Preface and Acknowledgments
Published:January 01, 1941
Since 1933 the senior writer has been investigating the submarine geology of the sea floor off the California coast. During this time marine investigations have been carried on for a total of 3 years. The junior writer joined in the work in 1935. He has taken a very active part in the work at sea and is largely responsible for the preparation of the various maps, diagrams, and sections which accompany this report. While Emery is listed as joint author only in Part I and Part II, he has also played a very important part in the gathering of the information on which Part III and Part IV are based.
Prior to 1933 the senior writer had spent 10 years in preliminary studies of submarine geology particularly of the physiography of the continental shelves and of the submarine canyons. This was followed by various trips on vessels of the U. S. Coast and Geodetic Survey off the coasts of the United States during which there was an opportunity to study survey methods and to determine the meaning and reliability of the extensive soundings being taken along the submarine slopes.
In 1933 and 1934 the senior writer was given a sabbatical leave for carrying on field studies relative to submarine canyons. The California coast was chosen for this purpose for several reasons: (1) The bottom topography was known to be both rugged and varied in character; (2) the submarine canyons were observed to extend in close to the coast where accurate . . .