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24 votes
24 votes
Which element is used to detremine volcanic rock

User Sameh Deabes
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2 Answers

14 votes
14 votes
A common method is potassium and argon.
User Lukas Kalbertodt
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27 votes
27 votes
One of the most common methods to date volcanic rocks uses potassium radioactive parent and argon stable daughter).
User Steve Meisner
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