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 cracks or layers of other rocks. The term is sometimes used as equivalent to {plutonic rocks}. It is then contrasted with effusive or volcanic rocks. -- {In*tru"sive*ly}, adv. -- {In*tru"sive*ness}, n. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • 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 cracks or… …   The Collaborative International Dictionary of English

  • Intrusive Spur — (coord|73|30|S|94|25|W|) is a rock spur along the north front of the Jones Mountains, 1 mile (1.6 km) west of Avalanche Ridge. Mapped by the University of Minnesota Jones Mountains Party, 1960 61. So named by the party because the intrusive… …   Wikipedia

  • intrusive — /ɪnˈtrusɪv/ (say in troohsiv), / zɪv/ (say ziv) adjective 1. intruding. 2. characterised by or involving intrusion: intrusive noise. 3. apt to intrude; coming unbidden or without welcome: intrusive phone calls. 4. violating one s privacy: an… …   Australian English dictionary

  • intrusive — intrusively, adv. intrusiveness, n. /in trooh siv/, adj. 1. tending or apt to intrude; coming without invitation or welcome: intrusive memories of a lost love. 2. characterized by or involving intrusion. 3. intruding; thrusting in. 4. Geol. a.… …   Universalium

  • intrusive — 1. adjective a) Tending or apt to intrude; doing that which is not welcome; interrupting or disturbing; entering without right or welcome. Did it ever cross your mind that he might find all those questions you ask intrusive? b) …   Wiktionary

  • intrusive —    Denoting igneous rocks derived from molten matter (magmas) that invaded pre existing rocks and cooled below the surface of the earth.    Compare: extrusive.    HP …   Glossary of landform and geologic terms

  • intrusive — in•tru•sive [[t]ɪnˈtru sɪv[/t]] adj. 1) tending or apt to intrude; annoying 2) characterized by or involving intrusion 3) intruding; thrusting in 4) gel a) (of a rock) having been forced between preexisting rocks or rock layers while in a molten… …   From formal English to slang

  • intrusive rock — Igneous rock formed from magma forced into older rocks at depths within the Earth s crust, which then slowly solidifies below the Earth s surface, though it may later be exposed by erosion. Igneous intrusions form a variety of rock types. See… …   Universalium

  • 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 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;… …   The Collaborative International Dictionary of English

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