The oceanic plates are themselves formed from the divergent boundary, so probably not. I know this is a crude way to simulate plate tectonics. I'm going to change the simulation so that divergent boundaries happen only at land-land and ocean-ocean boundaries. Land-sea or sea-sea boundaries produces subduction zones. Land-land convergent boundaries produce mountains. Red and green lines depict convergent boundaries. Is it safe to assume that divergent boundaries only occur between land-land and ocean-ocean plate boundaries? There also doesn't seem to be any examples on Earth from what I could find. Tile elevations are generated by multiplying an envelope ( e^ ) with a function for different types of plate boundaries and relative drift velocities.įor the sake of realism, is it possible to have a land-ocean divergent plate boundary? I could not find anything online. The continental plates are randomly generated, with random initial elevation and drift velocities assigned. I am using a rough simulation of tectonic plates to create mountain ranges and other geological features.Ī planet surface consists of several plates, which consists of tiles. To further elucidate the similarities to the Earth's surface structure and velocity field we investigate the number of plates, their size and size distribution, toroidal-poloidal ratio, mobility and the sensitivity of our findings to the presence of compositional heterogeneity in the deep mantle.I am procedurally generating planets for an open world space sandbox game. Furthermore, we observe a relatively narrow window of yield stress structures compatible with the exclusive manifestation of these surface features. Specifically, transform -like offsets appear in the divergent plate boundaries while convergent boundaries appear as smooth features lacking any offset. We examine the influence of yield stress magnitude and structure on high resolution vigorously convecting 3D mantle models and find a significant distinction between convergent and divergent surface features not obtainable in studies of 2D analogs. The application of a three-component stress-dependent rheology, consisting of fixed surface yield stress an upper mantle yield stress gradient increasing with depth and a uniform lower mantle yield stress, enables the onset of surface mobility and the generation of localized regions of deformation. Implementing global dynamic models in a 3D spherical geometry, we investigate the influence of mantle rheological structure on the surface velocity field as well as the formation of regions of localized deformation. In contrast, Earth's convergent boundaries, associated with subduction, appear as smooth contiguous features with no recurring appearance of transform faulting. The Mid-Atlantic Ridge is an expression of a divergent surface feature exhibiting numerous offsets in the plate boundary where each offset is associated with a transform fault feature. On Earth, surface deformation is enabled primarily through the development of convergent and divergent boundaries manifested by regions of subduction and ridge - like spreading respectively.
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