SEG Millennium Edition, powered by Geofacets

SEG Millennium Edition is a web-based application that connects geoscientists to geologic maps extracted from peer-reviewed papers from Economic Geology. Easily discoverable on a map-based interface, each map contains a link to the source paper, with the ability to download the map into multiple file formats, allowing integration with Petrel™, ArcGIS™, Google Earth™, and PowerPoint®.

This exclusive benefit, customized for SEG members, serves as a strong complement to SEG's existing archive of 9,000+ articles of Economic Geology. Start exploring today!

SEG Member Access

Quick Start Guide

SEG Millennium Edition FAQs

In September of 2012, SEG partnered with Elsevier to deliver over 100 years' worth of SEG scientific maps through Geofacets. Read the Elsevier press release.

The SEG Millennium Edition offers over 5,500 maps from Economic Geology (years 2000-present) with maps being added from current issues as they are published. For access to the entire selection of SEG maps, you can subscribe to Geofacets™ which offers, in aggregate, access to over 750,000 maps from over 10 leading geological societies and research institutions, plus over 1 million additional assets such as tables, plots, graphs, stratigraphic columns/wells/cores, profiles, and much more.

Beginning January 2019, SEG Millennium Edition will be included in all SEG membership categories.

No. The value of SEG Millennium Edition lies not only in access to the maps included in Economic Geology, but also in access to the contextual information for the map made available in a full-text, read-only PDF of the associated journal paper.

While all available maps are downloadable as TIFF or JPEG files, there are some maps that could not be georeferenced, possibly for the following reason(s):

  • May have been hand-drawn with errors introduced, which is common to maps generated prior to the mid-1990's when computers were not regularly used
  • Scale could not be determined or is distorted
  • Our modern day coordinate system does not apply, i.e., for paleogeographic maps which depict geographic locations and movement of continents through geologic time
  • The geographic coordinate system or projection cannot be determined
  • No geographic coordinates and/or identifiers (e.g., countries, cities, etc.) that can be used as a reference point

Yes. You can integrate content with your own proprietary data and maps by downloading and importing our maps into external software programs. Download GeoTIFF files to integrate into a GIS program, KMZ files to integrate into Google Earth, and JPEG files to integrate into PowerPoint or similar presentation software. Not all maps are available as a GeoTIFF or KMZ file.

No. Only papers containing maps are included.

Maps are intended for internal purposes only, and all users must comply with copyright laws. Access to maps via this platform does not imply right to use or reuse for any commercial purposes or public display without consent from SEG. Terms and conditions for map use may be accessed via the "Detail Window" included on each map in the platform.

Maps are available at a variety of scales, depending on the publication and maps the author chose to convey geospatial information.

Maps are extracted as is from papers and will only have a key/legend if the original map contained one. Depending on map format, you may need to view the "original image" tab in the Detail Window or the original publication.

Georeferenced maps are only available as raster (GeoTIFF/KMZ formats) at this time.

Maps are georeferenced by trained staff and must pass strict screening criteria to ensure proper geographic information is present before being georeferenced. The map must contain an adequate number of coordinate pairs (marked latitude/longitude intersections) and/or geographic identifiers must exist in at least three map quadrants for a map to be georeferenced. All other maps (about 25%) are geolocated (approximate map location is determined using information from the caption or title).

Georeferenced map alignment accuracy is checked by:

  • Visually comparing the alignment of map control points with a basemap.
  • Assessing the root mean square (RMS) error of the georeferenced control points compared to control point on the basemap. Lower RMS error indicates that control points on the basemap and georeferenced map are closely aligned. However, alignment error may still be present in maps with a low RMS error.
  • Comparing the measure of the scale bar to the same distance measured on the base map, if present.

Cross-sections or other geological interpretations depends on the geographic area of interest and the research publications that exist in that area.