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Journal articles on the topic 'S-type granites'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Regelous, Anette, Lars Scharfenberg, and Helga De Wall. "Origin of S-, A- and I-Type Granites: Petrogenetic Evidence from Whole Rock Th/U Ratio Variations." Minerals 11, no. 7 (2021): 672. http://dx.doi.org/10.3390/min11070672.

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The origin and evolution of granites remain a matter of debate and several approaches have been made to distinguish between different granite types. Overall, granite classification schemes based on element concentrations and ratios, tectonic settings or the source rocks (I-, A-, S-type) are widely used, but so far, no systematic large-scale study on Th/U ratio variations in granites based on their source or tectonic setting has been carried out, even though these elements show very similar behavior during melting and subsequent processes. We therefore present a compiled study, demonstrating an

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2

Clemens, J. D., and G. Stevens. "S- to I- to A-type magmatic cycles in granitic terranes are not globally recurring progressions. The cases of the Cape Granite Suite of Southern Africa and central Victoria in southeastern Australia." South African Journal of Geology 124, no. 3 (2021): 565–74. http://dx.doi.org/10.25131/sajg.124.0007.

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Abstract Recurring progression from S- to I- to A-type granites has been proposed for a subset of granitic rocks in eastern Australia. The wider applicability and the validity of this idea is explored using the Cape Granite Suite (CGS) of South Africa and the granitic and silicic volcanic rocks of central Victoria, in southeastern Australia. Within the CGS there is presently little justification for the notion that there is a clear temporal progression from early S-type, through I-type to late A-type magmatism. The I- and S-type rocks are certainly spatially separated. However, apart from a si

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3

White, A. J. R., and B. W. Chappell. "Some supracrustal (S-type) granites of the Lachlan Fold Belt." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 79, no. 2-3 (1988): 169–81. http://dx.doi.org/10.1017/s026359330001419x.

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ABSTRACTS-type granites have properties that are a result of their derivation from sedimentary source rocks. Slightly more than half of the granites exposed in the Lachlan Fold Belt of southeastern Australia are of this type. These S-type rocks occur in all environments ranging from an association with migmatites and high grade regional metamorphic rocks, through an occurrence as large batholiths, to those occurring as related volcanic rocks. The association with high grade metamorphic rocks is uncommon. Most of the S-type granites were derived from deeper parts of the crust and emplaced at hi

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4

Chappell, B. W., and A. J. R. White. "I- and S-type granites in the Lachlan Fold Belt." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 83, no. 1-2 (1992): 1–26. http://dx.doi.org/10.1017/s0263593300007720.

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ABSTRACTGranites and related volcanic rocks of the Lachlan Fold Belt can be grouped into suites using chemical and petrographic data. The distinctive characteristics of suites reflect source-rock features. The first-order subdivision within the suites is between those derived from igneous and from sedimentary source rocks, the I- and S-types. Differences between the two types of source rocks and their derived granites are due to the sedimentary source material having been previously weathered at the Earth's surface. Chemically, the S-type granites are lower in Na, Ca, Sr and Fe3+/Fe2+, and hig

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5

Blevin, Phillip L., and Bruce W. Chappell. "The role of magma sources, oxidation states and fractionation in determining the granite metallogeny of eastern Australia." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 83, no. 1-2 (1992): 305–16. http://dx.doi.org/10.1017/s0263593300007987.

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ABSTRACTThe ore-element associations of granite-related ore deposits in the eastern Australian Palaeozoic fold belts can be related to the inferred relative oxidation state, halogen content and degree of fractional crystallisation within the associated granite suites. Sn mineralisation is associated with both S- and I-type granites that are reduced and have undergone fractional crystallisation. Cu and Au are associated with magnetite- and/or sphene-bearing, oxidised, intermediate I-type suites. Mo is associated with similar granites that are more fractionated and oxidised. W is associated with

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6

Broska, Igor, and Igor Petrík. "Variscan thrusting in I- and S-type granitic rocks of the Tribeč Mountains, Western Carpathians (Slovakia): evidence from mineral compositions and monazite dating." Geologica Carpathica 66, no. 6 (2015): 455–71. http://dx.doi.org/10.1515/geoca-2015-0038.

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AbstractThe Tribeč granitic core (Tatric Superunit, Western Carpathians, Slovakia) is formed by Devonian/Lower Carboniferous, calc-alkaline I- and S-type granitic rocks and their altered equivalents, which provide a rare opportunity to study the Variscan magmatic, post-magmatic and tectonic evolution. The calculatedP-T-Xpath of I-type granitic rocks, based on Fe-Ti oxides, hornblende, titanite and mica-bearing equilibria, illustrates changes in redox evolution. There is a transition from magmatic stage atTca. 800–850 °C and moderate oxygen fugacity (FMQ buffer) to an oxidation event at 600 °C

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7

Broska, Igor, and Michal Kubiš. "Accessory minerals and evolution of tin-bearing S-type granites in the western segment of the Gemeric Unit (Western Carpathians)." Geologica Carpathica 69, no. 5 (2018): 483–97. http://dx.doi.org/10.1515/geoca-2018-0028.

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Abstract The S-type accessory mineral assemblage of zircon, monazite-(Ce), fluorapatite and tourmaline in the cupolas of Permian granites of the Gemeric Unit underwent compositional changes and increased variability and volume due to intensive volatile flux. The extended S-type accessory mineral assemblage in the apical parts of the granite resulted in the formation of rare-metal granites from in-situ differentiation and includes abundant tourmaline, zircon, fluorapatite, monazite-(Ce), Nb–Ta–W minerals (Nb–Ta rutile, ferrocolumbite, manganocolumbite, ixiolite, Nb–Ta ferberite, hübnerite), cas

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8

Collins, William J., Hui-Qing Huang, Peter Bowden, and A. I. S. Kemp. "Repeated S–I–A-type granite trilogy in the Lachlan Orogen and geochemical contrasts with A-type granites in Nigeria: implications for petrogenesis and tectonic discrimination." Geological Society, London, Special Publications 491, no. 1 (2019): 53–76. http://dx.doi.org/10.1144/sp491-2018-159.

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AbstractThe classical S–I–A-type granites from the Lachlan Orogen, SE Australia, formed as a tectonic end-member of the accretionary orogenic spectrum, the Paleozoic Tasmanides. The sequence of S- to I- to A-type granite is repeated at least three times. All the granites are syn-extensional, formed in a dominantly back-arc setting behind a single, stepwise-retreating arc system between 530 and 230 Ma. Peralkaline granites are rare. Systematic S–I–A progressions indicate the progressive dilution of an old crustal component as magmatism evolved from arc (S-type) to proximal back-arc (I-type) to

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9

Imeokparia, E. G. "Geochemical evolution of the Jarawa Younger Granite complex and its related mineralization, northern Nigeria." Geological Magazine 122, no. 2 (1985): 163–73. http://dx.doi.org/10.1017/s0016756800031071.

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AbstractThe Jarawa Younger Granite complex is composed of high silica alkali granites that were emplaced 161 Ma ago. The granites are characterized by high contents of Rb, Li, F, Sn, Nb, W above normal low-Ca granitic rocks and have typical S-type characteristics that are indicative of a substantial component of crustal melt.Mineralization in the complex is associated with the biotite granite which was emplaced as a sheet-like body at relatively shallow depth and occurs as disseminations and as greisen lodes and veins.Chemical studies of the granites have shown that the biotite granite represe

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10

Steiner, Benedikt M., Gavyn K. Rollinson, and John M. Condron. "An Exploration Study of the Kagenfels and Natzwiller Granites, Northern Vosges Mountains, France: A Combined Approach of Stream Sediment Geochemistry and Automated Mineralogy." Minerals 9, no. 12 (2019): 750. http://dx.doi.org/10.3390/min9120750.

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Following a regional reconnaissance stream sediment survey that was carried out in the northern Vosges Mountains in 1983, a total of 20 stream sediment samples were collected with the aim of assessing the regional prospectivity for the granite-hosted base and rare metal mineralisation of the northern Vosges magmatic suite near Schirmeck. A particular focus of the investigation was the suspected presence of W, Nb and Ta geochemical occurrences in S-type (Kagenfels) and I-S-type (Natzwiller) granites outlined in public domain data. Multi-element geochemical assays revealed the presence of fault-

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11

Pe-Piper, Georgia. "Origin of S-type granites coeval with I-type granites in the Hellenic subduction system, Miocene of Naxos, Greece." European Journal of Mineralogy 12, no. 4 (2000): 859–75. http://dx.doi.org/10.1127/ejm/12/4/0859.

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12

Williams, Ian S., and Kenton S. W. Campbell. "Bruce William Chappell 1936–2012." Historical Records of Australian Science 28, no. 2 (2017): 146. http://dx.doi.org/10.1071/hr17012.

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Bruce Chappell was one of the most distinguished geologists of his generation whose contributions to understanding the origins of granites are both insightful and profound. A pioneer in the application of X-ray fluorescence spectrography to the analysis of geological materials, his radical ideas about magma genesis, still the subject of vigorous debate, have dominated and largely determined the global directions of subsequent research on granites. His restite model, the recognition that most granite magmas move bodily away from their source regions as a mixture of melt and solid residual mater

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13

Broska, Igor, and Igor Petrík. "Genesis and stability of accessory phosphates in silicic magmatic rocks: a Western Carpathian case study." Mineralogia 39, no. 1-2 (2008): 53–66. http://dx.doi.org/10.2478/v10002-008-0004-6.

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Genesis and stability of accessory phosphates in silicic magmatic rocks: a Western Carpathian case studyThe formation of accessory phosphates in granites reflects many chemical and physical factors, including magma composition, oxidation state, concentrations of volatiles and degree of differentiation. The geotectonic setting of granites can be judged from the distribution and character of their phosphates. Robust apatite crystallization is typical of the early magmatic crystallization of I-type granitoids, and of late magmatic stages when increased Ca activity may occur due to the release of

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14

Stone, Maurice. "The Tregonning granite: petrogenesis of Li-mica granites in the Cornubian batholith." Mineralogical Magazine 56, no. 383 (1992): 141–55. http://dx.doi.org/10.1180/minmag.1992.056.383.01.

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AbstractLi-mica (zinnwaldite and/or lepidolite)—topaz—albite granites in the Tregonning—Godolphin pluton and similar rocks in the St. Austell pluton appear to be petrogenetically unrelated to the spatially associated biotite granites. Evidence is provided by lack of development of Li-mica granites at roof zones of biotite granites and markedly different trends and composition fields in bivariate plots such as Li vs. Cs, Rb vs. Sr and Nb vs. Zr. Thus, differentiation of biotite granite magma is unlikely to have generated Li-mica granite magma, as also, on its own, is partial melting of biotite

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15

Förster, H. J. "The chemical composition of uraninite in Variscan granites of the Erzgebirge, Germany." Mineralogical Magazine 63, no. 2 (1999): 239–52. http://dx.doi.org/10.1180/002646199548466.

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AbstractUraninite is widespread as an accessory mineral in the Erzgebirge granites. It occurs throughout the entire comagmatic series of strongly peraluminous S-type Li-mica granites and has been discovered in more evolved transitional I-S type biotite and two-mica granites, but is rare in those of A-type affinity. Textural relationships and chemical ages imply that uraninite is of magmatic origin. Its composition is variable with a proportion of U plus radiogenic Pb between 71 and 99 mol.%. Uraninite has incorporated Th, Y, and the REE in total amounts between 1 and 29 mol.%. Elements such as

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16

Breiter, Karel, and Hans-Jürgen Förster. "Compositional Variability of Monazite–Cheralite–Huttonite Solid Solutions, Xenotime, and Uraninite in Geochemically Distinct Granites with Special Emphasis to the Strongly Fractionated Peraluminous Li–F–P-Rich Podlesí Granite System (Erzgebirge/Krušné Hory Mts., Central Europe)." Minerals 11, no. 2 (2021): 127. http://dx.doi.org/10.3390/min11020127.

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A comprehensive study of monazite–cheralite–huttonite solid solutions (s.s.) and xenotime from the highly evolved, strongly peraluminous P–F–Li-rich Podlesí granite stock in the Krušné Hory Mts., Czech Republic, indicates that, with the increasing degree of magmatic and high-T early post-magmatic evolution, the content of the cheralite component in monazite increases and the relative dominance of middle rare earth elements (MREE) in xenotime becomes larger. Considering the overall compositional signatures of these two accessory minerals in the late Variscan granites of the Erzgebirge/Krušné Ho

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17

Poujol, M., J. Jaguin, J.-F. Moyen, P. Boulvais, and J.-L. Paquette. "Archaean S-Type granites: petrology, geochemistry and geochronology of the Lekkersmaak and Willie plutons, Kaapvaal Craton, South Africa." South African Journal of Geology 124, no. 1 (2021): 87–110. http://dx.doi.org/10.25131/sajg.124.0004.

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Abstract S-type granites correspond to reworking of pre-existing continental material and form by partial melting of (meta)sediments. Early-to-mid Archaean S-type granites are rare and are more frequently found, usually as relatively small intrusions, during the Neoarchaean and the Archaean-Proterozoic transition. In the context of Archaean geology, their paucity is therefore significant, in that it matches the uncommon nature of processes during this period. In this study, we focus on the Late Mesoarchaean Willie pluton and Neoarchaean Lekkersmaak pluton, which crop out to the south of the Mu

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18

Chakraborty, Tuhin. "Tourmaline growth and evolution in S-type granites and pegmatites: constraints from textural, chemical and B-isotopic study from the Gangpur Schist Belt granitoids, eastern India." Geological Magazine 158, no. 9 (2021): 1657–70. http://dx.doi.org/10.1017/s0016756821000224.

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AbstractAn extensive dataset of major- and trace-element and B-isotope composition related to the compositional variation of the tourmalines from the S-type granite and pegmatite from the Upper Bonai and Gangpur Group granitoids, eastern India, is provided. The Gangpur Schist Belt, consisting of the Upper Bonai and Gangpur Group, lies at the eastern end of the Proterozoic Central Indian Tectonic Zone. An attempt to constrain the source of the boron isotope and describe the magmatic–hydrothermal evolution of the granite–pegmatite system is made. The tourmalines record generally low trace-elemen

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19

Williamson, B. J., H. Downes, and M. F. Thirlwall. "The relationship between crustal magmatic underplating and granite genesis: an example from the Velay granite complex, Massif Central, France." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 83, no. 1-2 (1992): 235–45. http://dx.doi.org/10.1017/s0263593300007926.

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ABSTRACTThe Velay granite pluton (Massif Central, France) is the youngest (304 ± 5 Ma) and largest (∼6,900 km2) of the major Massif Central monzogranites/granodiorites and was formed nearly 50 Ma after the cessation of Hercynian continental collision (Pin & Duthou 1990). It is a highly heterogeneous pluton consisting of I-type, high-Sr granites (Sr = 500-900 ppm) with low (+35 to +41) and high (-3 to -5), at its centre, grading into S-type and mixed I-S-type heterogeneous granites of more normal Sr content (100–420 ppm) and higher (+40 to +210) and lower (-3·8 to -7.3) at its margins.The m

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20

Lu, Lei, Yan Liu, Huichuan Liu, Zhi Zhao, Chenghui Wang, and Xiaochun Xu. "Geochemical and Geochronological Constraints on the Genesis of Ion-Adsorption-Type REE Mineralization in the Lincang Pluton, SW China." Minerals 10, no. 12 (2020): 1116. http://dx.doi.org/10.3390/min10121116.

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Granites are assumed to be the main source of heavy rare-earth elements (HREEs), which have important applications in modern society. However, the geochemical and petrographic characteristics of such granites need to be further constrained, especially as most granitic HREE deposits have undergone heavy weathering. The LC batholith comprises both fresh granite and ion-adsorption-type HREE deposits, and contains four main iRee (ion-adsorption-type REE) deposits: the Quannei (QN), Shangyun (SY), Mengwang (MW), and Menghai (MH) deposits, which provide an opportunity to elucidate these characterist

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21

Breiter, Karel, Claudio Nery Lamarão, Régis Munhoz Krás Borges, and Roberto Dall'Agnol. "Chemical characteristics of zircon from A-type granites and comparison to zircon of S-type granites." Lithos 192-195 (April 2014): 208–25. http://dx.doi.org/10.1016/j.lithos.2014.02.004.

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22

Gion, Austin M., Philip M. Piccoli, and Philip A. Candela. "Constraints on the Formation of Granite-Related Indium Deposits." Economic Geology 114, no. 5 (2019): 993–1003. http://dx.doi.org/10.5382/econgeo.4668.

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Abstract The use of indium in modern technologies has grown in recent decades, creating a growth in indium demand; thus, there is a need to constrain the spatial and temporal distribution of indium-bearing, granite-related deposits. Toward this end, a conceptual model and exploration vectors for the formation of granite-related indium deposits have been developed. The magmatic-hydrothermal system is modeled by consideration of crystal-melt and vapor-melt equilibria. The model calculates the efficiency of removal of indium from a melt into a volatile phase, which may serve as a component of an

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23

A. Ghani, Azman. "Geochemical characteristics of S- and I-Type Granites: Example from Peninsular Malaysia granites." Bulletin of the Geological Society of Malaysia 51 (June 1, 2005): 123–34. http://dx.doi.org/10.7186/bgsm51200515.

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24

Lee, Seung Hwan, Chang Whan Oh, and Soolim Jung. "Jurassic Igneous Activity in the Yuseong Area on the Southern Margin of the Gyeonggi Massif, Korean Peninsula, and Its Implications for the Tectonic Evolution of Northeast Asia during the Jurassic." Minerals 11, no. 5 (2021): 466. http://dx.doi.org/10.3390/min11050466.

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Jurassic dioritic to granitic igneous rocks extensively intrude into the southern Korean Peninsula, including the Yuseong area located at the boundary between the southern margin of the Gyeonggi Massif and the northern margin of the Okcheon Belt. In this study, the petrogenesis and sources of Jurassic igneous rocks in the Yuseong area were investigated. The U–Pb zircon age data from the Jurassic plutonic rocks in the Yuseong area give two igneous ages, ca. 178–177 Ma and 169–168 Ma, indicating that two stages of igneous activity occurred in the Yuseong area during the Jurassic. The geochemical

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25

Yu, Zhi-Feng, Qi-Ming Peng, Zheng Zhao, et al. "Geochronology, Geochemistry, and Geodynamic Relationship of the Mafic Dykes and Granites in the Qianlishan Complex, South China." Minerals 10, no. 12 (2020): 1069. http://dx.doi.org/10.3390/min10121069.

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The Qianlishan complex, located in Hunan Province of South China, is closely associated with intense W-dominated polymetallic mineralization. The Qianlishan complex is composed of three phases: the main-phase porphyritic and equigranular granites, granite porphyry, and mafic dykes. Geochronologically, the zircon U-Pb dating results show that the porphyritic and equigranular granites have ages of approximately 159 and 158 Ma, respectively, similar to those of mafic dykes (approximately 158 Ma), while the granite porphyry was formed later at approximately 145 Ma. Geochemically, the mafic dykes a

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26

Yang, Xue-Ming, Derek Drayson, and Ali Polat. "S-type granites in the western Superior Province: a marker of Archean collision zones." Canadian Journal of Earth Sciences 56, no. 12 (2019): 1409–36. http://dx.doi.org/10.1139/cjes-2018-0056.

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Detailed field observations indicate that Neoarchean S-type granites were emplaced along and (or) proximal to some terrane (tectonic) boundary zones in the western Superior Province, southeastern Manitoba. These S-type granites are characterized by the presence of at least one diagnostic indicator mineral, such as sillimanite, cordierite, muscovite, garnet, and tourmaline. They are medium- to high-K calc-alkaline, moderately to strongly peraluminous (ANKC >1.1), and contain >1% CIPW normative corundum. Compared with more voluminous, older I-type granitoids in tonalite–trondhjemite–granod

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27

Harding, K. L., W. A. Morris, S. J. Balch, P. Lapointe, and A. G. Latham. "A comparison of magnetic character and alteration in three granite drill cores from eastern Canada." Canadian Journal of Earth Sciences 25, no. 8 (1988): 1141–50. http://dx.doi.org/10.1139/e88-112.

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Bulk magnetic susceptibility (BMS) measurements have been made on granite drill cores from the St. George batholith (New Brunswick), the South Mountain batholith (Nova Scotia), and the Wedgeport pluton (Nova Scotia). The primary magnetite concentrations of the two Nova Scotia cores are statistically indistinguishable, thus lending support to the hypothesis that the Wedgeport pluton, despite being 50 Ma younger, is a satellite of the South Mountain batholith.The St. George core has a primary magnetite concentration over 30 times greater than the Nova Scotia cores, but low-temperature alteration

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28

Kohút, Milan, Pavel Uher, Marián Putiš, et al. "SHRIMP U-Th-Pb zircon dating of the granitoid massifs in the Malé Karpaty Mountains (Western Carpathians): evidence of Meso-Hercynian successive S- to I-type granitic magmatism." Geologica Carpathica 60, no. 5 (2009): 345–50. http://dx.doi.org/10.2478/v10096-009-0026-z.

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SHRIMP U-Th-Pb zircon dating of the granitoid massifs in the Malé Karpaty Mountains (Western Carpathians): evidence of Meso-Hercynian successive S- to I-type granitic magmatismRepresentative granitic rock samples from the Malé Karpaty Mountains of the Western Carpathians (Slovakia) were dated by the SHRIMP U-Th-Pb isotope method on zircons. Oscillatory zoned zircons revealed concordant Mississippian magmatic ages: 355±5 Ma in Bratislava granodiorite, and 347±4 Ma in Modra tonalite. The results document nearly synchronous, successive Meso-Hercynian plutonic events from S-type to I-type granites

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29

Mustafa, Moch Akrom, and Ediar Usman. "ANALISIS PERBANDINGAN GEOKIMIA GRANIT DAN SEDIMEN DASAR LAUT DI PULAU SINGKEP BAGIAN TIMUR, PROVINSI KEPULAUAN RIAU." JURNAL GEOLOGI KELAUTAN 11, no. 3 (2016): 131. http://dx.doi.org/10.32693/jgk.11.3.2013.237.

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Hasil analisis kimia secara umum menunjukkan kesamaan antara granit dan sedimen permukaan dasar laut. Perbedaan hanya pada dua unsur, yaitu Al2O3 dan Fe2O3; kandungan Al2O3 pada granit antara 12,63 - 15,58% dan Fe2O3 antara 1,26 - 1,78%, sedangkan sedimen permukaan dasar laut Al2O3 berkisar antara 2,10 - 3,29% dan Fe2O3 antara 7,57 - 12,88%. Hasil analisis pada Diagram Harker menunjukkan penyebaran granit dan sedimen dasar laut membentuk pola searah, mengiindikasikan pola ko-magmatik. Selanjutnya, untuk menentukan tipe granit di P. Singkep dalam kaitannya dengan kandungan timah, dua diag

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30

Baltatzis, E., J. Esson, and P. Mitropoulos. "Geochemical characteristics and petrogenesis of the main granitic intrusions of Greece: an application of trace element discrimination diagrams." Mineralogical Magazine 56, no. 385 (1992): 487–501. http://dx.doi.org/10.1180/minmag.1992.056.385.05.

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AbstractGeochemical investigation of samples from 20 granitic intrusions in six tectonic zones of the Hellenides shows that both I-type and S-type granites occur in the region. The I-type granites from four of the zones, namely the Rhodope Massif (RM), the Serbomacedonian Massif (SMM), the Perirhodope Zone (PRZ) and the Attico-cycladic Zone (ACZ), show some systematic differences in their geochemistry. In particular, the Rb, Y, Nb, K and Ti contents increase in the sequence PRZ, SMM, RM and ACZ. The PRZ granites are of Jurassic age, those of the SMM and RM are Eocene to Oligocene and the ACZ o

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31

Zi, Jian-Wei, Birger Rasmussen, Janet R. Muhling, Wolfgang D. Maier, and Ian R. Fletcher. "U-Pb monazite ages of the Kabanga mafic-ultramafic intrusions and contact aureoles, central Africa: Geochronological and tectonic implications." GSA Bulletin 131, no. 11-12 (2019): 1857–70. http://dx.doi.org/10.1130/b35142.1.

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AbstractMafic-ultramafic rocks of the Kabanga-Musongati alignment in the East African nickel belt occur as Bushveld-type layered intrusions emplaced in metasedimentary sequences. The age of the mafic-ultramafic intrusions remains poorly constrained, though they are regarded to be part of ca. 1375 Ma bimodal magmatism dominated by voluminous S-type granites. In this study, we investigated igneous monazite and zircon from a differentiated layered intrusion and metamorphic monazite from the contact aureole. The monazite shows contrasting crystal morphology, chemical composition, and U-Pb ages. Mo

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CHEN, Y. D., R. C. PRICE, and A. J. R. WHITE. "Inclusions in Three S-Type Granites from Southeastern Australia." Journal of Petrology 30, no. 5 (1989): 1181–218. http://dx.doi.org/10.1093/petrology/30.5.1181.

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33

Villaros, A., G. Stevens, and I. S. Buick. "Origins of the S-type Cape Granites (South Africa)." Geochimica et Cosmochimica Acta 70, no. 18 (2006): A673. http://dx.doi.org/10.1016/j.gca.2006.06.1259.

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34

Daif, Menana, and Abderrahmane Toubal. "Northeastern extension of Neogene magmatism in Africa: Evidence from the Zitouna rhyolite, Algeria." Trabajos de Geología 35, no. 35 (2017): 29. http://dx.doi.org/10.17811/tdg.35.2015.29-40.

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Abstract: The Zitouna rhyolite is the easternmost representative of the Neogene magmatism in the Northeast of Algeria. It is composed of two intrusive rhyolitic apexes: the first outcrop is poorly known and not dated; the second one is greater, and not previously described. It is a well-differentiated rock that does not exceed 12 Ma (Post-Serravallian). Geochemical data show that it belongs to S-type granites with a high peraluminous character corroborating a crustal protolith. The Zitouna rhyolite is considered as the continuation of other neighbouring magmatic episodes and can be related to

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Charoy, Bernard, and Pierre Barbey. "Ferromagnesian silicate association in S-type granites: the Darongshan granitic complex (Guangxi, South China)." Bulletin de la Société Géologique de France 179, no. 1 (2008): 13–27. http://dx.doi.org/10.2113/gssgfbull.179.1.13.

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Abstract The late Indosinian Darongshan granite complex (Guangxi Province, South China) consists mainly of three plutons (Taima, Jiuzhou and Darongshan), with coarse-grained to subvolcanic rock types. There is a rough mineral evolution from the western to the eastern part of the complex, with ferromagnesian magmatic silicates sequentially distributed : Opx+Crd±Bt (Taima), Opx+Grt+Bt+Crd (Jiuzhou) and Bt+Crd (Darongshan). Restitic, cumulative or xenocrystic minerals (mainly Crd with fibrolite+spinel inclusions, Grt and probably Opx in some cases) are also encountered. Mineralogical, chemical an

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Petrík, I., Š. Čík, M. Miglierini, T. Vaculovič, I. Dianiška, and D. Ozdín. "Alpine oxidation of lithium micas in Permian S-type granites (Gemeric unit, Western Carpathians, Slovakia)." Mineralogical Magazine 78, no. 3 (2014): 507–33. http://dx.doi.org/10.1180/minmag.2014.078.3.03.

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AbstractLithium micas of the zinnwaldite and phengite–Li-phengite series occur as characteristic minerals in Permian Li-F-(P) granites of the western Gemeric unit (Western Carpathians) accompanied by topaz, tourmaline, Nb, Ta, Ti, Sn oxides and aluminophosphates. The calculated Li2O contents of all the mica analysed, together with Rb2O and Cs2O were confirmed by LA-ICP-MS analyses for all the identified micas. Samples from three localities were investigated: two surficial (Surovec, Vrchsúl’ová); and one drill hole (Dlhá dolina). Zinnwaldite (polylithionite) occurs in the upper level of the Dlh

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Karipi, S., B. Tsikouras, and K. Hatzipanagiotou. "PETROLOGY AND GEOCHEMISTRY OF GRANITIC PEBBLES IN THE PARNASSOS FLYSCH AT ITI MOUNTAIN, CONTINENTAL CENTRAL GREECE." Bulletin of the Geological Society of Greece 40, no. 2 (2007): 816. http://dx.doi.org/10.12681/bgsg.16724.

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Granite rocks occur as pebbles within the Parnassos flysch deposits, in the area of Iti (Central Greece). The granites are per aluminous, calcic rocL· with S-type characteristics. Geochemical features reveal that these rocL· are not co-genetic to the Iti ophiolite but they have been derived from magmas affected by a subduction component. They display common characteristics with VAG-type lithologies. Geochemically, they mostly resemble nearby granite clastsfrom a Triassic flyschoid from Evia (Liri Unit), and lesser those within the Parnassos flysch at Amfissa and Pliocene fluvial deposits at Pa

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Breiter, Karel, Nina Gardenová, Viktor Kanický, and Tomáš Vaculovič. "Gallium and germanium geochemistry during magmatic fractionation and post-magmatic alteration in different types of granitoids: a case study from the Bohemian Massif (Czech Republic)." Geologica Carpathica 64, no. 3 (2013): 171–80. http://dx.doi.org/10.2478/geoca-2013-0018.

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Abstract Contents of Ga and Ge in granites, rhyolites, orthogneisses and greisens of different geochemical types from the Bohemian Massif were studied using inductively coupled plasma mass spectrometry analysis of typical whole-rock samples. The contents of both elements generally increase during fractionation of granitic melts: Ga from 16 to 77 ppm and Ge from 1 to 5 ppm. The differences in Ge and Ga contents between strongly peraluminous (S-type) and slightly peraluminous (A-type) granites were negligible. The elemental ratios of Si/1000Ge and Al/1000Ga significantly decreased during magmati

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Champion, David C., and Robert J. Bultitude. "The geochemical and SrNd isotopic characteristics of Paleozoic fractionated S-types granites of north Queensland: Implications for S-type granite petrogenesis." Lithos 162-163 (March 2013): 37–56. http://dx.doi.org/10.1016/j.lithos.2012.11.022.

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Ferenc, Štefan, Martin Števko, Tomáš Mikuš, Stanislava Milovská, Richard Kopáčik, and Eva Hoppanová. "Primary Minerals and Age of The Hydrothermal Quartz Veins Containing U-Mo-(Pb, Bi, Te) Mineralization in the Majerská Valley near Čučma (Gemeric Unit, Spišsko-Gemerské Rudohorie Mts., Slovak Republic)." Minerals 11, no. 6 (2021): 629. http://dx.doi.org/10.3390/min11060629.

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An occurrence of vein U-Mo mineralization is located in the Majerská valley near Čučma, about 7 km to the NNE of the district town of Rožňava (Eastern Slovakia). Mineralization is hosted in the acidic metapyroclastics of the Silurian Bystrý Potok Fm. (Gemeric Unit), and originated in the following stages: (I.) quartz I, fluorapatite I; (II.) quartz II, fluorapatite II, zircon, rutile chlorite, tourmaline; (III.) uraninite, molybdenite, U-Ti oxides; (IV.) pyrite I, ullmannite, gersdorffite, cobaltite; (Va.) galena, bismuth, tetradymite, joséite A and B, Bi3(TeS)2 mineral phase, (BiPb)(TeS) mine

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Ahnaf, Jemi Saputra, Aton Patonah, and Haryadi Permana. "Petrogenesis of Volcanic Arc Granites from Bayah Complex, Banten, Indonesia." Journal of Geoscience, Engineering, Environment, and Technology 4, no. 2 (2019): 104. http://dx.doi.org/10.25299/jgeet.2019.4.2.3171.

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This research aimed to reveal the petrogenesis of granitic rocks of Bayah Complex starting from magma differentiation to exposing event, this research also intended to determine the tectonic environment. The methods carried out in this research include field observation, petrographic analysis using polarized light microscopy, and geochemical analysis using X-Ray Fluorescence (XRF) and Inductively Coupled Mass Spectrometry (ICP-MS). Petrographic analysis shows that Bayah granitic rocks are composed of quartz, plagioclase, and K-feldspar while the rest are amphibole, biotite, sericite, chl

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Robb, L. J., F. M. Meyer, C. J. Hawkesworth, and N. J. Gardiner. "Petrogenesis of Archaean granites in the Barberton region of South Africa as a guide to early crustal evolution." South African Journal of Geology 124, no. 1 (2021): 111–40. http://dx.doi.org/10.25131/sajg.124.0021.

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ABSTRACT The Barberton region of South Africa is characterized by a broad variety of granite types that range in age from ca. 3.5 Ga to 2.7 Ga and reflect the processes involved in the formation of Archaean continental crust on the Kaapvaal Craton. These granites are subdivided into three groups, as follows: A tonalite-trondhjemite-granodiorite (TTG) suite diapirically emplaced at 3 450 Ma and 3 250 Ma into pre-existing metamorphosed greenstone belt material. TTG melts were derived from melting amphibolite in the lower crust, with individual plutons being emplaced at various crustal levels. Th

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Montenegro, Teresita, Julieta Wul, Mónica López de Luchi, Enrico Ribacki, and Robert B. Trumbull. "Chemical and boron isotope composition of tourmaline from pegmatites and their host rocks, Sierra de San Luis, Argentina." Canadian Mineralogist 59, no. 3 (2021): 467–94. http://dx.doi.org/10.3749/canmin.2000072.

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ABSTRACT We report chemical and B-isotope analyses of tourmaline from Ordovician S-type granites, an aplite, LCT-type (lithium-cesium-tantalum) pegmatites, and metamorphic rocks of the Conlara Metamorphic Complex (CMC) in Sierra de San Luis, Argentina. For comparison, tourmaline from three LCT pegmatites in the adjacent Pringles Metamorphic Complex was also studied. Metamorphic tourmaline from the CMC has intermediate schorl–dravite compositions, with variable Fe# [100 * Fe/(Fe + Mg)] from 32 to 79. The δ11B values range from –14.8 to –8.9‰, which are typical values for continental metasedimen

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Collins, W. J., and S. W. Richards. "Geodynamic significance of S-type granites in circum-Pacific orogens." Geology 36, no. 7 (2008): 559. http://dx.doi.org/10.1130/g24658a.1.

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Finger, Fritz, and David Schiller. "Lead contents of S-type granites and their petrogenetic significance." Contributions to Mineralogy and Petrology 164, no. 5 (2012): 747–55. http://dx.doi.org/10.1007/s00410-012-0771-3.

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Darvishi, Esmaiel, Mahmoud Khalili, Roy Beavers, and Mohammad Sayari. "Petrology and mineral chemistry of peraluminous Marziyan granites, Sanandaj-Sirjan metamorphic belt (NW Iran)." Geologica Carpathica 66, no. 5 (2015): 361–74. http://dx.doi.org/10.1515/geoca-2015-0031.

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AbstractThe Marziyan granites are located in the north of Azna and crop out in the Sanandaj-Sirjan metamorphic belt. These rocks contain minerals such as quartz, K-feldspars, plagioclase, biotite, muscovite, garnet, tourmaline and minor sillimanite. The mineral chemistry of biotite indicates Fe-rich (siderophyllite), low TiO2, high Al2O3, and low MgO nature, suggesting considerable Al concentration in the source magma. These biotites crystallized from peraluminous S-type granite magma belonging to the ilmenite series. The white mica is rich in alumina and has muscovite composition. The peralum

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García-Arias, Marcos. "Decoupled Ca and Fe + Mg content of S-type granites: An investigation on the factors that control the Ca budget of S-type granites." Lithos 318-319 (October 2018): 30–46. http://dx.doi.org/10.1016/j.lithos.2018.08.004.

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Frascá, Maria H. B. O. "Considerations on Granite Dimension Stone Porosity and Modifications from Quarry to Slabs." Key Engineering Materials 548 (April 2013): 124–31. http://dx.doi.org/10.4028/www.scientific.net/kem.548.124.

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This paper presents the physical and petrographic characterization of selected granitic rock types from several quarries in Brazil and aims to contribute to a better knowledge of the engineering properties of granite dimension stone, focusing on laboratory physical determinations and the possible changes that would occur along processing operations, i.e., from the quarried rock to the polished slabs or tiles. The tests – petrography and porosity determinations – led to the collection of parameters of in natura and processed rock material, respectively from specimens obtained from small cubic b

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Wyborn, L. A. I., D. Wyborn, R. G. Warren, and B. J. Drummond. "Proterozoic granite types in Australia: implications for lower crust composition, structure and evolution." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 83, no. 1-2 (1992): 201–9. http://dx.doi.org/10.1017/s0263593300007896.

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ABSTRACTGranites and their associated comagmatic felsic volcanic rocks occur in most Proterozoic provinces of Australia. Using multi-element, primordial-mantle-normalised abundance diagrams and various petrological characteristics, Australian Proterozoic granites can be subdivided into five groups: (i) I-type, Sr-depleted, Y-undepleted, restite-dominated, (ii) I- type, Sr-depleted, Y-undepleted, fractionated, low in incompatible elements, (iii) I-type Sr-depleted, Y-undepleted, enriched in incompatible elements (anorogenic granites), (iv) I-type, Sr-undepleted, Y-depleted, (v) S-type, Sr-deple

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Stone, Maurice. "The Lundy granite: a geochemical and petrogenetic comparison with Hercynian and Tertiary granites." Mineralogical Magazine 54, no. 376 (1990): 431–46. http://dx.doi.org/10.1180/minmag.1990.054.376.09.

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AbstractNew chemical data show that the two main granite types (G1 and G2) cannot be discriminated, but that microgranite sheets/dykes (G3) are significantly different and more evolved, largely as a result of biotite, accessory mineral, and plagioclase fractionation. The Lundy granite is similar to other Tertiary granites of Scotland and Ireland, in age, setting, possible high-temperature mineralogy, relationship to basic magmatism, and REE patterns. These features and a highly evolved chemistry suggest derivation from an unexposed more ‘primitive’ granite that, in turn, had a basaltic parenta

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