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Name _______________________________________ Due Date _____________ Per. _______ Ch 6 DR – Sedimentary Rocks 1. What are the three most common types of sedimentary rocks? (p. 113) _____________________, _____________________ , & _____________________ 2. How do geologists determine the origin and environment of deposition of sedimentary rocks? (p. 113) 3. What are 2 sources of sediments? (p. 114) _____________________ & _____________________ 4. Arrange the following sediments from largest to smallest: silt, pebble, boulder, clay, sand, cobble. (p. 114) ___________ ___________ ___________ ___________ ___________ ___________ 5. Illustrate with a diagram and explain how sediment is sorted by a river. (p. 115) 6. What is deposition? ____________________________________________________________ What are 3 ways in which sediment may be deposited? (p. 115-116) ____________________, ____________________, &____________________ 7. How can geologists studying sedimentary rock determine the ancient environments where the rock was formed? (p. 116) 8. What is lithification? ___________________________________________________________ List and describe the 3 processes that contribute to lithification. (p. 117) ____________________ ____________________ ____________________ 9. What are the 3 ways sedimentary rocks may form? What are the names of the types of rock that result from these processes? List an example of each type of rock. (p. 118) How Sedimentary Type of Sedimentary Example Rock Rock Forms? Rock Name _______________________________________ Due Date _____________ Per. _______ 10. Distinguish between a breccia and a comglomerate. (p. 118) 11. Distinguish quartz sandstone, arkose, and greywacke. (p. 119-120) 12. Describe 3 characteristics of shale. (p. 120-121) _____________________, _____________________ , & _____________________ 13. What is the major component of limestone? _____________________ Describe 3 ways in which limestone may be formed? (p. 121-122) _____________________, _____________________ , & _____________________ 14. What is dolomite? _____________________ What are the 2 ways in which dolomite forms? (p. 124) _____________________ & _____________________ 15. How can chert be distinguished from limestone? (p. 124) 16. How are evaporates formed? ________________________________________________________ Name 2 common evaporate rocks and the minerals they are made of. (p. 125) _____________________ & _____________________ 17. How are the different varieties of coal recognized? (p. 126) 18. What does the principle of original horizontality state? __________________________________ _________________________How can you distinguish the age of horizontal rock layers? (p. 128) _______________________________________________________________________________ 19. What is a formation? ____________________________________________________________ List 2 criteria by which formations are distinguished? (p. 129-130) _____________________ , & _____________________ 20. What types of environments produce the most sedimentary rocks? _____________________ Why do these environments produce more of these rocks than continental environments? (p. 133) _______________________________________________________________________________