Dating earth features (e.g. earth banks, cultivation terraces, ploughing ridges, ditch fills) has long been a significant methodological problem for archaeologists. A new archaeometric method provides a solution to this problem: dating by OSL-PD (Optically Stimulated Luminescence-Profiling and Dating). The development of a field profiling approach has greatly improved the reliability, precision and cost-effectiveness of luminescence dating. It is now possible to establish reliable chronological profiles of earth features and use them to understand long-term landscape change. I will present the methodology and its potential to address some key archaeological issues with reference to recent studies in Europe, the Mediterranean and beyond, especially the case of agricultural terraces.