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2. The area between CNA and BNA in Fig. A2.7.1 consists of oceanic lithosphere added along the Mid-Atlantic Ridge to the North American Plate between 154.3 and 67.7 Myr. What is the average speed at which new lithosphere was added to the North American Plate along that line? Show your work. mm/yr Do the same analysis for the lithosphere between points CAF and BAF. What is the average speed at which new lithosphere was added to the African Plate along that line? mm/yr Which plate moved faster relative to the ridge between 154.3 and 67.7 Myr, if either?

2. The area between CNA and BNA in Fig. A2.7.1 consists of oceanic lithosphere added along the Mid-Atlantic Ridge to the North American Plate between 154.3 and 67.7 Myr. What is the average speed at which new lithosphere was added to the North American Plate along that line? Show your work. mm/yr Do the same analysis for the lithosphere between points CAF and BAF. What is the average speed at which new lithosphere was added to the African Plate along that line? mm/yr Which plate moved faster relative to the ridge between 154.3 and 67.7 Myr, if either?

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
Problem 1LR
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Figure A2.7.2 CNA to BNA BNA to A BAF to A CAF to BAF 1354 km 1338 km 1320 km 1279 km CNA to A CAF to A BNA to BAF CNA to CAF 2617 km 2599 km 2649 km 5107 km mm/yr 1. What is the average speed at which BNA drifted away from the ridge at A during the past 67.7 Myr expressed in mm/yr? Show your work. What is the average speed that BAF drifted from A? Which plate moved faster relative to the ridge over the past 67.7 Myr, if either? mm/yr 2. The area between CNA and BNA in Fig. A2.7.1 consists of oceanic lithosphere added along the Mid-Atlantic Ridge to the North American Plate between 154.3 and 67.7 Myr. What is the average speed at which new lithosphere was added to the North American Plate along that line? Show your work. mm/yr Do the same analysis for the lithosphere between points CAF and BAF. What is the average speed at which new lithosphere was added to the African Plate along that line? mm/yr Which plate moved faster relative to the ridge between 154.3 and 67.7 Myr, if either?
Transcribed Image Text:Figure A2.7.2 CNA to BNA BNA to A BAF to A CAF to BAF 1354 km 1338 km 1320 km 1279 km CNA to A CAF to A BNA to BAF CNA to CAF 2617 km 2599 km 2649 km 5107 km mm/yr 1. What is the average speed at which BNA drifted away from the ridge at A during the past 67.7 Myr expressed in mm/yr? Show your work. What is the average speed that BAF drifted from A? Which plate moved faster relative to the ridge over the past 67.7 Myr, if either? mm/yr 2. The area between CNA and BNA in Fig. A2.7.1 consists of oceanic lithosphere added along the Mid-Atlantic Ridge to the North American Plate between 154.3 and 67.7 Myr. What is the average speed at which new lithosphere was added to the North American Plate along that line? Show your work. mm/yr Do the same analysis for the lithosphere between points CAF and BAF. What is the average speed at which new lithosphere was added to the African Plate along that line? mm/yr Which plate moved faster relative to the ridge between 154.3 and 67.7 Myr, if either?
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