1. Geologic Considerations in Conservation Planning Southern California December 3-5, 2002 JGrim

2. Discussion Topics 1.California Geology 101 2.Southern California Geology (Lunch) 3.Geologic Considerations in Conservation Planning 4.Geologic Hazards 5.Pertinent NRCS Policies & Procedures 6.Available Resources

3. California Geology 101 P Geologic Time Scale P Rocks P Structure P Plate Tectonics P Process through Time

5. THE ROCK CYCLE

6. Rock Types P Igneous P Sedimentary P Metamorphic

7. Igneous Rocks Intrusive Igneous e.g Granite

8. Granite Granite Mountains, San Bernardino Co.

9. Igneous Rocks P Extrusive/Volcanic (e.g. Basalt)

10. Pillow Basalt P Conejo Volcanics on Kanan Rd, Santa Monica Mtns.

11. Cindercones P Red Hill, just north of Little Lake near 395, Inyo Co.

12. Volcaniclastic Rocks Ricardo Group, Red Rock Canyon, Kern Co.

13. Sedimentary Rocks P Sandstone

14. Sandstone & Shale Sespe Formation near Casitas Pass, Ventura Co.

15. Sedimentary Rocks PConglomerate Eocene Llagas Fm, Rambla Pacifico, Santa Monica Mtns.

16. Sedimentary Rocks P Breccia Blackhawk Slide Breccia derived from Furnace Marble (Rd. 247, San Bernardino Co.)

17. Metamorphic Rocks Slate (top) vs. Shale

18. Metamorphic Rocks Schist

19. Metamorphic Rocks Gneiss (and Skittles)

20. Serpentenite North Baker Beach, Presidio

21. Geologic Structure P Folds P Joints & Fractures P Faults

22. Geologic Structure results when rocks and sediments are subjected to: P Tension P Compression P Shear PUplift

23. Folds

24. Ventura Anticline San Miguelito Anticline in Pico Formation beds near Ventura

25. Oil Accumulations in Anticlinal Crests

26. Natural Oil Seeps Ojai Road

27. Barstow Syncline Folded Miocene shales and sandstones in Rainbow Basin (north of Barstow)

28. Santa Ana Canyon east of Yorba Linda

29. Joints & Fractures

30. P Campo Reservation, San Diego Co.

31. Folding & Faulting P Anaverde Formation in San Andreas Fault Zone, Highway 14 near Palmdale

32. Brittle vs. Ductile Failure

33. Blind Thrust Faults

34. Northridge Earthquake, Jan. 1994

35. Reverse & Thrust Faults

36. Hollywood and Vine

37. Normal Faults

38. 1872 Owens Valley Earthquake

39. Strike-Slip Faults Left-Lateral Right-Lateral

40. Highway 247 1952 Kern Co. Quake 1992 Lander Earthquake Hwy 58 west of Hwy 223

41. California Geology P Telling the story with Plate Tectonics

42. California Geology

43. Plate Boundaries

44. Convergent Boundaries- magmatic intrusions and volcanism

45. Convergent Boundaries- Magmatic intrusions and volcanism

46. Convergent Boundaries- Magmatic intrusions and volcanism

47. California Geology

48. PRECAMBRIAN (>570 my bp)

49. California Geology PRE-CENOZOIC (<570 my bp) Metamorphics

50. California Geology PALEOZOIC (570-245 my bp) Antler Orogeny (approx. 350 my bp)

51. California Geology PALEOZOIC (570-245 my bp) Sedimentary Volcanics Metamorphics

52. California Geology EARLY MESOZOIC (245-150 my bp) Sierran Trench

53. California Geology EARLY MESOZOIC (245-150 my bp) Sedimentary Volcanics Metamorphics

54. California Geology MESOZOIC (245-65 my bp) Sedimentary Volcanics Metamorphics Granitics

55. California Geology MID-LATE MESOZOIC (140 my bp) Franciscan Trench

56. California Geology LATE MESOZOIC (140-65 my bp) Great Valley Sed.

57. California Geology LATE MESOZOIC (140-65 my bp) Great Valley Sed. Ultramafics (Serpentenite)

58. California Geology LATE MESOZOIC (140-65 my bp) Great Valley Sed. Ultramafics (Serpentenite) Franciscan

59. The San Andreas “Zipper” 23my 14.5my 7.5my 3my California Geology MID-LATE TERTIARY (30-2 my bp)

60. California Geology CENOZOIC [ (40) 17-my bp-Pres.] Volcanics

61. California Geology CENOZOIC (24 - 2 my bp) Marine Sedimentary Sierra Nevada Uplift (3-5 my bp)

62. California Geology LATE CENOZOIC - RECENT Nonmarine Sedimentary

63. The San Andreas “Zipper”

72. Geology of Southern California Complexity is thy middle name