Gotowe bibliografie tematyczne / Mid-oceanic ridge basalts

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Gotowa bibliografia na temat „Mid-oceanic ridge basalts”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Mid-oceanic ridge basalts"

Fryer, Brian J., and John D. Greenough. "Evidence for mantle heterogeneity from platinum-group-element abundances in Indian Ocean basalts." Canadian Journal of Earth Sciences 29, no. 11 (1992): 2329–40. http://dx.doi.org/10.1139/e92-181.

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Oceanic-island tholeiitic basalts recovered from four sunken oceanic islands along the Reunion hot-spot trace show trace-element and mineralogical characteristics ranging from typical oceanic-island tholeiites to incompatible-element-depleted tholeiites resembling mid-ocean-ridge basalts. There are also variable degrees of magma evolution at each island. Noble metal (Au, Pd, Pt, Rh, Ru, Ir) abundances tend to decrease with magma evolution and with magma "alkalinity", indicating that the metals behave as compatible elements during crystal fractionation processes and during mantle melting proces

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Nagender Nath, B., and S. D. Iyer. "Basalt Microlapilli in Deep Sea Sediments of Indian Ocean in the Vicinity of Vityaz Fracture Zone." Journal Geological Society of India 34, no. 3 (1989): 303–9. http://dx.doi.org/10.17491/jgsi/1989/340310.

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Abstract Two cores recovered from the flanks of Mid-India oceanic ridge in the vicinity of Vityaz fracture zone consist of discrete pyroclastic layers at various depths. These layers are composed of coarse-grained, angular basaltic microlapilli in which labradorite is the major mineral set in a glassy mesostasis. Chemically the microlapilli are similar to Mid-Indian oceanic ridge basalts. The microlapilli are suggested to have been formed by the process of granulation, transportation and deposition, during Late Quaternary when lava of low viscosity erupted from small vents on a segment of Vity

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Haidar, Tanveer, Sagar Misra, Neeraj Vishwakarma, and K. R. Hari. "Geochemical evolution of basaltic flows from Dongargarh Supergroup, Bastar Craton, Central India." IOP Conference Series: Earth and Environmental Science 1032, no. 1 (2022): 012001. http://dx.doi.org/10.1088/1755-1315/1032/1/012001.

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Abstract Composition of basalts in magmatic arcs influenced by the subducting lithosphere, mantle wedge, dehydration of oceanic crust, and/or crustal assimilation beneath the arc. In this paper, we compiled earlier published geochemical data of Dongargarh basalts to decipher the genesis of volcanic rocks. SiO2 vs (FeO + MgO) plot of basalt suggests the volcanic rocks are tholeiitic in composition. Primitive mantle and REE normalized plots indicate either the source was enriched mantle or a possible interaction of depleted magmatic source with the Paleoarchean continental crust in the Bastar Cr

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Sun, Kai, Tao Wu, Xuesong Liu, Xue-Gang Chen, and Chun-Feng Li. "Lithogeochemistry of the Mid-Ocean Ridge Basalts near the Fossil Ridge of the Southwest Sub-Basin, South China Sea." Minerals 10, no. 5 (2020): 465. http://dx.doi.org/10.3390/min10050465.

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Mid-ocean ridge basalts (MORB) in the South China Sea (SCS) record deep crust-mantle processes during seafloor spreading. We conducted a petrological and geochemical study on the MORBs obtained from the southwest sub-basin of the SCS at site U1433 and U1434 of the International Ocean Discovery Program (IODP) Expedition 349. Results show that MORBs at IODP site U1433 and U1434 are unaffected by seawater alteration, and all U1433 and the bulk of U1434 rocks belong to the sub-alkaline low-potassium tholeiitic basalt series. Samples collected from site U1433 and U1434 are enriched mid-ocean ridge

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Daspan, R.I, J.A Yakubu, and U.A. Lar. "GEOCHEMICAL CHARACTERISTICS OF GABBROIC INTRUSIVE BODIES IN THE SHA-KALERI YOUNGER GRANITE COMPLEX, CENTRAL NIGERIA." Continental J. Earth Sciences 2 (November 7, 2007): 7–13. https://doi.org/10.5281/zenodo.824281.

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Large discrete gabbroic intrusive bodies outcrop within the Tof sub-unit of the Sha-Kaleri Jurassic Younger Granite Complex, situated at the southwestern end of the Jos Plateau.They were sampled and analysed for their major and trace element compositions with a view to determining their geochemical characteristics and tectonic setting The gabbroic rocks co-exist with hybrid rocks of composition in-between the gabbros and the granite porphyry and the extrusive equivalent basaltic rocks. The rocks are composed essentially of plagioclase and hornblende with minor pyroxene (titaniferous augite) an

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Yang, Shuying, Munir Humayun, and Vincent J. M. Salters. "Elemental constraints on the amount of recycled crust in the generation of mid-oceanic ridge basalts (MORBs)." Science Advances 6, no. 26 (2020): eaba2923. http://dx.doi.org/10.1126/sciadv.aba2923.

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Mid-oceanic ridge basalts (MORBs) are depleted in incompatible elements, but ridge segments far from mantle plumes frequently erupt chemically enriched MORBs (E-MORBs). Two major explanations of E-MORBs are that these basalts are generated by the melting of entrained recycled crust (pyroxenite) beneath ridges or by the melting of refertilized peridotites. These two hypotheses can be discriminated with compatible element abundances from Sc to Ge, here termed the ScGe elements. Here, we demonstrate that E-MORBs have systematically lower Ge/Si and Sc contents and slightly higher Fe/Mn and Nb/Ta r

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Lei, Ming, Zhengfu Guo, Wenbin Zhao, Maoliang Zhang, and Lin Ma. "Coexisting Late Cenozoic Potassic and Sodic Basalts in NE China: Role of Recycled Oceanic Components in Intraplate Magmatism and Mantle Heterogeneity." Lithosphere 2020, no. 1 (2020): 1–28. http://dx.doi.org/10.2113/2020/8875012.

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Abstract This study presents an integrated geochemical study of the Wudalianchi-Erkeshan potassic basalts and Halaha sodic basalts of NE China, and uses these data to further our understanding of the petrogenetic relationships between the coeval potassic and sodic basalts in this region. The potassic basalts with high concentrations of K2O have arc-like trace-element compositions and enriched Sr-Nd-Hf isotopic compositions with unradiogenic 206Pb/204Pb values (16.77–16.90). In contrast, the sodic basalts with high concentrations of Na2O have OIB-like trace-element compositions and depleted Sr-

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Dostal, J., G. D. Jackson, and A. Galley. "Geochemistry of Neohelikian Nauyat plateau basalts, Borden rift basin, northwestern Baffin Island, Canada." Canadian Journal of Earth Sciences 26, no. 11 (1989): 2214–23. http://dx.doi.org/10.1139/e89-188.

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Subaerial basalt flows of the Neohelikian Nauyat Formation from northwestern Baffin Island, Northwest Territories, constitute an approximately 360 m thick unit that overlies an Archean–Aphebian metamorphic basement. The lavas have undergone a low-grade regional metamorphism that affected the abundances of Na, K, and related trace elements. The basalts are continental tholeiites possessing some characteristics of mid-ocean-ridge basalts. They underwent fractional crystallization of clinopyroxene, plagioclase, and olivine. Mantle-normalized patterns show an enrichment of the lithophile elements,

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Barbero, Edoardo, Morteza Delavari, Ashgar Dolati, et al. "Early Cretaceous Plume–Ridge Interaction Recorded in the Band-e-Zeyarat Ophiolite (North Makran, Iran): New Constraints from Petrological, Mineral Chemistry, and Geochronological Data." Minerals 10, no. 12 (2020): 1100. http://dx.doi.org/10.3390/min10121100.

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The North Makran domain (southeast Iran) is part of the Makran accretionary wedge and consists of an imbricate stack of continental and Neo-Tethyan oceanic tectonic units. Among these, the Band-e-Zeyarat ophiolite consists of (from bottom to top): ultramafic cumulates, layered gabbros, isotropic gabbros, a sheeted dyke complex, and a volcanic sequence. Sheeted dykes and volcanic rocks are mainly represented by basalts and minor andesites and rhyolites showing either normal-type (N) or enriched-type (E) mid-ocean ridge basalt affinities (MORB). These conclusions are also supported by mineral ch

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Garcia, Michael O., and Eric Hellebrand. "Celestine discovered in Hawaiian basalts." American Mineralogist 105, no. 1 (2020): 52–57. http://dx.doi.org/10.2138/am-2020-6995.

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Abstract We report here the first occurrence of celestine (SrSO4) in recent oceanic basalts. Celestine was found in moderately altered accidental volcanic blocks from Ka‘ula Island, a rejuvenated tuff cone in the northern Hawaiian Islands. This occurrence is novel not only for the presence of celestine but also for the absence of barite, the sulfate mineral most commonly found in oceanic hydrothermal deposits. Celestine was found lining vesicles and partially fillings voids within the matrix of several high Sr (2200–6400 ppm) Ka‘ula basalts. High-quality wavelength-dispersive microprobe analys

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Rozprawy doktorskie na temat "Mid-oceanic ridge basalts"

Violay, Marie. "Réservoirs hydro-géothermaux haute enthalpie : apport des propriétés pétrophysiques des basaltes." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2010. http://tel.archives-ouvertes.fr/tel-00591798.

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La géothermie est considérée comme une source d'énergie propre et inépuisable à échelle humaine. Actuellement, le rendement des centrales géothermiques est limité à l'exploitation de fluides de températures inférieures à 350 °C. L'association de l'activité tectonique et volcanique aux dorsales océaniques fait de l'Islande un lieu où l'extraction de fluides supercritiques (T> 375 °C) peut être envisagée. Cette exploitation pourrait multiplier par dix la puissance électrique délivrée par le système géothermal. Ces fluides peuvent-ils circuler dans la croûte océanique ? Ce travail propose de cont

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Desmet, Alain. "Ophiolites et séries basaltiques crétacées des régions caraïbes et nordandines : bassins marginaux, dorsales ou plateaux océaniques ?" Nancy 1, 1994. http://www.theses.fr/1994NAN10313.

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Les régions caraïbes et nordandines comportent, au crétacé, des séries magmatiques basiques, volcaniques ou ophiolitiques. L'étude petrologique analytique (majeurs, traces, terres rares, microsonde) de quelques séries du Costa Rica, de Colombie et d'Équateur, a permis leur identification magmatique et dynamique. La comparaison des laves à certaines séries volcaniques océaniques actuelles a conduit à une réinterprétation magmatique et géodynamique globale. Au Costa Rica, la péninsule de Santa Elena est formée d'une large nappe ophiolitique tholeiitique avec péridotites, cumulats gabbroiques et

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Colin, Aurélia. "Contraintes sur les processus de dégazage des dorsales océaniques par la géochimie des volatils et la pétrologie des laves basaltiques." Thesis, Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL083N/document.

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Afin de préciser l'origine des volatils terrestres et les flux actuels et passés vers l’atmosphère, de nombreuses études s’intéressent à la composition du manteau. Ce réservoir est échantillonné naturellement lors des éruptions volcaniques, mais une grande partie des gaz est alors émise dans l'atmosphère, de sorte que la composition des volatils du manteau reste peu contrainte. Nous cherchons à préciser les mécanismes de dégazage sous les dorsales océaniques afin de corriger ces fractionnements. L'analyse (He-Ne-Ar-CO2) de verres basaltiques issus de la dorsale des Galápagos, dans la zone d'in

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Części książek na temat "Mid-oceanic ridge basalts"

Elthon, Don. "Experimental phase petrology of mid-ocean ridge basalts." In Oceanic Basalts. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3540-9_6.

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Elthon, Don. "Experimental phase petrology of mid-ocean ridge basalts." In Oceanic Basalts. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3042-4_6.

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Sen, Gautam. "Basaltic Magmatism at Mid-Oceanic Ridges and Hawaiian Hot Spot." In Petrology. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38800-2_8.

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Farnetani, Cinzia G. "Plumes from the heterogeneous Earth’s mantle." In Chemical Geodynamics of the Earth’s Mantle: New Paradigms. Mineralogical Society of the United Kingdom and Ireland, 2024. http://dx.doi.org/10.1180/emu-notes.21.2.

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The spectrum of geochemical compositions of Oceanic Island Basalts (OIBs) and their systematic differences from Mid-Ocean Ridge Basalts (MORBs) reveal that the Earth’s mantle is chemically and isotopically heterogeneous. Two main processes, both related to plate tectonics, contribute to the creation of mantle heterogeneities: (1) partial melting generates melts enriched in incompatible elements and leaves a depleted residual rock; and (2) subduction of the oceanic lithosphere injects heterogeneous material at depth, in particular, altered oceanic crust and continental/oceanic sediments. Moreov

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Hallam, Anthony. "Late Mesozoic." In An Outline of Phanerozoic Biogeography. Oxford University PressOxford, 1994. http://dx.doi.org/10.1093/oso/9780198540618.003.0008.

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Abstract The Cretaceous Period was a time of considerable geological activity associated primarily with the disintegration of Pangaea and a considerable increase in volcanism, which had significant biogeographic consequences. As in previous chapters attention will be directed initially to the framework of major geological events before considering organic distributions. The most up-to-date plate tectonic reconstructions for the Cretaceous are those of Scotese et al. (1988), which have utilized an interactive computer graphics method. The three dimensional capabilities of this method allow the

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Fedkin, Valentin V., Theodore D. Burlick, Mary L. Leech, Andrey A. Shchipansky, Peter M. Valizer, and W. G. Ernst. "Petrotectonic origin of mafic eclogites from the Maksyutov subduction complex, south Ural Mountains, Russia." In Plate Tectonics, Ophiolites, and Societal Significance of Geology: A Celebration of the Career of Eldridge Moores. Geological Society of America, 2021. http://dx.doi.org/10.1130/2021.2552(09).

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ABSTRACT The Maksyutov complex is a mid- to late-Paleozoic high- to ultrahigh-pressure (HP-UHP) eclogite-bearing subduction zone terrane in the south Ural Mountains. Previous reports of radial fractures emanating from quartz inclusions in garnet, omphacite, and glaucophane, cuboid graphite pseudomorphs after matrix diamond, and microdiamond aggregates preserved in garnet identified by Raman spectroscopy indicate that parts of the complex were subjected to physical conditions of ∼600 °C and &gt;2.8 GPa for coesite-bearing rocks, and &gt;3.2 GPa for diamond-bearing rocks. Peak UHP eclogi

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Das, Souvik, and Asish R. Basu. "Origin of the Indus ophiolite linked to the mantle transition zone (410–660 km)." In Plate Tectonics, Ophiolites, and Societal Significance of Geology: A Celebration of the Career of Eldridge Moores. Geological Society of America, 2021. http://dx.doi.org/10.1130/2021.2552(02).

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ABSTRACT The southeast Ladakh (India) area displays one of the best-preserved ophiolite sections in this planet, in places up to 10 km thick, along the southern bank of the Indus River. Recently, in situ, ultrahigh-pressure (UHP) mineralogical evidence from the mantle transition zone (MTZ; ∼410–660 km) with diamond and reduced fluids were discovered from two peridotite bodies in the basal mantle part of this Indus ophiolite. Ultrahigh-pressure phases were also found by early workers from podiform chromitites of another coeval Neo-Tethyan ophiolite in southern Tibet. However, the MTZ phases in

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Alexander, Earl B., Roger G. Coleman, Todd Keeler-Wolfe, and Susan P. Harrison. "Nature of Ultramafics." In Serpentine Geoecology of Western North America. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780195165081.003.0005.

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The earth is divided into three layers: the crust, the mantle, and the core. There are two principle regions within the crust: continents and ocean basins. The rocks that make up these layers differ from one another in chemical composition and density. The mantle is composed of dense ultramafic rocks, rich in magnesium-iron silicate minerals such as olivine and pyroxene. Ultramafic rock is the main source of serpentine soil in the continental crust. Most of the lighter crustal rocks are made up of silicate minerals that are enriched in the lighter elements sodium, calcium, and potassium, which

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Wakabayashi, John. "Upper-plate versus lower-plate ophiolitic assemblages and their significance in interpreting orogenic belt evolution and processes." In The Virtue of Fieldwork in Volcanology, Sedimentology, Structural Geology, and Tectonics—Celebrating the Career of Cathy Busby. Geological Society of America, 2025. https://doi.org/10.1130/2025.2563(18).

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ABSTRACT Ophiolitic rocks occupy different positions relative to paleosubduction zones and have a variety of origins. Distinguishing the structural-tectonic positions of such ophiolitic assemblages is important for relating the ophiolitic rocks to tectonic processes and orogenic history. The California Coast Ranges facilitate recognition of the original structural-tectonic setting of the ophiolitic rocks in the area because the subduction episode associated with them terminated by conversion to a transform plate margin, rather than continental collision, and exhumation since subduction termina

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Centeno-García, Elena, Joaquín Ruiz, and Alexander Iriondo. "Stratigraphic, geochemical, and isotopic constraints on tectonic and magmatic stages of the Zihuatanejo (Guerrero composite) terrane in Arteaga-Tumbiscatío, Michoacán, Mexico." In The Virtue of Fieldwork in Volcanology, Sedimentology, Structural Geology, and Tectonics—Celebrating the Career of Cathy Busby. Geological Society of America, 2025. https://doi.org/10.1130/2025.2563(15).

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ABSTRACT The Arteaga-Tumbiscatío region of the Zihuatanejo terrane forms the westernmost part of the Guerrero composite terrane. This region contains one of the most complete stratigraphic columns of the terrane. Its evolution is divided into nine main tectonic stages characterized by alternating deformational and volcanic-arc events. The oldest rocks in the region belong to the Arteaga Complex, which is made up of highly sheared and locally metamorphosed turbidites (shale, quartzose sandstone, and black chert) and volcanic siltstone that forms a sedimentary matrix with blocks of mid-ocean-rid

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Streszczenia konferencji na temat "Mid-oceanic ridge basalts"

Devos, Gabriel, Frédéric Moynier, John Creech, et al. "Cadmium isotope composition of the Earth’s mantle derived from mid-oceanic ridge basalts and komatiites." In Goldschmidt2023. European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.18269.

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