| Part of Speech | Definition | |
| Expression | 1. (Mining), The layer of rock next overlying ore, generally of barren vein material.[Websters]. | |
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Common Expressions: CAP ROCK
| Expressions | Definition | ||
| Cap rock | (Mining), The layer of rock next overlying ore, generally of barren vein material. Source: Webster's Revised Unabridged Dictionary. | ||
Source: compiled by the editor from various references; see credits. | Top | ||
Specialty Expressions: CAP ROCK
| Expressions | Domain | Definition | |
| Cap rock | Mining | A. Barren vein matter, or a pinch in a vein, supposed to overlie ore. Syn: cap b. A hard layer of rock, usually sandstone, a short distance above a coal seam.c. A disk-like plate over part of or all of the top of most salt domes in the Gulf Coast States and in Germany. It is composed of anhydrite, gypsum, limestone, and sometimes sulfur d. A comparatively impervious stratum immediately overlying an oil- or gas-bearing rock e. Eng. The cap rock of the alum shale, Estuarine sandstones on the Yorkshire coast. (references) | |
| Impermeable cap rock | Geography | A cap rock is a layer of rock of low permeability overlying the aquifer. All steam producing fields have a cap rock. Source: European Union. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
