How and why types and rates of weathering vary, at both the regional and local spatial scales, are of particular interest to physi-cal geographers. In addition to climate, the type of rock (lithology) and the nature and amount of fractures or other weaknesses in it are major influences on the effectiveness of the various rock weathering processes. How specific rocks weather in different natural settings is impor-tant for explaining the amount and formation of regolith, soil, and relief, but it also impacts the cultural environment because weathering affects building stone as well as rock in its natural setting..