Re: Oceanus Borealis, Mars takes some hits but will rise again
You may be right the ridges are compressional features but such features are also known to occur undersea.
BTW, I miswrote a statement in my post:
"He notes that M and E imply that the image shows the supposed shore is higher than the plains of the ocean."
That should read: "He notes that M and E imply the image shows the supposed shore is lower than the plains of the ocean."
Bob Clark