Duebendorfer and Sharp (1998) interpreted three faults in the Gold Butte−White Hills area, Arizona, as forming a 55-km-long detachment fault, the South Virgin−White Hills detachment fault. They suggested that the fault might represent a breakaway for extensional allochthons located to the west. Their report deals mainly with the central segment of the South Virgin−White Hills detachment fault, i.e., the Salt Spring fault segment. This discussion addresses two apparent inconsistencies, one spatial and one temporal, in their portrayal of the faulting and tilting in the area of the Salt Spring segment. An alternative interpretation that does not include a detachment fault...

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