I'm not sure if Mars is tectonically similar to earth. at one time maybe, lots of volcanic activity at one time tho.
There is lots of data gathered but lots more needed as we just scratching the surface.
I've watched the images that have been sent back over the years, we need to send rovers to cydonia amongst other places on Mars.
Well, we can agree on that (but, uh, what is cydonia and why is it important?).
Tha ganges chasm kind of looks like a river bed, but then again, different. What would a geologist say?