Bed (geology)
In geology a bed is the smallest division of a geologic formation or stratigraphic rock series marked by well-defined divisional planes (bedding planes) separating it from layers above and below. A bed is the smallest lithostratigraphic unit, usually ranging in thickness from a centimetre to several metres and distinguishable from beds above and below it. Beds can be differentiated in various ways, including rock or mineral type and particle size. The term is generally applied to sedimentary strata, but may also be used for volcanic flows or ash layers.
In a quarry, a bedding is a term used for a structure occurring in granite and similar massive rocks that allows them to split in well-defined planes horizontally or parallel to the land surface.
Read more about Bed (geology): Engineering Considerations
Famous quotes containing the word bed:
“And youre too fired up to go to sleep, you sit at the kitchen table. Its really late, its really quiet, youre tired. Dont wanna go to bed, though. Going to bed means this was the day. This Feb. 12, this Aug. 3, this Nov. 20 is over and youre tired and you made some money but it didnt happen, nothing happened. You got through it and a whole day of your life is over. And all it isis time to go to bed.”
—Claudia Shear, U.S. author. New York Times, p. A21 (September 29, 1993)