Exploratour - Does Europa have an Ocean?
5.) The area in this picture is called the Conamura Chaos Region. It is the most suggestive to geologists of a subterranian ocean. Units which were identified as "chaotic" suggest the process called "rafting". This is a process familiar to geologists from the terrestrial Antarctic, where blocks of glacial ice break off and drift away from the parent body, rotating as they do. Here blocks of terrain seem to have broken off from a main body and are rotated. Notice that for this to happen requires a very soft layer underneath the icy block.
This is page 14 of 20
This is page 14 of 20