Isochron Diagrams

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Isotope

Slope

Age

0.00 HL
4. How could you tell an older rock from a younger rock just by looking at their isochrons?
  The older rock would have more points on its isochron.
  The younger rock isochron would have a steeper slope.
  The older rock isochron would have a negative slope.
  The older rock isochron would have a steeper slope.
  There is no way to tell which is older.

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