FIG. 12. Geomorphologic map, showing the distribution of Tertiary landforms in the study area. The precordillera and llanuras constaneras are dominated by, respectively, the Altos de Camilaca (dark gray) and Pampa Lagunas (light gray) pediplains and their correlatives (numbers in brackets refer to stages in Fig. 9). In contrast, the areally restricted landforms of the Multiple Pediment stage (Fig. 2), comprising the Cerro de las Chulpas, Pampa Sitana, and Cerro Sagollo pediments and their correlatives, are concentrated along throughgoing rivers. The relationships between the landforms of the Multiple Pediment stage and remnants of the Altos de Camilaca and Pampa Lagunas pediplains in the Moquegua-Pampa Guanero transect are shown in greater detail in an inset at the top right of the figure, whereas those in the area around the Cachuyo and Cachuyito prospects, north-northeast of Cocachacra, are shown in an inset at the top center.