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74 results for “magmatism”
Prolonged multi-phase magmatism due to plume-lithosphere interaction as applied to the High Arctic Large Igneous Province
<p>This data set contains parameter files to run the ASPECT models shown in the associated publication in G³, as well as required postprocessing files. A README file in the main folder contains more information on how to use this data set.</p>
Data from: Simultaneous determination of crystallization age and "uncommon" initial lead composition in a series of Phanerozoic magmatic allanites
<h2><span>Submitted Article</span></h2> <h2><span>Simultaneous determination of crystallization age </span><span><em>and</em></span><span> “uncommon” initial lead composition in a series of Phanerozoic magmatic allanites</span></h2> <p><span><span>Etienne SKRZYPEK</span></span><span><sup><span>a*</span></sup></span><span><span>, Daniela GALLHOFER</span></span><span><sup><span>a</span></sup></span><span><span>, Christoph HAUZENBERGER</span></span><span><sup><span>a</span></sup></span><span><span>, Isabella HAAS</span></span><span><sup><span>a</span></sup></span><span><span>, Anh Thi Quynh NONG</span></span><span><sup><span>a</span></sup></span><span><span>, Harald FRITZ</span></span><span><sup><span>a</span></sup></span><span><span>, Milan KOHÚT</span></span><span><sup><span>b</span></sup></span><span><span>, Viljem PODGORŠEK</span></span><span><sup><span>c</span></sup></span><span><span>, Zmago ŽORŽ</span></span><span><sup><span>d</span></sup></span></p>
Appendix B for "The ~100 Ma Emperor-Hawaiian chain magmatism: isothermal melting of the oceanic 'plummeting plume' mantle"
<p>This dataset contains nine supplementary tables for the article "The ~100 Ma Emperor-Hawaiian chain magmatism: isothermal melting of the oceanic ‘plummeting plume’ mantle" submitter to Geochimica et Cosmochimica Acta</p>
Machine learning on intraplate magmatism in NE China: Data and Code
<p>This version has a few errors. For the correct version, please see https://zenodo.org/records/12806006.</p>
The origin of late Cenozoic magmatism in the South China Sea and Southeast Asia
<p>Table S1 Chemical and isotopic compositions for South China Sea seamount lava and standard sample</p> <p>Table S2 Major and trace element contents and He isotope compositions for South China Sea seamount glass</p> <p>Table S3 Major element compositions of melt inclusion in olivine from South China Sea seamount lavas</p> <p>Table S4 Major and trace element compositions of olivines analyzed by EPMA (wt. %) and LA-ICP-MS (ppm)</p> <p>Table S5 Chemical compositions of spinel inclusions and their host olivines analyzed and calculated Al-in-ol-sp temperatures and log(fO2) FMQ.</p> <p>Table S6 U-Th-Pb isotopic ratios and ages of zircons</p> <p>Table S7 Compositions of International standards</p>
The origin of late Cenozoic magmatism in the South China Sea and Southeast Asia
<p><strong>Table S1. Chemical and isotopic compositions for lavas from the South China Sea seamounts</strong></p> <p><strong>Table S2. Major and trace element contents and He isotope compositions for South China Sea seamount glass</strong></p> <p><strong>Table S3 Major element compositions of melt inclusion in olivine from lavas in the South China Sea seamounts</strong></p> <p><strong>Table S4. Major and trace element compositions of olivines analyzed by EPMA (wt. %) and LA-ICP-MS (ppm)</strong></p> <p><strong>Table S5 Chemical compositions of spinel inclusions and their host olivines analyzed and calculated Al-in-ol-sp temperatures and log(fO2) FMQ</strong></p> <p><strong>Table S6: U-Th-Pb isotopic ratios and ages, Hf isotopes of zircons</strong></p> <p><strong>Table S7 Compositions of International standards</strong></p>
Supporting-Information - Text of Tectonic burial of sedimentary rocks drives the building of juvenile crust of magmatic arc
<p>Text S1 describes the analytical methods used in this study. Figure S1 is the X-ray mappings of garnets from the pelitic migmatites. Table S1 is the chemical compositions of garnet from the studied pelitic migmatites. Table S2 is representative chemical compositions of other minerals from the pelitic migmatites. Table S3 shows the whole rock Sr–Nd isotopes and major element compositions of the studied pelitic migmatite, the Late Cretaceous arc magmatic rocks and Neo-Tethyan ophiolites. Table S4 is zircon U–Pb dating and trace element data. Table S5 shows the zircon Lu–Hf and oxygen isotopic data.</p>
Lithium Isotope Fractionation during Intensive Felsic Magmatic Differentiation
<p>All the isotope and element data of the manuscript "Lithium isotope fractionation during intensive felsic magmatic differentiation". </p> <p>Table 1 Major elemental compositions (in wt.%) for granites from the Xihuashan and Yaogangxian plutons</p> <p><strong>Table 2</strong> Li isotopic and selected trace elemental compositions for granites from the Xihuashan and Yaogangxian plutons</p> <p><strong>Table 3</strong> Li concentration and Li isotopic composition of minerals separated from granites and greisen of Xihuashan pluton.</p> <p>Table S1. The analyzed International reference materials</p> <p>Table S2. Chemical compositions of mica from granites in the Xihuashan pluton</p> <p>Table S3. Major and trace element compositions of K-feldspar from granites in the Xihuashan pluton.</p> <p>Table S4. Trace element compositions of zircon from granites in the Xihuashan pluton</p> <p>Table S5. Parameters used for the Rayleigh crystal fractionation modeling</p>
Molybdenum isotope heterogeneity of metal sulfides from magmatic hydrothermal systems
<p>Exploration of the application of Mo isotope in the field of mineralogy with precise knowledge of the geochemical behaviors of Mo in the PCDs is of considerable concerns. This study puts critical constraints on the Mo isotope geochemistry in magmatic-hydrothermal systems based on analysis of Mo isotope of the metal sulfides from different mineralization stages (i.e., epidote-chlorite, chlorite-illite, and quartz-illite stages) in Pulang porphyry Cu deposit, Yunnan, Southwest China. We observed that pyrites, chalcopyrites and pyrrhotites with highly variableMo abundances and heavier δ<sup>98</sup>Mo (-0.34 ± 0.04‰ to 3.01 ± 0.03‰) in comparison to molybdenites (δ<sup>98</sup>Mo: -0.90 ± 0.04‰ to 0.08 ± 0.04‰), whole-rock ore-forming porphyries (δ<sup>98</sup>Mo: -0.18 ± 0.03‰ to -0.08 ± 0.03‰) and surrounding rocks (-0.41± 0.05‰ to -0.14± 0.03‰).The variability of δ<sup>98</sup>Mo signatures of these metal sulfides is independent of lithology of originally magma sources, which instead constrained by the evolutions of ore-forming fluids, changes of ore-forming temperature or metallogenic settings, as well as differential geochemical behaviors of Mo species.</p> <p>In the magmatic hydrothermal metallogenic system, there is a progressive partitioning of Mo into exsolved metallic minerals, with molybdenites preferentially partitioning lighter δ<sup>98</sup>Mo while pyrites, chalcopyrites and pyrrhotites are enriched in heavier δ<sup>98</sup>Mo. Additionally, these metallic sulfides have a preference for relatively heavier δ<sup>98</sup>Mo enrichment in the early metallogenic stage, thereby leaving residual metallogenic fluids with progressively homogenized lighter δ<sup>98</sup>Mo, and consequently relatively homogeneous but lighter isotopes of the metallic minerals in the later stages. The extensively maintained Mo isotope fractionation in PCDs is indicative of a maldistribution of ore-forming components in the sulfides, of which it is this disequilibrium effect that points to the enrichment of metal elements as well as the significant process of magmatic hydrothermal metallogenesis. Mo isotope systematics provide a robust geochemical proxy to interrogate PCDs genetic mechanisms and metal precipitation stages, allowing to consider it as a subservience indicator for the complex metal enrichment that can be extrapolated to other porphyry-type deposits.</p>
Magmatic fingerprints of subduction initiation and mature subduction: Numerical modelling and observations from the Izu-Bonin-Mariana system (Supplementary Material)
<p>Video of the reference model as well as three end-member models described in the manuscript. Additionally, the source code that was used to run the models and the initial model setup for each model presented can be found. The numbering of the models is equivalent to the numbering used in the paper (Ritter et al., 2024 in Front. Earth Sci.)</p>
Investigating the velocity of magmatic intrusions and its relation with rock fracture toughness: insights from laboratory experiments and numerical models
<p>This repository provides compressed folders containing the velocity profiles recorded during our oil-filled crack propagation experiments and the code used to simulate those experiments. In particular, the files in compressed folders <strong>10ml</strong>, <strong>30ml</strong>, <strong>50ml</strong> and <strong>others_ml</strong> contain two columns corresponding to the tracked cracks' depth [m] and velocity [m/s]. The two folders <strong>DYKE-CODE_constant-Ef</strong> and <strong>DYKE-CODE_variable-Ef</strong> contain the Fortran90 code, the input and output files, and all the scripts needed to reproduce the simulations and the plots displayed in Figure 3 and Figure 4 of the article <em>"</em>Investigating the velocity of magmatic intrusions and its relation with rock fracture toughness: insights from laboratory experiments and numerical models<em>"</em><strong><em> </em></strong> by A. Gaete, F. Maccaferri, S. Furst, and V. Pinel.</p>
A preliminary framework for magmatism in modern continental back-arc basins and its application to the Triassic-Jurassic tectonic evolution of the Caucasus
Open the record for dataset details and reuse information.
Geophysical and geochemical evidence for a new mafic magmatic province within the Northwest Shelf of Australia: Supplementary material
Open the record for dataset details and reuse information.
Magmatic activity and plate motion during the latent stage of Midcontinent Rift development
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Confirmation of progressive plate motion during the Midcontinent Rift’s early magmatic stage from the Osler Volcanic Group, Ontario, Canada
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Late Paleo-to early Mesoproterozoic mafic magmatism in the SW Yangtze Block: Mantle plumes associated with Nuna breakup?
<p>Numerous late Paleoproterozoic to early Mesoproterozoic mafic magmatic rocks are exposed in the southwestern Yangtze Block of South China, corresponding to the early breakup of the Nuna supercontinent. The geochronological data reveal three episodes of mafic magmatism at ~1740 Ma, 1700 Ma and 1500 Ma. The two older generations have MORB-like Nb/Ta ratios and superchondritic Nd-Hf isotopes, indicating that they were likely derived from partial melting of asthenospheric mantle. In contrast, the ~1500 Ma mafic rocks possess OIB-like Nb/Ta (16.7-19.1) and Zr/Hf (41.0-45.1) ratios, ε<sub>Nd</sub> (t) values (-0.8 to +0.1) and ε<sub>Hf</sub> (t) values (-3.3 to +8.4), suggesting that they originated from a mantle plume. These three pulses of mafic magmatic activity in the Yangtze Block have geochemical features (such as TiO<sub>2 </sub>contents, Nb/Y and La/Yb values), similar to coeval mafic rocks in Siberia and Laurentia, consistent with detrital zircon provenance studies which show a spatial linkage of the Yangtze Block with northern Laurentia and southern Siberia in the Nuna configuration. Taking all synchronous mafic magmatism into account, a mantle plume beneath southern Siberia initiated at ~1750 Ma forming a broad region of mafic magmatism that extended into the Yangtze Block and resulted in lithospheric extension. The Yangtze Block was possibly the nearest neighbor to western part of the Siberian Craton at ~1500 Ma. It subsequently drifted from the Nuna supercontinent induced by the ~1500 Ma Kuonamka mantle plume, heralding a period of limited magmatic activity and tectonic quiescence that extended throughout the remainder of the Mesoproterozoic.</p>
Supporting data to "Tidally-induced magmatic pulses on the oceanic floor of Jupiter's moon Europa"
<p>Data used for producing figures in manuscript "Tidally-induced magmatic pulses on the oceanic floor of Jupiter's moon Europa"</p>
Data accompanying the paper: Can a combination of convective and magmatic heat transport in the mantle explain Io's volcanic pattern?
<p>Data accompanying the publication Steinke et al. 2020 - "Can a combination of convective and magmatic heat transport in the mantle explain Io's volcanic pattern?", JGR Planets. For more information see the README. Please contact Teresa Steinke with any questions.</p> <p>PART A</p> <p>Two sets including Io's volcanic features locations adopted from previous publications, fitted and filtered in order to be suitable for the comparision with Io's interior dynamics.</p> <p>PART B</p> <p>Solution spaces in three-dimensional parameter space spanned by the viscosity, the thickness and the heat flux fraction of Io's upper convective layer (Figure 3, 4, 5, and A1)</p> <p> </p>
Slab dehydration in Sumatra: Implications for fast and slow earthquakes and arc magmatism
<p>The catastrophic 2004 Sumatra-Andaman Mw9.1 earthquake associated with destructive tsunamis has characterized Sumatra as one of the most dangerous convergence zones. Nevertheless, the effects of the thermohydrous state on the strongly coupled megathrust of the incoming plate remain enigmatic. By using a 3-D thermomechanical model to compute the temperature variation and the complicated phase transition process of the water-bearing descending plate which generates unstable thrust slips, we find that Sumatran earthquakes at varying depths are likely under the control of the inter- or intraplate hydrothermal regime, which occurs in or close to the petrological metamorphism transition area. The slab dehydration of the water-rich mid-ocean-ridge basalts (MORB) and the ultramafic rocks in the oceanic lithosphere releases a large amount of fluid to the continental wedge and further facilitates arc magmatism. The fluids are prone to upwelling following the subduction channel along the plate interface and thus contribute to the clustering of earthquakes updip of the dehydration front beneath offshore Sumatra. Brittle failure and dehydration embrittlement at depth, along with the temperature differences caused by variant slab geometry, are conjectured to greatly influence the occurrence of fast and slow earthquakes in Sumatra.</p>
Replication Data for: Intrusive magmatism strongly contributed to the volatile release into the atmosphere of early Earth
<p>The purpose of this data set is to reproduce the figures in Vulpius and Noack (2022) as well as to access the corresponding data. This data set can be compiled with MATLAB or GNU Octave.</p>
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