Plutonic rocks

Plutonic rocks
Plutonic Plu*ton"ic, a. [Cf. F. plutonique. See {Pluto}.] 1. Of or pertaining to Pluto; Plutonian; hence, pertaining to the interior of the earth; subterranean. [1913 Webster]

2. Of, pertaining to, or designating, the system of the Plutonists; igneous; as, the Plutonic theory. [1913 Webster]

{Plutonic action} (Geol.), the influence of volcanic heat and other subterranean forces under pressure.

{Plutonic rocks} (Geol.), granite, porphyry, and some other igneous rocks, supposed to have consolidated from a melted state at a great depth from the surface. Cf. {Intrusive rocks}, under {Intrusive}.

{Plutonic theory}. (Geol.) See {Plutonism}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • plutonic rocks — Intrusive In*tru sive, a. Apt to intrude; characterized by intrusion; entering without right or welcome. [1913 Webster] {Intrusive rocks} (Geol.), rocks which have been forced, while in a plastic or melted state, into the cavities or between the… …   The Collaborative International Dictionary of English

  • Plutonic — Plu*ton ic, a. [Cf. F. plutonique. See {Pluto}.] 1. Of or pertaining to Pluto; Plutonian; hence, pertaining to the interior of the earth; subterranean. [1913 Webster] 2. Of, pertaining to, or designating, the system of the Plutonists; igneous; as …   The Collaborative International Dictionary of English

  • Plutonic action — Plutonic Plu*ton ic, a. [Cf. F. plutonique. See {Pluto}.] 1. Of or pertaining to Pluto; Plutonian; hence, pertaining to the interior of the earth; subterranean. [1913 Webster] 2. Of, pertaining to, or designating, the system of the Plutonists;… …   The Collaborative International Dictionary of English

  • Plutonic theory — Plutonic Plu*ton ic, a. [Cf. F. plutonique. See {Pluto}.] 1. Of or pertaining to Pluto; Plutonian; hence, pertaining to the interior of the earth; subterranean. [1913 Webster] 2. Of, pertaining to, or designating, the system of the Plutonists;… …   The Collaborative International Dictionary of English

  • plutonic — /plooh ton ik/, adj. Geol. noting or pertaining to a class of igneous rocks that have solidified far below the earth s surface. [1790 1800; < L Pluton (s. of Pluto Pluto < Gk Ploúton) + IC; orig. referring to the Plutonic theory (see PLUTONISM)]… …   Universalium

  • plutonic —    Pertaining to igneous rocks formed at great depth, but also including associated metamorphic rocks.    GG …   Glossary of landform and geologic terms

  • PLUTONIC THEORY —    the theory that unstratifled rocks were formed by fusion in fire …   The Nuttall Encyclopaedia

  • plutonic — /pluˈtɒnɪk/ (say plooh tonik) adjective 1. Geology denoting a class of igneous rocks which have solidified far below the earth s surface. 2. (sometimes upper case) → plutonian …  

  • Intrusive rocks — Intrusive In*tru sive, a. Apt to intrude; characterized by intrusion; entering without right or welcome. [1913 Webster] {Intrusive rocks} (Geol.), rocks which have been forced, while in a plastic or melted state, into the cavities or between the… …   The Collaborative International Dictionary of English

  • Effusive rocks — effusive ef*fu sive, a. 1. Pouring out; pouring forth freely. [archaic] Washed with the effusive wave. Pope. [1913 Webster] 2. (Geol.) formed by an outpouring of molten lava, or pertaining to rocks so formed. [PJC] 3. overly demonstrative;… …   The Collaborative International Dictionary of English

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