International research team measures isotopic composition of lunar rocks
The dark areas on the surface of the moon, which we can also recognise from Earth, consist of basalts. Their high Ti contents are ultimately believed to be derived from a distinct mineralogical layer formed as part of the unstable crystal pile that constituted the lunar interior following solidification of a magma ocean, shortly after Moon formation. However, models to date have been unable to reproduce magma compositions with anomalously high Ti that also exhibit other appropriate chemical and physical characteristics, not least sufficiently low density to allow their eruption.
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