| | Journal (article/letter/editorial) | the Dukat Ore Field and Their Relationships to Leucogranite and Epithermal GoldâSilver Ore, Northeastern...fingerlike projection of a highK leucogranite porphyry intrusion with large phenocrysts. These hydrothermal...garnetâcalciteâchlorite alterations were linked to KâNa leucogranite intrusive bodies and developed under conditions...hydrothermal activity and melanocratic inclusions in leucogranite has been taken from regions with elevated U/Pb...by a fingerlike projection of a highK leucogranite intrusion. The ring faults and marginal zones correspond | | ÄernĂœ, Petr, Masau, Morgan, Goad, Bruce E., Ferreira, Karen (2005) The Greer Lake leucogranite, Manitoba, and the origin of lepidolite-subtype granitic pegmatites. Lithos, 80 (1) 305-321 doi:10.1016/j.lithos.2003.11.003 | Journal (article/letter/editorial) | www.elsevier.com/locate/lithos The Greer Lake leucogranite, Manitoba, and the origin of lepidolite-subtype...November 2004 Abstract The Archean Greer Lake leucogranite intruded metabasalts of the Bird River Greenstone...Belt in the southwestern part of the Superior Province of southeastern Manitoba. The considerably evolved...multiphase, peraluminous, B-, P-, and S-poor leucogranite (K/Rb 132 to 24) was probably generated by ...metatonalitic rocks and subsequent differentiation. The leucogranite produced interior, transitional, non-crosscutting | | | Journal (article/letter/editorial) | sill-dyke complex of leucogranite, the Pilga Leucogranite. Farther below, the leucogranite grades via diatexite...intervening Pilga Leucogranite. A set of NNW-trending upright folds with axial planar leucogranite dykes exist...exist in both the Pilga Leucogranite and underlying orthogneisses, but not in the NSS or greenstones. Field...developed in a sub-horizontal attitude before the leucogranite sheets were emplaced above the migmatitic orthogneisses...underlying migmatitic orthogneisses. The sheeted leucogranite complex and underlying orthogneisses were subsequently | | | Report (chapter) | Mineral Exploration, Chitral, Northwest Frontier Province, Pakistan Abstract: A geological map of the eastern...identified small bodies of unfoliated and foliated leucogranite intruded into medium-grade metasediments. Leake...leucogranites, and presumed the metamorphism and the leucogranite formation to be related to crustal thickening...undeformed samples of the Gharam Chasma leucogranite pluton and a leucogranite dyke that cross-cuts the migmatites.....- leucogranite dyke (PH054i) has a U-Pb monazite age of ~190 Ma; an unfoliated leucogranite dyke that | | ÄernĂœ, Petr, Fryer, Brian J., Longstaffe, Frederick J., Tammemagi, Hans Y. (1987) The Archean Lac du Bonnet batholith, Manitoba: Igneous history, metamorphic effects, and fluid overprinting. Geochimica et Cosmochimica Acta, 51 (3) 421-438 doi:10.1016/0016-7037(87)90059-7 | Journal (article/letter/editorial) | biotite granodiorite; (ii) extensive silicic leucogranite (with interior barren and exterior Be, Nb >...granite but the geochemical features of the leucogranite are markedly different. Isotopic constraints...Th and all REE except ELI. The highly evolved leucogranite could have been affected by liquid fractionation...~tion, The ovemll geochemical features of the leucogranite (Sâb f 7.9, RF - 0.7000, hi Fe/Mg, LREE z= HREE...its proximity to the Winnipeg River pegmatite district, and because it underlies the Whiteshell Nuclear | | | Report (chapter) | granodioritic composition which are intruded by a leucogranite (the Roche de St Cast). Strain measurements...bulk sinistral transcurrent shearing within both intrusion and country rocks. rocks. Local shear zone patterns...anastomosed around low strain domains. In contrast, the intrusion shows a more homogeneous structure with a single...thermal history as expected between a magmatic intrusion and its surrounding country-rocks during syntectonic...relatively fine-grained and very homogeneous leucogranite with typical intrusive relationships with respect | | | Journal (article/letter/editorial) | Paleoproterozoic evolution of the Archean western Churchill Province, Canada Received: 17 July 2000 / Accepted: 12...the interior of the Archean western Churchill Province, and provides further insight into the Snowbird...°C/Ma are estimated for gabbroic anorthosite and leucogranite. Rocks surrounding the Kramanituar Complex are...Anderson 1995). However, the western Churchill Province of North America (Fig. 1) has not retained such...Archean supracrustal belts of the western Churchill Province subdivided according to age. Solid 2.9±2.75 Ga; | | | Journal (article/letter/editorial) | 95â119 Growth of Archaean crust in the Kuhmo district, eastern Finland: UâPb and SmâNd isotope constraints...2006 Abstract Neoarchaean plutonism in the Kuhmo district in eastern Finland, Karelia, includes tonalites...Overall, the Archaean plutonic rocks of the Kuhmo district are temporally similar to those in the adjacent...geochronological program in the area (Fig. 1). The Kuhmo district in eastern Finland is regarded as a classic example...granodiorites and monzogranites). In addition to Superior Province, Archean sanukitoids with varying SiO2 contents | | Jiao, Yanjie, Huang, Xuri, Liang, Shengxian, Zhang, Zhi, Li, Guangming (2021) Deep structure and prospecting significance of the Cuonadong dome, Tethys Himalaya, China: Geophysical constraints. Geological Journal, 56 (1). 253-264 doi:10.1002/gj.3962 | Journal (article/letter/editorial) | China Geological Survey, Jinniu District, Chengdu, Sichuan Province, China. Funding information China...revealed that the deposit is related to the leucogranite in the In recent years, much research has been...resistivity and density of rocks are sensitive to leucogranite, dynamic mechanisms of the dome in the Tethys... 2.1 | Regional setting mation, and leucogranite intrusion are all well preserved. The Cuonadong dome...in Figure 5a. ZXK â The Zhaxikang mineralized district northern the Cuonadong dome. Blue box (Figure | | Vladimirov, A. G., Anh, Phan Luu, Kruk, N. N., Smirnov, C. Z., Annikova, I. Yu., Pavlova, G. G., Kuibida, M. L., Moroz, E. N., Sokolova, E. N., Astrelina, E. I. (2012) Petrology of the tin-bearing granite-leucogranites of the Piaoak Massif, Northern Vietnam. Petrology, 20 (6) 545-566 doi:10.1134/s0869591112050074 | Journal (article/letter/editorial) | tinbearing graniteleucogranites located in the Caobang Province of Northern Viet nam compose a stocklike hypabyssal...to acid order: twomica and muscovite graniteleucogranite â rare metal aplites, pegmatites â tinbearing...in crystallization conditions of the graniteâleucogranite magma at the late magmatic stage and formation...aplites and pegmatites demonstrates that graniteâleucogranite magma did not accumulate lithophile and volatile...respect, the Piaoak (Northern Vietnam) graniteâleucogranite massif is of special interest because provides | | Albert, Capucine, Lana, Cristiano, Gerdes, Axel, Schannor, Mathias, Narduzzi, Francesco, Queiroga, GlĂĄucia (2018) Archean magmatic-hydrothermal fluid evolution in the QuadrilĂĄtero FerrĂfero (SE Brazil) documented by B isotopes (LA MC-ICPMS) in tourmaline. Chemical Geology, 481. 95-109 doi:10.1016/j.chemgeo.2018.02.002 | Journal (article/letter/editorial) | FerrĂfero district (SE Brazil), tourmaline occurs as a major constituent in a leucogranitic intrusion and numerous...to 0.75 wt.%) from tourmaline hosted in the leucogranite, the quartzo-feldspathic veins, the tourmalinites...which includes the magmatic tourmaline in the leucogranite (-15.2 to 12.5â°). Most of these isotope compositions...of tourmaline from the QuadrilĂĄtero FerrĂfero district of the southern SĂŁo Francisco craton (SE CE ...AC CE 2. The QuadrilĂĄtero FerrĂfero mining district (QF) is located at the southernmost tip of the | | | Journal (article/letter/editorial) | 2005); (L) Blond topaz-bearing fine-grained leucogranite (Massif Central of France), anhedral late magmatic...granite from the Hub stock, HornĂ Slavkov-KrĂĄsno ore district, Czech Republic, with aggregates of polysynthetic...in the Hub Jo stock, HornĂ Slavkov-KrĂĄsno ore district, Czech Republic. Topaz occurs as irregular, anhedral...Utah, USA. At Qiguling, in the Qitianling tin district, China, Xie et al. (2013) described topaz in a...650 HeĆmanskĂĄ and DolejĆĄ (2011), metallogenic province of Germany Granite from the PodlesĂ stock (dike | | Lajoinie, MarĂa Florencia, Sial, Alcides, BalliviĂĄn Justiniano, Carlos Alberto, Cingolani, Carlos Alberto, Recio, Clemente, Etcheverry, Ricardo Oscar, Basei, Miguel, Lanfranchini, Mabel Elena (2019) First geochronological constraint for the Palaeoproterozoic Lomagundi-Jatuli ÎŽ13C anomaly in the Tandilia Belt basement (Argentina), RĂo de la Plata Craton. Precambrian Research, 334. 105477 doi:10.1016/j.precamres.2019.105477 | Journal (article/letter/editorial) | direction in the central part of the Buenos Aires Province, Argentina (Fig. 2a and b). The set of rocks that...Ma. The San Miguel skarn was developed in the leucogranite - marble contact zone (Lajoinie, 2015; Lajoinie...skarn. b) Detail of the relationship between leucogranite intrusions and marble. Mineral abbreviations...corresponds, Fig. 5. a) Mesoscopic aspect of the leucogranite intrusion. This sector corresponds to the diopside-plagioclase...detail of the texture and mineralogy of the leucogranite which is surrounding the titanite and diopside | | Ballouard, C., Poujol, M., Mercadier, J., Deloule, E., Boulvais, P., Baele, J. M., Cuney, M., Cathelineau, M. (2018) Uranium metallogenesis of the peraluminous leucogranite from the Pontivy-Rostrenen magmatic complex (French Armorican Variscan belt): the result of long-term oxidized hydrothermal alteration during strike-slip deformation. Mineralium Deposita, 53 (5) 601-628 doi:10.1007/s00126-017-0761-5 | Journal (article/letter/editorial) | Uranium metallogenesis of the peraluminous leucogranite from the Pontivy-Rostrenen magmatic complex...In the Pontivy-Rostrenen complex, a composite intrusion, the U mineralization is spatially associated...monzodiorite (3 < U < 9 ppm; Th/U > 3), the leucogranite samples are characterized by highly variable...intrusions. In contrast, apatite grains from the leucogranite display textural, geochemical, and geochronological...leached magmatic uranium oxide from fertile leucogranite and formed U deposits. This phenomenon was sustained | | LANGILLE, J. M., JESSUP, M. J., COTTLE, J. M., LEDERER, G., AHMAD, T. (2012) Timing of metamorphism, melting and exhumation of the Leo Pargil dome, northwest India. Journal of Metamorphic Geology, 30 (8) 769-791 doi:10.1111/j.1525-1314.2012.00998.x | Journal (article/letter/editorial) | facies metamorphic rocks that are intruded by a leucogranite injection complex. Oppositely dipping, normal-sense...Barrovian metamorphism and decompression. The leucogranite injection complex within the dome initiated...shearing, and injection of the decompression-driven leucogranite complex suggests that early crustal melting...dome are intruded by multiple generations of leucogranite dykes and sills. The west side of the LPD is...<350 C (Thiede et al., 2006), the timing of leucogranite injection (Leech, 2008), and the neotectonic | | | Journal (article/letter/editorial) | molybdenite is an accurate means to date intrusions and intrusion-related ore deposits using the model age or isochron...Skellefte district. Four different molybdenite samples from outcrop at KaÌtaberget indicate an intrusion age...(BjoÌrntjaÌrn) and Munka Moâ(W) deposits in the Rappen district are represented by three outcrop and five drill...These two deposits were previously described as intrusion-related Climax-type Mo mineralization. ReâOs ages...Moâ(W) mineralization in northern Sweden is not intrusion-related, but the local product of episodic melting | | Högdahl, Karin, Majka, Jaroslaw, Sjöström, HĂ„kan, Nilsson, Katarina Persson, Claesson, Stefan, KoneÄnĂœ, Patrik (2012) Reactive monazite and robust zircon growth in diatexites and leucogranites from a hot, slowly cooled orogen: implications for the Palaeoproterozoic tectonic evolution of the central Fennoscandian Shield, Sweden. Contributions to Mineralogy and Petrology, 163 (1) 167-188 doi:10.1007/s00410-011-0664-x | Journal (article/letter/editorial) | which is associated with partial melting and leucogranite formation. In one of the domains, the Granite...late-orogenic shear zones. Magmatic monazite in leucogranite records systematic variations in composition...to south, these elements are from the Skellefte district, the Bothnian Basin, the Ljusdal Domain, the HamraÌnge...Bergslagen Region (Fig. 1). The 1.88â1.87 Ga Skellefte district and the 1.90â1.87 Bergslagen Region are both mineralised...(Welin 1987) located to the south of the Skellefte district. The Ljusdal Domain (LjD) contains large volumes | | | Report (chapter) | laccolith whose roof is tectonically removed during intrusion, in a context of crustal exhumation due to channel...below 3 mm a- 1. At such denudation rates, the intrusion process needs to start at depths of c. 22 km,...normal faulting implies that the top part of the leucogranite nearly reaches the surface while its base is...rate ( < 4 m a-1) at the plateau edge during leucogranite generation favours the generation of extruded...crystallization ages of some High Himalayan Leucogranite (HHL) bodies (e.g. _ _ 10 Fig. 1. Sketch | | Lee, Seung-Gu, Asahara, Yoshihiro, Tanaka, Tsuyoshi, Kim, Nam Hoon, Kim, Kun Han, Yi, Keewook, Masuda, Akimasa, Song, Yong Sun (2010) LaâCe and SmâNd isotopic systematics of early Proterozoic leucogranite with tetrad REE pattern. Chemical Geology, 276 (3) 360-373 doi:10.1016/j.chemgeo.2010.07.003 | Journal (article/letter/editorial) | SmâNd isotopic systematics of early Proterozoic leucogranite with tetrad REE pattern Seung-Gu Lee a,â, Yoshihiro...2010 Accepted 8 July 2010 Keywords: Proterozoic leucogranite Tetrad REE pattern LaâCe and SmâNd isotopic...tetrad REE patterns (Lee et al., 1994). The leucogranite is the product of high-grade metamorphism with...pattern for the source material of the Imweon leucogranite with an REE tetrad effect. Our LaâCe and SmâNd...high- Fig. 2. (a) SimpliïŹed regional tectonic province map of East Asia including Korean Peninsula. NM: | | | Journal (article/letter/editorial) | metasedimentary and intrusive rocks of the Western ProvinceâInboard Median Batholith at Lake Manapouri in...Median Batholith over the margin of the Western Province. However, the high original angle of this and...Paleozoic Western Province with continental afïŹnities, and a PermianâMesozoic Eastern Province that comprises...al., 2010). Ductile faults within the Western ProvinceâInboard Median Batholith have been removed for...Western Province and Inboard Median Batholith, Outboard Median Batholith, and Eastern Province. 480 km | | | Journal (article/letter/editorial) | leucogranitoids of the Kianta Complex, Karelian Province, Finland: Source characteristics and processes...leucogranitoids of the Kianta Complex within the Karelian Province of the Fennoscandian Shield. The leucogranitoids...event before ïŹnal cratonization of the Karelian Province. Geochemically the leucogranitoids resemble the...leucogranitoids form a series grading from trondhjemite to leucogranite, which is observable as highly variable CaO...2011; Mikkola et al., 2011a) and was followed by intrusion of ca. 2.70 Ga rocks forming the quartz diorite | | | Journal (article/letter/editorial) | within sillimanite grade rocks contains abundant leucogranite-granite crustal melts of probable Himalayan...discussed. Third, the distribution of anatectic leucogranite and granite bodies is reviewed, and a model...Searle & Fryer, 1986). 4. Thermal effects of leucogranite magmatism. The thrust-related generation and... 50 km south-west of the nearest large leucogranite intrusion, and in the Sikkim Himalaya over lOOkm...fault. They noted the concentration of major leucogranite plutons at the top of the slab and related their | | | Report (issue) | Program, formally entitled âTintina Metallogenic Province: Integrated Studies on Geologic Framework, Mineral...core through the augen gneiss near the Brink intrusion. The supracrustal rocks were invaded by sills...protolith is interpreted to have been a granodiorite intrusion (Dusel-Bacon and Aleinikoff, 1985). Rafts of biotite...Mount Harper batholith Black Mountain intrusion Brink intrusion Diorite and tonalite 20 22 55 Paleozoic...196 + 4 Ma as indicated by the intrusion of nonfoliated leucogranite (Day and others, 2002). However | | Yan, Dan-Ping, Zhou, Mei-Fu, Robinson, Paul T., Grujic, Djordje, Malpas, John, Kennedy, Allen, Reynolds, Peter H. (2012) Constraining the mid-crustal channel flow beneath the Tibetan Plateau: data from the Nielaxiongbo gneiss dome, SE Tibet. International Geology Review, 54 (6) 615-632 doi:10.1080/00206814.2010.548153 | Journal (article/letter/editorial) | and a deformation (D3 ) related to the leucogranite intrusion. SHRIMP zircon UâPb dating yielded a metamorphic...crystallization age of âŒ20 million years for the leucogranite. Hornblende from the amphibolite has an 40 Ar/39...years, whereas muscovites from the schist and leucogranite yielded 40 Ar/39 Ar ages between 13.5 ± 0.2...Tibetan Detachment System; middle crustal layer; leucogranite 1. Introduction Gneiss domes occurring within...the rocks of South Tibet has been related to intrusion of the leucogranites (Aoya et al. 2005, 2006) | | Cottle, John M., Searle, Michael P., Jessup, Micah J., Crowley, James L., Law, Richard D. (2015) Rongbuk re-visited: Geochronology of leucogranites in the footwall of the South Tibetan Detachment System, Everest Region, Southern Tibet. Lithos, 227. 94-106 doi:10.1016/j.lithos.2015.03.019 | Journal (article/letter/editorial) | online 8 April 2015 Keywords: Himalaya Monazite Leucogranite South Tibetan Detachment a b s t r a c t The...Greater Himalayan Sequence. Monazite from four leucogranite samples in the Hermit's Gorge that bracket the...Results suggest that the earliest, ~ 16.4 Ma, leucogranite sills have been folded and deformed along with...regional migmatites and a series of layered leucogranite sills with cross-cutting dykes and larger intrusions...relies on precise geochronology of gneisses and leucogranite melts that are either deformed by or cross-cut |
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