granodiorite et aplites associe

aplitic translation EnglishFrench Dictionary Glosbe

fr Les concentrations en terres rares diminuent des bordures monzodioritiques jusqu''aux noyaux granodioritiques et aux apophyses aplitiques. en At the peak of metamorphism granitic, aplitic and pegmatitic rocks were formed.

L`origine du kaolin de l`arène de la granodiorite des Béni

Ce massif granitique est également sillonné par un cortège filonien d''aplites, de microgranites et de microgabbros orienté NS à NNE SSW et dont la puissance s''étale entre 0,1 et 30m. Il faut signaler aussi que la granodiorite est généralement très altérée aux épontes de ces filons.

GEOLOGY AND MINERAL RESOURCES IN THE HOPEWELL

aplites, and quartz veins. The Mopin Metavolcanic Complex northeast of Hopewell Lake is intruded by the light pink trondhjemite of Rio Brazos and is similar in composition to the granite of Hopewell Lake (Boadi, 1986 Gablemen, 1988). The Maquinita Granodiorite is gray to dark gray, strongly foliated granoFIGURE 2.

The tenuous connection between highsilica rhyolites and

The tenuous connection between highsilica rhyolites and granodiorite plutons Article in Geology 36(2) · February 2008 with 80 Reads DOI: 10.1130/G24496A.1

STRUCTURAL EVOLUTION OF PERIADRIATIC PLUTONS

tilting" defined by Steenken et alii (2002) on the basis of thermochronologic data. The investigated area of the Bergell pluton shows a similar evolution: schlieren and several sets of aplites and pegmatites (Guastoni et al. 2014) are overprinted by a strong solidstate foliation parallel to the PL. Schlieren are the only to show ductile

HAITI ET LE GRANITE Le Granite est IngénieurAgronome

Jul 27, 2014 · HAITI ET LE GRANITE. Le Granite est connu que sur la Terre, où il forme une partie importante de la croûte continentale. Granite se produit souvent les masses d''comme relativement faible, à moins de 100 km (actions) et dans batholithes qui sont souvent associés à

Composition of Tourmaline in Leucogranite, Pegmatite

Complex, loed in SanandajSirjan zone in west of Iran, consists essentially of quartz diorite, granodiorite and monzogranite which are cut by aplitic and pegmatitic and quartztourmaline veins of a few centimetres to 3 meters in thickness. Tourmaline forms one of major minerals in the pegmatite and hydrothermal veins.

Aplite Wikimonde

Les aplites sont constitués essentiellement de quartz, de feldspath alcalin (orthoclase ou microperthite) et de plagioclase.Ils sont très pauvres en minéraux mafiques (biotite, d''habitude) et c''est pour cette raison que leur index de couleur est en dessous de 5, ils sont donc hololeucocrates.L''index des aplites liés aux intrusions plus basiques est un peu plus élevé, mais reste toujours

Prospective Areas for IntrusionRelated GoldQuartz Veins

granodiorite and highly fractionated 2mica granites, aplites and pegmatites. These, like there northern counterparts, are emplaced into miogeoclinal rocks of ancestral North America and the Shuswap and Kootenay terrane pericratonic rocks. The first year''s field studies focused on two intrusionhosted goldquartz systems in southern BC, the

PETROGRAPHIE DU GISEMENT D''OR DE BONIKRO, SILLON

La granodiorite porphyroïde de Bonikro intrude les formations volcaniques mafiques et volcanosédimentaires au centre de la carrière puis s''allonge vers le Nord Est. L''ensemble des travaux de terrain s''étant organisé autour d''elle, nous avons pu nous rendre compte de sa variété texturale.

granodiorite French translation – Linguee

Le prospect Cipmyluk, dont la découverte résulte de travaux antérieurs, est situé dans la partie nord de la propriété sur un segment de 2 km de long fortement hématisé et silicifié d''une faille majeure cassante recoupant une granodiorite foliée.

Granite: Igneous Rock Pictures, Definition & More

Granite is the rock most often quarried as a "dimension stone" (a natural rock material that has been cut into blocks or slabs of specific length, width, and thickness). Granite is hard enough to resist abrasion, strong enough to bear significant weight, inert enough to

hedral peak granodiorite : définition de hedral peak

The Cathedral Peak Granodiorite (CPG) was named after its type locality, Cathedral Peak in Yosemite National Park, California.The granodiorite forms part of the Tuolumne Intrusive Suite (aka Tuolumne Batholith), one of the four major intrusive suites within the Sierra Nevada has been assigned radiometric ages between 88 and 87 million years BP and therefore reached its cooling stage in the

Un exemple de minéralisation aurifère syncinématique

Jan 30, 2000 · Un exemple de minéralisation aurifère syncinématique (Wrightbar), liée à un chevauchement, dans l''Archéen de l''Abitibi (Canada) An example of synkinematic gold mineralization (Wrightbar), associated with a thrust fault, in the Abitibi Archaen area (Canada).

Granite–greenstone connection in western Victoria: an

granodiorite and granite to aplite and was emplaced in the Grampians–Stavely Zone 30 km southeast Korsch et al. 2002) (Figure 1). The area bounded by the and aplites. The following briefly summarises the mineralogy of these key lithologies.

Pegmatite Wikipedia

A pegmatite is an igneous rock, formed underground, with interlocking crystals usually larger than 2.5 cm in size (1 in).Most pegmatites are found in sheets of rock (dikes and veins) near large masses of igneous rocks called batholiths.The word pegmatite derives from Homeric Greek, πήγνυμι (pegnymi), which means "to bind together", in reference to the intertwined crystals of quartz

Volume 28, numéro 1, march 1992 – Atlantic Geology – Érudit

Volume 28, numéro 1, march 1992 Sommaire (10 articles) La proportion d''aggnSgat riche en plagioclase d£croit avec la profondeur tandis que la granodiorite et le monzogranite a biotite deviennent plus abondants. Le microgranitc a typiquemenl unc composition de syenogranite et est intimement associe" a de l''alteralion ct de la

SHRIMP zircon UPb dating of the mafic and felsic

are crosscut by narrow mafic dykes and aplites. SHRIMP zircon UPb data are presented for the granodiorite and a mafic dyke that crosscut the granodiorites in the Saza area of the LGF, with the aim of constraining the mafic and felsic magmatism and their impliion to gold minera lization. The zircon UPb data shows that the

tenuous connection between highsilica rhyolites and

HSRs thus may be extracted from a granodiorite mush relatively early, before the liquid is saturated with titanite. Aplites may form later, after titanite begins to crystallize. Alternatively, aplites and rhyolites may form by partial melting of granodiorite, because trace element partitioning for equilibrium melting and crystallization is the

Generation of a magmatic H 2 OCO 2 fluid enriched in Au

Enrichments in Au, Mo, and W in the Mink Lake aplites (3 + or 2 ppb, 23 + or 35 ppm, 7 + or 6 ppm, respectively) show that magmatic fractionation processes increased Au, Mo, and W to sufficiently high levels to generate Au and Wenriched MoS 2 mineralization, when partitioned into hydrothermal fluids, from a parental granodiorite in

University of Nevada The Geology and Uranium Occurrences

University of Nevada Reno The Geology and Uranium Occurrences of the Washington Mining District, Lyon County, Nevada A thesis submitted in partial fulfillment of the

MP2 Research Group PegmatiteAplite Dike

However, samples collected from the spatially associated Woodson Mountain Granodiorite at distances up to 15 km away from the pegmatites have not been affected by pegmatite intrusion. According to Foord et al. (1991), this granodiorite was emplaced prior to 113 Ma (hornblende age) and had cooled below 300 °C (biotite Arretention temperature

IntrusionRelated Gold Mineral Occurrences of the Bayonne

et al., 1999, Lang and Baker, 2001), but those most applica subalkalic hornblendebiotite granodiorite and highly fractionated 2mica granites, aplites and pegmatites. Some of aplites and quartz veins (Bakke, 1995), while it is found in miarolitic cavities

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A clear distinction cannot be easily made between diorite and gabbro (Bishop & Key, 1983, p. 921 et seq.) but some of the diorites have relict textures and mineralogy indiive of gabbros. This field relationship may also be produced by crystallisation from a

Supporting Evidence for a 9.6 1 ka Rock Fall Originating

granodiorite of Glacier Point, corresponding to bedrock samples loed at the summit of Glacier Point. We interpret boulders in Upper Pines Campground to result from a single large rock fall event originating from the east face of Glacier Point circa 9.6 ± 1 ka they were subsequently partially buried by

D E V E L O P M E N T AND RESOURCES The field

Biotitehornblende granodiorite (Dsg) is only exposed in the Ben Lomond Quadrangle in three relatively small areas (totalling about 1 km2) on or near t he nor thwes tern mar gin of th e sheet (Calver et al., 1988). Subsequent mapping of the adjoining Alberton Quadrangle to the north (McClenaghan et al., 1993) has sh own that the granodiorite is

The latehercynian Diélette magnetite skarn (Armorican

The latehercynian Diélette magnetite skarn (Armorican massif, France) dykes stériles de microgranites et d''aplites à disposition. franc entre la granodiorite et les skarns (fig. 5).

SHRIMP zircon UPb dating of the mafic and felsic

These rocks are crosscut by narrow mafic dykes and aplites. SHRIMP zircon UPb data are presented for the granodiorite and a mafic dyke that crosscut the granodiorites in the Saza area of the LGF, with the aim of constraining the mafic and felsic magmatism and their impliion to gold mineralization.

PiégutPluviers Granodiorite Le Parisien

The PiégutPluviers Granodiorite is surrounded in the north, northeast and east by the SaintMathieu Leucogranite and its eqivalents (unit 17 on the geological map), which has a slightly younger age of 315 ± 17 million years BP (Pennsylvanian, Bashkirian). In the northwest and southeast it is bordered by various paragneisses (unit bk).

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Jersey Geology Trail: Granite. (Lat. granum=grain Gk. lithos=stone), Granophyre & Granodiorite. Southwest Corbière granite, Portelet. Granodiorite, Sorel Point. Granite is a light coloured, grey to pink, coarsely crystalline, plutonic, acid igneous rock composed of quartz, alkali feldspar, generally orthoclase, and biotite and/or muscovite

granodiorite bodies French translation – Linguee

Many translated example sentences containing "granodiorite bodies" – FrenchEnglish dictionary and search engine for French translations. Look up in Linguee Suggest as a translation of "granodiorite bodies" de granodiorite, de tonalite et de syénite (Simard, 2008).

Aplite — Wikipédia

Les aplites sont constitués essentiellement de quartz, de feldspath alcalin (orthoclase ou microperthite) et de plagioclase.Ils sont très pauvres en minéraux mafiques (biotite, d''habitude) et c''est pour cette raison que leur index de couleur est en dessous de 5, ils sont donc hololeucocrates.L''index des aplites liés aux intrusions plus basiques est un peu plus élevé, mais reste toujours

GEOLOGY OF WESTERN AKING AND ITS ENVIRONS AND HEAVY

The area is situated in Cross River State which falls within the Basement Complex of South Eastern Nigeria (Oban Massif). Geologically, the study area is made up of basement rocks, some of which are weathered. Form field studies, gneiss, granodiorite and pegmatite are

A Tale of Two Plutons: Geochemical Evidence Bearing on the

The Eagle Peak pluton is zoned with an equigranular granodiorite margin and porphyritic granitic core in contrast, the nearby, and coeval Red Lake granodiorite pluton is relatively unzoned. Major element abundance variations in both plutons can be explained by segregation of the early phases, plagioclase and hornblende. However, the preferential decrease of heavy rareearth elements (HREE

Cooling rates and crystallization dynamics of shallow

aplites can occur in an irregular distribution throughout the footwall. Clearly, changes in grain size of ~5 orders of magni Mountain Granodiorite at distances up to 15 km away from the pegmatites have not been affected by pegmatite intrusion. According to Foord et al. (1991), this granodiorite was emplaced prior to 113 Ma (hornblende age

Latetectonic granitoid intrusions, Caledonian magmatism

Contacts of the pluton are poorly defined, with a xenolithic mediumgrained marginal granodiorite facies passing outwards into a vein complex. The Moy Granite (47) varies from porphyritic biotitegranodiorite to rare biotitegranite (Zaleski, 1985). The abundance of feldspar megacrysts increases towards the southern part of the intrusion.

Granodiorite Wikipedia

Granodiorite (/ ˌ ɡ r æ n oʊ ˈ d aɪ ə r aɪ t, n ə/) is a phaneritictextured intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspar.According to the QAPF diagram, granodiorite has a greater than 20% quartz by volume, and between 65% to 90% of the feldspar is plagioclase. A greater amount of plagioclase would designate the rock as

Structural characterization of rockfall sources in

granite et des environ 4 millions de visiteurs annuels. Pour évaluer l''aléa de chutes de blocs il est nécessaire d''analyser les structures géologiques et de localiser les futures zones sources les plus probables. Grâce au couplage de nouvelles techniques de télédétection (Scanner Laser Terrestre et Scanner Laser Aérien) et d

Etude comparative des granites hyperalumineux de la

Les granodiorites et les monzogranites du South Mountain Batholith et du Massif Central sont travers6s abondamment par des filons d''aplite, de pegmatite et de microgranite. En outre, la granodiorite du South Moun tain Batholith est recoup6e par des corps mineurs dont la min6ralogie et la texture sont comparables ~ celles des filons.

Abstract record 2003 14 part2 ga.gov

of the Braidwood Granodiorite were fundamental in the formation of these deposits. The Braidwood Granodiorite is a major pluton comprising the northern part of the essentially Itype Bega Batholith (Chappell et al., 1988). The pluton is a multiple intrusion formed by at least two separate injections of magma of very similar composition.

L''origine du kaolin de l''arène de la granodiorite des Béni

Ce massif granitique est également sillonné par un cortège filonien d''aplites, de microgranites et de microgabbros orienté NS à NNE SSW et dont la puissance s''étale entre 0,1 et 30m. Il faut signaler aussi que la granodiorite est généralement très altérée aux épontes de ces filons.

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