Figure 20-Evolution of salt withdrawal fault systems above allochthonous salt (gray) as shown by a series of true-scale depth sections from the present-day Louisiana Gulf coast. The present-day structures from (a) deep water to (e) onshore represent evolutionary stages as the continental margin prograded across allochthonous salt. These deep-water examples are analogs for the early history of fully developed fault systems onshore and on the inner shelf.