Earth calculation Using the Bowie chain map. Measure the distance between the Ko

Question

Earth calculation

Using the Bowie chain map. Measure the distance between the Kodiak - Giancomini seamounts, between the Giancomini- Denison, between between Welker Denson and between Welker to Dickens seamounts Give the distances in the proper units for all for measurements.. (see the scale at the bottom of the map) Use this distance and the ages given on the map to calculate the rate of movement between each pair and the average movement of the plate they are sitting on in cm/year. (be careful of units!)

Explanation / Answer

A) Kodiak-Giancomini

Distance= 175 kms

Age difference= 3Ma

Rate of movement= 175 km/ 3Ma = 5.83 cm/ year

B) Giancomini- Denison

Distance=575 kms

Age difference= 3 Ma

Rate= 575 kms/ 3 Ma= 19.167 cm/ year

C) Welker- Denson

Distance= 200 kms

Age difference= 3Ma

Rate= 200 kms/ 3Ma= 6.33 cm/year

D) Welker-Dickens

Distance= 225 kms

Age difference= 11 Ma

Rate= 225 kms/ 11 Ma = 2.45 cm/ year.

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