General geology, rocks and minerals, and places to visit in the state's physiographic regions (including PDF factsheets for downloading)
Summaries of common Kansas fossils
Photos and descriptions of sites of geologic (and other) interest in Kansas
Descriptions of various rocks and minerals found in Kansas, including mineral ID tables and hardness scale
Overviews of various geology topics, ranging from Earth's age to the state's mining history
Online guidebooks, descriptions, and photos from KGS public field trips in Kansas