Problem 2
What sediments compose a deep-sea fan, and what sediments compose an alluvial fan? If you found a strata of one of these, how could you distinguish between them? What is their main physiographic distinction?
Problem 3
Where do sedimentary rocks mostly form? Through which process are they revealed to us in large quantities on continents?
Problem 4
Why is it not necessary to indicate the texture of detrital rocks on the identification chart for sedimentary rocks ?
Problem 5
During a hike in Utah's Zion National Park, you pick up a sedimentary rock sample. When you examine the sample with your hand lens, you see that the rock consists mainly of rounded glassy particles that appear to be quartz. To be sure, you conduct two basic tests. When you check for hardness, the rock easily scratches glass, which is what quartz would do. However, when you place a drop of acid on the sample, it fizzes. Explain how a rock that appears to be rich in quartz could effervesce with acid.
Problem 9
While on a field Michael Collier trip with your geology class, you stop at an outcrop of sandstone. An examination with a hand lens shows that the sandstone is poorly sorted and rich in feldspar and quartz. Your instructor tells you that the sediment was derived from one of two sites in the area: Site 1: A nearby exposure of weathered basaltic lava flows. Site 2: An outcrop of granite at the previous field trip stop up the road. Select the most likely site and explain your choice. What name is given to this type of sandstone?
