In this work we aimed to investigate and quantify the relative importance of dynamic conditions (e.g., stirring in a Concentric Cylinder apparatus) on the crystallization kinetics of basaltic magmas (Stromboli). This was achieved by observing the final textures of the samples, analysing the resulting SEM images, and finally relating the resulting parameters to specific growth and nucleation rates.
The dataset is made of:
1) A folder called "SEM Images" with two sub-folders inside, representative of the two experiments carried out, called "CG1" and "CG2.3"
2) An Excel file, consisting in 4 data sheets, where all results of image analysis are included, divided in sections. The sheets are also available in CSV format.
This publication results from work conducted under the transnational access/national open access action at High Pressure - High Temperature Laboratory (HPHT Lab), Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy supported by WP3 ILGE - MEET project, PNRR - EU Next Generation Europe program, MUR grant number D53C22001400005.
The USGS has suspended the distribution of the widely used whole rock reference materials BHVO, BCR and BIR. The goal of this work is to identify a material as similar as possible to the original BIR Islandic basalt. This material can then undergo an ISO-compliant certification of the whole rock powder major and trace element contents.
The sampling quarry east of Reykjavik has multiple basalt flows and it is not known which one was originally sampled in 1980 for production of above mentioned reference materials. In this study, three samples were tested to see which is most similar to what was published by Flanigan (1984). Here, the results of this exploratory sample collection are presented, but note that these data are not part of the certification process or represent certified results.
Full element (major elements, minor elements, platinum-group elements and gold) analysis of high- and low-Mg lavas from several eruptions of Tolbachik volcano, Kamchatka, Russia. Eruptions include 2012-13, 1975-76, 1941 and several recent prehistoric (<1400 years old) eruptions. Major elements were measured by XRF, minor elements by ICP-MS and platinum-group elements and gold were measured using Ni-sulfide fire assay and ICP-MS. All analyses were undertaken at Geoscience Laboratories (Geo Labs) Ontario Geological Survey in 2019. These data were originally published as a supplement to Kutyrev et al. (2021), Noble Metals in Arc Basaltic Magmas Worldwide: A Case Study of Modern and Pre-Historic Lavas of the Tolbachik Volcano, Kamchatka, In Frontiers in Earth Science (9), https://doi.org/10.3389/feart.2021.791465.
This work was funded by the Ministry of Science and High Education of the Russian Federation (Grant No 075-15-2019-1883), The National Research Foundation (NRF) of the Korean government (No. 2019R1A2C1009809A) and the Russian Science Foundation (Grant #21-17-00122).
Data supporting the publication Hornby, AJ, Kueppers U, Maurer BM, Poetsch C and Dingwell DB (2020) "Experimental constraints on volcanic ash generation and clast morphometrics in pyroclastic density currents and granular flows". In this study, fine ash is generated from lapilli-sized volcanic pumice and scoria in rotary tumbler experiments. We seek to explore ash production processes and clast attrition in natural PDCs, and gain insight into the controlling parameters for particle production efficiency with PDC transport distance. We vary the starting mass, apparatus size, and material properties and tumble clasts over multiple transport distance steps from 0.2-6 km.
The data are provided in ASCII or image formats as one zipped folder (2020-025_Hornby-et-al_data.zip) and organised in the following sub-folder structure (for more information please consult the associated data description and Hornby et al (2020):
(1) Experimental methods, apparatus and data collections
(2) Ash generation data for tumbling experiments
(3) Laser particle size distribution data for ash generated in tumbling experiments
(4) Post-experimental lapilli size (generated via 3-axis caliper measurements), mass, bulk density and dense rock equivalent (DRE) porosity results
(5) 2D image analysis morphology results
(6) 2D image analysis size results
(7) Cropped, scaled and thresholded images lapilli used for morphometric analysis
(8) Image analysis macros and workflow for ImageJ
(9) Integrated analysis of results
This project has received funding from the European Union's Horizon 2020 research and innovation programme.