One can test the hypothesis that 'differential erosion' is a significant factor in shaping the details of landscape in the areas discussed above by comparing land surface elevation to the character of the underlying bedrock. This may be done using the following procedure. 1. 2. Examine the topographic profile X-Y shown in Figure 7, above. The location of this profile is indicated in Figures 3 and 5. Create a geologic cross section by placing the edge of a blank piece of paper along line X-Y in Figure 5. Carefully mark the locations of the end of the line (points X and Y) on the edge of the paper. Now draw strips of black on the edge of the paper to indicate the locations of all bedrock that is relatively resistant to erosion (all patterns on the map except the New Jersey "Redbeds" and the Inwood Formation). Next, take the marked edge of the paper and place it along the topographic profile X-Y in Figure 7. Wherever there is a resistant rock present, make a vertical black stripe from the top to the bottom of the profile. Do the ridges and valleys on the topographic profile coincide, respectively, with the black and white sections along the geologic cross section? Yes No Is the hypothesis of differential erosion confirmed or negated? (Circle One) Confirmed
One can test the hypothesis that 'differential erosion' is a significant factor in shaping the details of landscape in the areas discussed above by comparing land surface elevation to the character of the underlying bedrock. This may be done using the following procedure. 1. 2. Examine the topographic profile X-Y shown in Figure 7, above. The location of this profile is indicated in Figures 3 and 5. Create a geologic cross section by placing the edge of a blank piece of paper along line X-Y in Figure 5. Carefully mark the locations of the end of the line (points X and Y) on the edge of the paper. Now draw strips of black on the edge of the paper to indicate the locations of all bedrock that is relatively resistant to erosion (all patterns on the map except the New Jersey "Redbeds" and the Inwood Formation). Next, take the marked edge of the paper and place it along the topographic profile X-Y in Figure 7. Wherever there is a resistant rock present, make a vertical black stripe from the top to the bottom of the profile. Do the ridges and valleys on the topographic profile coincide, respectively, with the black and white sections along the geologic cross section? Yes No Is the hypothesis of differential erosion confirmed or negated? (Circle One) Confirmed
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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