THEMIS: Giant pit crater collapse on Alba Mons

THEMIS Image of the Day, July 10, 2018. This VIS image is located on the eastern flank of Alba Mons. Linear faults and graben surround the volcano aligned north/south, intersecting and deflected around the summit. The large graben is called Phlegethon Catena. The term catena means a string of craters or circular depressions.

The depressions in this image were likely formed by the collapse of the preexisting surface into a subsurface void. Graben are caused by blocks of material that drop down along paired faults.

More THEMIS Images of the Day by geological topic.

This entry was posted in Reports and tagged , , , , , , , , , , , . Bookmark the permalink.

Comments are closed.