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/yrDo 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? 60 W30 WNorthAmericanPlate30°NCNASAfricanPlateCAF6BAFBNA154.3 Myr(M25)1500 kmapproximate scale atcenter of map2021 Pearson Education, Inc.CNA to BNA1354 kmCNA to A2617 kmBNA to A1338 kmCAF to A2599 kmBAF to A1320 kmBNA to BAF2649 kmCAF to BAF1279 kmCNA to CAF5107 km154.3 Myr(M25)67.7 Myr(31y)Today67.7 Myr(31y) You will use isochrons on a map of marine magnetic anomalies to explore how the northern Atlantic Ocean Basinopened over the past 154 MYAThe map of the northern Atlantic Ocean Basin (Fig. A2.7.1) shows isochrons (lines of equal age) of the basaltic crustbeneath the sediments that have accumulated on the seafloor. These isochrons were derived by Maria Seton and hercolleagues (2012) from an analysis of marine magnetic anomalies, and their ages are based on the geomagnetic polaritytime scale. GPlates 2 was used to help make this map. The red line on the map shows the location of the divergentboundary-the axis of the mid-ocean ridge-between the North American and African Plates.

The area between CNA and BNA is the oceanic lithosphere. The distance between CNA and BNA is 1354km…

Answered: What is the average speed at which new…

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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The area between C_NA and B_NA 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 C_AF and B_AF 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?