Space/Science — HabitableZone

Space/Science » in reply to Pillow lava in Victoria crater?

re: Pillow lava in Victoria crater? Nope.

The internal structure of the out crop shows layering. In pillow lava there may be a concentric zoning (due to the thermal gradient) and / or a radial fracture (again, due to the thermal gradient)

The external structure of stacked pillow lavas tend to create an inverted tear-drop shape in cross-section. I don't see that in the outcrop in question.

<img src="http://www.bsu.edu/csh/geology/dept/geoeye2/picture18.jpg>0

What I see are the corners and edges eroded from blocks created by fractures related to desication and impact. Sort of what we'd call spheroidal weathering here on earth.

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