Unformatted text preview: o Seafloor spreading moves seafloor to/from sediment sources o Thickest/ oldest sediments at trenches o Sediment differences between oceans • Sediment ‘books’ o Piston cores o Sedimentation rates Problems Demonstrate why at a sedimentation rate of 0.5cm/1000yrs, sediments 1 km thick can accumulate in 200 million yrs (approx. age of oldest oceanic crust.) How thick would the sediments be in Santa Barbara Basin after 10 000 yrs when the sedimentation rate is 140cm/1000yrs?...
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- Fall '10
- Plate Tectonics, Seafloor spreading, sedimentation rate, trenches o Sediment, carbon compensation depth, Biogenic sediment distribution