Note: Intro -- Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin -- Preface -- Acknowledgements -- Contents -- Contributors -- Bending-Related Topographic Structures of the Subducting Plate in the Northwestern Pacific Ocean -- 1 Introduction -- 2 Data and Methods -- 2.1 Bathymetric Data -- 2.2 Geomagnetic Data -- 3 Results -- 3.1 Overview of the Bathymetric Features -- 3.2 Topographic Expression of the Trenches -- 3.3 Bending-Related Structures of the Oceanward Trench Slopes -- 3.3.1 Kuril Trench -- 3.3.2 Japan Trench -- 3.3.3 Izu-Ogasawara Trench -- 3.4 Magnetic Anomalies -- 4 Discussion -- 4.1 Strike of Bending-Related Topographic Structures -- 4.2 Topographic Expression of Bending-Related Structures -- 5 Conclusions -- References -- Erosional Subduction Zonein the Northern Japan Trench: Review of Submersible Dive Reports -- 1 Introduction -- 2 Oceanward Slope Topography and Geology off Miyako -- 3 Landward Slope Topography and Geology off Miyako -- 4 Lineaments of the Oceanward and Landward Slopes off Miyako -- 5 Conclusions -- References -- Boso TTT-Type Triple Junction: Formation of Miocene to Quaternary Accretionary Prisms and Present-Day Gravitational Collapse -- 1 Introduction -- 2 Review of Sedimentation, Topography, and Plate Configuration -- 2.1 Sedimentation -- 2.2 Topographic Development of the Area from the Eastern Margin of the Sagami Trough to the Boso Triple Junction -- 2.3 Katsuura Basin and Mogi Submarine Fan in the Bando Deepsea Basin -- 2.4 Review of 3D Structure Based on Multichannel Seismic Profiles and Multibeam Echosounder Data -- 2.5 Relationship Between the Tectonic and Age Data -- 3 Diatom Analysis -- 3.1 Materials, Method, and Results -- 3.2 Diatom Biostratigraphy -- 3.2.1 Pleistocene to Holocene Samples -- 3.2.2 Middle Miocene Sample -- 3.3 Summary of Age of Samples. , 3.4 Correlation to the Marine Rocks of the Izu Forearc -- 4 Tectonic Synthesis: Summary and Conclusion -- References -- Rifting Structure of Central Izu-Ogasawara (Bonin) Arc Crust: Results of Seismic Crustal Imaging -- 1 Introduction -- 2 Data Acquisition -- 3 Data and Modeling Procedure -- 4 Description of Velocity Images -- 4.1 Line IBr9 -- 4.2 Line IBr10 -- 5 Discussion -- 5.1 Structural Commonalities and Differences -- 5.2 Origin of the Arc Crust -- 5.3 History of the Rifted Crust -- 5.4 Reason for the Thin Crust in the Central Izu-Ogasawara Arc -- 6 Conclusion -- References -- Seafloor Geology of the Basement Serpentinite Body in the Ohmachi Seamount (Izu-Bonin Arc) as Exhumed Parts of a Subduction Zone Within the Philippine Sea -- 1 Introduction -- 2 Geologic Setting and Bathymetry -- 3 Lithology -- 3.1 Serpentinites -- 3.1.1 Massive Serpentinite -- 3.1.2 Schistose Serpentinite -- 3.2 Amphibole Schist -- 3.3 Paleogene Volcanic Rocks -- 3.4 Miocene Turbidite -- 3.5 Soft Mud Beds -- 4 Dive and Dredge Results -- 4.1 Dive 6K#341 -- 4.2 Dive 6K#570 -- 4.3 Dive 6K#571 -- 4.4 Dive 6K#575 -- 4.5 Dive 6K#608 -- 4.6 Dive 6K#609 -- 4.7 Dive 6K#610 -- 4.8 Dive 6K#1064 -- 4.9 Dive 6K#1065 -- 4.10 Dive 6K#1066 -- 4.11 Dive 6K#1067 -- 4.12 Dive 6K#1068 -- 4.13 Dredges -- 5 Interpretation of Geologic Structures -- 5.1 Serpentinite Body -- 5.2 Overlying Formations -- 6 Structural Characteristics of Sub-crustal Origins -- 7 Exhumation to the Surface -- 8 Appendix: In Situ Measurement of Geological Surface Orientation by Submersible -- References -- Petrology and Mineralogy of Mantle Peridotites from the Southern Marianas -- 1 Introduction -- 2 Description of Dredge Sites and Geological Background -- 3 Petrographic Descriptions of the Peridotites -- 4 Chemical Composition of the Minerals -- 5 Discussion -- 5.1 Origin of the Plagioclase-Bearing Peridotite. , 5.2 Degree of Partial Melting -- 5.3 Degree of Melt Impregnation -- 6 Conclusions -- References -- Tectonics of Unusual Crustal Accretionin the Parece Vela Basin -- 1 Introduction -- 2 Oceanic Core Complexes -- 3 Crustal Accretion in the Parece Vela Basin -- 3.1 Morphology and Spreading of the Parece Vela Basin -- 3.2 Oceanic Core Complexes in the Parece Vela Basin -- 4 Mechanisms That Account for the Unusual Characteristics of the Parece Vela Basin -- 4.1 Presence of a Cold and/or Refractory Mantle Domain -- 4.2 Declining Spreading Rate During a Later Phase of the Second-Stage Spreading of the Parece Vela Basin -- 4.3 Transform Sandwich Effect -- 5 Relationships Between Mantle Thermal Anomaly, Fracture Zone Geometry, Occurrence of Oceanic Core Complexes and Spreading Rate -- 5.1 St. Paul FZ in the Mid-Atlantic Ridge -- 5.2 Australian-Antarctic Discordance in the Southeast Indian Ridge -- 5.3 Valdivia FZ in the Chile Ridge -- 6 Tectono-Magmatic Characteristics of Intra-Transform Spreading Centers in Fast-Spreading Ridges -- 7 Summary -- References -- Structural Profile and Development of the Accretionary Complex in the Nankai Trough, Southwest Japan: Results of Submersible Studies -- 1 Introduction -- 2 Framework of the Accretionary Complex in the Nankai Trough and the Shionomisaki Submarine Canyon -- 3 Methodology -- 4 Structural Profile of the Nankai Accretionary Complex -- 4.1 Frontal Thrust Zone (Dive 6K#938) -- 4.2 Imbricate Thrust Zone (Dive 6K#522) -- 4.3 The Megasplay Fault Zone (6K#579, 6K#889~891): Field Observations -- 4.4 The Megasplay Fault Zone: Material Properties, Depositional Ages and Cements -- 5 Discussion -- 5.1 Faults in the Accretionary Complex of the Nankai Trough -- 5.2 Tectonic Deformation vs. Creeping -- 5.3 Development of the Accretionary Complex -- 5.4 Roles of Carbonate Cementation in Concentration of Fluid and Strain. , 6 Summary -- References -- Submarine Outcrop Evidence for Transpressional Deformation Within the Nankai Accretionary Prism, Tenryu Canyon, Japan -- 1 Introduction -- 2 Tenryu Canyon -- 3 Outcrop Geology of Tenryu Canyon from SHINKAI 6500 -- 4 Dive-Transect Maps -- 5 Discussion -- 6 Conclusions -- References -- Rapid Exhumation of Subducted Sediments Along an Out-of-Sequence Thrust in the Modern Eastern Nankai Accretionary Prism -- 1 Introduction -- 2 Deformed Rocks of the Tenryu Canyon -- 3 Ages of Recovered Rocks -- 4 Illite Crystallinity and Vitrinite Reflectance -- 5 Physical-Mechanical Properties of Recovered Rocks -- 6 Processes of Tectonic Burial and Rapid Exhumation in the NAP -- 6.1 Burial Conditions -- 6.2 Processes and Mechanism of Rapid Exhumation -- References -- Dark Bands in the Submarine Nankai Accretionary Prism - Comparisons with Miocene-Pliocene Onshore Examples from Boso Peninsula -- 1 Introduction -- 2 Geological Setting of the Study Area -- 3 Occurrence of Samples and Dark Bands -- 3.1 6K#893 R-3 -- 3.2 6K#1056 R6-2, 6K#1060 R2-1 and R2-2 -- 4 Internal Structure of the Dark Bands -- 4.1 DB-1 in 6K#893 R-3 -- 4.2 DB-2 in 6K#893 R-3 -- 4.3 6K #1056 R6-2 -- 4.4 6K#1060 R2-1 -- 4.5 6K#1060 R2-2 -- 5 Comparison with the Miura-Boso Accretionary Prism and Formation Processes and Mechanisms of the Dark Bands -- 5.1 Characteristics of the Dark Bands of the Miura-Boso Accretionary Prism -- 5.2 DB-1 in 6K#893 R-3 -- 5.3 DB-2 in 6K#893 R-3 -- 5.4 6K#1056 R6-2 -- 5.5 6K#1060 R2-1 -- 5.6 6K#1060 R2-2 -- 6 Summary and Conclusions -- References -- Gas Chemistry of Pore Fluids from Oomine Ridge on the Nankai Accretionary Prism -- 1 Introduction -- 2 Sampling -- 3 Analysis -- 4 Results and Discussion -- 4.1 Quality of Extracted Gas -- 4.2 Pore-Water Chemistry -- 4.3 Gas Chemistry of Reactive Components. , 4.4 Gas Chemistry of Nonreactive Components -- 5 Conclusions -- References -- Long-Term Stability of Acoustic Benchmarks Deployed on Thick Sediment for GPS/Acoustic Seafloor Positioning -- 1 Introduction -- 2 Diving Surveys -- 3 Discussions -- 4 Summary -- References -- Index.

Note: Intro -- Submarine Mass Movements and Their Consequences -- Contents -- Contributors -- Chapter 1: Submarine Mass Movements and Their Consequences -- 1.1 Introduction -- 1.2 Part I: Physical Properties of Sediments and Slope Stability Assessment -- 1.3 Part II: Seafloor Geomorphology for Trigger Mechanisms and Landslide Dynamics -- 1.4 Part III: Role of Fluid Flow in Slope Instability -- 1.5 Part IV: Mechanics of Mass-Wasting in Subduction Margins -- 1.6 Part V: Post-failure Dynamics -- 1.7 Part VI: Landslide Generated Tsunamis -- 1.8 Part VII: Witnessing and Quasi-Witnessing of Slope Failures -- 1.9 Part VIII: Architecture of Mass Transport Deposits/Complexes -- 1.10 Part IX: Relevance of Natural Climate Change in Triggering Slope Failures -- 1.11 Future Perspectives -- References -- Part I: Physical Properties of Sediments and Slope Stability Assessment -- Chapter 2: Risk Assessment for Earthquake-Induced Submarine Slides -- 2.1 Introduction -- 2.2 Stability of Submarine Slopes Under Earthquake Loading -- 2.3 Factors Influencing Soil Strength Under Seismic Loading -- 2.3.1 Rapid Loss of Shear Strength and Liquefaction Phenomenon -- 2.3.2 Special Considerations for Clay Slopes Under Earthquake Loading -- 2.3.3 Effect of High-Frequency Cyclic Loading on Static Shear Strength -- 2.3.4 Effect of Cyclic Loading on Undrained Creep -- 2.4 Risk Assessment for Submarine Slides -- 2.4.1 Probabilistic Slope Stability Assessment -- 2.4.2 Estimation of Annual Probability of Slope Failure -- 2.4.3 Interpretation of Computed Static Failure Probability in a Bayesian Framework -- 2.5 Recommended Calculation Procedure -- 2.6 Discussion and Conclusion -- References -- Chapter 3: Shallow Landslides and Their Dynamics in Coastal and Deepwater Environments, Norway -- 3.1 Introduction -- 3.2 Geological Setting -- 3.3 Data and Methods. , 3.4 Results - From Geomorphology to Soil Properties and Stability -- 3.4.1 Coastal Environment - Sørfjorden (Finneidfjord) -- 3.4.2 Intermediate Water Depths - Vesterålen Margin -- 3.4.3 Deepwater Setting - Lofoten Margin -- 3.5 Discussion and Conclusions -- References -- Chapter 4: Physical Properties and Age of Continental Slope Sediments Dredged from the Eastern Australian Continental Margin - Implications for Timing of Slope Failure -- 4.1 Introduction -- 4.2 Study Area -- 4.3 Results -- 4.3.1 Dredged Materials - Sedimentology and Geomechanical Properties -- 4.3.2 Palaeontology/Dating -- 4.3.3 Geomechanical Modeling -- 4.4 Discussion and a Hypothesis -- References -- Chapter 5: Submarine Landslides on the Upper Southeast Australian Passive Continental Margin - Preliminary Findings -- 5.1 Introduction -- 5.1.1 Study Area -- 5.2 Data and Methods -- 5.2.1 Bathymetry and Slide Geometry -- 5.2.2 Sediment Properties -- 5.3 Results and Interpretation -- 5.3.1 Sediment Properties -- 5.3.2 14 C Radiocarbon Ages -- 5.4 Modeling -- 5.5 Conclusions -- References -- Chapter 6: Development and Potential Triggering Mechanisms for a Large Holocene Landslide in the Lower St. Lawrence Estuary -- 6.1 Introduction -- 6.1.1 Objectives -- 6.2 Data and Methods -- 6.3 Morphology of the Betsiamites Slide Complex -- 6.4 Lithostratigraphy and Failure Surface -- 6.5 Movement Development -- 6.6 Triggering Mechanisms -- 6.7 Concluding Remarks and Future Work -- References -- Chapter 7: Spatially Fixed Initial Break Point and Fault-Rock Development in a Landslide Area -- 7.1 Introduction -- 7.2 Setting -- 7.3 Methods -- 7.3.1 Tilt and Groundwater Level Measurement -- 7.3.2 Core Analysis -- 7.3.3 Detailed Monitoring During Slipa -- 7.4 Results -- 7.4.1 Dilation and Slip -- 7.4.2 Core Analysis -- 7.5 Summary -- References. , Chapter 8: Pore Water Geochemistry as a Tool for Identifying and Dating Recent Mass-Transport Deposits -- 8.1 Introduction -- 8.2 Study Area -- 8.3 Material and Methods -- 8.4 Results and Discussion -- 8.4.1 Pore Water Profiles at Potential MTD Sites -- 8.4.2 Geochemical Transport/Reaction Modeling -- 8.5 Conclusions -- References -- Chapter 9: An In-Situ Free-Fall Piezocone Penetrometer for Characterizing Soft and Sensitive Clays at Finneidfjord (Northern Norway) -- 9.1 Introduction -- 9.2 Setting -- 9.3 Material and Methods -- 9.4 Results -- 9.4.1 Comparison of FF-CPTU and Pushed CPTU Tests -- 9.4.2 Laboratory Analyses -- 9.4.3 Comparison of In-Situ and Laboratory Results -- 9.5 Discussion and Conclusion -- References -- Chapter 10: Static and Cyclic Shear Strength of Cohesive and Non-cohesive Sediments -- 10.1 Introduction -- 10.2 Methods -- 10.2.1 Research Approach -- 10.2.2 Sample Description -- 10.2.3 Testing Procedure -- 10.2.4 Data Acquisition and Analysis -- 10.3 Results and Discussion -- 10.3.1 Exemplary Cyclic Test Results -- 10.3.2 Generic Study -- 10.3.3 Case Study -- 10.4 Conclusion -- References -- Chapter 11: Upstream Migration of Knickpoints: Geotechnical Considerations -- 11.1 Introduction -- 11.2 Experimental Setup and Method -- 11.3 Results -- 11.4 Discussion -- 11.5 Conclusion -- References -- Part II: Seafloor Geomorphology for Trigger Mechanisms and Landslide Dynamics -- Chapter 12: A Reevaluation of the Munson-Nygren-Retriever Submarine Landslide Complex, Georges Bank Lower Slope, Western North Atlantic -- 12.1 Introduction -- 12.1.1 Data -- 12.2 Results and Interpretations -- 12.2.1 Munson-Nygren Slide -- 12.2.2 Retriever Slide -- 12.2.3 Picket Slide -- 12.3 Age of Slope Failure -- References -- Chapter 13: Submarine Landslides in Arctic Sedimentation: Canada Basin -- 13.1 Introduction -- 13.1.1 Regional Geology. , 13.1.2 Methods -- 13.2 Results -- 13.2.1 Canadian Archipelago Slope and Rise -- 13.2.2 MacKenzie-Beaufort Slope and Rise -- 13.3 Discussion and Conclusions -- References -- Chapter 14: Extensive Erosion of the Deep Seafloor - Implications for the Behavior of Flows Resulting from Continental Slope Instability -- 14.1 Introduction -- 14.2 Areas of Erosion by Gravity Currents -- 14.3 Areas of Deposition from Gravity Currents -- 14.4 Discussion -- 14.5 Conclusions -- References -- Chapter 15: Investigations of Slides at the Upper Continental Slope Off Vesterålen, North Norway -- 15.1 Introduction -- 15.2 Database -- 15.3 Landforms and Geological Setting -- 15.4 Results -- 15.4.1 Morphological Features -- 15.4.2 Seismic Stratigraphy, Slides and Failure Planes -- 15.4.3 X-Ray Images, Core Logging and Soil Mechanical Testing -- 15.5 Discussion -- 15.6 Summary and Conclusions -- References -- Chapter 16: Dakar Slide Offshore Senegal, NW-Africa: Interaction of Stacked Giant Mass Wasting Events and Canyon Evolution -- 16.1 Introduction -- 16.1.1 Structural Setting -- 16.1.2 Data -- 16.2 Results -- 16.2.1 Seismic Units and Stratigraphy -- 16.2.2 Dakar Slide -- 16.2.3 Older MTDs -- 16.2.4 Dakar Canyon -- 16.2.5 Sedimentary Ridges -- 16.3 Discussion -- 16.3.1 Dakar Slide: Age and Type of Failure -- 16.3.2 History of Mass Wasting Off Southern Senegal -- 16.3.3 Interaction Between Slope Failures and Canyons -- 16.4 Conclusion -- References -- Chapter 17: Large-Scale Mass Wasting on the Northwest African Continental Margin: Some General Implications for Mass Wasting on Passive Continental Margins -- 17.1 Introduction -- 17.2 Results and Interpretations -- 17.2.1 Sahara Slide -- 17.2.2 Cap Blanc Slide -- 17.2.3 Mauritania Slide Complex -- 17.2.4 Dakar Slide -- 17.3 Discussion -- 17.3.1 Mass Wasting Off Northwest Africa: Where and Why?. , 17.3.2 Timing of Landslides and Geohazard Potential -- 17.4 Conclusions -- References -- Chapter 18: Deep-Seated Bedrock Landslides and Submarine Canyon Evolution in an Active Tectonic Margin: Cook Strait, New Zealand -- 18.1 Introduction -- 18.2 Data Sets and Methodology -- 18.3 Results -- 18.3.1 Submarine Canyon Morphology -- 18.3.2 Landslides -- 18.3.2.1 Morphological Characteristics -- 18.3.2.2 Distribution -- 18.4 Discussion and Conclusions -- 18.4.1 Nature of Landslides -- 18.4.2 Causes of Landslides -- 18.4.3 Spatial Distribution of Landslides -- 18.4.4 Role of Landslides in Canyon Evolution -- References -- Chapter 19: Polyphase Emplacement of a 30 km 3 Blocky Debris Avalanche and Its Role in Slope-Gully Development -- 19.1 Introduction -- 19.2 Tectonic and Sedimentary Setting -- 19.3 Data and Methods -- 19.4 Stratigraphic and Morphological Analyses -- 19.5 PDA Emplacement and Upper Slope Gully Development -- 19.6 Summary -- References -- Chapter 20: Slope Failure and Canyon Development Along the Northern South China Sea Margin -- 20.1 Introduction -- 20.2 Regional Setting -- 20.3 Data and Methods -- 20.4 Results -- 20.4.1 Canyon Morphology -- 20.4.2 Slope Failure Features -- 20.5 Discussion -- 20.5.1 Canyon Origin -- 20.5.2 Implications for Geohazard Risk -- References -- Chapter 21: Distinguishing Sediment Bedforms from Sediment Deformation in Prodeltas of the Mediterranean Sea -- 21.1 Introduction -- 21.1.1 Regional Setting -- 21.1.2 Methods -- 21.2 Results -- 21.2.1 Morphology of Undulated Prodeltas -- 21.2.2 Seismostratigraphy of Prodelta Undulations -- 21.2.3 Physical Properties of Prodelta Undulations -- 21.2.4 Sediment Transport Processes on Undulated Prodeltas -- 21.3 Discussion and Conclusion -- References -- Chapter 22: Hydroacoustic Analysis of Mass Wasting Deposits in Lake Ohrid (FYR Macedonia/Albania) -- 22.1 Introduction. , 22.2 Seismic Stratigraphy and Slide Bodies.

Note: Includes bibliographical references and index