5-OcFA11-Sed_Abrev_WEB

5-OcFA11-Sed_Abrev_WEB - Marine Sediments Particles that...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Marine Sediments Particles that accumulate on the seafloor Accumulations of organic and inorganic particles Generally covers all of ocean floor Sedimentology- The study of sediment Where do the particles come from? How/Where do they end up on the seafloor? What can they tell us? Collection Methods Suspended Sediments: From the water column, floating or sinking: pump and filter sediment traps Surface Sediments: sediment close to the sediment-water interface grab sampler box corer From layers of sediment far below the surface: Sediment Core gravity core piston core deep sea drilling Why study marine sediment? - Reflects what’s going on above - Contains a record of the past ocean environment - Some of economic significance - Much marine life lives there
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Marine Sediment Classification BY LOCATION Neritic Sediment – coastal including shelf (mostly lithogenous) Pelagic – from slope to deep ocean floor (majority but not all biogenic) BY DELIVERY AGENT Riverine – by rivers •Aeolian – by wind –Can use variations in wind blown dust to monitor aridity, wind direction –-Types; Fire ash, Glacial – dropped by glaciers or iceburgs (ice rafted) BY SOURCE Terrigenous - from land = Lithogenous - from rocks (found everywhere but especially close to continents) Biogenous - from organisms (found everywhere but especially under high productivity areas) •Hydrogenous = Authigenic - from seawater (precipitation)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/04/2011 for the course OCE 1001 taught by Professor Smith during the Fall '08 term at University of Florida.

Page1 / 6

5-OcFA11-Sed_Abrev_WEB - Marine Sediments Particles that...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online