strath

flowing through Strathspey A strath is a large valley, typically a river valley that is wide and shallow (as opposed to a glen, which is typically narrower and deep).

flowing through Strathspey A strath is a large valley, typically a river valley that is wide and shallow (as opposed to a glen, which is typically narrower and deep). ==In geology== In geology, a strath is a bedrock surface within a river valley that marks a base level of erosion by the river. This may underlie a contemporary strath valley floor, corresponding to the present base level, but it may also correspond to a former base level now preserved in the geologic record. When a river in a strath valley is rejuvenated by a drop in base level, remnants of the former valley floor may be preserved as strath terraces. These may record past climate oscillations or may be a result of river meandering. If a change in sedimentation rates results in renewed deposition of sediments (aggradation) in a strath valley, the original strath surface may be buried under fresh sediments and become part of the geologic record. For example, at least three such straths are present in the valley of the Rio Grande River near Albuquerque, New Mexico. ==See also== Annandale, Dumfries and Galloway Dale (place name element) ==References==

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