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intrusion
(redirected from Intrusive Rock)

   Also found in: Dictionary/thesaurus, Legal, Encyclopedia, Wikipedia 0.01 sec.
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.


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The mapping showed areas of intrusive rocks “similar to those found in the California District.
Intrusive rocks of the Coldwell Complex revealed high grade mineral zones of copper, gold, palladium and platinum and other metals.
The Twilight Zone breccia and San Pedro breccia are mineralized zones within and adjacent to granodiorite igneous rocks, thus there is an important relationship between the sedimentary rocks, veins, breccias and intrusive rocks at Vianey Mine.
 
 
 
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