1. Faults, especially Normal January 18, 2005

2. Free Write 10 Minutes How did you feel at Natural Bridges? Successful? Fear? On task? Bored? Confused? Did you feel clear on what you were being asked to do and why we asked you to do it?

3. Know These Terms Footwall vs. Hanging wall Fault plane vs. Fault zone vs. Shear zone Offset: –Normal vs. thrust/reverse vs. strike-slip vs. oblique –Heave and throw –True vs. apparent

4. Fault vs. Fault zone vs. Shear Zone

5. Micro to Macro Faults

6. Oblique Slip

7. They gotta terminate somewhere…

8. Normal Fault Terms Scarp Offset stratigraphy on maps and in drill cores Triangular Facets Offset streams Two models - Horsts and Grabins Termination

9. Outcrop Patterns of Faults

10. Drill Core Patterns of Faults

11. Outcrops of Scarps

12. Atila Ayden at long, small offset normal fault.

13. Length Vs. Offset of faults

14. Grabin Shape Models

15. Space Problem Illustrated

16. Space Problem - Rollover Anticlines

17. Normal Fault Folds - Roll-over Anticlines and Synclines

18. Detachment Faults

19. Normal fault scarp with indurated breccia Breccia on normal fault. Quaternary Klamath Lake Ore. Note colluvial deposit against fault scarp. Smoother areas of fault show finer gouge that has not been weathered out from between breccia-size fragments.

20. Normal Scarp in the Andes (Glenn Wallace)

21. Slickenlines on hanging wall. Note brecciated textures above and below slickenlined gouge face.

22. Indurated breccia on detachment surface. Note coarse lineation parallel to pen.

23. Tectonic Environments of Normal Faulting Continental Rifting Oceanic Spreading Ridges - Mid Ocean Basins Sedimentary Basins - Compaction and gravitational collapse Pull-apart basins - TRANSTENSION

24. Continent Rifting

25. Continental regional extension - Basin and Range is unique.

26. B&R topography

27. Flatirons (triangular facets)

28. Detachment surface in Whipple Mtns. Gneissic basement complex below. Young volcanic rocks and scraps of basement above.

29. Cross Section by Eric Frost, San Diego State University

30. Ridges of the World

31. Mid- Atlantic Ridge

32. Sedimentary Basins Gravitational Shelf Collapse

33. Sample Seismic Line

36. A word about transtension

37. Pull -apart basins on transform margins