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23 results for “ophiolite”
Major element and volatile compositons of volcanic glasses and related datasets for paleobathymetry of the Samail & Troodos ophiolites
<p>This archived dataset accompanies the article "<em>Paleobathymetry of submarine lavas in the Samail and Troodos ophiolites: insights from volatiles in glasses and implications for hydrothermal systems</em>" in the Journal of Geophysical Research: Solid Earth (Belgrano et al. 2021). Comprehensive details on the aquisition and selection of this data are given in the accompanying article.</p> <p>This dataset archive consists of a multi-sheet Excel file containing: (1) Newly measured major element and H<sub>2</sub>O (± CO<sub>2</sub>) compositions for volcanic glasses recovered from the Samail ophiolite, respectively determined by electron microprobe analysis (EMPA) and Fourier Transform infrared spectroscopy (FTIR). (2) The raw Beer-Lambert equation parameters as used to determine these H<sub>2</sub>O (± CO<sub>2</sub>) compositions. (3) The H<sub>2</sub>O (± CO<sub>2</sub>) compositions of volcanic glasses from the Troodos ophiolite reproduced from Woelki et al. (2020) together with newly calculated volatile saturation pressures and their depth equivalents. (4) A compilation of previously published volcanic glass data used to calibrate and test the paleobathymetric approach at the centre of the related publication. (5) A reference list for previously published data.</p>
A 5000 km2 ASTER alteration map of the Oman–UAE ophiolite crust: Data archive and remote sensing toolkit
<p>This archive contains data and maps accompanying the journal article <em>"Multispectral discrimination of spectrally similar hydrothermal minerals in mafic crust: A 5000 km<sup>2</sup> ASTER alteration map of the Oman–UAE ophiolite</em>".</p> <p>The archive includes the full resolution, multi-format alteraton maps of hydrothermal alteration of the entire Oman–UAE ophiolite crust generated by ASTER remote sensing. Additional files necessary to reproduce or build on this work are also provided, constituting a remote sensing toolkit for the Oman–UAE ophiolite. A complete list of contents is provided within. Please contact TMB in case of compatibility issues.</p>
BC Ophiolitic UMR Mineralogy, Physical Properties, and ME Geochemistry
<p>This is dataset comprises: major-element geochemistry, physical properties (magnetic susceptibility, natural remanent magnetization, density, porosity), and mineralogy (XRD and TGA) for ophiolitic ultramafic rocks in British Columbia.</p>
Dataset for submitted manuscript "Temperatures and cooling rates recorded by the New Caledonia ophiolite: implications for cooling mechanisms in young forearc sequence"
<p>original dataset for the manuscript "Temperatures and cooling rates recorded by the New Caledonia ophiolite: implications for cooling mechanisms in young forearc sequences" submitted to the journal "G3 Geophysics, Geochemistry, Geosystems"</p>
Datasets for the paper: "Rock-matrix porosity and permeability of the hydrothermally altered, upper oceanic crust, Oman ophiolite"
<p>This dataset includes all the data used for the paper submitted to the Journal of Geophysical Research: Solid Earth, entitled: <strong>Rock-matrix porosity and permeability in the hydrothermally altered, upper oceanic crust, Oman ophiolite. </strong></p> <p>One excel file is provided with the following tables on separate sheets:</p> <p>Table 1: Sample locations, alteration types, and petrophysical analyses</p> <p>Table S1: Trace element Zirconium and Yttrium analysis for this study’s sample set in Figure S1</p> <p>Table S2: Outcrop upscale results from image analysis</p> <p>Table S3: Sample bulk rock geochemistry</p>
Insights into subduction-zone fluid-rock interactions and carbon recycling from magnesium isotopes of subducted ophiolitic mélanges in the Arabian-Nubian Shield
<p><span>Table S1:</span><span> Major element concentrations (in wt%) and Mg isotopic compositions (‰) for the ANS subducted ophiolitic mélanges.</span></p> <p><span>Table S2: Trace element concentrations (ppm) for the ANS subducted ophiolitic mélanges.</span></p>
Geochemical Results of Mafic Blocks in Southern Ophiolitic Mélange in Luqu (Xigaze) Ophiolite from Yarlung-Tsangpo Suture Zone, Southern Tibet
<p><strong>Table S1</strong> Basic information of mafic rocks of southern ophiolitic mélange from Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S2</strong> Major and trace element compositions of mafic rocks of southern ophiolitic mélange from Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S3</strong> Sr-Nd-Hf isotope results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S4</strong> Clinopyroxene EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S5</strong> Clinopyroxene Laser Ablation-ICPMS results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S6</strong> Amphibole EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S7</strong> Amphibole Laser Ablation-ICPMS results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S8</strong> Plagioclase EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S9</strong> Zircon SIMS U-Pb dating results of mafic rocks from southern Luqu mélange</p> <p><strong>Table S10 </strong>Zircon Hf-O isotopes of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S1</strong> Basic information of mafic rocks of southern ophiolitic mélange from Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S2</strong> Major and trace element compositions of mafic rocks of southern ophiolitic mélange from Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S3</strong> Sr-Nd-Hf isotope results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S4</strong> Clinopyroxene EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S5</strong> Clinopyroxene Laser Ablation-ICPMS results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S6</strong> Amphibole EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S7</strong> Amphibole Laser Ablation-ICPMS results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S8</strong> Plagioclase EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S9</strong> Zircon SIMS U-Pb dating results of mafic rocks from southern Luqu mélange</p> <p><strong>Table S10 </strong>Zircon Hf-O isotopes of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p>
Data set for the paper "Temperatures and cooling rates recorded by the New Caledonia ophiolite: implications for cooling mechanisms in young forearc sequences"
<p>Data set for the paper "Temperatures and cooling rates recorded by the New Caledonia ophiolite: implications for cooling mechanisms in young forearc sequences" by Secchiari et al.</p>
Paleomagnetic Reconstruction for the Origin of the Supra- Subduction Zone Ophiolites during the Progressive Closure of the Neotethys Ocean in Eastern Mediterranean
<p>The paleomagnetic data comprise stereonets from tilt corrected each site used for mean direction. The results contain rocks from the Hatay, Koçali, Göksun, İspendere, Kömürhan and Guleman ophiolites as well as from the overlying sedimentary units emplaced in SE Anatolian region. Specimens of each site were described with its declination/inclination and MAD angles.</p>
Ophiolites in the Central Asian Orogenic Belt record Cambrian subduction initiation processes
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Data set for the paper "Temperatures and cooling rates recorded by the New Caledonia ophiolite: implications for cooling mechanisms in young forearc sequences"
<p>Mineral data set for the paper "Temperatures and cooling rates recorded by the New Caledonia ophiolite: implications for cooling mechanisms in young forearc sequences"</p>
Data set for the paper "Temperatures and cooling rates recorded by the New Caledonia ophiolite: implications for cooling mechanisms in young forearc sequences"
<p>Mineral data set for the paper "Temperatures and cooling rates recorded by the New Caledonia ophiolite: implications for cooling mechanisms in young forearc sequences"</p>
Dataset for Formation of Metamorphic Soles underlying Ophiolites during Subduction Initiation: A Systematic Numerical Study
<p>The numerical model results in the paper 'Formation of Metamorphic Soles underlying Ophiolites during Subduction Initiation: A Systematic Numerical Study'.</p>
Role of mantle dynamics and geochemical diversity in chromitite formation New perspectives from the Luobusa ophiolite, SW Tibet
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Data set for the paper "Temperatures and cooling rates recorded by the New Caledonia ophiolite: implications for cooling mechanisms in young forearc sequences"
<p>Tables 1-3 and Tables S1-S4</p>
The composition of the lower oceanic crust in the Wadi Khafifah section of the southern Samail (Oman) ophiolite
<p>The composition of the intrusive gabbroic lower oceanic crust remains poorly characterized in comparison to the extrusive portion of the oceanic crust, especially for intermediate-fast spreading mid-ocean ridges. This is a consequence of limited exposures of extant lower oceanic crust and of ophiolites similar to mid-ocean ridge crust. One of the best analogues for mid-ocean ridge crust is the southern Samail ophiolite that formed during a period of rapid seafloor spreading above a nascent subduction zone. Here, we focus on the geochemical stratigraphy (whole rock and mineral major and trace element compositions) of the 5200 m-thick, lower crustal, Wadi Khafifah section of the Wadin Tayin massif in the southern Oman ophiolite. Gabbros from the lowermost 3700 m of this section (the 'lower gabbros') show no systematic changes in composition with height above the Mantle Transition Zone. In contrast, gabbros from the uppermost 1500 m (the 'upper gabbros') display marked increases in incompatible trace element concentration with increasing height. Liquids in equilibrium with the lower gabbros have major and trace element compositions that overlap with those measured in the upper gabbros and sheeted dikes. Upper gabbros preserve mineral cores with primitive major element compositions that overlap with the range of lower gabbros, however, upper gabbro whole rock compositions are significantly more enriched in incompatible trace elements relative to the lower gabbros. Our data reveal that the upper gabbros are a composite of accumulated minerals derived from primitive melts and a large fraction of evolved melts derived from the fractionation of the lower gabbros. We propose a new "Full Sheeted Sills" model for the lower oceanic crust in which primitive magmas from the mantle are emplaced throughout the lower crust and crystallized <i>in situ</i>. After diking events, evolved magmas leave the lower gabbros and replenish the upper gabbros, thereby contributing to the higher incompatible trace element budget in the upper gabbros relative to the lower gabbros. Our reconstructed bulk compositions of the lower plutonic crust and the bulk oceanic crust from the Wadi Khafifah section yield a plausible primary mantle-derived magma composition in equilibrium with depleted MORB mantle.</p>
Supplementary Data Tables for Stolper et al. (2022) Constraints on Early Paleozoic deep-ocean oxygen concentrations from the iron geochemistry of the Bay of Islands ophiolite in G-Cubed
<p>Supplementary data tables for Stolper et al. (2022) associated with the paper entitled "Constraints on Early Paleozoic deep-ocean oxygen concentrations from the iron geochemistry of the Bay of Islands ophiolite" published in <em>G-Cubed</em>.</p>
The Fuchuan Ophiolite in South China: Evidence for modern-style subduction in the Neoproterozoic?
<p>Datasets to reproduce the figures and conclusions from the Fuchuan ophiolite manuscript.</p>
Calcium isotope composition for gabbro and rodingite samples from Xigaze ophiolite
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The composition of the lower oceanic crust in the Wadi Khafifah section of the southern Samail (Oman) ophiolite
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