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Type of soil or rock Soil Sand, dry silt, and fine-grained topsoil Alluvium Compacted clays, clayey gravel, and dense clayey sand Loess Rock Slate and shale Sandstone Granite Sound limestone P-wave velocity m/sec 200-1000 500-2000 1000-2500 250-750 2500-5000 1500-5000 4000-6000 5000-10,000

Type of soil or rock Soil Sand, dry silt, and fine-grained topsoil Alluvium Compacted clays, clayey gravel, and dense clayey sand Loess Rock Slate and shale Sandstone Granite Sound limestone P-wave velocity m/sec 200-1000 500-2000 1000-2500 250-750 2500-5000 1500-5000 4000-6000 5000-10,000

Applications and Investigations in Earth Science (9th Edition)
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
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(c) The geophysical method is used to evaluate rapidly the subsoil characteristic. The seismic refraction survey has been performed to obtain the type of soil and the thickness of each layer. Table 2 shows the results of a refraction survey at a site. (i) Determine the type of soil according Table 3. (ii) Predict the thickness of each layer and the depth of the rock from the ground surface.
Transcribed Image Text:(c) The geophysical method is used to evaluate rapidly the subsoil characteristic. The seismic refraction survey has been performed to obtain the type of soil and the thickness of each layer. Table 2 shows the results of a refraction survey at a site. (i) Determine the type of soil according Table 3. (ii) Predict the thickness of each layer and the depth of the rock from the ground surface.
Distance from the source of disturbance (m) 2.5 5.0 Type of soil or rock Soil 7.5 10.0 15.0 20.0 25.0 30.0 40.0 50.0 Loess Rock TABLE 2 Sand, dry silt, and fine-grained topsoil Alluvium Compacted clays, clayey gravel, and dense clayey sand Slate and shale Sandstone Granite Sound limestone Time of first arrival of P-waves (sec x 10³) 5.08 10.16 15.24 17.01 20.02 24.20 27.10 28.00 31.10 33.90 Table 3 P-wave velocity m/sec 200-1000 500-2000 1000-2500 250-750 2500-5000 1500-5000 4000-6000 5000-10,000
Transcribed Image Text:Distance from the source of disturbance (m) 2.5 5.0 Type of soil or rock Soil 7.5 10.0 15.0 20.0 25.0 30.0 40.0 50.0 Loess Rock TABLE 2 Sand, dry silt, and fine-grained topsoil Alluvium Compacted clays, clayey gravel, and dense clayey sand Slate and shale Sandstone Granite Sound limestone Time of first arrival of P-waves (sec x 10³) 5.08 10.16 15.24 17.01 20.02 24.20 27.10 28.00 31.10 33.90 Table 3 P-wave velocity m/sec 200-1000 500-2000 1000-2500 250-750 2500-5000 1500-5000 4000-6000 5000-10,000
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