Earth Sciences

Atlas of Igneous & Metamorphic Rocks, Minerals & Textures

Geologynet 

Good Geology Resources

Earth & Environmental Sciences 2120 - PETROLOGY - Lecture Notes

Skeptical Science 

Skepticism of global warming skepticism

Geology: Plate Tectonics

Ocean & Weather Basics

U.S. Geological Survey 

Government funded Science organization made in 1879. You can find MANY things there. Check out their About page for more info! Dr. James Calvert 
 * USGS Volcanoes
 * USGS Topographic Maps Viewer
 * USGS Geologic Maps of U.S. States

Some interesting Geology articles & explanations

Wave Motions in the Oceans 

<span style="color:rgb(68,68,68);font-family:arial,sans-serif">Notes on this topic in geophysics

Geochemistry textbook

<span style="color: rgb(68, 68, 68); font-family: arial,sans-serif;">Drafts of chapters; book is apparently to be published soon, but the drafts are available free online

<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)">One Geology 

<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)"><span style="color:rgb(68,68,68);font-family:arial,sans-serif">General geological maps for the earth

'Tools / Reference / Exercises'
<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)">Mineralogy database 

<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)"><span style="color:rgb(68,68,68);font-family:arial,sans-serif">Most extensive online reference for minerals; includes photos, localities, diagrams, you name it

<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)">Wolfram Alpha/ Earth Sciences 

<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)"><span style="color:rgb(68,68,68);font-family:arial,sans-serif">A huge <span style="color:rgb(68,68,68);font-family:arial,sans-serif">knowledge database for earth science which contains information about various topics

<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)">'Bad Meteorology'

<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)"><span style="color:rgb(68,68,68);font-family:arial,sans-serif">Great website to learn about what actually causes meteorological events rather than the old wives tale version

<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)">'EarthRef '

<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)"><span style="color:rgb(68,68,68);font-family:arial,sans-serif">HUGE amount of data, including element concentrations of various reservoirs in different earth systems (in GERM section), and paleomagnetic data.

<p style="font-family:trebuchet ms,sans-serif;color:rgb(0,0,0)">The Paleobiology Database ' 'collection-based occurrence and taxonomic data for marine and terrestrial animals and plants of any geological age  PhET Earth Science  Java apps hosted by University of Colorado, topics include glaciers and the greenhouse effect