UOl I l\i'A7 



THE SUBMERGED VALLEYS OF THE COAST 



OF CALIFORNIA, U. S. A., AND OF 



LOWER CALIFORNIA, MEXICO. 



BY GEORGE DAVIDSON, A. M., Ph. D., Sc. D., 



Member of the National Academy of Sciences, &^c. 



CONTENTS. 

 „ Page. 



Plates IV-XII. 



I. Extent and Direction of the Coast North of Latitude 



32° 32' 74 



1. San Diego to Santa Cruz 74 



2. Santa Cruz to Cape Mendocino 75 



3. Cape Mendocino to the Columbia River 76 



4. Columbia River to the Strait of Fuca 77 



II. The One Hundred-Fathom Plateau 77 



III. Some Deep-Sea Soundings 79 



IV. The Submerged Valleys of the California Coast 80 



1. The Soled ad or La Jolla Valley 81 



2. The Carlsbad Submerged Valley 82 



3. The Newport Submerged Valley 83 



4. Santa Monica Bay 83 



5. The Redondo Submerged Valley 84 



6. The Santa Monica Submerged Valley 85 



7. The Point Dume Submerged Valley 85 



8. The Point Mugu Submerged Valley 86 



9. The Hueneme Submerged Valley 87 



10. The Santa Barbara Channel 88 



11. The S.\nta Catalin.a. Submerged Valley 89 



12. The Santa Cruz Island Submerged Valley 89 



13. Northward of Cape Conception .' 90 



14. The Sierra Santa Lucia 90 



15. The Carmel Submerged Valley 91 



16. The Monterey Plateau and Submerged Valley 92 



Transpacific Cable 93 



17. The Coast North of Monterey Bay 93 



18. The King Peak Submerged Valley 94 



19. The Spanish Flat Submerged Valley 95 



20. The Punta Gorda or Mattole Submerged Valley... 95 



21. The Cape Mendocino Submerged Valley 97 



Practical Bearings of these Northern Submerged 



Valleys 98 



V. Lower California, Mexico 99 



I. General Features of the Peninsula 99 



( 73 ] June 25, 1897. 



