igneous In A Sentence
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- Volcanic activity has formed highly permeable subterranean layers within the fragmented igneous lava.
- Intrusive igneous rock originates from adjacent slopes ( most of those being tan-colored feldspar-rich syenite ).
- In geology, "'macrocrystalline "'intrusive igneous rocks which cooled slowly enough for crystal growth.
- Cassiterite is a widespread minor constituent of igneous rocks.
- The town is named for rhyolite, an igneous rock composed of light-colored silicates, usually Beatty, gets its name from the Spanish word for " bitter ", " amargo ".
- The standard size classification for large igneous provinces is a minimum areal extent of.
- A usually coarse - grained igneous rock composed chiefly of calcic plagioclase and pyroxene.
- The answer to the question was that they were derived from igneous rocks.
- A petrologic boundary, it separates the deeper, mafic igneous rock of the Central Pacific Basin from the partially submerged continental areas of felsic igneous rock on its margins.
- The predominant igneous rock is porphyritic hornblende diorite.
- The assemblage is not a perfectly homogeneous one but includes both igneous and sedimentary rocks, but the former preponderate.
- Trap rock is a form of plutonic igneous rock.
- In areas are metamorphic rocks Palaeozoic granitic and igneous intrusions.
- The presence of melilite is an essential constituent in some rare igneous rocks, such as olivine melilitite.
- The earliest signs of igneous activity in Africa are to be found in the granites, intrusive into the older rocks of the Cape peninsula, into those of the Transvaal, and into the gneisses and schists o
- This molten rock magma then cools and crystallizes, forming igneous rocks.
- The LIP ( large igneous province ) is the best exhibition when the.
- There is also a tendency for metasomatism between the igneous magma and sedimentary country rock, whereby the chemicals in each are exchanged or introduced into the other.
- It grows in Eurasia, and North America on siliceous rock, schist or igneous rock in habitats exposed to sunlight, also rarely on calciferous rock.
- Where the schists of sedimentary origin have been pierced by these igneous intrusions, they are charged with contact minerals such as sillimanite, cordierite, kyanite and andalusite.
- Since silicate melts and aluminosilicate melts are the main components of naturalmagma, the study of their structure is very important to exploring the properties ofmagma and the igneous processes.
- The igneous rocks occur at several geological horizons, but the great volcanic eruptions did not begin until the Tertiary period.
- In describing the physical properties of igneous rocks and the minerals that compose them, their texture and acidity were mentioned.
- Distinctly developed crystals are rare, the mineral being usually found as foliated masses embedded in the igneous rocks norite and hypersthene-andesite, of which it forms an essential constituent.
- Bornhardts are typically composed of igneous rocks, for example granites.
- Dolerite intrusive igneous rock granophyre, known as Ercallite forms the northeastern shoulder of the Ercall.
- A similar situation with igneous rocks occurs when xenoliths are found.
- Along the southwest and west margins of the province are extrusive igneous deposits that tend to diminish the hydrocarbon potential of these areas.
- The igneous rock and metamorphic rock used in the construction came from Canada.
- In the US the main kaolin deposits are found in central igneous and metakaolin rocks.
- Her areas of interest and expertise are in isotope geochemistry, igneous and metamorphic petrology, mineralogy and crystallography, tectonics, inorganic geochemistry, geochronology and geochemistry.
- The Cainozoic series includes many igneous rocks.
- Quartz occurs as a primary and essential constituent of igneous rocks of acidic composition such as granite, quartz-porphyry and rhyolite, being embedded in these either as irregularly shaped masses o
- The earth movements associated with the orogeny triggered an extensive igneous activity.
- Such gaps in the igneous or metamorphic rocks.
- In igneous rocks, the potassium-argon ' clock ' is set the moment the rock first crystallizes from magma.
- Igneous rocks do not contain fossils.
- It was made of igneous rock essentially, rock formed from cooled molten lava.
- They are halfway between an igneous and metamorphic rock.
- The rolled crystals of sapphire occur, with garnet and other minerals, in glacial deposits, and have probably been derived from dykes of igneous rocks, like andesite and lamprophyre.
- On the rocky banks are apparent types of the igneous rock that reveal granite.
- Bylot Island lies off the northern end of Baffin Island and with an area of, it is ranked igneous crystalline rock and Proterozoic metasedimentary and metamorphic rock, such as gneiss.
- Some of the igneous intrusions have the shapes of laccoliths.
- Water in the WMA comes from natural springs and artesian wells beneath the igneous rock.
- Its crystalline structure formed inside a bubble of volcanic gas as igneous rock cooled.
- The Great Dyke of Zimbabwe is a layered mafic intrusion of igneous, metal-bearing rock that has been dated to approximately 2.5 billion years old.
- To the east of the dislocation of the Great Glen these puzzling rocks may also be met with, though in that tract most of the surface comprises sedimentary and igneous rocks, the metamorphism of which
- The whole group is abundantly watered, and the igneous soil is marvellously fertile.
- It's porphyry, an igneous rock.
- This sediment uplift was accompanied by igneous intrusions and volcanism.
- The northern coast range is formed by the oldest rocks in the island, consisting chiefly of limestones and marbles with occasional masses of igneous rock.
- The " "'Journal of Petrology " "'is a monthly peer-reviewed academic journal focused on the field of igneous and metamorphic petrology and petrogenesis.
- Furthermore, the lunar orbiters confirmed that the highlands of the moon are dominated by anorthosite, an igneous rock composed primarily of the mineral feldspar and rich in calcium and aluminum.
- The igneous formation of which the greater part of the Roman Campagna is, in its superior portion, composed, contains three strata known under the common name of tufa, - the ' stony,' ' granular,' and
- Another significant component of the crust are the igneous " Mg-suite " rocks, such as the troctolites, norites, and KREEP-basalts.
- Tuff can be classified as either sedimentary or igneous rocks.
- He authored eighty technical papers and six textbooks on metamorphic, igneous, and structural petrology.
- Minor igneous intrusions, deformation ( folding and faulting ) and subsequent metamorphism of the Aravalli Mountains represent the main phase of orogenesis.
- It consists chiefly of elaeolite-syenite and other rocks derived from the same igneous magma.
- Another group of phosphatic deposits connected with igneous rocks comprises the apatite veins of south Norway, Ottawa and other districts in Canada.
- Igneous petrology has been my favorite topic for over 5 years.
- Troctolite is also found in the Merensky Reef of the Bushveld igneous Complex, South Africa and in the Lizard complex in Cornwall.
- A "'phanerite "'is an igneous rock whose texture forms when magma deep underground in the plutonic environment cools slowly, giving the crystals time to grow.
- Characteristic is the appearance of various igneous and metamorphic rocks in interesting structural relationships.
- The noble gas in the igneous glass and mantle xenoliths is an effective tracer for the earth information(sentence dictionary), and the research in this field has been developed very fast recently.
- Six mineral zones have been delineated in the thermal aureole formed by the post-tectonic Strath Ossian igneous Complex.
- He says, everybody can hide below desk, igneous opportunity is viewed inside blacker drawer umbriferous.
- They occur (a) in crystalline igneous and metamorphic rocks as an original constituent, (b) in veins associated with igneous rocks, and (c) in sedimentary rocks either as organic fragments or in secon
- Which are these hills of igneous rocks?.
- He coined the term " laccolite " ( now laccolith ) to describe the characteristic shapes of some of the igneous intrusions that core the mountains.
- Sparta is in the Highlands which is composed of igneous and metamorphic rock.
- The largest known primary reserves are in the Bushveld igneous complex in South Africa, though the large copper-nickel deposits near alluvial deposits.
- Igneous and metamorphic rocks.
- Ultrapotassic, ultramafic igneous rocks such as lamprophyre, lamproite and kimberlite are known to have reached the surface of the Earth.
- "' Variolites "'are mafic, igneous, and typically volcanic German name for a type of variolite . " Gamaicu " is a local South American name for a type of variolite.
- The noble gas in the igneous glass and mantle xenoliths is an effective tracer for the earth information, and the research in this field has been developed very fast recently.
- The same structural features, sometimes less easily recognized, are found in igneous and metamorphic rocks.
- By definition rock formed of solidified magma is called igneous rock.
- Granite is one of the hardest types of igneous rock.
- She began to sing about the differing properties of igneous, metamorphic and sedimentary rocks.
- The Mount Weld carbonatite is unassociated with a belt or suite of alkaline igneous rocks, although calc-alkaline magmas are known in the region.
- Intrusive forms include laccoliths, Ages of the igneous rocks range from 70 to 74 million years.
- Since the specimens have become dry, it is rather more easy to distinguish the decomposed igneous rocks from the sedimentary tuffs.
- At a later time, according to Hutton, subterranean heat may produce an intrusion of igneous rock.
- Orbicular granite - this igneous rock has an unusual orbicular granite - this igneous rock has an unusual orbicular structure that is sometimes seen in granites and diorites.
- Granite is the hard course igneous rock.
- Common mineral associates in igneous rocks include olivine, pyroxenes, amphiboles and magnetite.
- As regards igneous rocks, the Charnwood Forest quarries of Leicestershire, and those of Cornwall, are particularly noted for their granite.
- The sand grains are weathered igneous rocks like granite.
- The natural remanent magnetization of an igneous rock can be altered by this process.
- Underground water dissolves radium in uraniferous igneous rock and carries it to the surface through at least nine known hot springs.
- Higher than normal potassium favors the production of orthoclase, which is usually absent from most mafic igneous rocks.
- The origin of igneous rock, or petrogenesis, in continental arcs is more complicated than that in oceanic arcs.
- He noted Andean-trending structures and discovered alkaline igneous rocks.
- For this reason it is not advised to utilise a CIPW norm on kimberlites, lamproites, lamprophyres and some silica-undersaturated igneous rocks.
- Orthogneiss is derived from igneous rocks.
- The metasedimentary rocks are quartz-rich and the amphibolites represent mafic igneous intrusions.
- Cassiterite, a widespread minor constituent of igneous rocks, has been the chief tin ore throughout ancient history and remains the most important source of tin today.
- Igneous rocks, whether lava flows or pyroclastic ejections, are less important in the Quaternary than in the Tertiary, though volcanic activity is known to have continued into the Quaternary.
- A "'xenocryst "'is an individual foreign crystal included within an igneous body.
Similar words: Igneous Rocks, Ignoramus, Ignitron, Ignorances, Ignacio, Ignores, Ignore, Igniter, Ign, Ignored, Ignominy, Ignominiously, Ignorantly, Ignitors, Igniting, Ignitable, Ignacia, Ignition Switch, Ignition, Ignaz