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EES:1030: October 9th, 2018Sedimentary RocksStudy Guide Questions1. Know the two major classes of sedimentary rocks.Clastic Sedimentary Rocks (form fromcompaction, cementation and lithification of sediments) Chemical Sedimentary Rocks (form fromevaporation, precipitation, biological processes)
2. What is a “clast”?weathered and eroded sediment rock material3. Know how sorting, rounding, and mineral composition change with increasing time being transported
in a clastic sedimentary system5. Given our five different clastic rock types, be able to correctly order them from smallest grain size to
largest grain size (conglomerates and breccias group together-conglomerates are rounded, breccias have6. What is a facies? Given the different environments discussed in class today, you should know what
we would expect to see in terms of grain size and sedimentary structures (e.g., graded bedding andturbidites and coarse to fine sediment = offshore slope; ripples and well sorted quartz sandstone = beach,7. Given an image of a cross bed, can recognize the direction that current was flowing.Water or air
currents cause ripples to move by erosion and redisposition8. How do evaporites form?Evaporites formfrom crystals that precipitate during evaporation ofwater (water with dissolved material in it), such as in a drying lake bed. Rock gypsum and rocksalt are twoevaporites.9. What kind of environment (temperature, freshwater vs. marine) do limestones form in and how does

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An Introduction to Physical Science
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Chapter 22 / Exercise 25
An Introduction to Physical Science
Shipman/Wilson
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