cap rock

cap rock
noun
: cap I 2a(3)

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Geol.
1. a mass of anhydrite, gypsum, or limestone immediately above the salt of a salt dome.
2. an impervious stratum overlying an oil- or gas-bearing structure.
Also, caprock.
[1865-70, Amer.]

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cap rock noun
A stratum of (usu impervious) rock overlying oil- or gas-bearing strata
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Main Entry:cap

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cap rock,
any one of several types of overlying strata, especially a layer of shale, limestone, or other material lying over and sealing in deposits, especially of petroleum and natural gas: »

A cap rock must be practically impermeable to oil or gas (Gilluly, Waters, and Woodford).

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n. a layer of hard, impervious rock overlying and often sealing in a deposit of oil, gas, or coal

Useful english dictionary. 2012.

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Look at other dictionaries:

  • Cap rock — Cap Cap (k[a^]p), n. [OE. cappe, AS. c[ae]ppe, cap, cape, hood, fr. LL, cappa, capa; perhaps of Iberian origin, as Isidorus of Seville mentions it first: Capa, quia quasi totum capiat hominem; it. capitis ornamentum. See 3d {Cape}, and cf. 1st… …   The Collaborative International Dictionary of English

  • cap-rock — ● cap rock, cap rocks nom masculin (anglais cap rock, de cap, coiffe, et rock, roche) Formation résultant de l hydratation ou de la dissolution de la partie supérieure d un dôme de sel (diapir) et aboutissant à un mélange de blocs prélevés sur… …   Encyclopédie Universelle

  • cap rock — cap′ rock or cap′rock n. gel a mass of anhydrite, gypsum, or limestone immediately above the salt of a salt dome • Etymology: 1865–70, amer …   From formal English to slang

  • cap rock — n. a relatively impervious rock layer immediately overlying a deposit of oil, gas, salt, etc …   English World dictionary

  • Cap Rock Escarpment — Sp Kalnų Uolýno skardis Ap Cap Rock Escarpment L JAV (Teksasas) …   Pasaulio vietovardžiai. Internetinė duomenų bazė

  • cap rock — /ˈkæp rɒk/ (say kap rok) noun a layer of relatively hard or impervious rock which lies over some valuable deposit, as coal or an oil bearing rock. Also, caprock …  

  • cap rock — Geol. 1. a mass of anhydrite, gypsum, or limestone immediately above the salt of a salt dome. 2. an impervious stratum overlying an oil or gas bearing structure. Also, caprock. [1865 70, Amer.] * * * …   Universalium

  • cap rock —    See caprock …   Glossary of landform and geologic terms

  • Cap — (k[a^]p), n. [OE. cappe, AS. c[ae]ppe, cap, cape, hood, fr. LL, cappa, capa; perhaps of Iberian origin, as Isidorus of Seville mentions it first: Capa, quia quasi totum capiat hominem; it. capitis ornamentum. See 3d {Cape}, and cf. 1st {Cope}.] 1 …   The Collaborative International Dictionary of English

  • Cap in hand — Cap Cap (k[a^]p), n. [OE. cappe, AS. c[ae]ppe, cap, cape, hood, fr. LL, cappa, capa; perhaps of Iberian origin, as Isidorus of Seville mentions it first: Capa, quia quasi totum capiat hominem; it. capitis ornamentum. See 3d {Cape}, and cf. 1st… …   The Collaborative International Dictionary of English

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