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11 results for “Igneous”
Constraints on the emplacement of Martian nakhlite igneous rocks and their source volcano from advanced micro-petrofabric analysis
<p>Martian nakhlite meteorite electron backscatter data and magma body unit thickness calculation code.</p>
Supplementary data to "Destruction and regrowth of lithospheric mantle beneath large igneous provinces"
<p>Database files to accompany "<em>Destruction and regrowth of lithospheric mantle beneath large igneous provinces</em>", By <a href="http://www.science.org/doi/10.1126/sciadv.adf6216">Stephenson et al. (2023)</a>. The article can be accessed by following <a href="http://www.science.org/doi/10.1126/sciadv.adf6216">this permanent link</a>.</p> <p>The primary resources in this database are (i) estimates of melt equilibration pressure and temperature calculated using the scheme of <a href="https://github.com/fmcnab/meltPT">McNab & Ball (2023)</a>; (ii) a database of lithospheric thickness estimates beneath modern intraplate magmatic provinces using geochemical and seismological techniques; (iii) a database of the outlines and ages of large igneous provinces, substantially updated from <a href="http://https://doi.org/10.1029/93RG02508">Coffin & Eldholm (1994)</a>, and <a href="https://doi.org/10.5670/oceanog.2006.13">Coffin et al. (2006)</a>; (iv) a database of large igneous province eruption centres; and (v) a document of references used to build these databases. Files are numbered as in the Supplementary Information of <a href="http://www.science.org/doi/10.1126/sciadv.adf6216">the paper.</a> Please see below for more details.</p> <ol> <li><strong>Data S1</strong>. A database of global geochemical compositions of mafic intraplate magmatic rocks compiled by <a href="http://doi.org/10.1038/s41467-021-22323-9">Ball et al (2021)</a>, and corresponding estimates of melt equilibration pressure and temperature P<sub>eq</sub> and T<sub>eq</sub>, respectively; <a href="http://www.science.org/doi/10.1126/sciadv.adf6216">this study</a>). Note that authors should cite <a href="http://doi.org/10.1038/s41467-021-22323-9">Ball et al. (2021)</a> in reference to the global geochemical database. They should cite <a href="http://www.science.org/doi/10.1126/sciadv.adf6216">Stephenson et al (2023)</a> in reference to the global equilibration pressure and temperature estimates, in which case they should also cite <a href="http://github.com/fmcnab/meltPT">McNab & Ball (2023)</a>, whose software was used to calculate P<sub>eq</sub> and T<sub>eq</sub>.</li> <li><strong>Data S2</strong>. A spreadsheet containing modern-day lithospheric thickness estimates beneath modern intraplate provinces. For complete references to geochemical analyses contained in this database, please see <a href="https://doi.org/10.1038/s41467-021-22323-9">Ball et al (2021)</a>. The database includes lithospheric thickness estimates obtained <ul> <li>by exploiting melt equilibration pressure and temperature <a href="http://www.science.org/doi/10.1126/sciadv.adf6216">(this study)</a>;</li> <li>by inverse modelling of rare earth element compositions <a href="https://doi.org/10.1038/s41467-021-22323-9">(Ball et al., 2021)</a>; and</li> <li>from the lithospheric thickness model of<a href="https://doi.org/10.1038/s41561-020-0593-2"> Hoggard et al. (2020)</a>, which is based upon the tomographic model of <a href="https://doi.org/10.1093/gji/ggt095">Schaeffer & Lebedev (2013)</a>.</li> </ul> </li> <li><strong>Data S3</strong> & <strong>S4</strong>. A database containing outlines of magmatic provinces dating back to 750 Ma, including <ul> <li>a directory (Data_S3.zip) containing the unfiltered database shape files (lips.shp, lips.shx, lips.dbf, lips.cpg). This directory also contains the same data in a multisegment text file for plotting in the Generic Mapping Tools (polys_ID_age_unfiltered.dat) in which each polygon is separated by '>' where the header indicates polygon ID and time since eruption. And</li> <li>a database filtered for final magmatic event in a given location (Data_S4.dat), where each polygon header also contains '>' ID age polygon_area'. See <a href="http://www.science.org/doi/10.1126/sciadv.adf6216">the paper</a> for methodological details.</li> </ul> </li> <li><strong>Data S5</strong>. A database of located LIP eruption centres.</li> <li><strong>Data S6</strong>. A pdf document of references. The document includes <ul> <li>references used to update locations and ages of the large igneous province database of <a href="http://doi.org/10.5670/oceanog.2006.13">Coffin et al. (2006)</a>;</li> <li>references for existing lithospheric thickness models used test our observed LAB depth as a function of time relationship; and</li> <li>references used to locate the eruption centres of mantle plumes (i.e. Data S5; <a href="http://www.science.org/doi/10.1126/sciadv.adf6216">this study</a>).</li> </ul> </li> </ol>
Age and geochemistry of High Arctic Large Igneous Province tholeiitic magmatism in NW Axel Heiberg Island, Canada
<p>Original data presented in Excel format to accompany the paper "Age and geochemistry of High Arctic Large Igneous Province tholeiitic magmatism in NW Axel Heiberg Island, Canada" by Deegan et al. (2023), published in <em>Geochemistry, Geophysics, Geosystems </em>in the special collection on Arctic magmatism ("Through the Arctic Lens: Progress in Understanding the Arctic Ocean, Margins and Landmasses").</p> <p>The file contains major and trace element data, Sr-Nd-Pb isotope data, and Ar-Ar dates for a suite of mafic rocks (lavas, dikes, and sills) from Bukken Fiord, NW Axel Heiberg Island, Canadian Arctic Islands.</p>
Seismic acquisition parameters to improve imaging beneath mafic igneous units: Case study from Australia's Northwest Shelf; supplementary material
<p>This dataset comprises two supplementary materials. Supplementary Materials A includes seismic processing workflows conducted by industry on the seismic lines used in this study. The seismic processing workflows are not the property of the author but are publicly available on the NOPIMS and WAPIMS databases. Collating these workflows into supplementary materials provides a simple method for readers to access material important for this research paper. Supplementary Materials B is a collection of 2D seismic lines the author conducted stratigraphic horizon mapping on for this study as viewed in 3D. More details on this dataset can be found throughout the research paper "Seismic acquisition parameters to improve imaging beneath mafic igneous units: Case study from Australia’s Northwest Shelf".</p>
Visible and Near-Infrared Reflectance Spectra of Igneous Rocks and Their Powders
<p>Spectral reflectance data for "Visible and Near-Infrared Reflectance Spectra of Igneous Rocks and Their Powders".</p>
Supplementary Data Sets for Machine Learning Tracks the Role of Slab-Derived Fluids in Large Igneous Province/CUGBZL
<p>Supplementary Dataset S1: All data collcted from both the GEOROC database and recent literature published in Chinese and English journals and books.<span></span></p> <p>Supplementary Dataset S2: Data after cleaning.</p> <p>Supplementary Dataset S3: Prediction results.</p>
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>
A database for the igneous rocks of the Newfoundland Appalachians
<p>The present dataset contains 14,867 samples of igneous rocks with spatial information, covering all tectonic units within Newfoundland Appalachians. The petrographic, geochemical, isotopic, and chronologic details are sourced from peer-reviewed publications, encompassing existing datasets, recent literature, and academic dissertations. Additionally, the database incorporates our unpublished chronological and isotopic data.</p>
High-magnesium igneous associations give new insights into geodynamic evolution of the accretionary Central Asian Orogenic Belt
<p>Much controversy exists regarding the evolution and termination of accretionary orogens where typical continent-continent collision features are lacking. The Central Asian Orogenic Belt (CAOB) thus provides a golden opportunity. Precise zircon dating identified two-stage Triassic magmatic events in the southeast CAOB. The Olenekian andesites show typical sanukitoids affinities and yield depleted Hf isotopic compositions and high δ<sup>18</sup>O values, indicating that they were originated by partial melting of mantle peridotites with input of 20% terrigenous sediments. The Norian diorites have geochemical characteristics comparable with high-Mg adakites. Their depleted isotopic compositions and high Th/Nb and Ba/Nb ratios conform to an origin that melting of delaminated mafic lower crust subsequently interacted with mantle materials. These two-stage abnormal Triassic high-Mg rocks archive hot slab window triggered by break-off the Paleo-Asian oceanic slab and lower-crustal delamination related to collapse of the southeast CAOB. This study further benefits the reconstruction of East-Asian blocks in Pangea.</p>
Data and code for Keller et al. (2023) "Links between large igneous province volcanism and subducted iron formations," published in Nature Geoscience
<p>Data and computer code used to generate results for Keller et al. (2023) "<em>Links between large igneous province volcanism and subducted iron formations</em>." A readme file in the folder gives a description for each file. Data may also be accessed from the article link on the publisher's website.</p>
U-Pb, Lu-Hf, and O in zircon from igneous and sedimentary rocks from the Ellsworth Mountains, West Antarctica
<p>This dataset includes U-Pb, Lu-Hf, and O analyses of zircons from two igneous rocks: sample EHD0701A (79°57'47.43"S, 82°56'58.32"W) and sample EHD0305A (80°03'00.87"S, 82°59'07.91"W). EHD0701A is a foliated porphyritic hornblende micro-diorite, while EHD0305A is a basaltic andesite. Additionally, it contains Lu-Hf and O analyses of detrital zircon grains from ten meta-sedimentary samples: 13EG-01, 13EG-02, EHD2302A, EHD0801A, 13EG-05, EHD1705A, EA6, EAM1001B, 13EG-15, and 13EG-10. The coordinates for these samples and U-Pb data are published in Castillo et al. (2017). Zircon separation and analysis were conducted at the Australian National University in Canberra, Australia.</p> <p>Castillo, P., Fanning, C.M., Fernandez, R., Poblete, F., Hervé, F. 2017. Provenance and age constraints of Paleozoic siliciclastic rocks from the Ellsworth Mountains in West Antarctica, as determined by detrital zircon geochronology. GSA Bulletin 129, 1568-1584.</p>
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