Surfical Processes Essay

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GO101 Surfical Processes (25 pts) 1. All of the questions for this week’s homework involve looking at photos Week 5 Homework 4 web page and relating what you see to the diagrams and figures in your text. To figure out the answers to this question you need to relate the material in chapter 10 to the orthophoto map of part of the Bear River Valley (figure 1), which is on Week 5 Homework 4 web page or the reference sheet. a. What is the name of the feature labeled A or B (A and B are the same feature)? Meander cutoff. b. How did the feature labeled A or B form (2 pts)? The meander cutoff was formed from sediment building up and cutting off the meander neck channel and creating a new, shorter channel. c. What is the name of the feature labeled C? Oxbow Lake. d. Is feature D younger or older that feature C? older. e. Refer to the feature labeled E. i. What is the name of this feature? Point bar ii. Is this an area of erosion or deposition (choose one)? deposition. f. Refer to the feature labeled F. i. What is the name of this feature? Cut bank. ii. Is this an area of erosion or deposition (choose one)? Erosion. g. What type of stream is this? meandering river. 2. To figure out the answers to this question you need to relate the material in chapter 10 to the delta photos on the Week 5 Homework 4 web page or the reference sheet. a. Matching. Use Delta Photo Set A. Match the satellite image number to the type of delta. i. Set A 1 Stream-Dominated ii. Set A 2 Tidal-Dominated. iii. Set A 3 Wave-Dominate. b. Matching. Use Delta Photo Set B. Match the satellite image number to the type of delta: i. Set B 2 Stream -Dominated ii. Set B 1 Tidal-Dominated. iii. Set B 3 Wave-Dominate. c. Use Delta Photo Set C. All of these photos represent one type of delta. i. Are these deltas wave-dominated, tidal-dominated, or stream-dominated?

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