1. Two Different Types of Glacial Landforms: 1) Erosional; 2) Depositional

2. Types of Glacial Deposits: 1)Till – Left directly by the ice. Unsorted and unstratified. 1)Stratified Drift – Left by glacial meltwater. Usually sorted and layered.

3. TILL

4. STRATIFIED DRIFT

5. What sport does this topography remind you of?

6. Golf – invented in the glaciated landscape of Scotland!

7. 1)Deposits Made of Till: Moraines

10. 1)Deposits Made of Till: Drumlins

12. Deposits Left By Meltwater

13. OUTWASH

14. Kettles

15. ESKERS

16. Glaciers and Climate Change Winter Landscape by Peter Brueghel, 1601 The Little Ice Age in Holland

18. The Pleistocene Epoch: 1.8 million to 10,000 years ago A Much Different World

21. Earth’s Climate Cycles

24. 1)Glaciers are sensitive to climate changes and respond by advancing and retreating. 2)Glaciers provide information about past climate. a) Glacial deposits are evidence of a colder, past climate (Till in Dayton is an excellent example). b) Glacial ice contains air bubbles filled with the ancient atmosphere. We can study past climate by analyzing the composition of the ice bubble gases. 3) Glaciers influence climate change! Albedo is the reflectivity of the Earth’s surface. More glacial ice increases albedo and reflects solar energy back into space. So, more ice reinforces cold climate.

25. The Geological History of Dayton, Ohio 450 Million year old limestones 40 thousand year old glacial till Unconformity

26. Fig. 11.6b The Geological History of Dayton, Ohio Environments?