Tectonic Interpretation of Seismic Refraction Profiles

1. Introduction to Geophysics Ali Oncel [email_address] Department of Earth Sciences KFUPM Tectonic Interpretation of Seismic Refraction Profiles Introduction to Geophysics-KFUPM

5. Solutions of Quiz 2: Question 2 Introduction to Geophysics-KFUPM In order for the refracted ray to be the first arrival, the line must be longer than the critical distance. i c

6. Parks and Plates ©2005 Robert J. Lillie Plate Boundaries Introduction to Geophysics-KFUPM

7. Introduction to Geophysics-KFUPM A. Jon Kimerling Parks and Plates ©2005 Robert J. Lillie Raised Relief Map of North America and Adjacent Oceans

8. Introduction to Geophysics-KFUPM Due to shallow hot mantle Due to cold lithospheric plate Map of P-wave Velocity (km/s)

9. Parks and Plates ©2005 Robert J. Lillie Active Continental Rifts Advanced Rifting (Lower Elevations) Early Rifting (Higher Elevations) Introduction to Geophysics-KFUPM National Park Lands

10. Introduction to Geophysics-KFUPM Map of P-wave Velocity (km/s)

11. Introduction to Geophysics-KFUPM Continental rifting Thin crust. Map of Crustal Thickness (km)

12. Parks and Plates ©2005 Robert J. Lillie Crustal Thinning at Continental Rifts Introduction to Geophysics-KFUPM

13. Crustal Thinning at Continental Rifts Parks and Plates ©2005 Robert J. Lillie Grand Teton National Park, Wyoming Great Basin National Park, Nevada Introduction to Geophysics-KFUPM

14. Crustal Thinning at Continental Rifts Parks and Plates ©2005 Robert J. Lillie Introduction to Geophysics-KFUPM

15. Parks and Plates ©2005 Robert J. Lillie Sagauro National Park, Arizona Death Valley National Park, California Crustal Thinning at Continental Rifts Introduction to Geophysics-KFUPM

16. Parks and Plates ©2005 Robert J. Lillie Crustal Thinning at Continental Rifts Introduction to Geophysics-KFUPM

17. Parks and Plates ©2005 Robert J. Lillie Salton Sea Gulf of California Crustal Thinning at Continental Rifts Introduction to Geophysics-KFUPM

18. Continental Rifting eventually open an Ocean Basin Parks and Plates ©2005 Robert J. Lillie Introduction to Geophysics-KFUPM

19. Parks and Plates ©2005 Robert J. Lillie Continental Rifting eventually open an Ocean Basin Introduction to Geophysics-KFUPM

20. Parks and Plates ©2005 Robert J. Lillie Continental Rifting eventually open an Ocean Basin Introduction to Geophysics-KFUPM

21. Parks and Plates ©2005 Robert J. Lillie East Pacific Rise Mid-Atlantic Ridge A Continental Rift can be Viewed as the On-land Continuation of a Mid-Ocean Ridge Introduction to Geophysics-KFUPM

22. Parks and Plates ©2005 Robert J. Lillie Basin and Range Province East Pacific Rise Mid-Atlantic Ridge Gulf of California A Continental Rift can be Viewed as the On-land Continuation of a Mid-Ocean Ridge Introduction to Geophysics-KFUPM

23. Parks and Plates ©2005 Robert J. Lillie Active Continental Rifts Death Valley Salton Sea Introduction to Geophysics-KFUPM National Park Lands

24. Moho DEPTH relate to tectonic history? Introduction to Geophysics-KFUPM Fig.4.17 of Lillie

25. Introduction to Geophysics-KFUPM Fig 4.18 of Lillie

26. Formation of Oceanic Crust Introduction to Geophysics-KFUPM Parks and Plates ©2005 Robert J. Lillie

27. DIVERGENT PLATE BOUNDARY DEVELOPMENT Introduction to Geophysics-KFUPM Parks and Plates ©2005 Robert J. Lillie

28. Ocean/Continent Subduction Zone Introduction to Geophysics-KFUPM Parks and Plates ©2005 Robert J. Lillie

29. Introduction to Geophysics-KFUPM Fig 4.19 of Lillie

30. Continental Rifting eventually open an Ocean Basin Parks and Plates ©2005 Robert J. Lillie Introduction to Geophysics-KFUPM

31. CONVERGENT PLATE BOUNDARY Subduction Zone Introduction to Geophysics-KFUPM Parks and Plates ©2005 Robert J. Lillie Accretionary Wedge Volcanic Arc

32. CONVERGENT PLATE BOUNDARY Continental Collision Introduction to Geophysics-KFUPM Parks and Plates ©2005 Robert J. Lillie

33. Problems 4-3, 4-5, 4-6, 4-7 Homework due to Next Wednesday Introduction to Geophysics-KFUPM