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13 results for “Mid-ocean ridge”
Model data repository of "Styles of Trench-parallel Mid-ocean Ridge Subduction Affect Cenozoic Geological Evolution in circum-Pacific Continental Margins"
<p>This dataset contains the data used in Wu et al. (2022): "Styles of Trench-parallel Mid-ocean Ridge Subduction Affect Cenozoic Geological Evolution in circum-Pacific Continental Margins".</p>
Early pyroxene crystallisation deep below mid-ocean ridges: Supplementary data of gabbro phase mapping
<p>The data repository contains part of the original microscopy imagery datasets from optical microscopy, electron microscopy backscattered electron (SEM-BSE), and Synchrotron X-ray fluorescence microscopy (XFM) experiments presented in <a href="https://doi.org/10.1016/j.epsl.2025.119423">Ubide et al. (2025)</a> <strong>'Early pyroxene crystallisation deep below mid-ocean ridges' by Teresa Ubide<sup>*</sup>, David T Murphy, Robert B Emo, Michael Jones, Marco Acevedo Zamora, and Balz S Kamber</strong></p> <p>Specifically, it includes the QuPath software (<a href="https://www.nature.com/articles/s41598-017-17204-5">Bankhead et al., 2017</a>) project including rock (mid-ocean ridge olivine gabbro) thin sections 81-R5w and 80-R6w. The project contains the semantic image segmentation outputs generated with the <a href="https://qupath.readthedocs.io/en/stable/docs/tutorials/pixel_classification.html">Pixel Classifier</a> and MatLab script described in <a href="https://www.mdpi.com/2075-163X/13/2/156">Acevedo Zamora et al. 2023</a> (see <a href="https://github.com/marcoaaz/Acevedo-Kamber/tree/main/QuPath_generatingMaps">code repository</a>).</p> <p>Sample 80-R6w was segmented using image annotations in QuPath and an input comprising a false-colour Cr-Ti-Ca XFM image, cross-polarised light maximum intensity (XPL-max), and plane-polarised light (PPL-0 degrees) photomicrographs.</p> <p>Similarly, Sample 81-R5w used a false-colour Cr-Ti-Ca XFM image, <a href="https://github.com/marcoaaz/AcevedoEtAl._2024b_autoencoder">deep sparse autoencoder</a> image representation of XFM (after <a href="https://www.sciencedirect.com/science/article/pii/S0009254124000779?dgcid=rss_sd_all">Acevedo Zamora et al., 2024</a>), cross-polarised light (XPL-0 degrees), plane-polarised light (PPL-0 degrees) photomicrographs, and recoloured SEM-BSE (after <a href="https://www.mdpi.com/2075-163X/13/2/156">Acevedo Zamora et al. 2023</a>). </p> <p>The segmentation of both samples provided a conservative estimate of the locations of relict clinopyroxene cores (~4% volume of cpx mask), mantles, and rims in a similar phase map colour scheme for better comparison.</p> <p>If there are questions regarding the utilisation of the data, contact Marco Acevedo (marco.acevedozamora@qut.edu.au ; maaz.geologia@gmail.com).</p>
Thermo-hydro-chemical simulation of mid-ocean ridge hydrothermal systems: Static 2D models and effects of paleo-seawater chemistry
<p>DePaolo et al. Gcubed 2022 data files</p> <p><strong>Thermo-hydro-chemical simulation of mid-ocean ridge hydrothermal systems: </strong></p> <p><strong>Static 2D models and effects of paleo-seawater chemistry </strong></p> <p> </p> <p>In this folder are input and output files for v3.68 of TOUGHREACT that contain all of the files illustrated in the manuscript plus many more. Also included is v3 TOUGHREACT reference manual, which gives more information on all of the input and output files.</p> <p>In each folder there are a sequence of run folders, each containing input files (flow.inp, solute.inp, chemical.inp, MESH, GENER, plus a thermodynamic database with filename like “tkslth06acp3isi9.dat.” Also included are raw tecplot files (flowvector.tec, flowdata.tec, rct_sfarea.tec, rctn_rate.tec, min_SI.tec, minerals.tec, aqconc.tec) and other output files (all “.out” files). In some cases the .tec files, which are combined files with output for both fractures and matrix, have been separated into separate fracture and matrix files with names like “flowvector_frc.tec,” “flowvector_mtx.tec,” aqconc_frc.tec,” “aqconc_mtx.tec” to allow plotting of fracture and matrix properties separately.</p> <p>Some folders also contain .tiff or .png files that are 2D color contour plots as shown in the manuscript. All of these plots were made with Paraview (<a href="https://www.paraview.org/">https://www.paraview.org</a>) which is open-source.</p> <p>Each folder labeled like “Modern SW fastcpx Sr8…” contains several subfolders each labeled with the model year at which the run ends, like 2000, 2600, 2700, 2800, … which correspond to the warmup steps described in the manuscript:</p> <p>The typical procedure used to achieve the results reported here is (with some minor variations):</p> <ol> <li>Run the simulation for 2000 model years with 50% of the final heating from below and minimal chemical reactions. RSA for primary minerals in both matrix and fractures are set to 10<sup>-6</sup> cm<sup>2</sup>/g and 2 x 10<sup>-6</sup>cm<sup>2</sup>/g for secondary minerals, which yields chemical reaction rates about 500 times slower than for a more realistic system.</li> <li>Run for an additional 600 model years with the full heating from below and RSA’s at 10<sup>-6</sup> cm<sup>2</sup>/g and 2 x 10<sup>-6</sup> cm<sup>2</sup>/g. This step yields a steady state temperature and flow field with the full heating from below. Less time is needed than for the first phase because the fluid flow velocities are higher with higher heating rates.</li> <li>Run an additional 100 years; RSA’s increased to 10<sup>-5</sup> cm<sup>2</sup>/g and 2 x 10<sup>-5</sup> cm<sup>2</sup>/g</li> <li>Run 100 years; RSA’s at 10<sup>-4</sup> cm<sup>2</sup>/g and 2 x 10<sup>-4</sup> cm<sup>2</sup>/g*</li> <li>Run 100 years; RSA’s at 2 x 10<sup>-4</sup> cm<sup>2</sup>/g and 4 x 10<sup>-4</sup> cm<sup>2</sup>/g*</li> <li>Run 50 years; RSA’s at 3 x 10<sup>-4</sup> cm<sup>2</sup>/g and 5 x 10<sup>-4</sup> cm<sup>2</sup>/g*</li> <li>Run 50 years; RSA’s at 4 x 10<sup>-4</sup> cm<sup>2</sup>/g and 8 x 10<sup>-4</sup> cm<sup>2</sup>/g*</li> <li>Run 100 additional years*</li> </ol> <p>After step 8 the system has been running for 3100 model years, but only 150 years with full reactions, which is long enough to get close to quasi-steady state fluid chemistry (there is no true steady state for chemistry because the rock mineralogy is changing with time). For each of the steps marked with an asterisk, an alternative procedure is to use high RSA’s for fracture minerals, up to 50 times higher. </p> <p>In some folders there are additional subfolders extending in model time up to 3400 years.</p>
Supplementary Material from: Extreme mantle heterogeneity revealed by geochemical investigation of in-situ lavas at the central Mohns Ridge, Arctic Mid-Ocean Ridges
<p>Geochemical data (major and trace elements + Pb, Sr and Nd isotopes) from the Mohns and Knipovich Ridges generated during the study: Extreme mantle heterogeneity revealed by geochemical investigation of in-situ lavas at the central Mohns Ridge, Arctic Mid-Ocean Ridges</p>
Pulsated Global Hydrogen and Methane Flux at Mid-Ocean Ridges driven by Pangea Breakup (Supplementary Material)
<p>Supplementary Material for Merdith et al, Pulsated Global Hydrogen and Methane Flux at Mid-Ocean Ridges driven by Pangea Breakup, published in G-cubed.</p>
Figure 4 in Cranchiids of the South Atlantic Mid-Oceanic Ridge: results from the first southern MAR-ECO expedition
Figure 4. Tentacle clubs of cranchiin and taoniin species. (A) Leachia cf. atlantica, ME 38942, mantle length (ML) 28.8 mm. (B) Bathothauma cf. lyromma sucker, ME 38494, ML 10.0 mm. (C, D) Galiteuthis armata: (C) ME 38550, ML 16.0 mm; (D) ME 38534, Ml 37.1 mm. Scale bars = (A, C, D) 1 mm, (B) 20 µm.
Figure 1 in Cranchiids of the South Atlantic Mid-Oceanic Ridge: results from the first southern MAR-ECO expedition
Figure 1. Locations sampled with the Isaacs–Kidd Midwater Trawl during the South Atlantic MAR-ECO cruise, 25 October to 29 November 2009. Stations with and without catches of cranchiid squids are represented by different symbols. Boxes indicate three sectors targeted by the R/V Akademik Ioffe in the South Atlantic: South Equatorial Mid-Atlantic Ridge Sector (upper box), Tropical Mid-Atlantic Ridge Sector (middle box) and Walvis Ridge Sector (lower box).
Figure 7 in Cranchiids of the South Atlantic Mid-Oceanic Ridge: results from the first southern MAR-ECO expedition
Figure 7. Bayesian topology of cranchiid relationships obtained using the GTR + Γ (general time reversible + gamma) model. The tree was constructed using nine new cranchiid cytochrome oxidase subunit I sequences [Table 3] in addition to 14 cranchiid sequences obtained from GenBank. Bayesian posterior probabilities are presented above the nodes and maximumlikelihood bootstraps below the nodes. * indicates a posterior probability of 1.0.
Figure 3 in Cranchiids of the South Atlantic Mid-Oceanic Ridge: results from the first southern MAR-ECO expedition
Figure 3. Tentacle clubs of cranchiin species. (A) Cranchia scabra, ME 38828, mantle length (ML) 10 mm. (B–D) Liocranchia reinhardti: (B) ME 39432, ML 7.7 mm; (C) ME 39772, ML 11.2 mm; (D) ME 38838, ML 41.1 mm. Scale bars = 500 µm.
Figure 6 in Cranchiids of the South Atlantic Mid-Oceanic Ridge: results from the first southern MAR-ECO expedition
Figure 6. Tentacle clubs of taoniin species. (A) Helicocranchia cf. pfefferi, ME 38898, mantle length (ML) 12.8 mm; (B) Megalocranchia sp., ME 39935, ML 59.2 mm; (C) Teuthowenia pellucida, ML 39697, ML 28.9 mm. Scale bars = (A) 500 µm, (B) 1 mm, (C) 100 µm.
Figure 2 in Cranchiids of the South Atlantic Mid-Oceanic Ridge: results from the first southern MAR-ECO expedition
Figure 2. Cranchiin specimens collected by SA MAR-ECO. (A) Cranchia scabra, ME 38828, mantle length (ML) 10 mm. (B, C) Liocranchia reinhardti: (B) ME 39772, ML 9.4 mm; (C) ME 38338, ML 41.1 mm. Scale bars = (A, B) 1 mm, (C) 10 mm.
Planktonic foraminifera-bound d15N data for "Ocean iron fertilization by sea-level enhanced mid-ocean ridge volcanism "
Open the record for dataset details and reuse information.
Data used in paper "Crustal structure across the extinct mid-ocean ridge ..."
<p>Seismograms are used for generating receiver functions for 11 OBS in the Central sub-basin of the SCS. We note that seismograms are windowed to include only the P wave (40 s and 60 s before and after the predicted arrivals). </p> <p>Note: This dataset can only be downloaded to verify the RF results. it can not be used for other seismic applications since it has already been allocated to specific groups that are working on seismic tomography, anisotropy, noise analysis, microearthquake relocations, and waveform modeling. Please contact us at: tyang@sustech.edu.cn for more information. </p>
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International Brain Laboratory public data
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OpenNeuro
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