

Isochron Diagrams
This part of the agedating activity involves plotting points and adjusting the slope of lines within an xy coordinate system. If you need some practice, click HERE. The points (M1, M2, and M3) represent the ratios of parent/daughter isotopic compositions of three minerals. Adjust the slope of the line connecting the points by clicking on the "up" or "down" arrows. This line, called an Isochron, increases in slope as time passes. 
Answer the question, then click Next

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