Other
Geology.com: Rocks: Pictures of Sedimentary Rocks
Presents photographs of examples of clastic, chemical, and organic sedimentary rocks, with short descriptions underneath each rock image. Each rock name is also linked to its own dedicated page with a great deal of additional information...
Other
Speleology: Gypsum Caves
An explanation of how Gypsum Caves form and where they are located. A picture of the Bararossahohle cave in Germany.
CK-12 Foundation
Ck 12: Earth Science: Sedimentary Rock Classification Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about how sedimentary rocks are classified. Includes a few questions to check for understanding.