2. Continental Glaciers (Ice Sheets) and Illinois Glaciation

3. Phanerozoic – EON Cenozoic – ERA Quaternary – PERIOD Pleistocene - EPOCH (1.8 mya - 10,000 years ago)

5. 2. Ice sheets (Continental glacier) Large scale – cover 10% of Earth’s land Greenland – 1.7 million km 2 Antartica – 13.9 million km 2 Glacier Types

6. Continental Glaciers

9. Glaciation in Illinois 1.Wisconsinan 75,000 – 10,000 ya 2.Illinoian 300,000 – 125,000 ya 3.Kansan 700,000 – 500,000 ya 4.Nebraskan 1,800,000 – 900,000 ya

10. Glaciation in Illinois 1.Wisconsinan 75,000 – 10,000 ya 2.Illinoian 300,000 – 125,000 ya 3.Pre-Illinoian

12. End moraines and till plains

17. Glacial Deposits Drift – Sediment deposited on land or in water as a result of glaciation. Till – Unsorted debris transported by glaciers and deposited on land. Diamicton – Does not infer digenesis

18. Moraine – a sediment pile composed of till deposited by a glacier Glacial Deposits

20. Till – Mixture of unsorted mud, sand, pebbles, and larger rocks deposited by glaciers

22. Ice Sheet Landforms Outwash – sand and gravels deposited by glacial meltwater

23. Pro-Glacial Lake Sediments

24. Ice Sheet Landforms – Kettle Lakes

25. Ice Sheet Landforms - Eskers

26. Ice Sheet Landforms - Drumlins

27. Ice Sheet Landforms Drumlins

29. Glaciation relocated rivers

30. Pre-Illinoian Drainage

31. Illinoian Glaciation & Drainage

32. Wisconsinan Glaciation & Drainage

35. Lobes And Moranic systems

36. Chief Waupansee

37. Was this change unique in time? Why did the climate change? Points to Ponder

39. 1. changing continental positions 2. uplift of continental blocks 3. reduction of CO2 in the atmosphere 4. changes in the Earth's orbit Why did the climate change?

40. Plate Tectonics is one of the keys to paleozoic glaciation 250 million years ago

41. Changes in Earth’s Orbit The Milankovitch Theory

42. Eccentricity of the orbit

43. Changes in Earth’s tilt The Milankovitch Theory

44. Earth-Sun Relations

45. Precession of the Equinoxes The Milankovitch Theory

47. Cycles of Global Warming

48. Snowball Earth