A basin is the inverse of a dome: a symmetrically-dipping syncline that appears on a geologic map as roughly circular or elliptical, with concentric layers.(Monroe and Wicander, 230) Because the strata dip upward, the exposed strata in a basin grow progressively younger from outside-in, with the youngest rocks in the center.(Monroe and Wicander, 231) Like domes, basins are often large in areal extent, a good example being the Michigan Basin. In geology, a dome is a deformational feature consisting of symmetrically-dipping anticlines; their general outline on a geologic map is circular or oval. ... In geology, a syncline is a type of fold that involves an upward slope to either side. ... This article is about the geologic use of the term, for other uses see Stratum (disambiguation) Interstate road cut through limestone and shale strata in eastern Tennessee In geology and related fields, a stratum (plural: strata) is a layer of rock or soil with internally consistent characteristics that distinguishes it...

See also

• Folds

See also folding A fold in Slichowice nature reserve in Kielce (Variscan orogeny) The term fold is used in geology when one or a stack of originally flat and planar surfaces, such as sedimentary strata, are bent or curved as a result of plastic (i. ...

Reference

• Monroe, James S., and Reed Wicander. The Changing Earth: Exploring Geology and Evolution. 2nd ed. Belmont: Wadsworth Publishing Company, 1997. ISBN 0314095772