3D density model 2 Altiplano 2 Analytical geochemistry 2 Andes 2 Atacama 2 Attenuation tomography 2 Bouguer anomaly 2 Central Andes 2 Continental crusts 2 Contour map 2 Density models 2 Forward modelling 2 Gain insight 2 Geochemical data 2 Gravity 2 Gravity model 2 Hypocentre 2 Internal loads 2 Lithospheric structure 2 Low-velocity zone 2 Lower crust 2 Magnetotelluric studies 2 Moho 2 P-T conditions 2 Partial melt 2 Partial melting 2 Pressure and temperature 2 Puna 2 Receiver function analysis 2 Seismic lines 2