How are these different from the other geology links?
The links at the top of the page (Home, Books, Encyclopedias, etc.) will guide you through the entire process of research for all aspects of geology. For the select disciplines listed in the "Specific Subjects within Geology" tab, and in the left column, I have gathered resources specific to the subject to make your research easier. Use of the links under the specific subjects should not preclude you from looking at the general sources first. Indeed, you should.