A subvolcanic rock, also known as a hypabyssal rock, is an intrusive igneous rock that is emplaced at depths less than 2 km (1.2 mi) within the crust, and has intermediate grain size and often porphyritic texture between that of volcanic rocks, which are extrusive igneous rocks, and plutonic rocks, which form much deeper in the ground.[1] Subvolcanic rocks include diabase (also known as dolerite) and porphyry. Common examples of subvolcanic rocks are diabase, quartz dolerite, microgranite, and diorite.[2][3]
^"7 Plutons and Plutonic Rocks – Open Petrology". Retrieved 2023-05-15.
^"Examples of rocks with different names". Queensland Museum. Retrieved 12 June 2015.
^"Igneous rock types". Australian Museum. Retrieved 14 June 2015.
A subvolcanicrock, also known as a hypabyssal rock, is an intrusive igneous rock that is emplaced at depths less than 2 km (1.2 mi) within the crust...
medium-grained subvolcanic or hypabyssal rock (typically formed higher in the crust in dikes and sills). Because the solid country rock into which magma...
mafic intrusive rock Granite – Type of igneous rock Granodiorite – Type of coarse grained intrusive igneous rock Granophyre – Subvolcanicrock that contains...
dolerite (/ˈdɒl.əˌraɪt/) or microgabbro, is a mafic, holocrystalline, subvolcanicrock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and...
Lamproite is an ultrapotassic mantle-derived volcanic or subvolcanicrock. It has low CaO, Al2O3, Na2O, high K2O/Al2O3, a relatively high MgO content and...
Denudation exposes deep subvolcanic structures on the present surface of the area where volcanic activity once occurred. Subvolcanic structures such as volcanic...
Archaean and are essentially restricted to the Neoproterozoic or earlier. Subvolcanic ultramafic rocks and dykes persist longer, but are also rare. There is...
the surface are termed subvolcanic or hypabyssal rocks and they are usually much finer-grained, often resembling volcanic rock. Hypabyssal rocks are less...
Granophyre (/ˈɡrænəfaɪər/ GRAN-ə-fire; from granite and porphyry) is a subvolcanicrock that contains quartz and alkali feldspar in characteristic angular...
due to fracturing. Mt Ngungun consists of subvolcanicrock, also known as a hypabyssal rock, an intrusive rock emplaced at medium-to-shallow depths within...
a large open-cast mine that is mined for subvolcanicrock that is used in road and railroad gravel; this rock was formed from Permian-aged volcanic intrusions...
the end of the headland of Park Head (grid reference SW840708) is a subvolcanicrock, Diabase. Dark Sky discovery site In 2014, the area was granted "Dark...
A cone sheet is a type of high-level igneous intrusion of subvolcanicrock, found in partly eroded central volcanic complexes. Cone sheets are relatively...
The crystals are formed by the filling of vesicles in volcanic and subvolcanic rocks by minerals deposited from hydrothermal fluids; or by the dissolution...
peralkaline, and they are represented by subaerial flows and eruptions and subvolcanic porphyry. Generally, the nature of the exposed rocks in Mount Sinai indicates...
of glass. Granophyre – Subvolcanicrock that contains quartz and alkali feldspar in characteristic angular intergrowths Rock microstructure – size, shape...
both the crystallizing subvolcanic intrusion and the adjacent rocks. The weathering of pyrite crystals inside the subvolcanicrock to iron oxide has resulted...
into subvolcanic.[citation needed] The terms lava stone and lava rock are more used by marketers than geologists, who would likely say "volcanic rock" (because...
describes, in his later works, numerous mountains and hills of volcanic or subvolcanic origin as Kegel ("cone") or Kegelberg ("conical hill/mountain"). The...
the plagioclase found in trachyte. Keratophyre forms lava flows and subvolcanic intrusions (dykes and sills). Keratophyre occurs, for example, at Hüttenrode...
Ni-Cu-PGE deposits, where Fe-Ni-Cu sulfide melt accumulates within a subvolcanic feeder dike, sill, or magma chamber. The genetic model of Kambalda-type...
Latite is an igneous, volcanic rock, with aphanitic-aphyric to aphyric-porphyritic texture. Its mineral assemblage is usually alkali feldspar and plagioclase...
2012, retrieved 12 March 2017 "Geochemistry of the alkaline volcanic-subvolcanic rocks of the Fernando de Noronha Archipelago, southern Atlantic Ocean...
basement rocks on the deeply eroded eastern flank of Mount Edziza are subvolcanic trachyte cupolas, sills, dikes and irregular intrusive masses linked...
Rock fragments (xenoliths) carried up from the mantle by magmas containing peridotite have been delivered to the surface as inclusions in subvolcanic...
which intrude the Musgrave Block. These are of the ~1050 Ma age, and are subvolcanic, possibly related to some of the ~1050 Ma volcanic rocks. The Palgrave...
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