intrusion

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Related to Intrusive Rock: Intrusive igneous rock

intrusion

[in·tro̅o̅′zhən]
Etymology: L, intrudere, to push or force in
an orthodontic technique of depressing a tooth back into the occlusal plane or attempting to prevent its eruption or elongation during correction of an excessive overbite. Compare extrusion (def. 3).

intrusion,

n a depression; an inward projection.

intrusion

an orthodontic procedure in which a tooth is made to move further into the alveolus.
References in periodicals archive ?
In the summer of 2000, the discovery of massive sulfides in ultramafic intrusive rocks located north of Minto Lake (Qullinaaraaluk Ni-Cu-Co showing; Labbe et al.
Hinterland's Sakami claims are underlain mainly by basalt meta-volcanic rocks in contact with tonalite intrusive rocks, and cover a 5.
Sheeted magnetite veins in intrusive rocks have been discovered up to 1.
Regional aeromagnetic data suggest that the East Spruce Project lies on the margin of a large buried intrusion that is part of a northeast alignment of intrusive rocks that extends 90 mi (150 km) from the Bald Mountain Mining District, located to the southwest, through the new Pequop (Long Canyon) Mining District to the northeast and farther northeast to the Tecoma (gold) District.
Short Description: Productive thickness of the deposit is made up of uniform chemical and petrographic composition intrusive rocks - biotite-corniferous granites.
Gold mineralization is found in skarn material associated with intrusive rocks and within veins hosted by both intrusive and sedimentary rocks.
The drill program was designed to gain a better understanding of the recently discovered gold mineralization at Clam Lake hosted by strongly silicified and brecciated intrusive rocks, associated with an east-west trending subsurface apparent resistivity anomaly.
The recognition of the geological contact between the intrusive rocks and the sedimentary rocks has important implications for regional prospecting.
The Property is underlain by rocks of the Proterozoic Wollaston Domain comprising ortho- and paragneisses, including Archean gneissic domes (basement) and minor younger intrusive rocks including abundant pegmatite bodies.
The Hazelton Group rocks are variably fractured and are hornfelsed on the contact with the intrusive rocks.
Cardelena hosts the same Laramide age intrusive rocks and Cretaceous andesitic volcanic rocks as at Suaqui Verde and Adriana that have yet to be explored systematically for porphyry copper mineralization.
The Neon property was staked as an initial result of a Miranda generative program designed to secure gold exploration targets that can be generally characterized as quartz-tourmaline-gold systems related to intrusive rocks.