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geology cm/yr

Wed May 27, 2009 8:04 pm

Taking a new class and am very rusty. I need to convert/figure out some problems in google earth. for ex...my first question is asking- what was the rate in centimeters per yr (cm/yr) and direction of plate motion in the Hawaiian region from 5.10 to 1.76 million years ago? (mya)...

I really can't rememebr where to start or how to set up my equation. I measured the distance from the two volcanos, 5.10 mya and 1.76 mya...and the distance is about 301 km. Can anyone help? thanks~

Re: geology cm/yr

Fri May 29, 2009 3:34 am

geology 101 wrote:Taking a new class and am very rusty. I need to convert/figure out some problems in google earth. for ex...my first question is asking- what was the rate in centimeters per yr (cm/yr) and direction of plate motion in the Hawaiian region from 5.10 to 1.76 million years ago? (mya)...

I really can't rememebr where to start or how to set up my equation. I measured the distance from the two volcanos, 5.10 mya and 1.76 mya...and the distance is about 301 km. Can anyone help? thanks~


distance / years = average rate of movement

Using scientific notation:
301 km / (5.10E06 yrs - 1.76E06 yrs) = average rate
3.01E0 km / 3.34E06 yrs = 9.01E-05 km/yr average
Convert km to cm
1.00E05 cm * 9.01E-05 km/yr = 9.01 cm/yr average rate of movement

Movement of the Pacific oceanic plate is to the NW, more or less.

More info

List of all units you can convert online
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Convert grams to cups
Grams to milliliters
Imperial vs US Customary
History of measurement