Why does solidifying out of a melt reset the radio-clock for dating rocks? Miner
ID: 1479057 • Letter: W
Question
Why does solidifying out of a melt reset the radio-clock for dating rocks?
Mineral crystals separate radio-isotopes from their daughter isotopes.
Radio-isotopes decay at a different rate in the solid form.
The , , and/or particles can leave the solid.
The , , and/or particles can leave the liquid.
a.Mineral crystals separate radio-isotopes from their daughter isotopes.
b.Radio-isotopes decay at a different rate in the solid form.
c.The , , and/or particles can leave the solid.
d.The , , and/or particles can leave the liquid.
Explanation / Answer
(a) In liquid state, atoms are loosely bonded compare to solid and they can easily move around and boil off to transformed to chemically more favourable state. In solid, material start with large amount of daughter isotopes than chemically fevourable state hence the time is said to be reset
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