LIST OF FIGURES 



1. Index map showing areas sounded and sampled off 



southern California 3 



2. Plot of difference between wire depth and 



sonic depth corrected for sound velocity 5 



3. Hueneme Canyon 9 



4. Mugu Canyon 11 



5. Dume Canyon 13 



6. Santa Monica Canyon 15 



7. Redondo Canyon 17 



8. San Pedro Sea Valley 19 



9. Newport Canyon 21 



10. La Jolla Canyon 23 



11. Coronado Canyon 25 



12. Santa Cruz Canyon 27 



13. Santa Catalina Canyon 29 



14. San Clemente "Rift Valley" 31 



15. Tanner Canyon 33 



16. Relationships of wall steepness and height to slope of canyon axes . . 34 



17. Profiles of submarine canyons compared with lithology where known . 35 



18. Positions and depths of water samples in six canyons at stations shown by 



open circles in Figures 3 through 15 51 



19. Characteristics of water in Redondo Canyon 52 



20. Relationship of median diameters of samples from submarine canyons to 



frequency of occurrence, sorting coefficient, and contents of calcium 



carbonate and Kjeldahl nitrogen 55 



21. Results of separate determinations for organic carbon on sub-samples, 



based on (1) analysis for carbon in residue from carbonate analysis, 



and (2) on analysis for total carbon minus carbonate carbon . . 58 



22. Comparison of carbon and nitrogen analyses on samples from submarine 



canj'ons 59 



