California Geo-organizations

• San Diego Association of Geologists
• Fallbrook Gem and Mineral Society
• San Diego Natural History Museum, Mineralogy Info
• California Geological Survey (formerly CDMG)
• AAPG Pacific Section
• Natural History Museum of Los Angeles County
• Page Museum - La Brea Tar Pits

General Geo-organizations

• Geology News
• webGeology (Norway)
  Flash Animations Illustrating Various Geological Principles
• American Geological Institute (AGI)
• Geological Society of America
• U.S. Geological Survey
• American Association of Petroleum Geologists
• The Field Museum of Natural History, Chicago
• 
  Earth Science Week 2008, October 12 - 18
  This year's theme: "No Child Left Inside"
• Earth Science Picture of the Day
• INEGI (geographic, demographic and economic information of Mexico)

Volcanoes

• Global Volcanism Program, Smithsonian Institution
• Northern Arizona University Webcam (live view of San Francisco Peaks)
• How Volcanoes Work (Vic Camp, SDSU)
• Volcano World --- formerly at U. of North Dakota, my alma mater
  now at Oregon State University
• Volcano Cam - Live Mt. St. Helens shot
• Stromboli Net (Italy)

Earthquakes

• USGS » Latest Earthquakes in the USA - Last 7 days
• Volcanic and Seismic Hazards on the Island of Hawaii
• Recent Earthquakes in California and Nevada
• Faults of Southern California --- 'clickable' fault maps
• Saint Louis University Earthquake Center
  Information about mid-continent earthquakes
• Latitude/Longitude Distance Calculator

Visualizing the Earth - Map and Air/Space Photo and Digital Imaging Sites

• Google Earth Software - Download It - Try It - You'll Like It !!!
• Educational Multimedia Visualization Center of the Dept. Geological Sciences, U.C.S.B
  (Tanya Atwater's WONDERFUL plate tectonics animations!)
• NOAA's Geomagnetic Declination Calculator
• GeoDIL - a Geoscience Digital Image Library
• Cornell U's Digital Earth
• DLESE-The Digital Library for Earth Science Education
• Color Landform Atlas of the United States
  (Johns Hopkins University)
• National Geospatial-Intelligence Agency (NGA),
  formerly known as National Imagery and Mapping Agency
  (the Agency formerly known as Defense Mapping)
• Map Town -
  A Very Complete Online Store in Calgary, Alberta
• The Map Centre -
  Both Online and "Brick and Mortar" (in San Diego)
• MapQuest - The original on-line location finder
• NASA WorldWind -
  the forerunner of Google Earth, in many ways
• Earth From Space (Johnson Space Center)
• Destination Earth: NASA's Earth Science Enterprise
• Images of Wisconsin
  Dr. Todd Fonstad, Emeritus Geography Professor, UW-Oshkosh
  (he was my neighbor when I was growing up in Waupaca)
• QuakeMap -
  GPS mapping software displays aerial and topo maps from terraserver (shareware)

College Courses On-line

• Intro to Petrology - University of British Columbia
• Space Resources - University of Wisconsin
  Taught by the only geologist to have taken a field trip to the moon!
• Gems and Gem Materials, Jill Banfield, UC Berkeley
  (formerly "Gems and Precious Stones" at U of Wis)
• Hard Rock Geology Home Page - Humboldt State University
  Includes thin section photos and descriptions
• Intro to GIS - Oregon State University
  Dawn Wright, Department of Geosciences

General Geology

• Geomorphology From Space (NASA/JPL)
• The Virtual Geosciences Professor
• A Geologist's Lifetime Field List
• Dr. Ron Blakey, Geology Professor, Northern Arizona University
• Bill Arnett's Planet Earth Page
• Geochemistry On the World Wide Web
• WebElements Periodic Table of the Elements

Rocks and Minerals

• Rob's Granite Page
• Geokem - Igneous Geochemistry
• Athena Mineralogy; Pierre Perroud (Switzerland)
• MinDat.org
  STUNNING photos of mineral specimens!
• Amethyst Mineral Galleries
• The EUROMIN Project
• The Nature of Diamonds (Am. Museum of Nat. Hist.)
• The Arkenstone Fine Mineral Specimens

Regional Geology and Miscellany

• GeoEpicenter.com, One of my students' photo projects webified - impressive!
• Chris Metzler's Geology of San Diego County: Field Trip
• San Diego Reader Roam-O-Rama Articles, by Jerry Schad
• Geology of the Grand Canyon
• Los Angeles Area Geology
  (formerly Geology of Santa Clarita and environs)
• Orange County Geology (Irvine Valley College)
• Independence Dike Swarm
• Arizona Geology Virtual Tourist
• Central Montana Geology
• The Geologic Story of the Great Plains
• Minnesota Geological Survey (check out the 'Virtual Egg Carton')
• Information Pages on Baja California
• New England Meteoritical Services
• Minnesota's Rocks & Waters - Winona State University
• Geology of Wisconsin Index
  Steven Dutch, UW - Green Bay

• Rise and Fall of San Diego: 150 Million Years of History Recorded in Sedimentary Rocks by Pat Abbott (1999)
• The Pennisular Ranges: A Geological Guide to San Diego's Back Country by Mike Walawender (2000)
• Geology of the Elsinore Fault Zone, San Diego Region: SDAG/SCGS Volume Number 31-2003 edited by Murbach & Hart (2003)
• Geology and History of Southeastern San Diego County, California: San Diego Association of Geologists Field Trip Guidebook for 2005 and 2006 edited by Bloom, Farquharson & Ziegler (2006)
• Understanding The Life Of Point Loma edited by Houk (2004)