This pattern supports my theory that Homeplate is a structural basin, with the dips of all the layers pointing towards the center. A plate is a perfect example.
The article you linked to last week was excellent and I've not had time to digest it all. The geologists believe they are dealing with a different sort of rock at Homeplate...much more explosive type eruption (see Marcia's recent post). But the article did not indicate that Homeplate was the eruptive center for this material.
If I've time, I'll make a 3D version of this figure:
But in the meantime, here's an old sketch of the outcrop pattern of a plunging syncline:
(image from this site)
Space/Science » in reply to Spirit see some interesting layering.
it's the outcrop pattern of a plunging syncline / basin structure.