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- Intrusion abstract "An intrusion is liquid rock that forms under Earth's surface. Magma from under the surface is slowly pushed up from deep within the earth into any cracks or spaces it can find, sometimes pushing existing country rock out of the way, a process that can take millions of years. As the rock slowly cools into a solid, the different parts of the magma crystallize into minerals. Many mountain ranges, such as the Sierra Nevada in California, are formed mostly by intrusive rock, large granite (or related rock) formations.Intrusions are one of the two ways igneous rock can form; the other is extrusive, that is, a volcanic eruption or similar event. Technically speaking, an intrusion is any formation of intrusive igneous rock; rock formed from magma that cools and solidifies within the crust of the planet. In contrast, an extrusion consists of extrusive rock; rock formed above the surface of the crust.Intrusions vary widely, from mountain-range-sized batholiths to thin veinlike fracture fillings of aplite or pegmatite. When exposed by erosion, these cores called batholiths may occupy huge areas of Earth's surface. Large bodies of magma that solidify underground before they reach the surface of the crust are called plutons.Coarse-grained intrusive igneous rocks that form at depth within the earth are called abyssal while those that form near the surface are called hypabyssal. Intrusive structures are often classified according to whether or not they are parallel to the bedding planes or foliation of the country rock: if the intrusion is parallel the body is concordant, otherwise it is discordant.A well-known example of an intrusion is Devils Tower.".
- Intrusion thumbnail A_Yool_DevilsTower_04Sep03_exif.jpg?width=300.
- Intrusion wikiPageID "1106531".
- Intrusion wikiPageRevisionID "590261038".
- Intrusion hasPhotoCollection Intrusion.
- Intrusion subject Category:Igneous_petrology.
- Intrusion subject Category:Intrusions.
- Intrusion subject Category:Volcanology.
- Intrusion comment "An intrusion is liquid rock that forms under Earth's surface. Magma from under the surface is slowly pushed up from deep within the earth into any cracks or spaces it can find, sometimes pushing existing country rock out of the way, a process that can take millions of years. As the rock slowly cools into a solid, the different parts of the magma crystallize into minerals.".
- Intrusion label "Intrusie (geologie)".
- Intrusion label "Intrusion (Geologie)".
- Intrusion label "Intrusion (géologie)".
- Intrusion label "Intrusion".
- Intrusion label "Intrusión (geología)".
- Intrusion label "Intrusão".
- Intrusion label "Intruzja".
- Intrusion label "Rocce intrusive".
- Intrusion label "Интрузия".
- Intrusion label "استرساب".
- Intrusion sameAs Intruze.
- Intrusion sameAs Intrusion_(Geologie).
- Intrusion sameAs Intrusión_(geología).
- Intrusion sameAs Intrusio.
- Intrusion sameAs Intrusion_(géologie).
- Intrusion sameAs Intrusi_(geologi).
- Intrusion sameAs Rocce_intrusive.
- Intrusion sameAs Intrusie_(geologie).
- Intrusion sameAs Intruzja.
- Intrusion sameAs Intrusão.
- Intrusion sameAs m.046j6d.
- Intrusion sameAs Q212895.
- Intrusion sameAs Q212895.
- Intrusion wasDerivedFrom Intrusion?oldid=590261038.
- Intrusion depiction A_Yool_DevilsTower_04Sep03_exif.jpg.
- Intrusion isPrimaryTopicOf Intrusion.
