I do not agree with the conclusion reached by Hodgetts et al. (2001) that a deltaic shoreline in two adjacent growth fault blocks was simultaneously prograding and retrograding, for reasons explained in this article. My principal objection is illustrated in their figure 14. The block diagram and paleoenvironmental map (Hodgetts et al., 2001, figure 14c, d) show the onset of growth faulting. As the fault begins to offset the depositional surface, Hodgetts et al. (2001) argue that the greater subsidence associated with the hanging-wall (downthrown) block caused updip migration of the shoreline, while the shoreline continued to prograde...

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