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Rob Sullivan and the power of wind and fractures From the outset, the MER Athena Science Team has been working with multiple working
hypotheses to try and determine how, what, and when Perseverance formed. Rob
Sullivan presented his research showing that two forces have visibly impacted the
morphology of the valley: wind and faulting. Advancing on Larry Crumpler’s talk about
fractures, he proposed that the Perseverance trough system might have been formed by
“a network of ancient fractures and faults” that reactivated “conceivably multiple times.” Rob Sullivan / A.J.S. Rayl