In this geological time line worksheet, students compare the time lines they created of the earth's history to the history of Missouri. They answer questions about the eras, the scale of the time lines and the major events that occurred...

Students investigate fossils found in the Decorah Shale found in the Mississippi River bluffs. They will determine the name and description of the most common fossils. They will also determine how old the fossils are and what the...

[Free Registration/Login may be required to access all resource tools.] Looks at how stratigraphy can be used to determine the relative ages of rocks, how unconformities occur, ways to match rock layers in different areas, and how...