HMS Challenger Kilo Moana Polar views of Earth World map showing land water distribution Oceanography Thompson Research Vessel Diagram of land water by latitude Sonar process single beam Sonar process multibeam and sidescan 1 Passive Continental Margin Satellite Altimeter Oceanic Ridge Atlantic Atlantic Ocean Floor Atlantic oceanic ridge Continental shelf Continental slope Continental rise Oceanic Ridge Indian Oceanic Ridge Pacific Pacific and Indian Ocean Floor Sea floor landforms California H ES106 PowerPoint AN12 001 mov 2 Seismic data and interpretation Sea floor sediment Collection of sea floor sediment cores Derived from land terra Terrigenous Composed of sand silt and clay Derived from organisms biota Biogenous Composed of shells and skeletons of marine animals and plants Direct precipitation from sea water hydro Hydrogenous Salts calcium carbonate metal oxides metal sulfides near sea floor hot springs Plankton Marine Sediment distribution Methane Hydrate sample Offshore oil platform Salt production Methane Hydrate burning 3 Manganese Nodules Submerged edge of continental crust Basin size vs ridge Function of amount of water in the sea And number and size of oceanic ridges http geography berkeley edu ProgramCourses CoursePagesFA2002 Geog40 Geog40 Week7 html Active Continental Margins Convergent Lithospheric Plates Active continental Margin location Oceanic plate is subducted Deep ocean trench is formed Volcanism above subducted plate Narrow continental shelf Deep sea trench catches terrigenous sediment Accretionary Wedge of caught sediment At convergent boundary of plates http serc carleton edu research education cyberinfrastructure navdat questions html Deep Ocean Trenches Active continental margins Other convergent plate locations Most are in the Pacific Ocean http serc carleton edu research education cyberinfrastructure navdat questions html Pacific and Indian Ocean Floor Passive continental Margin location 4 Passive continental Margin cross section Deep sea sediment fans Turbidity current Discovery of Turbidity Currents Sea floor landforms California Atoll formation Atoll Oceanic Plateaus Pacific and Indian Ocean Floor Figure 10 19 Oceanic Plateaus 5 Atlantic Ocean Floor Pacific Lithosphere Action Oceanic Ridge Atlantic http www soc soton ac uk CHD classroom sea carlsberg science oceanic constr html Oceanic Ridge Indian Oceanic Ridge Pacific Oceanic plate divergence http www soc soton ac uk CHD classroom sea carlsberg science constructive margins html Rift valleys on oceanic ridges 6
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