essentials of geology, 13th hich rock will weather more rapidly? Why? The accomp
ID: 116001 • Letter: E
Question
essentials of geology, 13th
hich rock will weather more rapidly? Why? The accompanying photo shows Shiprock, a well-known landmark i 4 the northwestern corner of New Mexico. It is a mass of igneous rock that represents the "plumbing" of a now vanished volcanic feature Extending toward the upper left is a related wall-like igneous structure known as a dike. The igneous features are surrounded by sedimentary rocks. Explain why these once deeply buried igneous features now stand high above the surrounding terrain. What term in Section 6.4, Rates of Weathering," applies to this situation? 8 What might caus of parent materi materials? 9 Using the map soil order in the point A on the Southwest (po thing in comn 10 This soil samm was the sampExplanation / Answer
The Shiprock was formed when the magma cooled below the surface of earth at slow rate. It was originally formed 1000-2000 ft below the surface millions of year ago. The sedimentary rock around this formation gets eroded and compared to rate of weathering of surrounding rock the igneous rock weathers slowly causing the ground level decrease faster.
This forms a mountain of igneous rock over the millions of years time period. The different rate of weathering is the cause for the formation of Shiprock. The sedimentary rock is more pores so there is more area exposed for the weathering also the composition of the rocks makes them prawn to weathering. The dike behind the Shiprock is the originates from the center of the structure which indicates that the dike is from where the magma came in during the formation of the structure.
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