cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5880/fidgeo.2025.054
title: Dataset of wehrlitization process: insights from X-ray Micro-CT of Mt. Vulture (southern Italy) mantle xenoliths

description: The study of textural and chemical characteristics of mafic minerals from mantle xenoliths is essential to investigate the nature of the upper mantle in a continental geodynamic context, melts generation and their effects related to mantle metasomatism. Particular textures in mantle minerals, inclusions or secondary veins of different nature (silicates vs carbonates), bubbles, represent petrographic tools to investigate these processes within the mantle. Petrographic 2D thin sections might overlook these mineralogical features, and 3D textural analysis through X-ray computed microtomography (micro-CT) are crucial to overcome these limitations. 
 
We focused on the Mt. Vulture volcano (southern Italy) rare mantle xenoliths, brought to the surface by a melilitite-carbonatite magma (141 ka), with particular emphasis to spinel-wehrlite xenoliths and wehrlitization processes that is located close to an area of intense CO2 degassing associated to catastrophic earthquakes. 
 
Preliminary results showed interesting 3D textural distributions within the studied xenoliths-forming mantle minerals. In particular, the micro-CT allowed to furnish new constrains on the relationship between fluids entrapment and migration, and structural discontinuities. Indeed, some minerals (especially those from the wehrlite xenoliths) showed a well-correlated distribution of fluid inclusions along the secondary fracturing planes. 
 
This publication results from work conducted under the transnational access/national open access action at Istituto Nazionale di Geofisica e Vulcanologia – Osservatorio Vesuviano (INGV-OV) and supported by WP3 ILGE - MEET project, PNRR - EU Next Generation Europe program, MUR grant number D53C22001400005. The author thanks also Gianmarco Buono and Lucia Pappalardo for their support during the analyses and the post processing process.
DOI: 10.5880/fidgeo.2025.004
title: Electron microprobe analyses of quenched melts (now glass), chromite, and olivine to determine the role of contamination on chromite crystallization in ultramafic magmas

description: The data were generated in two labotories of the Dalhousie University in Halifax during a series of experiments to determine the solubility of chromite in komatiite mixed with different crustal contaminants. The experiments were designed to determine the solubility of the mineral chromite in silicate melt, with the dominant variable being the silica and iron content of the melt. 
 
After equilibrating chromite with melt at 1192-1430 degrees Celcius, samples were quenched and the composition of the chromite, quenched melt (now glass), and olivine run-products were measured for major and minor elements by electron microprobe, and the chromium concentration in the glass was measured by laser ablation ICP-MS. Analytical procedures are included in the associated data description file. 
 
The data are provided in a series of Excel worksheets containing five data tables. Table 1 is a summary of the composition of the starting materials used in experiments. Table 2 is a summary of the conditions of temperature, oxygen fugacity, experiment duration and initial sample composition. Table 3 is a summary of the major and minor element composition of the glass measured by electron microprobe and laser ablation ICP-MS. Tables 4 and 5 are summaries of the major and minor element composition of the olivine and chromite, respectively, measured by electron microprobe.
DOI: 10.5880/fidgeo.2025.017
title: High-resolution quantitative electron microprobe analysis of garnets from Holsnøy, Norway

description: The island of Holsnøy is located in southwestern Norway. It is composed of metastable granulite facies lower crust that was subducted at 430 Ma when fluid infiltrated the region and reacted with large portions of the area to form eclogite facies shear zones. The eclogite facies assemblages contain garnet with granulite facies cores and eclogite facies fractures and rims. 
 
This dataset contains quantitative electron microprobe transects from garnets from four different eclogite facies samples. They are divided into two groups: rim profiles that run from the garnet rims toward the cores, and fracture profiles that run perpendicular to eclogite facies fractures. Some profiles have 5–10 µm spacing and were collected at 15 kV accelerating voltage whereas others have 1 µm spacing and were collected at 10 kV which reduced analytical convolution and facilitated higher spatial resolution of the profiles.
description: Twelve quantitative chemical profiles were collected from garnets from four thin sections using the JEOL JXA-8530F field-emission gun electron probe microanalyzer (EPMA) at Yale University employing a focused beam, wavelength-dispersive spectrometers, linear off-peak background corrections, natural and synthetic standards, and ϕ(ρz) matrix corrections.
DOI: 10.5281/zenodo.17877657
title: Carbon, Nitrogen, and Phosphorus Contents of Trees, Shrubs, and Herbs and the Physicochemical Properties of Soil in Picea likiangensis Forests on the Qinghai–Tibet Plateau
DOI: 10.5281/zenodo.17877658
title: Carbon, Nitrogen, and Phosphorus Contents of Trees, Shrubs, and Herbs and the Physicochemical Properties of Soil in Picea likiangensis Forests on the Qinghai–Tibet Plateau
DOI: 10.5880/gfz.4.1.2023.007
title: Fault database of the Northern Chile forearc between 18°50’S and 19°45’S

description: The knowledge about the distribution of active faults is crucial for hazard assessment (Costa et al., 2020; Santibáñez et al., 2019; Wesnousky, 1986) but also provides insights into tectonic control on hydrological processes (Binnie et al., 2020; Jeffery et al., 2013; Pan et al., 2013) or georesource distribution (Goldsworthy & Jackson, 2000; Viguier et al., 2018). Furthermore, tectonically driven topographic uplift and its impact on climate (Armijo et al., 2015; Houston & Hartley, 2003; Rech et al., 2019; Zhisheng et al., 2001) can be better understood if a systematically mapped fault database exists. 
 
Here we present an active fault database, as well as the distribution of drainages, for an area between 18.50°S and 19.45°S in Northern Chile forearc, which were systematically mapped in the framework of the project “Cluster C05-Tectonic Geomorphology: Adaptation of drainage to tectonic forcing” of the CRC1211- Earth Evolution at the Dry Limit. 
 
The Central Andes forearc at this latitude is located at a highly tectonically active convergent margin and hosts major earthquakes not only on the plate boundary itself (e.g., Métois et al., 2016), but also in the overriding crust (e.g., Comte et al., 1999). It comprises, from west to east, the Coastal Cordillera, Longitudinal Valley and the Western Flank of the Altiplano, showing an impressive amount of topographic variability of ca. 4000 m. Nevertheless, Neogene crustal tectonic structures and surface deformation are poorly documented. The overall landscape appears as a gentle west-sloping pediplain dissected by deep transversal canyons (quebradas), which reach the current Pacific Ocean (Mortimer, 1980). The Longitudinal Valley is a sedimentary basin filled with 432 to 2000 m of Tertiary to Quaternary deposits derived from the Altiplano in the east as well as the Coastal Cordillera in the west (García et al., 2017). Its surface is composed by a multiphase planation surface called the Pacific Paleosurface (PPS), which distribution is suggested to be controlled by crustal tectonics (Evenstar et al., 2017). Depending on the low ratio of tectonic displacement rate to sedimentation rate, many active faults are hidden and only a specialized approach of high-resolution fault mapping, together with a morphometric analysis of the drainage pattern provides systematic information about the distribution of active faults, folds and related structures. 
 
The present fault database is the result of creating a comprehensive catalogue of faults classified by the age of last proven/probable tectonic activity. This is accompanied by a compilation of existing age data and a map of drainage pattern. These datasets were compiled in QGIS 3.16.5 (https://www.qgis.org) and are available as. gpkg for GIS applications and as .kml formats to be visualized in Google Earth.
DOI: 10.5880/fidgeo.2024.041
title: Ring-shear test data of white mica used for analogue modelling in the Tectonic Laboratory (TecLab) at Utrecht University

description: This dataset provides friction data from ring-shear tests white mica (Muscovite) used for analogue modelling in the Tectonic Laboratory (TecLab) at Utrecht University. 
 
According to our analysis the materials show a Mohr-Coulomb behaviour characterized by a linear failure envelope. Peak, dynamic and reactivation friction coefficients of white mica sand are µP = 0.60, µD = 0.56, and µR = 0.55, respectively (Table 5). Cohesion of the material ranges between 140-180 Pa. The tested bulk material consists of white mica (Muscovite) with grain sizes ranging from 45-600 µm with the following distribution: 45-106µm – 10-25%, 106-425µm – 65-85%, 425-600µm – &lt;2.5%.
DOI: 10.5880/fidgeo.2025.074
title: Arctic Greening Database

description: The Arctic Greening Database v0.1 is an open access database created as part of the ETH+ project "Unraveling biogeochemical, microbial and vegetation feedbacks driving soil development and Arctic greening under a warming climate". The database contains data on soil, vegetation, microbial, and environmental properties from 14 active-layer tundra sites sampled in 2022 and 2023 on Svalbard. The spatially-explicit field observations, field and laboratory measurements provides an interdisciplinary collection of data from a remote and data-poor region to study linkages between vegetation, microbiome and pedogenesis in the context of Arctic Greening. 
 
The database is structured hierarchically with four connected levels: site, plot, sample, and species. At the site level, aggregated data are provided (e.g. GHG fluxes). This is followed by plot-level data (e.g. plant functional type cover) that connects to sample-level data (soil organic matter content) and species-level data. Tables at the same level are connected via one-to-one relationships, from a broader to finer level one-to-many relationships are in place. Sampling and measurement procedures are described in Section 2 of the database description. The metadata file accompanying a specific .csv file provides further information on data creation, sample processing and units. The current version of the dataset consists of a reduced set of tables that will be updated soon with more curated data from Svalbard and Northern Norway (Finnmark). A more extensive overview of the data will be published as a data paper in the future.
description: A detailed description of the methods can be found in the metadata files for each data table. In addition to that, a general description document is provided which contains information on the sampling design, the study area, and the database structure.
description: The database description and metadata files provide technical information. An exemplary use of the database is shown in the demo files. They show simple examples of how to use and query data from the database.
DOI: 10.5880/fidgeo.2023.028
title: Hydrological, pedological, dendrological and meteorological measurements in a blackberry-alder agroforestry system in South Africa

description: The described dataset resulted from a joint multidisciplinary measurement campaign in an agroforestry system in the Western Cape region in South Africa. Five participating institutions measured a range of environmental variables to characterise the influence of windbreak trees onto water fluxes, nutrient distribution and microclimate in the adjacent blackberry field. The dataset contains spatially collected soil characteristics, a soil profile description, time series of meteorological measurements as well as soil moisture and matric potential, information on soil hydraulic properties of the soil determined in the laboratory and windbreak characteristics and shape from a point cloud derived from terrestrial LiDAR scanning.
DOI: 10.5880/gfz.rdoq.2025.003
title: Discharge data for flood events at 516 river gauges across Germany (1954–2021), generated using the perfect storm method

description: This dataset comprises discharge values for all flood events at 516 river gauges across Germany, generated using our perfect storm method. The discharge data were simulated with the mesoscale hydrological model (mHM). In total, the dataset includes 120 scenarios: 110 recombined events and 10 original flood events.
description: This dataset comprises discharge value of all the flood events for 516 river gauges in Germany, which is produced by our perfect storm method. The discharge data is simulated with the mesoscale hydrological model mHM. In total, there are 120 scenarios including 110 recombined events and the 10 original flood events.
description: File description: 
There are in total 12 setups, which represent 12 rainfall events. Inside each of the setup folders, there are 12 events files, which represent the original/recombination with 12 soil moisture events.
DOI: 10.5880/fidgeo.2025.040
title: High-Precision Iron Isotopic Analysis of IAEA-B5 basalt and rock Reference Materials

description: We report the results of high throughput, robust, and sensitive method for the precise analysis of 56Fe/54Fe and 57Fe/54Fe, performed using Multi-Collector-Inductively Coupled Plasma-Mass Spectrometer (MC-ICP-MS), Thermo Scientific Neptune PlusTM. We measured the Fe isotope compositions of widely used standard reference materials ranging from basaltic to rhyolitic compositions (JB-2, BHVO-2, BE-N, AGV-1, and RGM-1). We also propose a new iron isotope reference material, IAEA-B5, a basalt from Mount Etna already commonly used as a reference for B and Li isotopes. 
 
Funding information: EU-Next Generation EU Mission 4 ‘Education and Research’-Component 2: ‘From research to business’-Investment 3.1: ‘Fund for the realization of an integrated system of research and innovation infrastructures’-Project IR0000032-ITINERIS-Italian Integrated Environmental Research Infrastructures System-CUP B53C22002150006. EPOS European Plate Observing System
DOI: 10.5880/gfz.3.1.2024.009
title: Basaltic glasses for quantification of CO2 and H2O content by Secondary Ion Mass Spectrometry (SIMS)

description: Accurate analyses by Secondary Ion Mass Spectrometry (SIMS) require the use of matrix-matched reference materials due to instrumental mass fractionation. The goal of this data publication is to report a first SIMS homogeneity test of experimentally produced basaltic glasses (Shishkina et al. 2010, Shishkina 2012) to evaluate their potential use as internal reference materials (RMs) for quantification of H2O and CO2 in the GFZ SIMS laboratory. These samples were originally prepared to shed light on magma storage and pre-eruptive conditions as well as degassing paths of natural basaltic systems. The GFZ SIMS laboratory has mm-size chips of 13 samples in total mounted in the centre of an epoxy disc with a diameter of 25.4 mm. All analysed basaltic glasses are relatively homogeneous at the microscale, with relative standard deviations (1RSD) of 1.9 to 15.1% for C/Si, 1.6 to 6.5% for OH/Si and 0.4 to 4.5% for SiH/Si. While the relationship of measured C/Si ratios versus nominal CO2/SiO2 concentrations is described by a linear function, the relationships of OH/Si and SiH/Si ratios versus nominal H2O/SiO2 concentrations are described by quadratic functions. Eight samples (M2, M5, M6, M30, M39, M43, M70 and N72) can be used to quantify CO2 by SIMS in basaltic glasses with concentrations up to 5943 µg/g. Nine samples (M2, M5, M22, M30, M39, M43, M49, M70 and N72) can be used to quantify H2O in basaltic glasses with concentrations up to 8.81 wt.%. We note that H2O quantifications using the measured SiH/Si ratios are less accurate than those using the OH/Si ratios, hence we recommend using the latter. Measured backgrounds in the blank glass N72 were ca. 10 µg/g for CO2 and 0.06 wt.% for H2O. The relative uncertainties on CO2 and H2O calculated values (i.e., SIMS bias) are 12 to 25% (CO2 &lt; 1000 µg/g) and ca. 13% (H2O &lt; 1 wt.%). At higher concentrations (CO2 &gt; 3000 µg/g and H2O &gt; 1 wt.%), uncertainties are lower (2 to 5% for carbon and &lt; 6% for water). In addition to the SIMS data, we provide the synthesis conditions, chemical compositional data, and bulk H2O and CO2 contents of the investigated basaltic glasses.
DOI: 10.5880/enmap.2021.001
title: Bode catchment, MOSES heatwave, Germany 2020

description: The dataset is composed of Neo HySpex (VNIR & SWIR) and Telops Hyper-Cam (LWIR) hyperspectral imagery acquired during the MOSES GFZ/FUB/UFZ airborne campaign on August 8th, 2020 over the test area Oschersleben covering parts of the Bode catchment in the northern foreland of the Harz Mountain, Central Germany. The study area covers an ecological transect including three TERENO climate stations/flux towers ranging from forest sites (Hohes Holz) to lowland meadows (Grosses Bruch) to intensively used agricultural land (Hordorf). The survey was conducted within the frame of the Helmholtz program MOSES (Modular Observation Solutions for Earth Systems) heatwave event chain, which overall objective is to monitor heat extremes and drought events. In particular, the 2020 MOSES heatwave campaign over the Oschersleben test site aimed at an GFZ/UFZ intercalibration comparison measurements between different hyperspectral instruments flown on same day with different platforms and altitude, and test impact of different workflows on resulting data. This publication contains the GFZ VNIR-SWIR-LWIR hyperspectral dataset. It includes 1) 17 HySpex cloud-free flight lines already mosaicked in orthorectified reflectance, covering the VNIR to SWIR wavelength regions (0.4-2.5 µm) with 408 spectral bands, and 2) a composite of Hyper-Cam 1956 frames processed to surface temperature and spectral emissivity covering the LWIR (7.7 – 11.7 µm) in 125 bands. The dataset also includes Level 2A EnMAP-like reflectance imagery simulated using the end-to-end Simulation tool (EeteS). Associated field data and UFZ hyperspectral data are included in related publications of this campaign.
description: The HySpex raw data were radiometrically corrected and transformed from at sensor radiance to orthorectified surface reflectance using the GFZ in-house processing chain HyPrepAir (Brell et al. 2016) and ATCOR-4 for atmospheric modelling. Then the flight stripes were composed into a single orthorectified reflectance mosaic with fused VNIR-SWIR spectral data with a spatial resolution of 4.0 m GSD. Simulated EnMAP L2A data products in reflectance were generated using the EnMAP end-to-end simulation software (Segl et al. 2012), resulting in a simulated hyperspectral data cube at 30m spatial resolution with 242 bands. The Hyper-Cam LW data were radiometrically calibrated and orthorectified to thermal-IR geocorrected radiance. Atmospheric correction and temperature-emissivity separation (TES) are performed on the orthorectified radiance mosaic using the software FLAASH-IR for the retrieval of land surface temperature (LST) and land surface emissivity (LSE) products.
DOI: 10.15468/dl.vvdmpn
title: Occurrence Download

description: A dataset containing 3749 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Australia",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Solanum sisymbriifolium"
 ]
}

 The dataset includes 3749 records from 26 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0044171-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.d9sr9v
title: Occurrence Download

description: A dataset containing 4879 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Icerya purchasi)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "Year is not null",
 "BasisOfRecord is one of (Human Observation, Occurrence evidence)",
 "Year is greater than or equal to 2010",
 "Year is less than or equal to 2025"
 ]
}

 The dataset includes 4879 records from 31 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0044170-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5880/fidgeo.2025.087
title: Rheology of PDMS silicones used for analogue modelling in the experimental tectonics laboratory at China University of Petroleum (CUP)

description: This dataset provides rheometric data of three PDMS silicones used for analogue modelling in the experimental tectonics laboratory at China University of Petroleum (CUP). 
 
The material samples have been analyzed at the Laboratory for Experimental Tectonics at GFZ Helmholtz Centre for Geosciences, Potsdam (HelTec) using an Anton Paar Physica MCR 301 rheometer in a plate-plate configuration at room temperature (21˚C). Rotational (controlled shear rate) tests with shear rates varying from 10^4 to 1 s^-1 were performed. 
 
According to our rheometric analysis, the material is quasi-Newtonian (n~1) at strain rates below 10-2 s-1 and weakly shear rate thinning above. The viscosities of the three materials range between 8*10^4 to 3*10^5 Pa s.
DOI: 10.5880/digis.2025.007
title: Geochemical compositions and rheological properties of mantle peridotites from the Zhongba ophiolite

description: We present comprehensive geochemical compositions and rheological properties of mantle peridotites from the Zhongba ophiolite. The geochemical dataset includes major element compositions of whole rock, as well as major and trace elements of olivine, orthopyroxene, clinopyroxene, and spinel. Water contents of olivine and pyroxenes are also provided. In addition, electron backscattered diffraction (EBSD) data includes calculated stress and detailed profiles. Analytical methods and supplementary figures are included to clearly present the dataset.