'Earth Revealed: Sedimentary Rocks' Geology Worksheet (Page 4 of 4) in pdf

'Earth Revealed: Sedimentary Rocks' Geology Worksheet Page 4

11. What are mud cracks? Draw a sketch. Explain the sedimentary conditions in which mud cracks are formed.

12. From the example of the “Ridge Basin” in southern California; list the FOUR sedimentary features that are

indicative of deposition in a lake basin.

13. What is a “delta”; how is it formed, and what are some of the sedimentary features that indicate such an

environment of deposition.

14. Draw a sketch of a “scour-and-fill” structure. What does scour and fill indicate about ancient sedimentary

environments.

15. True or False: Scour and fill structures would be highly likely in a deep lake or deep ocean environment.

16. What does the occurrence of angular and poorly sorted gravel fragments indicate about the sedimentary

history along the margins of the Ridge Basin California.

17. True or False: sedimentary rocks are commonly the source of fossils fuels such as oil, natural gas, and

coal?

18. True or False: sedimentary rocks are commonly used as building and construction materials.

19. True or False: I love geology.

'Earth Revealed: Sedimentary Rocks' Geology Worksheet Page 4