps from:
GSA Member
(Millennium Edition)
(Contact Geofacets)
GSA Bulletin
Special Papers
v. 343–present
v. 1–present
v. 193–present
v. 1–present
Field Guides
v. 2–present
v. 1–present
Reviews in Engineering Geology
v. 14–present
v. 1–present
Decade of North American Geology (DNAG)
Not included
Note: Geofacets does not include materials from GSA Today or Environmental & Engineering Geoscience.

Individual Member Access

GSA and Elsevier have collaborated to provide GSA members with a unique opportunity to gain individual access to thousands of geological maps from GSA's trusted publications through the Geofacets platform, an innovative map-based research tool designed by geoscientists for geoscientists. These maps are downloadable, georeferenced, and accompanied by metadata, article abstracts, and links to GSA's original source articles. For more information or to view an instructional webinar, visit Geofacets.

Your GSA membership provides access to 30,000+ maps that were published in GSA's books and journals from 2000 to the present.

Institutional Access

Institutional Geofacets subscribers have access to all 80,000 maps from GSA's content, including the Decade of North American Geology, GeologyGSA BulletinGeosphereLithosphere, and all four GSA book series.

For institutional demos and pricing, please visit the Geofacets page.

Terms and Conditions

By accessing or using the Geofacets–GSA Millennium Edition via this site, you ("The Registrant") agree to be bound by the terms and conditions below:

  • Access to the GSA Millennium Edition powered by Geofacets is not granted until full payment of membership fees to GSA has been made;
  • Registrants may extract individual maps from the GSA Millennium Edition powered by Geofacets and upload them on and integrate them into their internal secure geologic software analysis systems for internal and personal research purposes only; and
  • Registrant acknowledges that Elsevier as the owner of the Geofacets products shall have the right to enforce any non-compliance with the mentioned terms and conditions of use; and
  • Access to the GSA Millennium Edition powered by Geofacets is conditional upon an active membership of GSA.  Your access rights shall automatically expire upon termination or expiration of your membership with GSA.

In addition, you agree to, and shall comply with, the online Terms and Conditions of geofacets.com. These Terms and Conditions expressly incorporate by reference and include the site's privacy policy and any guidelines, rules, or disclaimers that may be posted and updated on specific web pages or on notices that are sent to you. If you do not agree with these Terms and Conditions, please do not use this site.