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203:. Magma then cooled into solid rock, different from the surrounding country rock. Sometimes, a fragment of country rock will break off and become incorporated into the intrusion, and is called a
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Magma is typically less dense than the rock it intrudes, widening and filling existing cracks, sometimes melting the already-existing country rock.
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The term "country rock" is similar to, and in many cases interchangeable with, the terms
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of a region in relation to the rock which is being discussed or observed.
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The heat of the intrusions usually changes the country rock, often to
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action can be described as a veneer on the (older) country rock.
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When country rock is intruded by a dike, perpendicular to the
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400:"BATHOLITH…, LOPOLITH…, SILL OR DIKE? – INTRUSIONS (2)"
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Patricia L. Barnes-Svarney; Thomas E. Svarney (2004).
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of rock which formed when magma forced upward through
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23:Rock types native to a specific area
423:"Intrusive Igneous Rock Structures"
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137:Settings in geology when the term
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290:"Country rock - encyclopedia.com"
314:Earle, Steven (September 2015).
172:while a parallel intrusion by a
379:. Geofísica Internacional. 2008
351:. Visible Ink Press. pp.
318:. 3.5 Intrusive Igneous Bodies
316:"3.5 Intrusive Igneous Bodies"
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347:The Handy Geology Answer Book
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338:Glossary of Geological Terms
70:geologic material, commonly
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340: Accessed June 2018.
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398:Granyia (June 6, 2017).
238:contact metamorphic rock
42:" are country rock. The
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170:discordant intrusion,
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182:concordant intrusion
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223:, "strange,", and
149:When describing a
145:Igneous intrusions
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402:. Volcano Hotspot
362:978-1-57859-156-5
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296:16 December
46:leads to a
276:References
120:wall rocks
80:salt domes
40:Ordovician
197:fractures
127:lithology
84:sediments
76:rock salt
473:Category
262:volcanic
258:alluvium
242:hornfels
206:xenolith
116:basement
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32:Devonian
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270:fluvial
266:glacial
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68:viscous
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231:lithos
151:pluton
105:Alaska
479:Rocks
426:(PDF)
246:skarn
226:λίθος
221:xenos
216:ξένος
211:Greek
189:magma
72:magma
459:2018
434:2018
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385:2018
357:ISBN
324:2018
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174:sill
155:dike
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