Exploring Desert Landforms: A 3D Geology Adventure, Lab Reports of Geology

Download Exploring Desert Landforms: A 3D Geology Adventure and more Lab Reports Geology in PDF only on Docsity! Page 1 G202 – Physical Geology Deserts Objectives: • To recognize and describe desert landforms in US national parks. • To describe the development of desert landforms in the Basin and Range area of North America. Write-up: Your write-up should include the information asked for in part 1 and your responses to exercises in part 2. While part 1 should be typed, for part 2 simply write your answers on the handout. Method: Part 1: 3D desert landform “scavenger hunt” One of the more unique sites on the Internet is one by the US Geological Survey called “Geology of the National Parks: 3D and photographic tours featuring park geology and natural history” < http://3dparks.wr.usgs.gov/ >. What is unique about the site is that it contains a large collection of anaglyphs of geologic features found in the parks. An anaglyph is a like the stereo-photos that we looked at earlier in the term in that it allows you to view maps and photographs in 3D. The difference is that in an anaglyph the stereo pairs are merged into a single image. Before merging the photographs, one is given a reddish tint, while the other is given a bluish tint. If you look at the merged photo pair through glasses that have one red and one blue lens each eye sees only one of the images. Your brain then merges the two images into something that looks 3D. In part 1 of this lab you will be exploring this site to find anaglyphs that show one of the following items. Once you find a anaglyph that contains the feature, record the name of the park it is found in, where in the park it is, and the web address of the anaglyph. Also make a simple sketch of the feature and write two sentences describing it. I’ll be providing you with 3D glasses in lab. What you are looking for… 1. An example of wind erosion in a desert. 2. An example of stream erosion in a desert. 3. An alluvial fan. 4. A playa. 5. A sand dune. 6. A debris flow in a desert. 7. Salt polygons. 8. A sandstone arch