This online resource for GIS and geospatial data has compiled data from a wide range of GIS Web sites located on the Internet. Some of the data is free once you set up a user account to be part of the GeoCommunity, with additional data available for a fee using the Premium option. Downloading may require the user to be proficient in GIS and own relevant software. Download options include: Digital...

If your research or interests lie in the geology of South Dakota, then the state's Geological Survey Program Web site is for you. Offered are online publications and maps, a geologic reference database, a lithologic logs database, digital base maps, a water quality database, and several other quality information sources worth checking out.

Ride the Web Geological Time Machine at the University of California Museum of Paleontology. Click on an item in the list of 25 geological periods [15 of the 25 periods are available now, the remainder to be completed] and view a page describing each period, its subdivisions, and the life and fossils of that period.

This Geological Survey of Ireland website can increase the public's excitement about geology by offering simple, straightforward materials on the basics of geology. The website is divided into numerous themes such as Volcanoes, Rocks, Caves, and the Water Cycle. The links from each of the headings introduce the topic with simple descriptions and remarkable pictures and offer easy experiments when...

The Geophysical Studies of the Las Vegas Urban Corridor Area are part of an integrated effort to "geologically characterize the seismic hazards, water resources, and crustal structure of this rapidly growing urban corridor" by the USGS. The informational Web site contains a gravity map of the Las Vegas region, an aeromagnetic map, and a publications link with a list of over a dozen references....

Geotech.org, a geology informational Web site, is made available by middle school science teacher James M. Fausnaugh of Lakewood, Colorado. This collection of descriptions, illustrations, and photographs cover basic geology, mineralogy, geochemistry analogs and methods, naming strategraphic units, the geologic time scale, dinosaur facts, and much more. Anyone with little to moderate knowledge of...

The International Earth Rotation and Reference Systems Service (IERS) was created to provide the astronomical, geodetic, and geophysical communities with standards, geophysical data, earth orientation parameters, and celestial and terrestrial reference systems. After discovering the structure and history of the Service, users can discover the many Product, Technique, and Combination Centres...

The International Geothermal Association's (IGA) goal is "to encourage research, development, and utilization of geothermal resources worldwide through the compilation, publication, and dissemination of scientific and technical data and information." The website offers a multitude of information about geothermal energy around the world. Students can find educational resources about the history,...

The Illustrated Glossary of Alpine Glacial Landforms is maintained by the University of Wisconsin Stevens Point's Department of Geology and Geography. This simple but well done site lists over twenty landforms as either an erosional landform, depositional landform, or an ice feature -- each including a brief description. Clicking on the corresponding link brings up a page with a photograph, a...

Have you ever wanted to learn more about the Permian Reef Complex of the Guadalupe Mountains? Probably not, but Dr. Peter A. Scholle, the Director and State Geologist of the New Mexico Bureau of Mines & Mineral Resources of New Mexico Tech has provided a complete virtual field trip for those who would. Visitors can read and view pictures of the area, the structural history of the mountains, the...