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This Review contains major "Igneous Rock"- related terms, short phrases and links grouped together in the form of Encyclopedia article.
- Igneous rock is the first kind of rock.
- Igneous rock is formed by magma or lava (molten rock) cooling and becoming solid.
- Igneous rock is rock formed by the hardening and crystallization of molten material that originates deep within the earth.
- Igneous rock are classified according to mode of occurrence, texture, mineralogy, chemical composition, and the geometry of the igneous body.
- Igneous rock (etymology from Latin ignis, fire) is one of the three main rock types (the others being sedimentary and metamorphic rock).
- Scoria is a dark-colored, vesicular, extrusive igneous rock.
- Dacite is an extrusive igneous rock.
- Obsidian Obsidian is a type of naturally-occurring glass formed as an extrusive igneous rock.
- Igneous rock originates from the cooling and solidification of molten matter from the earth's interior.
- I. Igneous Rock Definition - rocks formed by the cooling and solidification of magma.
- Igneous rock is rock formed by solidification from molten magma.
- Granodiorite is a plutonic igneous rock, formed by an intrusion of silica-rich magma, which cools in batholiths or stocks below the Earth's surface.
- Any plutonic igneous rock with very low silica content.
- Aplite, which is a fine-grained igneous rock with the same mineralogical composition as granite, also is mined frequently for its feldspar content.
- Chiefly British A dark, fine-grained igneous rock; diabase.
- Basalt - A fine-grained igneous rock of mafic composition.
- Large accumulations such as this form the igneous rock dunite, or when mixed with pyroxene, peridotite.
- Peridotite is a dark-colored, coarse-grained igneous rock believed by many scientists to be the primary rock of the exterior of Earth's mantle.
- Peridotite is an intrusive igneous rock with an ultrabasic composition.
- Similar to gabbro, norite is a type of coarse-grained igneous rock found on both the moon and the Earth.
- Granite is a coarse-grained igneous rock of even texture and light color, composed chiefly of quartz and feldspars.
- The last sample at this station is pegmatitic granite (Station 3C). A Pegmatite is a very coarse-grained igneous rock, typically granite.
- Examples of aphanitic igneous rock include basalt, andesite and rhyolite.
- Basalt (an extrusive igneous rock in this case); light colored tracks show the direction of lava flow.
- Extrusive igneous rocks Basalt (an extrusive igneous rock in this case); light colored tracks show the direction of lava flow.
- An Extrusive igneous rock cools very fast on the surface and is created by lava.
- All three types of rocks may be re-melted; when this happens, a new magma is formed, from which an igneous rock may once again crystallize.
- Granite is a plutonic igneous rock.
- The magma that cools while still buried under the cooler earth crust is plutonic igneous rock.
- Geology. Irregular dark or light streaks in plutonic igneous rock that differ in composition from the principal mass.
- The depths of these igneous rock bodies closely corresponds to the depth of the seismic activity.
- Encyclopedia For "acid rock" as a geologic term, see Igneous rock.
- Dike: A vertical or angled layer of igneous rock that cuts across other rock layers, usually by injection into fractures.
- It is observed in some igneous rock s and iron ore deposits as the result of the alteration of ilmenite, perovskite, or titanite.
- Crystal shape is also an important factor in the texture of an igneous rock.
- Type of igneous rock that is abundant in western North America.
- It is primarily important as a rock-forming mineral, however, and is abundant in igneous rock s, pegmatite s, and gneiss es.
- Abundant and widespread, the intrusive igneous rock may be found in tremendous masses in many mountainous areas.
- These processes move rock material through the states of metamorphic rock, igneous rock, sedimentary rock, melts and sediment.
- Uses of the Rock Cycle The rock cycle shows how igneous rock may be eroded and transported as fragments and dissolved sediment.
- Usually black or dark green, occurring in igneous rock such as basalt.
- Pumice is a light, porous type of pyroclastic igneous rock.
- List the different igneous rock textures (aphanitic, phaneritic, porphyritic, pegmatitic, vesicular, glass, and pyroclastic) and explain their origins.
- This term refers to vesicles (holes, pores, or cavities) within the igneous rock.
- After total crystallization of the liquid, a hard, dense igneous rock is the result.
- A peridotite is a dense, coarse-grained igneous rock, consisting mostly of the minerals olivine and pyroxene.
- Basalt is an extrusive igneous rock, sometimes porphyritic, and is often both fine-grained and dense.
- Type of igneous rock composed predominantly of calcium-rich feldspar.
- Hornblendite - A coarse grained igneous rock composed solely or predominantly of hornblende.
- Pyroxenite - Pyroxenite is a type of intrusive igneous rock that is predominantly composed of pyroxenes.
- An igneous rock, usually a dike or sill, with larger, generally conspicuous, early-formed crystals contained within a matrix of much smaller crystals.
- Phenocryst: A conspicuous, usually large, crystal embedded in porphyritic igneous rock.
- A type of igneous rock that is formed when molten magma from a volcano hardens.
- Andesite is a type of igneous rock that is found in most volcanic regions of the world, especially around volcanoes that line the Pacific Basin.
- When volcanoes erupt and the liquid rock comes up to the earth's surface, then new igneous rock is made.
- Rock that erupted from volcanoes and cooled on the surface is called extrusive igneous rock.
- Granite is an igneous rock, because it formed as melted rock cooled and hardened.
- Granite is a very common igneous rock, which means it formed from other melted rock that cooled and hardened slowly below the earth's surface.
- Basalt is an extrusive, mafic (contains a high amount of magnesium and iron) igneous rock.
- Water draining from igneous rock will contain most of the common metals, such as magnesium, calcium, sodium and potassium, but usually only in small amounts.
- Basalt is an extrusive igneous rock that is low in silica content, dark in color, and comparatively rich in iron and magnesium.
- Dark igneous rock that is low in silica content and comparatively rich in iron and magnesium.
- Description A fine grained (aphanitic) igneous rock, medium to dark in color.
- Gabbro is a dark, coarse-grained, intrusive igneous rock chemically equivalent to basalt because it shares a common origin, magma, with basalt.
- Obsidian is an example of another extrusive igneous rock that cooled so fast that it has no crystals and looks like shiny, black glass.
- Amygdule refers to a mineral containing cavity in an igneous rock formed by escaping gas.
- Aggregates are made from either crushed rock (limestone, dolomite, quartzite, sandstone, igneous rock and some others) or sand and gravel.
- Almost all the road cuts in San Francisco: sandstone, shale, chert, dark igneous rock, serpentine date to the Jurassic.
- The rock here is mostly peridotite, a coarse grained igneous rock, kept from melting by extremely high lithostatic pressures.
- So even beginning with a shale, and metamorphosing and melting it completely we get a felsic igneous rock.
- An igneous rock such as basalt may break down and dissolve when exposed to the atmosphere, or melt as it is subducted under a continent.
- The protolith may be sedimentary rock, igneous rock or another older metamorphic rock.
- The protolith might be an igneous rock, a sedimentary rock, or another metamorphic rock.
- A mass of igneous rock intruded between layers of sedimentary rock, resulting in uplift.
- It is made of igneous rock and formed at mid-ocean ridges, the largest volcanic system on our planet, from melting in the mantle.
- Magma from the mantle entered the space that separated the two sides, forming igneous rock that, with sediments, filled the widening gap.
- The continental crust consists of lower density material such as the igneous rock s granite and andesite.
- Granite is a plutonic igneous rock containing a high proportion of silica.
- Granite - A coarse-grained intrusive igneous rock consisting of quartz, feldspar and mica.
- Granite - A granular igneous rock composed essentially of quartz, feldspar, and mica.
- Domed strata above a laccolith may be exposed at the surface before erosion cuts down far enough to expose the igneous rock.
- Rocks which are now on top are exposed to erosion and weathering and are strewn loosely over the igneous rock.
- Granite, for example, is a type of igneous rock that commonly breaks down in weathering to produce sand grains that later make up sandstone.
- Residual flake vermiculite originated from the iron-rich mineral biotite in igneous rock, then processes of alteration and weathering created vermiculite.
- Intrusion: A igneous rock body that formed from magma that forced its way into, through or between subsurface rock units.
- Intrusion of crystalline igneous rock and regional uplift along the axis of the trough generally complete the history of a particular geosyncline.
- Intrusion: An igneous rock body that has forced its way in a molten state into surrounding country rock.
- By contrast, geologists often refer to igneous rock with amphibole as hornblendite.
- Geologists classify granite as an igneous rock.
- Geology. Of or relating to igneous rock that is forced while molten into cracks or between other layers of rock.
- In geology, any igneous rock dominated by the silicates pyroxene, amphibole, olivine, and mica.
- In geology a cumulate is an igneous rock formed by the accumulation of crystals from a magma.
- Syenite is a type of intrusive igneous rock that is similar in appearance and composition as granite.
- An igneous rock, usually irregular in texture and composition.
- Its composition is thought to be similar to peridotite, an igneous rock of mostly magnesium-rich silicate.
- Culture > Arts > Music > Rock
* Chemical Composition
* Cooling Magma
* Grain Size
* Igneous Rocks
* Igneous Rock Basalt
* Igneous Rock Forms
* Igneous Rock Texture
* Intrusive Igneous Rock
* Intrusive Igneous Rocks
* Intrusive Rock
* Larger Crystals
* Large Mass
* Magma Chamber
* Metamorphic Rock
* Metamorphic Rocks
* Mineral Composition
* Molten Rock
* Molten State
* Plagioclase Feldspar
* Plagioclase Feldspars
* Rapid Cooling
* Sedimentary Rocks
* Surrounding Rock
* Surrounding Rocks
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