Lecture 4 � Marine Sediments

Lecture 4 � Marine Sediments - Lecture 4 Marine...

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Lecture 4 – Marine Sediments 17/01/2008 14:49:00 Marine Sediments Slide 2 Slide 3 Slide 4 o Biogenous – formed by animals Slide 5 Slide 6 o Underwater avalanches – Turbidity currents Slide 6 (cont.)  Slide 7 o big mountains bring more sediments to oceans Slide 8 o 80% of sediments comes from continents Slide 9 o most of sediment from winds comes from deserts Slide 10 Slide 11 Slide 12 o volcanic sediments can tell about tectonic activity by volcanoes Slide 13 Slide 14 Slide 15 o be able to pick out which organisms are made of calcium carbonate or  silica Slide 16 o 1 micrometer = 10^-6 mm
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Slide 17 Slide 18 Slide 19 Slide 20 Slide 21 o growth rate is 5mm per millions of years
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