Geology Links


US Geological Survey

California Geological Survey

Geological Society of America

American Geophysical Union

South Coast Geological Society

National Association of Geoscience Teachers


General Geology Topics

Glossary of Geology -- Houghton-Mifflin

Earth Scientist's Periodic Table

Plate Tectonics -- a USGS Tutorial

Plate Tectonics -- James Marshall University

Earth Science Picture of the Day

NOAA Solar Calculator

NIST Correct Time

Geologic Time Scale


Minerals and Rocks


Introduction to Minerals

Mineralogy Database

Igneous Rocks

Sedimentary Rocks

Metamorphic Rocks



Earthquake Bulletin -- USGS

Northern California Earthquake Center

UC Berkeley Seismology Lab

Cal Tech Seismology Lab



Volcano World -- Oregon State University

How Volcanoes Work -- San Diego State

Eruptions: A blog about volcanoes

Alaskan Volcano Observatory

California Volcano Observatory

Cascades Volcano Observatory

Hawaiian Volcano Observatory

Yellowstone Volcano Observatory


Environmental Issues

Real Climate

NOAA -- Abrupt Climate Change

The Discovery of Global Warming

EPA -- Drinking Water Quality

Skeptical Science


The Solar System


The Nine Planets

Solar System Dynamics -- JPL

Heavens Above

Jet Propulsion Laboratory

Griffith Observatory

The Analemma

Astronomy Picture of the Day


Schools and Careers

Geology Careers

Cal State Fullerton Geological Sciences

Cal State Long Beach Geological Sciences

San Diego State Geological Sciences

UCLA Earth and Space Sciences

UC Berkeley Earth and Planetary Sciences

Pomona College Department of Geology