Types of rift basins shown in map view (top row) and cross-section view (bottom row). Basement-involved faults are shown with thick lines; detached faults, which terminate in salt or thick shale (black), are shown with lighter lines. For case 2, shortening was followed by extension. For case 4, extension was followed by shortening. In map for case 4, only anticlinal folds are shown. For case 3, the border fault is an oblique slip with normal and right-lateral components of movement; in cross section, A=movement away from viewer; T=movement toward viewer. Modified from Withjack et al. (2002).