Geology HOME - Subjects


" is a global science gateway—accelerating scientific discovery and progress through a multilateral partnership to enable federated searching of national and international scientific databases and portals. "


ge Use Google Earth to search for specific locations worldwide via satellite imagery, topographical or geographical maps.


oneGeology logo Use this dynamic portal to explore and map geological data anywhere in the world.


3D Geology of National Parks: 3-D image gallaries of US national parks provided by the U.S. Geological Survey. To view the 3-D images you will need red/blue 3-D glasses, regular images are also available.


ABOUT search engine - Geology: This subject search engine offers links to geology dictionaries, state geologic maps, guides to rocks and minerals. Topics include: volcanoes, earthquakes, tectonics, fossils, landforms and structures.


California Geological Survey: Links to geological sites prepared by the California Division of Mines and Geology. This site includes the geology of major metropolitan areas in California including digital images of earthquake faults and maps of seismic hazard zones.


California Geology Index : "The California Geology magazine is no longer being published however the California Geological Survey has provided an index to back issues. The index dates back to 1991 and shows issues of California Geology that are available."


California Geoportal: The California Department of Technology has provided this interactive Geoportal that integrates existing GIS software with a geography based search capability. Map galleries and a learning center facilitate access to geographic data information.


California Geotour: "An interactive index of Web pages of geologic field trip guides and related Web sites compiled by the California Geological Survey."


CiteSeer: A research index to digitized scientific documents and other literature sponsored by The National Science Foundation and Nasa. Search capability provided by Google and hosted by Penn State's College of Information Sciences and Technology.


Desert Ecosystems: Use the desert web links to discover geologic information on ecology and topography throughout the deserts in North America.


Digital Library for Earth System Education: "DLESE supports Earth system science education by providing access to high-quality collections of educational resources, eEarth data sets and imagery, including the tools and interfaces that enable their effective use in educational settings. Support services are intended to help educators and learners effectively create, use, and share educational resources. Communication networks are provided to facilitate interactions and collaborations across all dimensions of Earth system education."


Earth and Ocean Sciences: "This site is a gateway to government science information and research results and provides a search of over 36 scientific databases and 200 million pages of science information with just one query, and is a gateway to 1,850+ scientific websites. Two major types of information are included—selected authoritative science websites and databases of technical reports, journal articles, conference proceedings, and other published materials."


Earth Sciences & Geologic Map Library: The UC Berkely Library provides Geologic maps show the distribution of Earth's materials at the planet's surface. The Earth Sciences & Map Library has a large collection of geologic maps covering various parts of the world. Geologic maps have been acquired from the U.S. Geological Survey, various state geological surveys, and foreign agencies. Many geologic maps are available online.


Earth Science World: Earth Science World offers information on geoscience, and provides acces to it's image bank, which contains photographs of all aspects of Earth Science, available to the public, educators, and the geoscience community free of charge.


Encyclopedia of Earth: The EOE is an "electronic reference about the Earth, its natural environments, and their interaction with society. The Encyclopedia is a free, fully searchable collection of articles written by scholars, professionals, educators, and experts who collaborate and review each other's work. The articles are written in non-technical language and will be useful to students, educators, scholars, professionals, as well as to the general public."


Geology Central by Santa Monica College: Offers a "Virtual Geology Field Trip" with many links to different kinds of land formations such as beaches, deserts, earthquake faults etc. with related links to each. Under links are categories such as Academic Institutions, Beaches, Deserts, etc.


Geology and Earth Science Highlights : List of links in such categories as Plate Tectonics, Tsunamis, Earthquakes, Floods, Hazards, Landslides, Maps, Seafloor Geology, and more. is published by Hobart M. King, Ph.D., Associate Professor of Geology at Mansfield University of Pennsylvania. Dr. King holds degrees in geology from California, University of Pennsylvania (B.S. 1975) and West Virginia University (M.S. 1978, Ph.D. 1982).


Ibiblio: "Home to one of the largest "collections of collections" on the Internet, is a conservancy of freely available information, including software, music, literature, art, history, science, politics, and cultural studies. is a collaboration of the Center for the Public Domain and The University of North Carolina - Chapel Hill."


International Tsunami Information Centre: "ITIC maintains and develops relationships with scientific research and academic organizations, civil defense agencies, and the general public in order to carry out its mission to mitigate the hazards associated with tsunamis by improving tsunami preparedness for all Pacific Ocean nations."


Lamont-Doherty Earth Observatory: Located at Columbia University, this website has information about climate, oceans, and environmental terrestrial ecology including the latest developments about Biosphere 2.


Landsat Program: "The Landsat Program is a series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey. Since 1972, Landsat satellites have collected information about Earth from space. This science, known as remote sensing, has matured with the Landsat Program."


Michigan Technological University Volcanoes Page: "Provides information about volcanoes to the public and complements other informational sites on the web."


Mineral Database: "This mineral database contains 4,442 individual mineral species descriptions with links and a comprehensive image library. Mineral data for individual species are linked to mineral tables by crystallography, crystal structures, X-Ray powder diffraction, chemical composition, physical and optical properties, Dana's New classification, Strunz classification, mineral specimen images, and alphabetical listings of mineral species. There also are extensive  links to other external sources of mineral data and information."


Mineralogy: "This mineral database contains 4,442 individual mineral species descriptions with links and a comprehensive image library."


Monitoring the Environment in Real-Time: Real-time Educational Monitoring Of The Environment (REMOTE) is a new interdisciplinary project that will provide students with real-time access through a web site to data on environmental conditions at UC-Davis field sites. Use these links to related sites. Managed by Guillermo Jimenez, Department of Land, Air, and Water Resources at University of California, Davis. Link to the geological section of the national atlas developed by USGS. The maps can be customized and used to locate earthquake faults, impact sites, metamorphic areas, landslides, and much more.


National Geologic Map Database: The USGS site for geoscience resources including maps and related data about geology, hazards, earth resources, geophysics, geochemistry, geochronology, paleontology, and marine geology.


Ocean Co2: This site is under the direction of the U.S. Department of Energy, Environmental Science Division. The site provides data on global coastal programs, waves research, and global ocean surface data related to carbon dioxide analysis.


Portland State University Geological Links: A comprehensive directory to Internet websites in geology.


U.S. Geological Survey: "The United States Geological Survey provides scientific information to describe and interpret America's landscape by mapping the terrain, monitoring changes over time, and analyzing how and why these changes have occurred." Includes a list of links to major volcanoes, earthquake sites and water resources information.


USGS Library: "Materials within the library system include books and maps dating back to the 16th and 17th centuries. Other materials include a nearly complete set of the various State Geological Survey publications and a virtually complete set of USGS topographic maps."


Wind Energy Resource Atlas: "This atlas estimates wind energy resource for the United States and its territories. and indicates general areas where a high wind resource may exist. This information is valuable to wind energy developers and potential wind energy users because it allows them to choose a general area of estimated high wind resource for more detailed examination."


American Avalanche Association: This association provides online access to the following publicaton: "Snow, Weather, and Avalanches: Observational Guidelines for Avalanche Programs in the United States. In addition, the Association has made selected articles from their journal entitled Avalanche Review available in full-text.


American Federation of Mineralogical Societies: The AFMS is a non-profit educational federation of seven similar regional organizations of gem, mineral and lapidary societies.


Atlas of Our Changing Environment: "This interactive atlas from the United Nations Environment Programme provides useful information to all interested in both natural and human-made changes in our planet over the last 30-40 years."


California Coastal National Monument Geologic Characterization: A full-text geologic report in pdf by Geologist Charles E. Shaw which was published in July 2007 by the U.S. Department of the Interior, Bureau of Land Management. The California Coastal National Monument (CCNM) is defined as being "all unappropriated or unreserved lands and interests in lands owned or controlled by the United States in the form of islands, rocks, exposed reefs and pinnacles above mean high tide within twelve nautical miles of the shoreline of the State of California".


California Environmental Resources Evaluation System: "CERES is an information system developed by the California Natural Resources Agency to facilitate access to a variety of electronic data describing California's rich and diverse environments. The goal of CERES is to improve environmental analysis and planning by integrating natural and cultural resource information from multiple contributors and by making it available and useful to a wide variety of users."


Earthquake Hazards Program: The USGS Northern California Region website provides very technical information on recent earthquakes and earthquake hazard for the Western Region of the United States.


El Dorado County Official Site: Search this site to find PDF reports on El Dorado County geologic studies such as Environmental Impact Reports.


Geologic History of the Northern Sierra Nevada: This webpage is a supplement to Paleobotany field trip to the Sierra Nevada published by the University of California Museum of Paleontology.


Geological Society: Founded in 1807 and housing one of the largest geological libraries in the world, the Geological Society of London is a global leader in Earth science publishing, and is renowned for its cutting edge science meetings. It is a vital forum in which Earth scientists from a broad spectrum of disciplines and environments can exchange ideas, and is an important communicator of geoscience to government, media, those in education and the general public.


Geology of the California Central Coast: Field trip guide for Dr. Mary Leech's Petrology class held at San Francisco State University. Contains detailed information on the Big Sur Area, Coast Ranges Province and the Great Valley Province.


Geology of National Parks: Use the standard photo tour tab on each National Park webpage to locate individual trail maps by location thoughout the United States.


Geology of Northern California: "This full-text resource provides an overview of the physiographic features and geological history of northern California's magnificent landscape. Written to accompany any college-level earth science course, this pdf module explores the rich geological heritage of northern California." Authored by Frank DeCourten, Professor of Earth Science at Sierra College in Grass Valley, California.


Geology: Plate Tectonics: University of California at Berkeley Geology Department has provided links to the history behind plate tectonics, the mechanism driving plate tectonics and animations covering the last 750 million years.


Global Volcanism Program: "The Smithsonian's Global Volcanism Program seeks better understanding of all volcanoes through documenting their eruptions - small as well as large - during the past 10,000 years."


Goddard Space Flight Center: "The mission of the Goddard Space Flight Center is to expand knowledge of the Earth and its environment, the solar system and the universe through observations from space. The Center, located in a Maryland suburb outside of Washington, DC, is home to the Nation's largest organization of combined scientists and engineers dedicated to learning and sharing their knowledge of the Earth, solar system, and Universe."


How Volcanoes Work: "An educational resource that describes the science behind volcanoes and volcanic processes. The site is sponsored by NASA under the auspices of Project ALERT (Augmented Learning Environment and Renewable Teaching). It is intended for the education of university students of geology and volcanology and teachers of earth science. This website was constructed by Dr. Vic Camp (copyright), Department of Geological Sciences, San Diego State University."


Mariana Islands: "The Mariana Islands are a classic example of an island arc, a curved line of stratovolcanoes that rise up from the ocean floor." The information on this page is provided by the Department of Geosciences at Oregon State University.


Marine Realms Information Bank: "The U.S. Geological Survey (USGS) provides three digital libraries for coastal and marine science to serve the needs of a diverse audience-scientists, public servants, educators, and the public."


Mineralogical Society of America: "The MSA was founded in 1919 for the advancement of mineralogy, crystallography, geochemistry, petrology, and promotion of their uses in other sciences, industry, and the arts."


National Park Service: "Established by President Woodrow Wilson in 1916, the National Park Service is a bureau of the U.S. Department of the Interior managing the 401 parks of the National Park System. The NPS also helps to admister affiliated sites such as the Register of Historic Places, National Heritage Areas, Wild and Scenic Rivers, Historic Landmarks, and Trails."


National Scenic and Historic Trails: "National Historic Trails are extended trails that closely follow a historic trail or route of travel of national significance. Designation identifies and protects historic routes, historic remnants, and artifacts for public use and enjoyment. The Bureau of Land Management is responsible for over 5,343 miles of 11 National Historic Trails."


National Trails System Publications: An extensive list of links prepared by the National Trails System through the National Park Service. Most of the PDF studies are free tull-text documents dating back to 1965, with current updates. Examples of trail studies include: Mormon Trail, Oregon Trail and Lewis and Clark Trail; Pony Express Stations of Utah, and Alaskan Gold Rush Trails. As some files are very large, the NPS recommends downloading the files to a hard drive as opposed to viewing over the internet.


Natural History of California: Geology professors at Sonoma State College have provided online chapter summaries on California's coastline, geology, including the Siera Nevada and Coast Ranges.


NRCS Soils Website: "Soils is part of the National Cooperative Soil Survey, an effort of Federal and State agencies, universities, and professional societies to deliver scientifically-based soil information." - "The Soil Extent Mapping (SEM) Tool displays interactive national maps of soil series, based on land area."


Ocean Explorer: "This site is designed to provide the public with information on NOAA's ocean exploration activities, especially those being undertaken as part of NOAA's new ocean exploration initiative. It is managed by the National Oceanic and Atmospheric Administration, U.S. Department of Commerce."


Plate Tectonics: Plate Tectonics describes the intricate design of a complex, living planet in a state of dynamic flux.


Plate Tectonics: Evoloving Earth: The geologists at the University of Michigan explain plate tectonics by using thheir "tectonic map of the world". This very visual site covers tectonic history, and the origin of volcanoes and earthquakes.


Tahoe Environmental Research Center: "The Tahoe Environmental Research Center (TERC) is dedicated to research, education and public outreach on lakes and their surrounding watersheds and airsheds. Lake ecosystems include the physical, biogeochemical and human environments, and the interactions among them. The Center is committed to providing objective scientific information for restoration and sustainable use of the Lake Tahoe Basin."


Tectonic Wedging in the Coast Ranges : "Rocks in California record a long history of subduction during the Mesozoic and early Cenozoic, followed by strike-slip offsets along the San Andreas fault system during the late Cenozoic." This geologic study has been written by Maureen Berlin, GEOL 5690, Tectonics of the Western U.S., Fall 2005.


Tsunami and Earthquake Research :The USGS conducts multidisciplinary scientific research on tsunamis and earthquakes on the coastal and offshore areas of California, Oregon, Washington, Alaska, Hawaii, and other US Pacific Islands; and in other waterways of the United States.


USGS Library: This site provides USGS reports on earth science. Most publications located at this site and other USGS sites can be located by subject, author, date, USGS series or publication series number by using the reports and thematic maps electronic Publications Warehouse.


Visible Earth: This site provides a catalog of NASA images and animations of our home planet.


VolcanoWorld: This site provides comprehensive information on volcanoes, including photos of recent eruptions. The information on this page is provided by the Department of Geosciences at Oregon State University.


Water Resources Reports: This site provides "USGS reports on water resources. Most publications located at this site and other USGS sites can be located by subject, author, date, USGS series or publication series number by using the reports and thematic maps electronic Publications Warehouse."


Wheeldon, George: Professor Emeritus Wheeldon is a master teacher in all the Earth Sciences at Folsom Lake College, and has been teaching in area colleges since 1967. "A student, teacher, professional geologist and all-around curiosity seeker, George has amassed an amazing storehouse of knowledge that he shares on a daily basis with his students, colleagues, and friends."