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table Google Earth assignment
due next Monday, Mar. 8,
11:59 pm Exam 2 Wed., Mar 10 What are Sedimentary
Rocks? What are Sediments?
Lithification Sedimentary Rock Classes
Sedimentary Reef limestone Fossiliferous Limestone
Fossiliferous Little things can make big deposits Sedimentary Rocks Organic Sedimentary Rocks Evaporite H20 Evaporates Coffee and other material
that was in solution is left
behind and precipitates a
solid Lake Drying Up Sedimentary Environments
• Sedimentary rocks record the environment
where they are formed Fine stuff (dust, silt) will be carried away by current!!! Clastic Sed. Rx: Grain size
Note relationship of distance and velocity! Coarse = fast/high energy
Fine= slow/low energy Pebbles Grain Size
Grain Sand Silt Boulders to Pebbles
Sorting Well-sorted Poorly-sorted Sphericity and Roundness
and Photos from Skinner et al, 2004 5th edition clast
matrix Mineralogy= intensity of weathering Remember
Series? Sedimentary indicators
Sedimentary Fossil preservation
Low Energy High Energy Several stages in life-cycle of sedimentary rocks ...
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