- layered intrusion
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a large body of igneous rock within which distinct stratification continues over many miles
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layered intrusion
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Muskox intrusion — Geologic map of the Muskox intrusion and adjacent geologic groups The Muskox intrusion is a layered intrusion in Nunavut, Canada. It is located 144 km (89 mi) northeast of Great Bear Lake and 90 km (56 mi) south of Kugluktuk… … Wikipedia
Ultramafic to mafic layered intrusions — are found in typically ancient cratons and are rare but worldwide in distribution. The intrusive complexes exhibit evidence of fractional crystallization and crystal segregation by settling or floating of minerals from a melt. Ideally the… … Wikipedia
Skaergaard intrusion — The Skaergaard intrusion is a layered gabbro complex in East Greenland, located at coord|68.1683|N|31.7169|W|.Discovered by Lawrence Wager [Brooks, CK (2005) The Skaergaard intrusion: from icon to precious metal deposit . Geology Today, v. 21, p … Wikipedia
Windimurra intrusion — The Windimurra Intrusion is a giant ultramafic mafic intrusion emplaced within the Yilgarn craton of Western Australia. It is located approximately 100 kilometres south east of the town of Mount Magnet.ettingWindimurra is a conical sheet like… … Wikipedia
Cumulate rock — Cumulate rocks are igneous rocks formed by the accumulation of crystals from a magma either by settling or floating. Cumulate rocks are named according to their texture; cumulate texture is diagnostic of the conditions of formation of this group… … Wikipedia
Narryer Gneiss Terrane — Stratigraphic range: > 3.3 Ga Satellite image of Jack Hills in the Narryer Gneiss Terrane Type Geological complex Sub units … Wikipedia
Stillwater igneous complex — The Stillwater igneous complex is a large ultramafic to mafic layered intrusion located in southern Montana in Stillwater, Sweet Grass and Park Counties. The complex is exposed across 30 miles (48 km) of the north flank of the Beartooth Mountain… … Wikipedia
Gabbro — (pronEng|ˈɡæbrəʊ) is a dark, coarse grained, intrusive igneous rock chemically equivalent to basalt. It is a plutonic rock, formed when molten magma is trapped beneath the Earth s surface and cools into a crystalline mass. The vast majority of… … Wikipedia
Troctolite — is a rare ultramafic intrusive rock type. It consists essentially of variable amounts of olivine and calcic plagioclase along with variable minor pyroxene. It thus is midway between peridotite and anorthosite.Troctolite is found in some… … Wikipedia
Harzburgite — The ultramafic rock, harzburgite, is a variety of peridotite consisting mostly of the two minerals, olivine and low calcium (Ca) pyroxene (enstatite); it is named for occurrences in the Harz Mountains of Germany. It commonly contains a few… … Wikipedia
