(For this lab, you do not need to print the
figures in color; black and white will do. You do not need to print the
Ship Rock photo in number 4a, but you should take a look at it before Lab.
The stereopairs and maps will be provided in Lab).
(29 total points)
1. Examine Figure One. Describe in your own words what processes make up the rock cycle. (2)
2. What is the primary factor behind the production of earth materials, such as rocks and mountains? (1)
3. What processes bring uplifted earth materials back to base level? (2)
4. Use Figure Two and the stereopairs and topographic maps for Ship Rock, New Mexico, to answer the following questions:
(2) a). What type of
igneous features are Ship Rock and the vertical
walls radiating west and south from it?
(1) b). Are these
features composed of intrusive or extrusive igneous rock?
(3) c). Explain the formation of Ship Rock and the vertical walls.
(2) d). What is the relief of Ship Rock?
(3) e). Use the stereopair to determine which of the two radiating features has a greater relief. Confirm your answer by determining the relief of the two features from their highest elevation to their bases.
(2) f). Imagine that the length of the ridge extending south represents the radius of the volcano that previously existed at this site. What was the diameter (in miles) of the volcano?
5. Look at the stereopair of Menan Buttes, Idaho. These two cinder cones rise out of the Snake River floodplain in Idaho.
(1) a). What are these cinder cones composed of?
(1) b). What does the jumbled chaotic topography (covering the majority of the photo) represent?
(1) c). Is the elevation of the rim of each cone uniform or is one side higher than the other?
6. Look at the stereopair of Koko Head, Hawaii. This is a coastal area a few miles east of Honolulu. A series of craters has formed along a straight line as lava rose along an underground fissure. Koko Head has had eruptions from two vents and the rim of the lower one (Koko Crater) has been breached by the sea, so the crater now forms a small bay.
(1) a). Assume that the top of the photo is North. In what direction does the rift trend? (e.g. North-South)
(2) b). What was the prevailing wind direction when Koko Head and Koko Crater were formed? Is this the prevailing wind direction for that latitude and what is the name of the prevailing wind for that latitude?
7. Look at the topographic map and/or stereopairs of Crater Lake, Oregon.
(3) a). How did Crater Lake form?
(1) b). What type of landform is Wizard Island, the small island in the lake.
(1) c). What type of volcano
used to occupy the region that is now Crater Lake?
