| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Key bed | Mining | A. A well-defined, easily identifiable stratum or body of strata that has sufficiently distinctive characteristics (such as lithology or fossil content) to facilitate correlation in field mapping or subsurface work b. A bed, the top or bottom of which is used as a datum in making structure-contour maps. Syn: key horizon; index bed; marker be. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
