A low area in the earth's crust, of tectonic origin, in which sediments have accumulated. Such features were drainage basins at the time of sedimentation but are not necessarily so today.
a depression in the Earth's crust in which sediments accumulate
An extensive area where substantial amounts of sediments occur. Most sedimentary basins are geologically depressed areas. The sediments are usually thickest in the middle, thinning toward the edges.
A depression, created as a consequence of subsidence, that fills with sediment.
a geographical area, such as the Western Canada Sedimentary Basin, in which much of the rock is sedimentary (as opposed to igneous or metamorphic) and therefore likely to contain hydrocarbons
January 2007 (UTC)The term sedimentary basin is used to refer to any geographical feature exhibiting subsidence and consequent infilling by sedimentation. As the sediments are buried, they are subjected to increasing pressure and begin the process of lithification.