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...

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 – Subvolcanic rock that contains...

dolerite (/ˈdɒl.əˌraɪt/) or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and...

Lamproite is an ultrapotassic mantle-derived volcanic or subvolcanic rock. It has low CaO, Al2O3, Na2O, high K2O/Al2O3, a relatively high MgO content and...

Archaean and are essentially restricted to the Neoproterozoic or earlier. Subvolcanic ultramafic rocks and dykes persist longer, but are also rare. There is...

Denudation exposes deep subvolcanic structures on the present surface of the area where volcanic activity once occurred. Subvolcanic structures such as volcanic...

Granophyre (/ˈɡrænəfaɪər/ GRAN-ə-fire; from granite and porphyry) is a subvolcanic rock that contains quartz and alkali feldspar in characteristic angular...

due to fracturing. Mt Ngungun consists of subvolcanic rock, also known as a hypabyssal rock, an intrusive rock emplaced at medium-to-shallow depths within...

the surface are termed subvolcanic or hypabyssal rocks and they are usually much finer-grained, often resembling volcanic rock. Hypabyssal rocks are less...

A cone sheet is a type of high-level igneous intrusion of subvolcanic rock, found in partly eroded central volcanic complexes. Cone sheets are relatively...

a large open-cast mine that is mined for subvolcanic rock that is used in road and railroad gravel; this rock was formed from Permian-aged volcanic intrusions...

the area are composed of three types: subvolcanic massifs, ring intrusions and central plutons. The subvolcanic intrusives are similar in geochemistry...

period. The subvolcanic rock that comprises Flute Summit is igneous rock that solidified inside the Late Cretaceous volcano. Subvolcanic rocks can remain...

The crystals are formed by the filling of vesicles in volcanic and subvolcanic rocks by minerals deposited from hydrothermal fluids; or by the dissolution...

the end of the headland of Park Head (grid reference SW840708) is a subvolcanic rock, Diabase. Dark Sky discovery site In 2014, the area was granted "Dark...

both the crystallizing subvolcanic intrusion and the adjacent rocks. The weathering of pyrite crystals inside the subvolcanic rock to iron oxide has resulted...

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 – Subvolcanic rock that contains quartz and alkali feldspar in characteristic angular intergrowths Rock microstructure – Relationship...

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...

This igneous rock-related article is a stub. You can help Wikipedia by expanding it....

describes, in his later works, numerous mountains and hills of volcanic or subvolcanic origin as Kegel ("cone") or Kegelberg ("conical hill/mountain"). The...

Latite is an igneous, volcanic rock, with aphanitic-aphyric to aphyric-porphyritic texture. It is the volcanic equivalent of monzonite. Its mineral assemblage...

result of fumarolic alteration. At the head of Ball Creek valley is a subvolcanic mass of granite with abnormally high soda content that probably intruded...

the plagioclase found in trachyte. Keratophyre forms lava flows and subvolcanic intrusions (dykes and sills). Keratophyre occurs, for example, at Hüttenrode...

2012, retrieved 12 March 2017 "Geochemistry of the alkaline volcanic-subvolcanic rocks of the Fernando de Noronha Archipelago, southern Atlantic Ocean...

older layers of sedimentary rock, beds of volcanic lava or tuff, or along the direction of foliation in metamorphic rock. A sill is a concordant intrusive...

basement rocks on the deeply eroded eastern flank of Mount Edziza are subvolcanic trachyte cupolas, sills, dikes and irregular intrusive masses linked...

Tourmaline-feldspar-quartz rock, Mt. Erongo. This is a schorl tourmaline-rich sample from the Erongo Granite. The Erongo Granite is a subvolcanic ring dike, above...

Rock fragments (xenoliths) carried up from the mantle by magmas containing peridotite have been delivered to the surface as inclusions in subvolcanic...