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granodiorite et aplites associe

  • Supporting Evidence for a 9.6 1 ka Rock Fall Originating

    Supporting Evidence for a 9.6 1 ka Rock Fall Originating

    Dome Granodiorite (Coleman et al., 2012). Kistler (1973) mapped several of these leucocratic zones as aplites. Glacial History of Yosemite Valley Glacial ice has occupied Yosemite Valley on several occasions throughout the Pleistocene, with the earliest advances overtopping the valley walls and the youngest only partially filling the valley

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  • Genesis of the Olympias CarbonateHosted PbZn (Au, Ag

    Genesis of the Olympias CarbonateHosted PbZn (Au, Ag

    Genesis of the Olympias CarbonateHosted PbZn(Au,Ag) Sulfide Ore Deposit, Eastern Chalkidiki Peninsula, Northern Greece S. I. KALOGEROPOULOS, S. P. KILIAS, D. C. BITZIOS, Institute of Geology and Mineral Exploration (IGME), 70 Mesoghion Street, Athens 115 27, Greece M. NICOLAOU,

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  • HAITI ET LE GRANITE Le Granite est IngénieurAgronome

    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

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  • THE JOURNAL OF GEOLOGY JSTOR

    THE JOURNAL OF GEOLOGY JSTOR

    THE JOURNAL OF GEOLOGY September 1983 A TALE OF TWO PLUTONS: GEOCHEMICAL EVIDENCE BEARING ON THE ORIGIN AND DIFFERENTIATION OF THE RED LAKE AND EAGLE PEAK PLUTONS, CENTRAL SIERRA NEVADA, CALIFORNIA1 H. J. NOYES, F. A. FREY, AND D. R. WONES3 Department of Earth and Planetary Sciences, Massachusetts Institute of Technology,

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  • Cantonnier Lode Wikipedia

    Cantonnier Lode Wikipedia

    It is assumed that the lode was emplaced during the distensive cooling phase of the granodiorite, supported by a lead isotope date of 300 to 250 million years BP. The Cantonnier lode is not a singular occurrence but rather is accompanied by several other lodes, which were mineralized at the same time.

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  • CHAPITRE I. CONTEXTE GEOGRAPHIQUE ET GEOLOGIQUE

    CHAPITRE I. CONTEXTE GEOGRAPHIQUE ET GEOLOGIQUE

    Les produits différenciés ont monté, soit dans le granite consolidé, soit dans le granite en voie de consolidation et ont formé des coupoles et dômes adventifs dans le grand dôme du batholithe, ainsi que des filons et filonnets de pegmatites, aplites et quartz qui, profitant des joints des diaclasés, des zones laminées et foliacées

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  • Cantonnier Lode Wikipedia

    Cantonnier Lode Wikipedia

    It is assumed that the lode was emplaced during the distensive cooling phase of the granodiorite, supported by a lead isotope date of 300 to 250 million years BP. The Cantonnier lode is not a singular occurrence but rather is accompanied by several other lodes, which were mineralized at the same time.

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  • Article

    Article

    Article Reference Petrogenesis of the gold bearing Zarrin granite VALIZADEH, MohammedVali, OMRANI, Jafar, MORITZ, Robert Abstract Zarrin granite intrusion is

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  • Tête coiffée. Granodiorite. Nouvel Empire ou postérieur

    Tête coiffée. Granodiorite. Nouvel Empire ou postérieur

    Tête coiffée. Granodiorite. Nouvel Empire ou postérieur. Etiquette [], Auction est la plateforme de vente aux enchères d''objets d''art de référence. Vermot et Associés

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  • Mafic Microgranular Enclaves in the Kozak Granodiorite

    Mafic Microgranular Enclaves in the Kozak Granodiorite

    granodiorite indie that the Kozak granodiorite is a product of partial melting and fractional crystallization of basic magma, and enclaves are trapped blobs of basic initial magma. Petrographic properties indie that during magmatic evolution, the granodiorite and enclaves are effected by magma mingling and mixing processes.

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  • The radiometric age of the Mount Keith Granodiorite, a

    The radiometric age of the Mount Keith Granodiorite, a

    The ''granite'' pluton previously shown by Durney (1972) to be unconformably overlain in the Jones Creek area of Western Australia by a boulder conglome

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  • GEOLOGY AND MINERAL RESOURCES IN THE HOPEWELL

    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.

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  • Early Stages of Tectonic Evolution of the Pieniny Klippen Belt

    Early Stages of Tectonic Evolution of the Pieniny Klippen Belt

    to reaction Bio + Sill = Gr + Kfs + L (Spear et al., 1999). On the other hand, garnet aplites originated from a twomica metapelites probably at higher temperatures involving both muscovite and biotite dehydration melting, producing peritectic garnet and Kfeldspar (e.g. by the reaction Bio + Sill + Qtz + Ab = Kfs + Gar + L).

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  • hedral peak granodiorite : définition de hedral peak

    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.It has been assigned radiometric ages between 88 and 87 million years BP and therefore reached its cooling stage in the

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  • Granite: Igneous Rock Pictures, Definition & More

    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

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  • COMPOSITE APLITEPEGMATITES OF THE FRANKLIN

    COMPOSITE APLITEPEGMATITES OF THE FRANKLIN

    COMPOSITE APLITEPEGMATITES OF THE FRANKLINSYLVA DISTRICT, NORTH CAROLINA1 E. Wu. IIerNnrcn, The Unitersity of Michigan, Ann Arbor, M''ichigon,. Aesrnncr The FranklinSylva district of southern North Carolina contains a number of rnultiphase, composite, aplitepegmatite intrusions of tonaliticgranodioritic composition. In

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  • THE JOURNAL OF GEOLOGY

    THE JOURNAL OF GEOLOGY

    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

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  • Tirich granodiorite porphyries from the northeastern

    Tirich granodiorite porphyries from the northeastern

    The other constraint for the age of the emplacement of granodiorite porphyries on the northeastern margin of the Klenov massif is the age of uranium mineralization (U/Pb, 255 [+ or ] 3 Ma Anderson et al. 1989) of the Okrouhla Radoun uranium deposit.

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  • Interplay between geochemistry and magma dynamics during

    Interplay between geochemistry and magma dynamics during

    0.7 Ma for the twomica granodiorite to granite ( De Wet et al., 1989 Christofides et al., 1990 ), whereas Rb–Sr isochrones forother rock types gaveanaverageage of 46Ma on wholerock biotite pairs (Christofides et al., 1990). Based on discrimination diagrams of Pearce et al. (1984) and Harris et al. (1986), D''Amico et al. (1990)

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  • For personal use only Sayona Mining

    For personal use only Sayona Mining

    rocks (Card et Ciesielski, 1986) with a substantial portion composed, however, of granitoid rocks. The Lake Simard area exposes a suite of granodiorite, biotitemuscovite monzogranites, aplites and granitic pegmatites. The aplites and granitic pegmatites occur at the margins of the Réservoir Decelles Batholith and within the enclosing volcano

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  • Mafic Microgranular Enclaves in the Kozak Granodiorite

    Mafic Microgranular Enclaves in the Kozak Granodiorite

    granodiorite indie that the Kozak granodiorite is a product of partial melting and fractional crystallization of basic magma, and enclaves are trapped blobs of basic initial magma. Petrographic properties indie that during magmatic evolution, the granodiorite and enclaves are effected by magma mingling and mixing processes.

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  • PETROGRAPHIE DU GISEMENT D''OR DE BONIKRO, SILLON

    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.

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  • Rapport Granitoides de la méseta marocain

    Rapport Granitoides de la méseta marocain

    Oct 11, 2017 · Rapport Granitoides de la méseta marocain Le faciès principal de cette région est la granodiorite composé par du granite à biotite ainsi que de la cordiérite et l''andalousite. 1982). Ce sont des filons à leucogranites, aplites et pegmatites (à quartz, à tourmaline ou à feldspaths potassiques). L''analyse modale (Fig.14

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  • Petrography, geochemistry, and U–Pb geochronology of

    Petrography, geochemistry, and U–Pb geochronology of

    The Alvand intrusive complex in the Hamedan area in Iran is in the Sanandaj–Sirjan zone of the Zagros orogen. It consists of a wide range of plutonic rocks, mainly gabbro, diorite, granodiorite, granite, and leucogranites that were intruded by aplitic and pegmatitic dykes. At least three successive magmatic episodes generated an older gabbro–diorite–tonalite assemblage, followed by a

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  • A Tale of Two Plutons: Geochemical Evidence Bearing on the

    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

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  • Abstract record 2003 14 part2 ga.gov.au

    Abstract record 2003 14 part2 ga.gov.au

    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.

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  • ABOUT THE POSITION OF DYKE BODIES AND MAGMA

    ABOUT THE POSITION OF DYKE BODIES AND MAGMA

    ABOUT THE POSITION OF DYKE BODIES AND MAGMA MINGLING PROCESSES IN VEJEN PLUTON, CENTRAL STARA PLANINA MOUNTAINS1 A. Lazarova, Z. Ivanov, N. Georgiev (Submitted by Corresponding Member Ch. Dabovski on July 8, 2005) Abstract Vejen pluton is a part of the Variscan Stara Planina granodioritegranite com plex.

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

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

    Close mobile search navigation. Article navigation. Volume 82, Number 7

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  • Petrography and Mineral Chemistry of the Boroujerd Pluton

    Petrography and Mineral Chemistry of the Boroujerd Pluton

    The Boroujerd pluton is chiefly constituted of quartzdiorite, granodiorite and monzogranite. The mineral chemistry and microprobe analysis of mineral assemblages in these rocks indie that the magma in this area has a metaluminous to slightly peraluminous composition, related to calcalkaline, arctype magmas and displays features typical of Itype granitoids.

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  • Chapter IV Geochronology and nature of the

    Chapter IV Geochronology and nature of the

    Granodiorite (Cahen et al., 1984). The Roan Antelope Granite at Luanshya yielded a (recalculated) 207Pb/206Pb isochron age, based on four bulk zircon fractions, of 1702 Ma (Cahen et al., 1970c 1984). Cliff and Clemmey (1976) obtained a RbSr model age of ca. 2 Ga on muscovite from a pegmatite cutting basement rocks at Mindola Mine.

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  • SHRIMP zircon UPb dating of the mafic and felsic

    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.

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  • Petrography and Mineral Chemistry of the Boroujerd Pluton

    Petrography and Mineral Chemistry of the Boroujerd Pluton

    The Boroujerd pluton is chiefly constituted of quartzdiorite, granodiorite and monzogranite. The mineral chemistry and microprobe analysis of mineral assemblages in these rocks indie that the magma in this area has a metaluminous to slightly peraluminous composition, related to calcalkaline, arctype magmas and displays features typical of Itype granitoids.

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  • Pegmatites and aplites: Their genetic and applied ore geology

    Pegmatites and aplites: Their genetic and applied ore geology

    Pegmatitic rocks are very coarsegrained basement rocks abundant in quartz, feldspar or/and mica, in places, endowed either with mega crystals of the aforementioned rockforming minerals or rare

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  • net

    net

    The relationships between the several rock types, especially that of the granodiorite and diorite are described by Salmon (1996, p. 114 120), and although it is more friable in outcrop, the granodiorite is more compact subsurface and is quarried more for this quality than the diorite.

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  • net

    net

    Brown et al. (1990, p. 195 et seq.) describe the central aplite as a Microgranite. Aplogranite is also one of four granites in the Northwest Igneous Complex and crops out at its eastern end where it is named as the Mont Mado granite locally and by Bishop & Bisson (1989, loc. cit.), but just as a Red Granite by Brown et al (1990, p.195 et seq.).

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  • GEOLOGY AND MINERAL RESOURCES IN THE HOPEWELL

    GEOLOGY AND MINERAL RESOURCES IN THE HOPEWELL

    New Mexico Geological Society Guidebook, 62GEOLOGY AND MINERAL RESOURCES OF THE NORTHERN TUSAS MOUNTAINS nd Field Conference, Geology of the Tusas Mountains Ojo Caliente, 2011, p. 379388. 379 GEOLOGY AND MINERAL RESOURCES IN THE HOPEWELL AND BROMIDE NO. 2 DISTRICTS, NORTHERN TUSAS MOUNTAINS,

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  • GEOLOGY AND MINERAL RESOURCES IN THE HOPEWELL

    GEOLOGY AND MINERAL RESOURCES IN THE HOPEWELL

    New Mexico Geological Society Guidebook, 62GEOLOGY AND MINERAL RESOURCES OF THE NORTHERN TUSAS MOUNTAINS nd Field Conference, Geology of the Tusas Mountains Ojo Caliente, 2011, p. 379388. 379 GEOLOGY AND MINERAL RESOURCES IN THE HOPEWELL AND BROMIDE NO. 2 DISTRICTS, NORTHERN TUSAS MOUNTAINS,

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  • Cooling rates and crystallization dynamics of shallow

    Cooling rates and crystallization dynamics of shallow

    Cooling rates and crystallization dynamics of shallow level pegmatiteaplite dikes, aplites can occur in an irregular distribution throughout the footwall. Clearly, changes in grain size of ~5 orders of magni According to Foord et al. (1991), this granodiorite was emplaced prior to 113 Ma (hornblende age) and had cooled below 300 °C

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  • Is chemical zonation in plutonic rocks driven by changes

    Is chemical zonation in plutonic rocks driven by changes

    Aplites are generally accepted to be the products of shallowcrustal crystal/liquid separation (Eichelberger et al., 2006 Glazner et al., 2008), and we propose the same origin for the leucocratic Half Dome Granodiorite. However, rather than intruding as dikes, the leucocratic Half Dome Granodiorite appears to have collected at the western

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