Sedimentary rocks of the esrt

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  • 1. Name: ______________________________ Period:______ Date:________________<br />Sedimentary Rocks of the ESRT<br />Directions: Use pages 6 and 7 of your ESRT and your knowledge of sedimentary rocks to answer the following questions.<br />
    • Notice the Relationship of Transported Particle Size to Water Velocity graph on page 6 of your ESRT. It shows the different types of sizes of particles are named and size ranges for each specific particle are given. For example, find silt. Silt ranges in size from .0004 cm to .006 cm (see along right of graph). Fill in the size ranges for the following sediments:
    • 2. sand: ______ cm to 0.2 cm
    • 3. pebbles: ______cm to ______ cm
    • 4. cobbles: ______ cm to ______ cm
    • 5. boulders: above ________ cm
    • 6. clay: below _______ cm
    • 7. The graph on the upper right also shows how fast (velocity) a stream must flow to carry certain size particles. For example, for a stream to carry the smallest pebbles, the stream velocity must be 50 cm/s.
    • 8. The minimum velocity a stream would need to carry the smallest cobble is:
    • 9. _____________________________
    • 10. The minimum velocity necessary to carry the smallest boulder is: _____________________________
    • 11. The chart on the top of page 7 is the scheme used to identify sedimentary rocks lithified (rock created) from specific particles. For example, clay becomes shale. Use the chart to identify the sedimentary rocks the following sediments will create.
    • 12. silt becomes _____________
    • 13. sand becomes ____________
    • 14. rounded pebbles, cobbles, and boulders become ______________
    • 15. angular pebbles, cobbles, and boulders become _______________