Relevant bibliographies by topics / Éléments traces Magmatisme

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Academic literature on the topic 'Éléments traces Magmatisme'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Éléments traces Magmatisme"

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Fang, Wei, Li-Qun Dai, Yong-Fei Zheng, Zi-Fu Zhao, and Li-Tao Ma. "Tectonic transition from oceanic subduction to continental collision: New geochemical evidence from Early-Middle Triassic mafic igneous rocks in southern Liaodong Peninsula, east-central China." GSA Bulletin 132, no. 7-8 (2019): 1469–88. http://dx.doi.org/10.1130/b35278.1.

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Abstract In contrast to the widespread occurrence of mafic arc magmatism during oceanic subduction, there is a general lack of such magmatism during continental subduction. This paradigm is challenged by the discovery of Early-Middle Triassic mafic igneous rocks from the southeastern margin of the North China Block (NCB), which was subducted by the South China Block (SCB) during the Triassic. Zircon U-Pb dating for these mafic rocks yields 247 ± 2–244 ± 5 Ma for their emplacement, coeval with the initial collision between the two continental blocks. These Triassic mafic rocks generally exhibit
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2

Nicholson, Suzanne W., Klaus J. Schulz, Steven B. Shirey, and John C. Green. "Rift-wide correlation of 1.1 Ga Midcontinent rift system basalts: implications for multiple mantle sources during rift development." Canadian Journal of Earth Sciences 34, no. 4 (1997): 504–20. http://dx.doi.org/10.1139/e17-041.

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Magmatism that accompanied the 1.1 Ga Midcontinent rift system (MRS) is attributed to the upwelling and decompression melting of a mantle plume beneath North America. Five distinctive flood-basalt compositions are recognized in the rift-related basalt succession along the south shore of western Lake Superior, based on stratigraphically correlated major element, trace element, and Nd isotopic analyses. These distinctive compositions can be correlated with equivalent basalt types in comparable stratigraphic positions in other MRS localities around western Lake Superior. Four of these composition
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Dorais, Michael J., Matthew Harper, Susan Larson, Hendro Nugroho, Paul Richardson, and Nova Roosmawati. "A comparison of Eastern North America and Coastal New England magma suites: implications for subcontinental mantle evolution and the broad-terrane hypothesis." Canadian Journal of Earth Sciences 42, no. 9 (2005): 1571–87. http://dx.doi.org/10.1139/e05-056.

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New England and Maritime Canada host two major suites of Mesozoic diabase dykes. The oldest is the Coastal New England dykes that were emplaced between 225 and 230 Ma. These rocks are dominantly alkaline with trace element and isotopic compositions indicative of a high-238U/204Pb mantle (HIMU) source. The oldest of the ~200 Ma Mesozoic rift magmas is represented by the Talcott basalt of the Hartford basin and its feeder dykes. External to the basin is the compositionally equivalent Higganum dyke. The extension of the Higganum, the Onway dyke in New Hampshire, is identical in major and trace el
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Simonov, V. A., Yu V. Karyakin, and A. V. Kotlyarov. "Physical and chemical conditions of basaltic magmatism of archipelago Franz Josef Land." Геохимия 64, no. 7 (2019): 700–725. http://dx.doi.org/10.31857/s0016-7525647700-725.

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As a result of mineralogical and thermobarogeochemical researches of different-age basaltic complexes of Archipelago Franz Josef Land (FJL) regular changes in time of compositions of plagioclases, clinopyroxenes and melt inclusions are established. Chemical compositions of inclusions directly testify to prevalence in Early Jurassic of plateau basaltic melts similar (according to the content of the basic components, and also trace and rare-earth elements) to typical basalt tholeiitic magma of the Siberian platform. In Early Cretaceous melts already had the enriched subalkaline character. Calcul
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MEYER, ROMAIN, GRAEME R. NICOLL, JAN HERTOGEN, VALENTIN R. TROLL, ROBERT M. ELLAM, and C. HENRY EMELEUS. "Trace element and isotope constraints on crustal anatexis by upwelling mantle melts in the North Atlantic Igneous Province: an example from the Isle of Rum, NW Scotland." Geological Magazine 146, no. 3 (2009): 382–99. http://dx.doi.org/10.1017/s0016756809006244.

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AbstractSr and Nd isotope ratios, together with lithophile trace elements, have been measured in a representative set of igneous rocks and Lewisian gneisses from the Isle of Rum in order to unravel the petrogenesis of the felsic rocks that erupted in the early stages of Palaeogene magmatism in the North Atlantic Igneous Province (NAIP). The Rum rhyodacites appear to be the products of large amounts of melting of Lewisian amphibolite gneiss. The Sr and Nd isotopic composition of the magmas can be explained without invoking an additional granulitic crustal component. Concentrations of the trace
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Martin, Hervé, Jean-François Moyen, and Robert Rapp. "The sanukitoid series: magmatism at the Archaean–Proterozoic transition." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 100, no. 1-2 (2009): 15–33. http://dx.doi.org/10.1017/s1755691009016120.

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ABSTRACTA specific type of granitoid, referred to as sanukitoid (Shirey & Hanson 1984), was emplaced mainly across the Archaean–Proterozoic transition. The major and trace element composition of sanukitoids is intermediate between typical Archaean TTG and modern arc granitoids. However, among sanukitoids, two groups can be distinguished on the basis of the Ti content of the less differentiated rocks of the suite: high- and low-Ti sanukitoids. Melting experiments and petrogenetic modelling show that they may have formed by either (1) melting of mantle peridotite previously metasomatised by
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7

Förster, Michael W., Stephan Buhre, Bo Xu, Dejan Prelević, Regina Mertz-Kraus, and Stephen F. Foley. "Two-Stage Origin of K-Enrichment in Ultrapotassic Magmatism Simulated by Melting of Experimentally Metasomatized Mantle." Minerals 10, no. 1 (2019): 41. http://dx.doi.org/10.3390/min10010041.

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The generation of strongly potassic melts in the mantle requires the presence of phlogopite in the melting assemblage, while isotopic and trace element analyses of ultrapotassic rocks frequently indicate the involvement of subducted crustal lithologies in the source. However, phlogopite-free experiments that focus on melting of sedimentary rocks and subsequent hybridization with mantle rocks at pressures of 1–3 GPa have not successfully produced melts with K2O >5 wt%–6 wt%, while ultrapotassic igneous rocks reach up to 12 wt% K2O. Accordingly, a two-stage process that enriches K2O and incre
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8

FEELEY, T. C., M. A. COSCA, and C. R. LINDSAY. "Petrogenesis and Implications of Calc-Alkaline Cryptic Hybrid Magmas from Washburn Volcano, Absaroka Volcanic Province, USA." Journal of Petrology 43, no. 4 (2002): 663–703. http://dx.doi.org/10.1093/petrology/43.4.663.

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Abstract The petrogenesis of calc-alkaline magmatism in the Eocene Absaroka Volcanic Province (AVP) is investigated at Washburn volcano, a major eruptive center in the low-K western belt of the AVP. New 40Ar/39Ar age determinations indicate that magmatism at the volcano commenced as early as 55 Ma and continued until at least 52 Ma. Although mineral and whole-rock compositional data reflect near equilibrium crystallization of modal phenocrysts, petrogenetic modeling demonstrates that intermediate composition magmas are hybrids formed by mixing variably fractionated and contaminated mantle-deri
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Hernández-Uribe, David, Juan David Hernández-Montenegro, Kim A. Cone, and Richard M. Palin. "Oceanic slab-top melting during subduction: Implications for trace-element recycling and adakite petrogenesis." Geology 48, no. 3 (2019): 216–20. http://dx.doi.org/10.1130/g46835.1.

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Abstract Arc volcanism and trace-element recycling are controlled by the devolatilization of oceanic crust during subduction. The type of fluid—either aqueous fluids or hydrous melts—released during subduction is controlled by the thermal structure of the subduction zone. Recent thermomechanical models and results from experimental petrology argue that slab melting occurs in almost all subduction zones, although this is not completely supported by the rock record. Here we show via phase equilibrium modeling that melting of either fresh or hydrothermally altered basalt rarely occurs during subd
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Riley, Teal R., and Philip T. Leat. "Chapter 2.2b Palmer Land and Graham Land volcanic groups (Antarctic Peninsula): petrology." Geological Society, London, Memoirs 55, no. 1 (2021): 139–56. http://dx.doi.org/10.1144/m55-2018-51.

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AbstractLarge-volume rhyolitic volcanism along the proto-Pacific margin of Gondwana consists of three major episodes of magmatism or ‘flare-ups’. The initial episode (V1) overlaps with the Karoo–Ferrar large igneous provinces atc.183 Ma. A second (V2) episode was erupted in the interval 171–167 Ma, and a third episode (V3) was emplaced in the interval 157–153 Ma. The magmatic events of the V1 and V2 episodes of the Antarctic Peninsula are reviewed here describing major and trace elements, and isotopic (Sr, Nd, O) data from rhyolitic volcanic rocks and more minor basaltic magmatism. An isotopic
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Dissertations / Theses on the topic "Éléments traces Magmatisme"

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Briqueu, Louis. "Étude du magmatisme associé aux zones de subduction à l'aide de traceurs géochimiques multiples, éléments traces et rapports isotopiques 87Sr-86Sr-143 Nd-144 Nd /." Montpellier : Centre géologique et géophysique, 1985. http://catalogue.bnf.fr/ark:/12148/cb34863308v.

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Thièblemont, Denis. "Le Magmatisme paléozoïque en Vendée : apport de la géochimie des éléments traces et de la pétrologie du métamorphisme à la compréhension du développement orogénique varisque /." Orléans : Ed. du BRGM, 1988. http://catalogue.bnf.fr/ark:/12148/cb350007407.

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Benoit, Mathieu. "Caractérisation géochimique (traces, isotopes) d'un système de drainage magmatique fossile dans l'ophiolite d'Oman." Toulouse 3, 1997. http://www.theses.fr/1997TOU30074.

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Cocherie, Alain. "Interaction manteau-croûte : son rôle dans la genèse d'associations plutoniques calco-alcalines, contraintes géochimiques, éléments en traces et isotopes du strontium et de l'oxygène." Orléans : impr. B.R.G.M, 1985. http://catalogue.bnf.fr/ark:/12148/cb36106768c.

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Thièblemont, Denis. "Le Magmatisme paléozoïque en Vendée apport de la géochimie des éléments traces et de la pétrologie du métamorphisme à la compréhension du développement orogénique varisque /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37610228h.

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Thiéblemont, Denis. "Le magmatisme paleozoique en vendee : apport de la geochimie des elements traces et de la petrologie du metamorphisme a la comprehension du developpement orogenique varisque." Paris 6, 1987. http://www.theses.fr/1987PA066646.

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Etude petrologique et geochimique d'un ensemble de series paleovolcaniques dans le but de reconstituer les cheminements metamorphiques p-t suivis par les differentes formations, d'identifier geodynamiquement ces series a partir de la geochimie des elements en traces. Ces formations s'inscrivent dans un domaine considere comme la zone interne de l'orogene varisque: le domaine ligerien. Deux stades magmatiques sont mis en evidence dans l'evolution pre-orogenique d'age paleozoique inferieur et superieur. L'ensemble de ce magmatisme est attribue au fonctionnement d'une zone de subduction d'age pro
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Travers, Metrich Nicole. "Mécanismes d'évolution à l'origine des magmas potassiques d'Italie Centrale et Méridionale : exemples du Mt Somma-Vésuve, des champs phlégréens et de l'île de Ventotène." Paris 11, 1985. http://www.theses.fr/1985PA112350.

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Depuis un million d’années, les magmas potassiques sont émis sur la marge tyrrhénienne des Apennins centraux et méridionaux à la faveur de trois systèmes tectoniques principaux (NW-SE, NE-SW, E-W). Ce mémoire traite de l’évolution intracrustale des liquides magmatiques dans les cas du Mt Somma Vésuve, des Champs Phlégréens et de l’île de Ventotène, caractérisés par une large gamme de magmas potassiques à fortement potassiques et sous-saturés en silice. Pour ce faire, nous avons diversifié les méthodes d’investigation en nous appuyant sur une histoire volcanologique précise des appareils, en dé
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Luais, Béatrice. "Pétrologie et géochimie (éléments traces et rapports isotopiques du Sr) du magmatisme associé aux zônes de subduction exemple du bassin méditerranéen (Santorin, Arc Egéen, Stromboli, Arc Eolien)." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb375992610.

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Bouvier, Pierre. "Les gabbro-diorites du domaine de Boussac : pétrographie, minéralogie, géochimie : relations avec le magmatisme acide du domaine de la Marche-Guéret." Paris 11, 1985. http://www.theses.fr/1985PA112353.

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Le Nord-Ouest du Massif Central français est constitué de trois domaines : le Plateau d'Aigurande, le Domaine de Boussac et le domaine de la Marche-Guéret. Le plateau d'Aigurande est formé par l'empilement d'unités cristallophylliennes d'histoires tectoniques et métamorphiques différentes. Ces unités sont percées de leucogranites et de granites à biotite westphaliens. La mise en place est synchrone des derniers mouvements tangentiels. Le domaine de Boussac est caractérisé par un magmatisme gabbro-dioritique calco-alcalin à affinité potassique, qui se met en place dans des séries mignatitiques
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Laubier, Muriel. "L'apport des inclusions magmatiques primitives à l'origine des basaltes océaniques : exemples de la zone FAMOUS (ride médio-Atlantique Nord) et du point chaud de la Réunion." Clermont-Ferrand 2, 2006. http://tel.archives-ouvertes.fr/docs/00/15/56/57/PDF/PhD.pdf.

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L'axe principal de cette thèse est la caractérisation des inclusions magmatiques dans des olivines primitives dans deux contextes géodynamiques -les rides médio-océaniques et les points chauds océaniques- avec deux exemples régionaux : la zone FAMOUS ( ride médio-Atlantique Nord) et le point chaud de la Réunion. Les inclusions magmatiques piégées dans un basalte de la zone FAMOUS se caractérisent par une grande variabilité de leurs teneurs en éléments majeurs et traces. L'essentiel de cette diversité résulte du processus de fusion polybare d'une source homogène. L'étude des inclusions magmatiq
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Books on the topic "Éléments traces Magmatisme"

1

Thièblemont, Denis. Le magmatisme paléozoïque en Vendée: Apport de la géochimie des éléments traces et de la pétrologie du métamorphisme à la compréhension du développement orogénique varisque. Editions du BRGM, 1988.

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