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In an ocean basin a ridge runs in a north-south direction. It’s offset by a transform fault, which extends beyond the ridge offset as a fracture zone (Fig. 3.1). To the south of the fracture zone, 940 km to the east of the ridge, the depth to the seafloor is 5000 m. Use the age-depth relationship (Fig. 3.2) as well. The position of the ridge to the north of the transform fault has not been surveyed. Assuming that the spreading rate has remained constant, what is the amount of offset on the ridge due to the transform fault?

In an ocean basin a ridge runs in a north-south direction. It’s offset by a transform fault, which extends beyond the ridge offset as a fracture zone (Fig. 3.1). To the south of the fracture zone, 940 km to the east of the ridge, the depth to the seafloor is 5000 m. Use the age-depth relationship (Fig. 3.2) as well. The position of the ridge to the north of the transform fault has not been surveyed. Assuming that the spreading rate has remained constant, what is the amount of offset on the ridge due to the transform fault?

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
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In an ocean basin a ridge runs in a north-south direction. It’s offset by a transform fault, which extends beyond the ridge offset as a fracture zone (Fig. 3.1). To the south of the fracture zone, 940 km to the east of the ridge, the depth to the seafloor is 5000 m. Use the age-depth relationship (Fig. 3.2) as well.

The position of the ridge to the north of the transform fault has not been surveyed. Assuming that the spreading rate has remained constant, what is the amount of offset on the ridge due to the transform fault? 

 

depth (km) 3 5- 5 10 • Pacific Ocean Indian Ocean + Atlantic Ocean magnetic anomaly number 6 8 11 13 18 21 20 30 40 50 age (Ma) 25 30 32 I 60 70 80 90 100
Transcribed Image Text:depth (km) 3 5- 5 10 • Pacific Ocean Indian Ocean + Atlantic Ocean magnetic anomaly number 6 8 11 13 18 21 20 30 40 50 age (Ma) 25 30 32 I 60 70 80 90 100
fracture zone or transform fault ridge 500 km depth 5500 m depth 5 000 m
Transcribed Image Text:fracture zone or transform fault ridge 500 km depth 5500 m depth 5 000 m
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