ML, those areas are likely masses of ultramafic rocks (similar to what we have beneath the earth's upper crust).
i know this is WAY off topic, but a great opportunity to say.........if any of you or yer friends or acquaintances really believe the moon landing a conspiracy......let me be candid.....open yer eyes and get a life, not everything is a conspiracy.
Send me a private message if you feel the need to prove yer case, and i'll be happy to share some of the things I learned as a result of my dad being involved with the project from the early 1960's through the early 70's.
Sunil, who'd a thunk this topic would go 7 pages and almost 100 replies, even if half of it is off topic...way to start some fun dude.