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Basin (geology) In geology, referring to the basin-shaped warping of underlying bedrock in a region. Or, in sedimentology, a low and usually sinking region that is filled with sediments from adjacent positive areas. Sag (geology)When a piece of lithosphere that was heated and stretched cools again, its density will rise, causing isostatic subsidence. If this subsidence continues long enough the basin is called a sag basin, or, a sag. Uplift (geology) In geology, an uplift generally refers to the result of tectonic plate collisions and results in mountain ranges or a more modest uplift over a large region. Trough (geology)In geology, a trough generally refers to a linear structural depression that extends laterally over a distance, while being less steep than a trench. A trough can be a narrow basin or a geologic rift.
