How To Use Crustal In A Sentence
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Located on a narrow peninsula, Yehliu features special terrain and geologic landscape from wave erosion , rock weathering, and crustal movement.
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Japan's largest earthquake on record may have knocked the planet 3.9 inches off its axis as one crustal plate slid beneath another, Eric Fielding, a principal scientist with the Jet Propulsion Laboratory in Pasadena, Calif., told Bloomberg news agency.
Report: High chance of magnitude-7 or higher quake in Japan in coming days
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The idea that mountain folds, and the lesser rugosities of the Earth's surface, arose in a wrinkling of the crust under the influence of cooling and skrinkage of the subcrustal materials, is held by many eminent geologists, but not without dissent from others.
The Birth-Time of the World and Other Scientific Essays
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Although there are no data showing the connection between the two magmatic systems at shallow crustal levels during the eruption, the petrochemical data point to a common parent magma derived from a unique deep source.
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During Early Cretaceous times, there was a significant period of plutonism and crustal growth in the magmatic arc.
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Such abrupt changes of sedimentary environment were caused by coseismic crustal movements," Kim and his team wrote in their study.
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When corrections are made to take account of these differences in crustal density the magnitude of gravity anomalies is significantly reduced.
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Such rocks are important in defining ages for crustal rocks underlying the peridotite.
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The study authors propose another, more radical, explanation: The crustal rock they analyzed, called ferroan anorthosite, is not linked to magma dynamics at all.
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Wattset al. 1982 have shown that lateral heat flow results in anomalies in the normal thermal subsidence profile following crustal stretching.
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Generally, foreland basins show convex-up subsidence curves due to increasing subsidence rates through time resulting from migration of a supra-crustal orogenic load towards the foreland.
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Cheney and Hayman challenge the popular notion that Eocene crustal extension formed the so called Chiwaukum graben, in which the non-marine, arkosic Chumstick Formation reputedly was deposited during faulting.
EurekAlert! - Breaking News
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The crustal differentiation processes were dominated by fractionation of olivine, chrome spinel, plagioclase and clinopyroxene, leading to evolved compositions.
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Haiyuan left lateral active fault and northern edge thrust fault of Qilian moutain compose the major northeastern boundary of present day crustal movement of the Qinghai Tibet block.
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In the field, the boundary between crustal units and mantle units is marked by a zone of sheared serpentinite, which overlies more massive largely serpentinized, harzburgite and dunite.
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The layering in these ultramafic rocks, and their position above mantle tectonites, is attributed to lower crustal igneous processes.
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Rather, they appear as relatively small crustal domains infolded with younger, Pan-African rock assemblages.
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These migmatite complexes were mingled with the intrusive magmas that provided the heat sources for crustal melting.
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This suggests that melting of basement rocks at a deeper crustal level, with some input of juvenile melt from the mantle, may have generated the dyke.
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Metals that are considered geochemically scarce occur at crustal abundances of less than 0.1 percent (e.g. nickel, copper, zinc, platinum metals).
AP Environmental Science Chapter 10- Minerals
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They're "the payload" - if we need to drive a palentologist and a crustal geologist around Mars a bunch, they're NSSA astronauts, even if a NSDA astronaut pilots the lander/ascent vehicle and tags along to help carry rocks back to the rover.
What Civil Space Agency Would You Create? - NASA Watch
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The layering in these ultramafic rocks, and their position above mantle tectonites, is attributed to lower crustal igneous processes.
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The Waterford Crustal business comprises the manufacture, marketing, distribution and retailing of high quality crystal products including stemware and giftware.
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The silicic rocks are interpreted as crustal melts resulting from intrusion of mafic magmas.
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If I was a muslim about to build a mosque, I would certainly study the crustal movements of my potential mosque spot relative to that of Mecca, before building.
Crustal Movement and Religion
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Moecher and Steltenpohl document an example of an exhumed deep crustal fault, provide evidence for precise determination of the depth for earthquake rupture, and explore potential mechanisms for how deep crustal coseismic rupture occurs.
EurekAlert! - Breaking News
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On the basis of geochemical analysis and field studies the extrusive volcanic rocks are generally interpreted as being associated with crustal extension.
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Using the isostatie response function technique, we have investigated the isostasy and crustal density structure of Panzhihua- Xichang region, which was supposed to contain a continental rift valley.
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Major crustal rifting has also played a part in the evolution of large bodies of Proterozoic sedimentary and igneous rocks.
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Some important information about ancient plate tectonics and crustal evolution may be obtained from grey gneisses.
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The orogen experienced crustal thickening and high-temperature decompressional melting, resulting in widespread syn - to late-orogenic granitic intrusions.
EurekAlert! - Breaking News
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It is perhaps from such a subcrustal layer that the lava of volcanoes is supplied.
The Elements of Geology
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Eventually the granite that forms the "basement" of our current continents formed in the crust, probably by fractional crystallization of lighter oxides of silicon and aluminum (accelerated by rapid mixing of crustal materials via subduction, remelting, and metamorphosis).
Ancient Predator Revealed!
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He has authored more than 30 journal articles on such topics as airborne laser altimetry, crustal deformation monitoring, and high-precision GPS reference networks.
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Most metamorphic petrologists would argue that the anhydrous nature of rocks formed under deep crustal conditions, e.g. granulites, proves the deep crust is dry.
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Smith, R.B., 1982a, Crustal structure and evolution of an explosive silicic volcanic system at Yellowstone National Park, Special preprint for
Scientific Articles on Yellowstone
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Crustal structure and evolution of an explosive silicic volcanic system at Yellowstone National Park.
Yellowstone National Park, United States
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The Pacific Ocean's crustal plate is sliding underneath the crustal plate Japan rests upon, he says, triggering the quakes.
New quake disrupts power to cooling unit at nuclear plant
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We introduce the additional constraints of crustal isostasy to gravity models and the observations of the polarity of magnetic remanence within the lava pile to magnetic models.
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Most crustal rocks of interest to exploration geophysics are either inherently anisotropic or behave as anisotropic materials when sampled by seismic waves.
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However, only a small fraction (roughly 3 per cent on average) of the crustal abundance of most minerals exists in non-silicate form, as oxides, sulphides, or carbonates.
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Nevertheless, the evidence from deep crustal wells argues a strong case.
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It must be assumed that the crust in following downwards the shrinking subcrustal magma, develops immense compressive stresses in
The Birth-Time of the World and Other Scientific Essays
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These can be related to rates of magma production versus differentiation by crystal fractionation within crustal magma chambers.
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So the crustal stability of NorthwestYunnan is determined dominatingly by the active fault and seism.
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We have argued above that the extension of the crust, and uplift and serpentinization of the mantle, must have happened very shortly after crustal construction.
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See also, three of which are supposed to have subcrustal oceans.
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Taihua complex from the Xiaoqinling area western Henan , consists of supracrustal sequence and granitic gneisses.
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When corrections are made to take account of these differences in crustal density the magnitude of gravity anomalies is significantly reduced.
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These can be related to rates of magma production versus differentiation by crystal fractionation within crustal magma chambers.
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The mechanism of canyon incision is extremely important because it influences our perception of the magnitude of vertical crustal motion or sea-level change that may be required.
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The subcrustal springs and the windows of the sky were stopped, and the rain from the sky was restrained.
Conservapedia - Recent changes [en]
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These data furthermore allow us to assess the relative abundances of different crustal components in the source area from which the sediment was originally derived.
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The geodimeter measurements executed in April also disclosed very rapid and complicated horizontal crustal movements.
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Today's oceans and continents are thus transitory features produced by incessant geotectonic processes that are energized by three sources of the earth's heat: energy conducted through the lithosphere from the underlying hot mantle, radiogenic decay of heat-producing crustal elements, and convective transport by magmas and fluids during orogenic events.
Global material cycles
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The URSEIS seismic profile images the 2D crustal profile from the surface outcrop of the Dzhabyk batholith to the upper mantle.
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The influence of crustal lineaments on the distribution of igneous activity and their influence on its geochemistry are also illustrated by the location of metalliferous deposits.
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The exposed serpentinite dome was surrounded and partly overlain by crustal blocks.
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These supracrustal rocks are intruded by dolerite dykes that have been deformed and metamorphosed together with the country rock.
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Bouguer anomalies include a correction for altitude but only on the basis of an average crustal density.
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Vertical tree trunks preserved in rock strata are evidence of continental type volcanos (as opposed to basaltic oceanic crustal volcanos).
Man made global warming? No way!
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GPS data represented by arrows showing present crustal movement directions and relative magnitudes.
Crustal Movement and Religion
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However, only a small fraction (roughly 3 per cent on average) of the crustal abundance of most minerals exists in non-silicate form, as oxides, sulphides, or carbonates.
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When corrections are made to take account of these differences in crustal density the magnitude of gravity anomalies is significantly reduced.
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The development of extensional and shear fractures in volcanic areas is usually related to magma emplacement at shallow crustal levels.
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In general, the attainment of peak pressure conditions in compressional systems such as the Delamerian Orogeny reflects the effects of crustal thickening.
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It's part of the very active "Ring of Fire, " a zone of major crustal plate clashes that surround the Pacific Ocean.
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The conception of crustal isostasy produces a great effect to the geo-scientific research; especially take an important role in the studies of Geodesy and Geodynamics.
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From our new seismic dataset, we verify this crustal pattern.
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Vertical tree trunks preserved in rock strata are evidence of continental type volcanos (as opposed to basaltic oceanic crustal volcanos).
Man made global warming? No way!
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The 1987 Crustal deformation survey from GPS, leveling, precision gravity and trilateration: Eos, American
Scientific Articles on Yellowstone
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If magma were to accumulate at mid-crustal levels beneath the north Taupo region, this has significant implications for hazard monitoring.
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Another item of interest is that the magmas which feed the Hawaiian arc are pretty much exclusively basaltic, as would be expected from their deep-mantle origin, whereas the yellowstone magmas are of the granite/rhyolite/andesite (aka "crustal") varieties - which would appear anomalous - but at any rate, I wonder do they contain He and Ar in enriched amounts? report abuse
PhysOrg.com - latest science and technology news stories
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The combined isotopic data suggest derivation of the sediments from at least three distinct crustal source regions.
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All the Gardar basic rocks are inferred to have been derived from the mantle, with relatively little crustal contamination.
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So maybe there are enormous subcrustal water reservoirs ... but why would they well to the surface right now in an eyeblink compared with the history of the planet?
REVIEW: Flood by Stephen Baxter
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It is not yet certain whether the high-grade metamorphism and granite formation at c.930 Ma are related to a ‘Grenvillian’ or slightly younger collisional event, or to an episode of rifting and crustal thinning.
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We have mapped the entire Spontang ophiolite region where we recognize a complete upper mantle sequence of harzburgite and crustal gabbroic, sheeted dykes and pillow lava succession.
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Where two continents collide neither experiences significant subduction but some crustal thickening occurs and a mountain belt is formed.
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He argued that all other granites represent hybrid magma formed by reaction of basaltic melt with crustal metamorphic rocks.
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Metals that are considered geochemically abundant occur at crustal abundances of 0.1 percent or more (e.g. iron, aluminum, manganese, magnesium, titanium).
AP Environmental Science Chapter 10- Minerals
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Which, of course, it was: the Mid-Atlantic Ridge was where the subcrustal ocean, also known as "the fountains of the great deep," broke free of its confines.
Examiner National Edition Articles
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The contrary view, however, is that granite is a mixture of crustal and mantle sources.
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These rocks may represent the product of partial melting caused by crustal thickening during an orogenic event.
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The study authors propose another, more radical, explanation: The crustal rock they analyzed, called ferroan anorthosite, is not linked to magma dynamics at all.
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The Nazca Plate, which underlies the eastern Pacific Ocean, slides under western South America, resulting in crustal thickening, uplift and volcanism.
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Is the whole crustal section exhumed, or is only part of the subducted crust exhumed?
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Hal Semkin clung to the hot springs theory despite Jacalan's counterarguments, while Hwang was trying to put together a theory allowing for warm subcrustal emissions of heat and moisture which would not conflict with the geologist's findings.
The Deluge Drivers
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Crustal thickening under the Himalayas reached a maximum during the Pliocene, although the mountains continued to grow (as they are still growing today).
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The trace elements analysis shows that limburgite is the product of partially melting of mantle peridotite and diagenesis did not undergo the crustal contamination.
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Field relations also rule out a direct genetic link between mantle peridotites and upper crustal rocks exposed on the island.
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When corrections are made to take account of these differences in crustal density the magnitude of gravity anomalies is significantly reduced.
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Dacite lava hand sample, with abundant amphibole and plagioclase feldspar. magma mixing or crustal assimilation (by another magma) to form the dacite.
ScienceBlogs Channel : Life Science
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The metamorphic core complex is thus formed as mid-crustal rocks are exhumed by tectonic unroofing in an extensional setting.
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Active rifts are characterized by more voluminous volcanic activity, higher rates of crustal extension, mildly alkaline basalts, and a bimodal distribution of basic and acid magma types.
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It refers actually to the torrential rain, which came not only from rainclouds but also fell back to earth after gushing out of the subcrustal springs.
Conservapedia - Recent changes [en]
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The later two stages of this model involve tectonic convergence of crustal plates which provides the compressional and tensional stresses that produce rock deformation, uplift, and faulting.
Mountain
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The development of extensional and shear fractures in volcanic areas is usually related to magma emplacement at shallow crustal levels.
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Most crustal rocks of interest to exploration geophysics are either inherently anisotropic or behave as anisotropic materials when sampled by seismic waves.
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A similar kind of crustal spreading is happening all the way down the center of the Atlantic Ocean," he added.
BEAUTIFUL DREAMER
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In the 600th year of Noah's life, on the seventeenth day of the second month, on that very day the deep subcrustal springs were broken open, and the windows of the sky were thrown open.
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