Time to Solidify an Ocean of Magma
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Transcript of Time to Solidify an Ocean of Magma
http://www.psrd.hawaii.edu/Mar09/magmaOceanSolidification.html
Time to Solidify an Ocean of MagmaTime to Solidify an Ocean of Magma
The Moon melted when it formed.How long did it take this ocean of magma to solidify?
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Time to Solidify an Ocean of MagmaTime to Solidify an Ocean of Magma
Aftermath of the giant impact:Rapid, hot formation of the Moon.
Magma ocean cooling began soon after lunar formation.Measurements of Sm-Nd and W isotopes indicate lunar formation occurred 4.517 billion years ago.
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Time to Solidify an Ocean of MagmaTime to Solidify an Ocean of Magma
Rock 72215 collected at Apollo 17 site.
A single zircon in 72215 shows a range of ages. The oldest cluster at 4.417 billion years.This is 100 million years after Moon magma ocean began to crystallize.