243 FIGURE 50. Inverted Morenci enrichment profile from Titley and Enders (1999). Panel A shows an incomplete first cycle enrichment profile that leaves partially leached hypogene mineralization above an immature enriched zone that still contains chalcopyrite and grades into the middle and nascent blankets at depth. Panel B follows initial extension and graben development where the base level initially drops and subsequently recovers to some level above the first cycle enrichment blanket. Panel C shows the second cycle enrichment blanket formed below the recovered water table that leaves a thicker overlying leached capping. Continued base level drop as shown in Panel D results in dissolution of the former enrichment blanket leaving a hematitic leached capping and a thicker, higher-grade enrichment blanket with its own middle and nascent zones that overlie the deeper, older first cycle profile.