One quote from Thomas Watters is very instructive: "We think the moon is in a general state of global contraction because of cooling of a still hot interior"
Always the same assumption that the telluric bodies must be cooling and thus contracting. I bet they were surprised to find grabens! Especially less than 50 Ma old!
Also the lobate scarps are interpreted as evidence of the moon contraction, but I wonder if they explored the hypothesis that these thrust faults formed at the front of nappes?
The cause of the graben is discussed in the paper, but no clear conclusion arise from the discussion. Shallow intrusion is discussed.
Some of the grabens seem to be associated with lobate scarps, suggesting that they are somewhat coupled. Their origin could be an uplift leading to surface extension coupled to outward compression and nappe formation.
Re: Neal Adams - Moon
Posted: Tue Nov 06, 2012 4:03 pm
by Dinox
Interesting paper…
Prof. Pascual Jordan suggested in his book, Expanding Earth, that the numerous rilles and valleys on our Moon indicate expansion. Here’s a short video illustrating some of his ideas.