1. CANDY LAND A Study of Ohio Topography CANDY LAND A Study of Ohio Topography Tim Herrmann, Haley Todd, Justin Yeazell GEO 204 Dr. Michael Sandy April 25, 2007

2. Lesson Overview Review of Previous Material Study Key Aspects of a Map Explore a Map of Ohio’s Topography Create our own Maps of Ohio’s Topography with Candy Assessment

3. Geology Bedrock Map Symbols General Political Information: –roads, towns, buildings, counties, borders Topography: –Contour lines that connect areas of equal elevation Water: –Lakes, rivers, and oceans are shown in blue. Rock Formations: –Each rock formation has a different color. –Contacts between different types of rocks are shown as thin black lines, except when rock formations are separated by a fault, which is shown as a thick black line. Other Requirements: –Title, Key, Scale, Cardinal Direction

4. Ice-Scoured Bedrock Landscape “I” Bedrock surface is buried under glacial sediments several hundred feet thick Dissected bedrock surface – result of erosion before, during, and after glaciation Smooth buried-bedrock surface is result of scouring by glacial ice moving westward out of the Lake Erie basin

5. Water-Eroded Bedrock Landscape “W” Large volumes of ice flowed through this area large rivers and creeks that flow through wide valleys

6. Grand River Lobe “G” distinctly scoured bedrock surface smooth north-south patterns of ice flow over the valleys

7. Unglaciated Is the southeastern part of Ohio Is devoid of ice-deposited sediment (glacial till) Many river valleys carried away melt water from the ice front and to the Ohio river this resulted in clay and silt deposits at the bottom of lakes when ice blocked the flow of rivers

8. Contained the Teay’s river system before and during glaciation It dominated drainage patterns in Western and Southern Ohio Main flow direction was North Water flow was disrupted by glaciers moving southward and blocking outlets Drainage ways were filled with sediment by advancing and retreating ice Main Teays Valley

9. Create Your CANDY LAND Be sure to include: –Key based on the topography map shown Explain varying colors and heights –Title –Cardinal directions –Label each area & acronym Ice-Scourged Bedrock Water-Eroded Bedrock Grand River Lobe Unglaciated Main Teays Valley

10. Assessment