Lunar volcanoes would have deposited uranium in the samples collected by Chang’e 5, making it possible for scientists to measure the radioactive decay of this material.
Uranium is found associated with lead in rocks, and gradually leaves only the latter part over time. Simply put, the greater the ratio of lead to uranium, the older the rock.
As there may be a change in China’s discovery of lunar volcanoes, it is not the first time that the recent eruption has been speculated. In 2014, the Lunar Reconnaissance Orbiter launched by NASA showed a number of unusual features on the moon, suggesting a possible volcanism in the not-so-distant future (in the geological sense of time, anyway).
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