The growth of stylolites We will first look at a series of three movies in low resolution that vary in physical size (and thus also in grain size). Size effects -- elastic and surface energies The following simulations use models of low resolution with 100 particles along the horizontal direction so that the individual particles become visible. Dark areas represent the actually dissolved material, the original lattice filled the whole picture. The interface-particles that can dissolve are red. The physical length of the first simulation (Fig. 5) is 10cm so that the grain size would be 1mm. The model contains 5 percent of pinning particles, the pinning particles dissolve half as fast as the host-rock. Figure 5 and the associated movie illustrate that the stylolite grows relatively fast and develops at least one very pronounced spike or tooth. These structures are typical for the elastic energy dominated growth regime. At the presented settings the transition between the elastic energy dominated and the surface energy dominated regime lies around the mm-scale. This means that as soon as the wavelength of the roughness reaches this scale (about 1 mm) the growth will be dominated by the elastic energy. Since the grain size is already 1mm the stylolite grows in the elastic energy dominated regime from the beginning. Therefore it will develop relatively pronounced teeth. In addition this stylolite has relatively good tracking abilities, it can memorize a large part of the dissolution that took place at the interface. If one compares the