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Relevant bibliographies by topics / Nappes (Geology) Gneiss Granite Geology

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Academic literature on the topic 'Nappes (Geology) Gneiss Granite Geology'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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Journal articles on the topic "Nappes (Geology) Gneiss Granite Geology"

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Bussien, Denise, François Bussy, Henri Masson, Tomas Magna, and Nickolay Rodionov. "Variscan lamprophyres in the Lower Penninic domain (Central Alps): age and tectonic significance." Bulletin de la Société Géologique de France 179, no. 4 (2008): 369–81. http://dx.doi.org/10.2113/gssgfbull.179.4.369.

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Abstract Lamprophyre dykes have been recently discovered in blocks of gneiss embedded in a calcschist formation of wildflysch type that forms the top of the Mesozoic-Tertiary metasedimentary cover of the Antigorio nappe (the Teggiolo zone) in the Val Bavona (Lower Penninic, NW Ticino, Switzerland). The presence of the lamprophyres gives a clue to the possible source of these blocks. Similar dykes occur in the N part of the Maggia nappe where they are intruded into the Matorello granite and the surrounding gneisses. We studied these lamprophyres at two localities in the Teggiolo zone (Tamierpas

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Friend, C. R. L., and A. P. Nutman. "The geology and structural setting of the Proterozoic Ammassalik Intrusive Complex, East Greenland." Rapport Grønlands Geologiske Undersøgelse 146 (December 31, 1989): 41–45. http://dx.doi.org/10.34194/rapggu.v146.8094.

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The rocks of the Ammassalik area comprise reworked Archaean gneisses and a variety of mainly pelitic to psammitic Proterozoic metasediments. Proterozoic deformation caused thrust intercalation of the rocks and folded them into overturned, southerly directed nappes. Three dioritic centres, collectively named the 'Ammassalik Intrusive Complex' in this paper, were emplaced into a tract occupied by metasediments, causing extensive anatexis. The granitic liquids produced from this resulted in magma mixing with the still liquid diorite; they also formed discrete sheets of augen granite intruding the

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Faure, Michel, Xavier Charonnat, Alain Chauvet, et al. "Tectonic evolution of the Cevennes para-autochthonous domain of the Hercynian French Massif Central and its bearing on ore deposits formation." Bulletin de la Société Géologique de France 172, no. 6 (2001): 687–96. http://dx.doi.org/10.2113/172.6.687.

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Abstract The Cevennes area belongs to the para-autochthonous domain of the Hercynian Belt of the French Massif Central. Three lithological series, namely: sandstone-pelite, black micaschist and gneiss-micaschist, are identified. They form an imbrication of five tectonic units which overthrust the unmetamorphosed Viganais Paleozoic units to the south and the gneissic Mamejean Unit to the north. The structural, metamorphic and magmatic evolution of the Cevennes area is characterized by three events, namely: (1) southward shearing coeval to a MP/MT metamorphism dated around 340 Ma; (2) post nappe

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Faure, Michel, Eugène Be Mezeme, Alain Cocherie, Jérémie Melleton, and Philippe Rossi. "The South Millevaches Middle Carboniferous crustal melting and its place in the French Variscan belt." Bulletin de la Société Géologique de France 180, no. 6 (2009): 473–81. http://dx.doi.org/10.2113/gssgfbull.180.6.473.

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AbstractSeveral episodes of crustal melting are now well identified in the Variscan French Massif Central. Middle Devonian (ca 385-375 Ma) migmatites are recognized in the Upper and Lower Gneiss Units involved in the stack of nappes. Late Carboniferous migmatites (ca 300 Ma) are exposed in the Velay Massif only and Middle Carboniferous migmatites crop out in the Para-autochthonous Unit and southern Fold-and-Thrust Belt. In the SW part of the Massif Central, the South Millevaches massif exposes migmatites developed at the expense of ortho- and paragneiss. They form kilometer-sized septa within

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Alcock, James E., José R. Martínez Catalán, Ricardo Arenas, and Alejandro Díez Montes. "Use of thermal modeling to assess the tectono-metamorphic history of the Lugo and Sanabria gneiss domes, Northwest Iberia." Bulletin de la Société Géologique de France 180, no. 3 (2009): 179–97. http://dx.doi.org/10.2113/gssgfbull.180.3.179.

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Abstract The Lugo and Sanabria domes in Northwest Iberia have well constrained metamorphic and structural histories. Both occur in the Iberian autochthon and resulted from late-Variscan extensional collapse following crustal thickening related to the Variscan collision. The two domes developed beneath large thrust sheets, are cored by sillimanite-orthoclase anatectic gneiss, preserve evidence of a steep thermal gradient (≈ 1 °C MPa−1), and exhibit a distinct decrease in metamorphic grade to the east in the direction of nappe movement. Geochronological evidence indicates that the lower crust me

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Vincent, E., P. Dominic, and MM Kure. "Assessment of Geotechnical Parameters of Lateritic Soil of Jos and Environs, for Civil Engineering Constructions North Central part of Nigeria." NIGERIAN ANNALS OF PURE AND APPLIED SCIENCES 3, no. 3b (2020): 222–39. http://dx.doi.org/10.46912/napas.209.

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Due to failures of Civil Engineering structures in Jos and its Environs, Geotechnical parameters of Lateritic soils were carried out in order to determine its engineering properties for civil engineering construction. The methods involved are; reconnaissance survey, site works, laboratory tests based on British Standard (BS) methods and interpretation of the results. The laboratory test of the soils revealed that the Atterberg limit; Liquid limit (LL) ranged from 33.0% to 45.0%, Plastic limit (PL) from 16.23% to 26.37%, and Plasticity index (PI) from 8.63% to 22.67%. The percentage passing fro

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Manby, G. M. "The petrology of the Harkerbreen Group, Ny Friesland, Svalbard: protoliths and tectonic significance." Geological Magazine 127, no. 2 (1990): 129–46. http://dx.doi.org/10.1017/s0016756800013820.

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AbstractThe late Precambrian–early Palaeozoic rocks of Ny Friesland, which have been subjected to Caledonian deformation and metamorphism, constitute part of the Eastern Province or Terrane of Svalbard. The Harkerbreen group and other divisions of the Stubendorffbreen supergroup form a high-grade and intensely deformed core complex to this terrane which is bounded to the west by the Billefjorden Fault Zone and to the east by a major north–south shear zone. The Stubendorffbreen rocks exhibit two gneissic foliations, one axial planar to a large scale, F1 fold nappe closing to the east and the ot

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Glukhovskiy, M. Z., Ye V. Pavlovskiy, and V. M. Moralev. "RING STRUCTURES AND GRANITE-GNEISS DOMES." International Geology Review 28, no. 10 (1986): 1202–12. http://dx.doi.org/10.1080/00206818609466357.

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Duguet, Manuel, and Michel Faure. "Successive shearing tectonics during the Hercynian collisional evolution of the southwestern French Massif Central." Bulletin de la Société Géologique de France 175, no. 1 (2004): 49–59. http://dx.doi.org/10.2113/175.1.49.

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Abstract In the French Massif Central, the Devonian-Carboniferous tectonic evolution of the Rouergue-Albigeois area is characterized by three phases of low-angle ductile shearing. The first event D1, which occurred probably in the Lower Devonian, is responsible for the south-westward thrusting of the high metamorphic Lévézou nappe which belongs to the Upper Gneiss Unit above the Lower Gneiss Unit overlying itself the Para-autochthonous Unit, (locally called the St-Serninsur-Rance nappe). In the late Devonian-early Carboniferous, this stack of nappes is reworked by a second event, D2, charact

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Doggart, S., P. H. Macey, and D. Frei. "Lithostratigraphy of the Mesoproterozoic Twakputs Gneiss." South African Journal of Geology 124, no. 3 (2021): 783–94. http://dx.doi.org/10.25131/sajg.124.0041.

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Abstract The Twakputs Gneiss is a garnetiferous, K-feldspar megacrystic, biotite granite-granodiorite orthogneiss. It represents a major unit in the Kakamas Domain of the Mesoproterozoic Namaqua-Natal Metamorphic Province extending about 250 km between Riemvasmaak in South Africa and Grünau in southern Namibia. The Twakputs Gneiss occurs as foliation-parallel, sheet-like bodies tightly infolded together with granulite-facies paragneisses into which it intrudes along with a variety of other pre-tectonic granite and leucogranite orthogneisses. These rocks were subsequently intruded by late-tecto

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Dissertations / Theses on the topic "Nappes (Geology) Gneiss Granite Geology"

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Curtis, David. "Variations in nappe related fabric orientations during Paleopropterozoic ductile reworking of Archean basement, central Laramie Mountains, southeastern Wyoming /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1421128.

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Fedo, Christopher M. "Geologic evolution of the Archean Buhwa Greenstone Belt and surrounding granite-gneiss terrane, southcentral Zimbabwe." Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06062008-164845/.

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Lawther, Susan E. M. "The effects of fluid flow through faults in granite gneiss exhumed from seismogenic depths." Thesis, University of Glasgow, 2012. http://theses.gla.ac.uk/3374/.

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Fault zones are ubiquitous structures throughout the Earth’s crust and as a fault evolves it can significantly influence the rheological and hydrological properties of the crust. Fluid flow through fault zones is typically associated with fault-fluid-rock interactions and these interactions can affect the mineralogy, strength and evolution of a fault zone. In this study, field mapping is combined with petro-physical and stable isotopic analyses of the fault rock to evaluate the fault-fluid-rock interactions that occur within different fault zones, and the effects of these reactions on fault zo

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Linklater, Michael Anthony Leonard Flanders. "The exploration for and possible genesis of, some Archaean granite/gneiss-hosted gold deposits in the Pietersburg granite-greenstone terrane." Thesis, Rhodes University, 1992. http://hdl.handle.net/10962/d1005557.

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Abstract The gold mineralization event within Archaean granite-greenstone terranes occurred during the late Archaean, and followed the intrusion of syn- to late-tectonic granitic plutons into previously deformed greenstone belts. An Archaean granite/gneiss-hosted gold deposit, in terms of this project, is classified as having a gold-assay cutoff of 1g/metric ton over widths of at least several metres, or higher grades over narrower widths and/or verbal descriptions that indicate such values. Fluid inclusion studies and isotopic data identify two possible origins for the auriferous fluids; name

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Holmberg, Johanna. "Pressure-Temperature-time Constraints on the Deep Subduction of the Seve Nappe Complex in Jämtland and southern Västerbotten, Scandinavian Caledonides." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-334822.

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The Scandinavian Caledonides are defined by long transported thrust sheets emplaced in a nappe stratigraphic succession onto the Paleozoic Baltica platform, as a result of the collision between the paleo-continents Baltica and Laurentia. This Palaeozoic collisional orogen is nowadays exposed at mid-crustal levels, thus provides an excellent ground for in situ studies of mountain building processes. The complex nappe stack is subdivided into the Lower, Middle, Upper and Uppermost allochthons. The tectonostratigraphic highest unit in the Middle Allochthon is the Seve Nappe Complex (SNC), itself

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Johnson, Christopher M., and Daalen Christopher M. Van. "Mineralogy and geochemistry of Late Archean and Paleoproterozoic granites and pegmatites in the Northern Penokean terrane of Marquette and Dickinson Counties, Michigan." ScholarWorks@UNO, 2015. http://scholarworks.uno.edu/td/2088.

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This thesis focuses on mineralogy, geochemistry, and origin of eight pegmatites and two spatially associated granites of Late Archean and Paleoproterozoic ages located in Marquette and Dickinson Counties, Michigan. Biotite geochemistry reveals that both granites and all pegmatites are peraluminous and have an orogenic signature. However, bulk composition reveals the Humboldt granite is a peraluminous A-type granite and the Bell Creek granite is a peraluminous mix between I-, S-, and A-type granites. The Republic Mine pegmatite appears to be geochemically similar to the Bell Creek granite and G

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Rai, Santa Man. "Les nappes de Katmandou et du Gosainkund, Himalaya du Népal central : (étude cartographique, structurale, métamorphique, géochimique et radiochronologique)." Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10195.

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Au nepal central, dans les regions de katmandou et du gosainkund, une etude geologique multidisciplinaire a ete menee afin de caracteriser et de distinguer les nappes cristallines de katmandou (bas-himalaya) et du gosainkund (haut-himalaya), du moyen pays. Deux deformations principales ont ete reconnues : l'une syn-metamorphique, enregistree par des microstructures (lineation d'etirement, structures c-s, etc. ), l'autre post-metamorphique, enregistree par un axe anticlinal, oriente globalement w-e et par des plis orientes nne-ssw. Les conditions p-t syn-metamorphique different entre katmandou

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Scogings, Andrew John. "The geology of the Ngoye granite gneiss formation." Thesis, 1985. http://hdl.handle.net/10413/9994.

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The Ngoye Granite Gneiss Formation is located in the Natal sector of the Proterozoic Namaqua-Natal Mobile Belt, about 10 km southwest of Empangeni. It forms a prominent east-west trending elongate whalebacked massif some 30 km in length, within amphibolitic gneisses and schists of the Tugela Group. A suite of twelve different, gneissic granitoids has been-recognised within the Ngoye Formation on the basis of field relationships, mineralogy and supportive geochemistry. They range in composition from peraluminous syenite to peralkaline granite. Peraluminous varieties are typically muscovite and

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Terry, Michael Patrick. "Structural and thermal evolution of Baltica basement and infolded cover nappes on Nordoyane and their bearing on mechanisms for production and exhumation of high-pressure rocks, Western Gneiss Region, Norway." 2000. https://scholarworks.umass.edu/dissertations/AAI9988847.

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Detailed mapping, U-Th-Pb monazite geochronology was combined with structural and metamorphic analysis on Nordøyane to date the thermotectonic evolution of UHP and HP units metamorphosed during the Late Silurian-Early Devonian collision between Baltica and Laurentia. The structurally higher unit contains microdiamond-bearing kyanite-garnet-graphite gneiss and associated kyanite eclogites that independently indicate probable diamond-forming conditions of 820°C, 39 kbar. Eclogitized mylonite from the Proterozoic Haram Gabbro, in the structurally lower unit, yields 780°C and 18 kbar. In situ mona

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Books on the topic "Nappes (Geology) Gneiss Granite Geology"

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Hölttä, Pentti. The Archaean of the Karelia Province in Finland. Geological Survey of Finland, 2012.

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Book chapters on the topic "Nappes (Geology) Gneiss Granite Geology"

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Fakeye, Attah, Olusegun Ige, and Olufemi Ogunsanwo. "Multivariate Assessment of California Bearing Ratio with Contrasted Geotechnical Properties of Soils in Ilorin-Lokoja Highway." In Engineering Geology. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.93523.

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California Bearing Ratio (CBR) is an important parameter used in designing pavement layers in road construction but testing this parameter requires time, labor, and huge cost. The study therefore applies multivariate approach to evaluate CBR based on contrasted geotechnical parameters along Ilorin-Lokoja highway. The results obtained showed that the migmatite-gneiss-derived soils are slightly more fines (< 0.075 mm; 7.4–59.6%), more plastic (PI; 1.6–39%), and have low strength (MDD = 1.8 mg/m3; CBR = 29.0%) than the metasediments (11–57.7%, 2.0–30%, 1.6 mg/m3, 23.6%) and older granite soils (8.2–32.7%, 2.6–13.4%, 1.7 mg/m3, 27.8%), respectively. The principal component analysis (PCA) revealed three major components (eigenvalues >1) which accounted for 83.8% of the total variance at the rate of 33.4, 14.7, and 11.4%. Major contributing variables for the components were fines (R = 0.87), plasticity index (R = 0.7), and coarse sand (R = 0.67%). Spatial distribution of these groups established interplay of sediment-gradation and moisture-connection evident in hierarchical cluster analysis that revealed patterns of homogeneity and soil relationships. Regression analysis established five models from predictor variables such as fines, activity, free swell, liquid and plastic limits, weighted plasticity index, optimum moisture content, and maximum dry density with the coefficient of determination (R2 = 0.33) and root mean square error (RMSE) of 7.80.

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Bickle, M. J., J. L. Orpen, E. G. Nisbet, and A. Martin. "Structure and metamorphism of the Belingwe Greenstone Belt and adjacent granite-gneiss terrain: The tectonic evolution of an Archaean craton." In The Geology of the Belingwe Greenstone Belt, Zimbabwe. CRC Press, 2020. http://dx.doi.org/10.1201/9781003077596-3.

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