1. Types of Weathering
© Copyright   M. J. Krech. All rights reserved.

2. Mechanical Weathering

3. Frost Action or Ice Wedging

5. Abrasion

6. Wind Abrasion

7. Water Abrasion

8. Gravity

10. Organic Activity: Root Pry

13. Wetting and Drying

15. Joint Sheeting

17. Chemical Weathering

18. Hydrolysis

19. Feldspar +Water = Clay
Feldspar
A Clay Cliff

20. Plant Acids

22. Sulfuric Acid

23. Photo taken 100 years ago
Photo taken recently

24. Both of these are Civil War headstones.
Why has one weathered more?
1865
1862

25. Oxidation

28. Carbonation

31. Karst Topography

32. The End
© Copyright   M. J. Krech. All rights reserved.