CONTENTS

PAGE
Abstract[1]
Part 1. Preparation of the Physiographic Diagram[3]
Part 2. Physiographic Provinces[11]
Introduction[11]
Nomenclature and classification of deep-sea relief[11]
Units of depth and slope[12]
Continent and ocean[16]
Continental margin[17]
Definition and general categories[17]
General categories[17]
Category I provinces[17]
Category II provinces[18]
Category III provinces[19]
Regional description of continental margin[21]
Benches and terraces of the continental margin[41]
Geology and geophysics of continental-margin physiographic provinces[51]
Seismicity of the continental-margin provinces[51]
Magnetic anomalies and continental-margin physiographic provinces[51]
Crustal structures and continental-margin provinces[52]
Sediment distribution and physiographic provinces of the continental margin[53]
Past, present, and future of the continental-margin provinces[53]
Ocean-basin floor[55]
General description[55]
Abyssal plains[55]
General discussion[55]
Regional description[57]
Abyssal hills[61]
Definition and distribution[61]
Regional description[63]
Origin of abyssal-hills topography[65]
Other major features of the abyssal floor[66]
Abyssal gaps[66]
Mid-ocean canyons[66]
Regional description[66]
Origin of abyssal-floor topography[74]
Oceanic rises[74]
Definition and distribution[74]
Regional description[74]
Seamounts of the ocean-basin floor[78]
Seismicity of the ocean-basin floor[80]
Ocean-basin floor provinces and crustal structure[80]
Mid-oceanic ridges[83]
Definition[83]
Mid-Atlantic Ridge[83]
Provinces of the Mid-Atlantic Ridge[84]
General statement[84]
Crest provinces[84]
Flank provinces[9]5
Azores Plateau[97]
Azores-Gibraltar Ridge[98]
Atlantis-Plato-Cruiser-Great Meteor Seamount Chain[98]
Geology and geophysics of Mid-Atlantic Ridge physiographic provinces[98]
Seismicity of the Mid-Atlantic Ridge[98]
Sediments and physiographic provinces of the Mid-Atlantic Ridge[99]
Rocks of the Mid-Atlantic Ridge[99]
Crustal structure of the Mid-Atlantic Ridge provinces[100]
Origin of the Mid-Atlantic Ridge[103]
Sub-bottom reflections recorded on PDR records and physiographic provinces[105]
Summary of province characteristics[107]
Bibliography[109]
Index[115]