The rocks in question are all extrusive volcanic rocks -
basalts. The Ti variation reflects that the lunar mantle is
heterogeneous. The source regions where different episodes of
melting occurred had to have varied considerably in ilmenite
abundance. The mantle of the Moon is not well
Yes, Randy is correct about titanium content varying
around the Moon.
What are the petrological reasons why this varies?
In southeast Pennsylvania, we have high titanium
diabase intrusions (The York Haven intrusion) and
low titanium diabase intrusions in highly folded and
complex rocks which
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