Subvolcanic rock
Multi tool useA subvolcanic rock, also known as a hypabyssal rock, is an intrusive igneous rock that is emplaced at medium to shallow depths (>2 km) within the crust, and has intermediate grain size and often porphyritic texture between that of volcanic and plutonic rocks. Subvolcanic rocks include diabase (also known as dolerite) and porphyry.
Common examples of subvolcanic rocks are diabase, quartz-dolerite, micro-granite and diorite.[1][2]
See also
References
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^ "Igneous rock types - Australian Museum". Retrieved 14 June 2015.
Common igneous rocks classified by silicon dioxide content
|
|---|
| Type |
Ultramafic
<45% SiO2 |
Mafic
45–52% SiO2 |
Intermediate
52–63% SiO2 |
Intermediate–felsic
63–69% SiO2 |
Felsic
>69% SiO2 | Volcanic rocks:
Subvolcanic rocks:
Plutonic rocks:
| | Basalt
Diabase (Dolerite)
Gabbro
| Andesite
Microdiorite
Diorite
| Dacite
Microgranodiorite
Granodiorite
| Rhyolite
Microgranite
Granite
|
|
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