Kamafugites are 'exotic igneous rocks' with mineralogical and chemical compositions that differ from those observed in common magmas. Despite their importance, kamafugites are still a poorly constrained topic and they lack a general petrological model due to their variable petrographic, geochemical and isotopic features. A detailed comparison among kamafugites is necessary to obtain a deeper understanding of the processes involved in their petrogenesis and of their strongly metasomatised mantle sources. Therefore, this data publication doesn’t only provide new geochemical and isotopic data from kamafugites, but a comprehensive data compilation for kamafugite samples in the Western branch of the East Africa Rift (WEAR) in Uganda and Democratic Republic of Congo, the Intra-Apennine Province (IAP), as well as for the Alto Paranaiba (APIP) and Goiás (GAP) provinces in Brazil. 97 kamafugite whole-rock data for the WEAR, 42 for IAP and 51 for APIP and GAP have been collected and compared to highlight similarities and differences, aiming to reconstruct their petrogenesis. The new data in this data publication results from work conducted at Laboratory of Geochronology and Radiogenic Isotope Geochemistry - Pisa1 (IGG-CNR, Italy) supported by WP3 ILGE - MEET project, PNRR - EU Next Generation Europe program, MUR grant number D53C22001400005.
This dataset is supplemental to the paper Wallis et al. (2021) and contains data on dislocations and their stress fields in olivine from the Oman-UAE ophiolite measured by oxidation decoration, electron backscatter diffraction (EBSD) and high-angular resolution electron backscatter diffraction (HR-EBSD). The datasets include images of decorated dislocations, measurements of lattice orientation and misorientations, densities of geometrically necessary dislocations, and heterogeneity in residual stress. Data are provided as 6 TIF files, 8 CTF files, and 37 tab-delimited TXT files. Files are organised by the figure in which the data are presented in the main paper. Data types or sample numbers are also indicated in the file names.
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.
Mit numerischen Modellen sollen chemische und dynamische Prozesse der Atmosphaere und deren Wechselwirkung miteinander untersucht werden. Im Zentrum des Interesses steht dabei der Ozonhaushalt der unteren Stratosphaere. Dazu stehen ein globales Modell der mittleren Atmosphaere und ein mesoskaliges Modell der Troposphaere und unteren Stratosphaere zur Verfuegung. Im Rahmen des Vorhabens EPOS (Episodenrechnungen und Prozessstudien zum Ozonhaushalt in der Stratosphaere) werden dynamische und chemische Prozesse, die fuer den Ozonhaushalt der Atmosphaere von Bedeutung sind, global simuliert. MESSTRO (Mesoskalige Simulation und obere Troposphaere) hingegen konzentriert sich auf mesoskalige Prozesse in der unteren Stratosphaere und oberen Troposphaere, wobei der Massenfluss durch die Tropopause und dessen Einfluss auf den Ozonhaushalt im Tropopausenbereich den Schwerpunkt der Untersuchungen bildet.
The pilot site Ketzin is the longest-operating European onshore CO2 storage site and the only one in operation in Germany. Since the beginning of the storage activity at the end of June 2008, more than 56.000 tons of CO2 were successfully injected until December2011. CO2 is injected into a saline aquifer. It consists of 630 m to 650 m deep sandstone units of the Stuttgart Formation of Upper Triassic age. They were deposited in a fluvial environment. A sequence of about 165 m of overlaying mudstones and anhydrites is sealing the storage complex and act as a caprock. The research and development programme at Ketzin is among the most extensive worldwide in the context of geological CO2 storage. Research activities have produced a broad data base and knowledge concerning the storage complex at Ketzin as well as generic cognition This data publication compiles and reviews the operational data recorded at the Ketzin pilot site for 2008 (injection data: CO2 mass flow, temperatures, pressures, flow rate, etc.).
The pilot site Ketzin is the longest-operating European onshore CO2 storage site and the only one in operation in Germany. Since the beginning of the storage activity at the end of June 2008, more than 56.000 tons of CO2 were successfully injected until December2011. CO2 is injected into a saline aquifer. It consists of 630 m to 650 m deep sandstone units of the Stuttgart Formation of Upper Triassic age. They were deposited in a fluvial environment. A sequence of about 165 m of overlaying mudstones and anhydrites is sealing the storage complex and act as a caprock. The research and development programme at Ketzin is among the most extensive worldwide in the context of geological CO2 storage. Research activities have produced a broad data base and knowledge concerning the storage complex at Ketzin as well as generic cognition This data publication compiles and reviews the operational data recorded at the Ketzin pilot site for 2010 (injection data: CO2 mass flow, temperatures, pressures, flow rate, etc.).
The pilot site Ketzin is the longest-operating European onshore CO2 storage site and the only one in operation in Germany. Since the beginning of the storage activity at the end of June 2008, more than 56.000 tons of CO2 were successfully injected until December2011. CO2 is injected into a saline aquifer. It consists of 630 m to 650 m deep sandstone units of the Stuttgart Formation of Upper Triassic age. They were deposited in a fluvial environment. A sequence of about 165 m of overlaying mudstones and anhydrites is sealing the storage complex and act as a caprock. The research and development programme at Ketzin is among the most extensive worldwide in the context of geological CO2 storage. Research activities have produced a broad data base and knowledge concerning the storage complex at Ketzin as well as generic cognition This data publication compiles and reviews the operational data recorded at the Ketzin pilot site for 2013 (injection data: CO2 mass flow, temperatures, pressures, flow rate, etc.).
This dataset provides friction data from drained ring-shear tests on a wet (water saturated) silica powder-glass beads-PVC powder mixture (40:40:20 wt.%) “CM2”, used in analogue modelling of tectonic and erosion processes as a rock analogue for the earth’s upper crust (e.g. Conrad et al., 2023, Reitano et al., 2020, 2022. 2023). According to our analysis the materials show a Mohr-Coulomb behaviour characterized by a linear failure envelope. Peak, dynamic and reactivation friction coefficients of CM2 are µP = 0.66, µD = 0.58, and µR = 0.61, respectively. Cohesion of the material ranges between 60-230 Pa. The tested bulk material CM2 consists of a mixture of 40 wt. % silica powder, 40 wt.% glass beads and 20 wt.% PVC powder which has been saturated with water (Table 1). Specification of silica powder is “Ventilated Quartz VR16” (https://www.valligranulati.it/products-granules-quartz-marble-sands-premixed/sheet-m/ventilated-quartz) by the company Valli Granulati S.r.l. (Italy). Ventilated quartz is obtained by micronisation of quartz sands with a high content of SiO2 (around 96%), and used e.g. in paints and abrasives. It should be handled with care to omit generation of dust and a half mask (filter class FFA1P2 RD) should be worn because it can harm the human respiratory tract with the potential of causing silicosis. Glass beads used here have a size (diameter) of 700-110 µm and their individual properties are described in detail Pohlenz et al. (2020). The commercial name for the PVC powder is “PVC K.57 Inovyn 257RF” by the company TPV Compound (Italy). PVC powder is mainly used for cleaning industrial structures (as abrasives) or for the production of PVC tubing, plastic sheets etc. The composition of this PVC powder is the same of the common Polyvinyl chloride. According to the regulation CE n.1272/2008 (CLP), this type of PVC powder is classified as not dangerous for the supply, also thanks to its low value of density and round shape.
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