1. Environmental and Exploration Geophysics II
Pitfalls in Seismic Interpretation (Part 2) & more work on your term projects
tom.h.wilson
Department of Geology and Geography
West Virginia University
Morgantown, WV
Tom Wilson, Department of Geology and Geography

2. “Static” anomalies Tucker and Yorston
Tom Wilson, Department of Geology and Geography
Tucker and Yorston

3. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

4. Flat Reflector
Apparent structural features are related to variations in thickness of near-surface low-velocity weathered layer.
Tom Wilson, Department of Geology and Geography

5. Apparent low in the time structure
Tom Wilson, Department of Geology and Geography

6. Low to southwest also observed in pre-stack depth converted seismic
Tom Wilson, Department of Geology and Geography

7. Note that the lows tend to be concentrated in the valleys
Tom Wilson, Department of Geology and Geography

8. We actually have a structural high in this area
Tom Wilson, Department of Geology and Geography

9. Note that the lows tend to be concentrated in the valleys
Tom Wilson, Department of Geology and Geography

10. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

11. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

12. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

13. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

14. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

15. Velocity usually increases with Depth
Tom Wilson, Department of Geology and Geography

16. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

17. Increased thickness of the high velocity carbonate
Tom Wilson, Department of Geology and Geography
Tucker and Yorston

18. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

19. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

20. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

21. A Velocity Pitfall?
Tom Wilson, Department of Geology and Geography

22. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

23. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

24. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

25. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

26. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

27. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

28. Erosional Truncation?
Tom Wilson, Department of Geology and Geography

29. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

30. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

31. Tucker and Yorston
Tom Wilson, Department of Geology and Geography

32. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

33. Tom Wilson, Department of Geology and Geography
Tucker and Yorston

34. Tom Wilson, Department of Geology and Geography

35. Tom Wilson, Department of Geology and Geography

36. Tom Wilson, Department of Geology and Geography

37. To Do
Read through pages 229 to 232 (static corrections) and look over problem 4.14
Look over the velocity analysis pitfalls exercise handed out today
Bring questions to class on Monday
Tom Wilson, Department of Geology and Geography