Figure 23 -- Reconstruction (in sequence [animation]) above a salt-based detachment in the onshore southern Louisiana Frio trend. Contrast the characteristic reconstructed geometry of a basinward thinning wedge onlapping a now evacuated allocthonous sald body with a shale-based detachment system (Figure 22). Reconstruction is by the MESH method. Sections from first to last represent successive stages of evolution from Oligocene to present day.