Geomorphology of Gale Crater, Rock on! Options

[ngunn]

I'd like a discussion thread about the geology detatched from the time limits of current MSL threads. We had a 'Geomorphology of Cape York' thread that attracted a lot of interesting posts. How about 'Geomorphology of Gale Crater'? I have one or two ideas but many more questions, and I'd like to post them in a longer-running thread away from the day to day imaging discussion. Any other takers?

For starters, does anybody have a contour map of this place like the one at Meridiani with 5m intervals?


ADMIN: You have your wishes fulfilled on UMSF (sometimes)

[Gladstoner]

Trying to make sense of the geologic context of the various units...

A major angular unconformity can be discerned by the truncation of the bench-forming sandstone (red). The Greenheugh Pediment sandstone (green) appears to be the basal unit of the overlying sequence:



Unmarked:



Closer:





The above images were derived from Neville's Gigapan 'MSL 3485 -3520 MR'

Map with possible field relations:






There is a possibility the Greenheugh Sandstone instead outcrops along the feature marked as blue.