2026-10-11T07:54:06Z https://oai.datacite.org/oai

doi:10.5880/fidgeo.2020.026 2026-09-16T09:41:17Z GFZ TIB.GFZ

2 TIB.GFZ 10.5880/FIDGEO.2020.026 Trippanera, Daniele Daniele Trippanera https://orcid.org/0000-0002-7028-3566 King Abdullah University for Science and Technology (KAUST), Thuwal, Saudi Arabia Urbani, Stefano Stefano Urbani https://orcid.org/0000-0002-0421-022X University of Roma Tre, Department of Sciences, Roma, Italy Kissel, Catherine Catherine Kissel https://orcid.org/0000-0002-2572-2742 Laboratoire des Sciences du Climat et de l'Environnement, CEA, CNRS, UVSQ, Gif-sur-Yvette Cedex, France Winkler, Aldo Aldo Winkler https://orcid.org/0000-0002-0653-0059 Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy Sagnotti, Leonardo Leonardo Sagnotti https://orcid.org/0000-0003-3944-201X Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy Nazzareni, Sabrina Sabrina Nazzareni https://orcid.org/0000-0002-1548-3119 5. University of Perugia, Department of Physics and Geology, Perugia, Italy Acocella, Valerio Valerio Acocella https://orcid.org/0000-0002-1258-9401 University of Roma Tre, Department of Sciences, Roma, Italy Porreca, Massimiliano Massimiliano Porreca https://orcid.org/0000-0001-8628-606X University of Perugia, Department of Physics and Geology, Perugia, Italy GFZ Data Services 2020 Dataset dike dike swarm volcanic system Alftafjordur Iceland intrusion magnetite Anisotropy of Magnetic Susceptibility AMS AARM divergent margin EPOS European Plate Observing System multi-scale laboratories paleomagnetic and magnetic data compound material > rock > igneous rock > basic igneous rock > basalt Density upper continental crustal setting EARTH SCIENCE > SOLID EARTH > TECTONICS EARTH SCIENCE > SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS > MAGMA COMPOSITION/TEXTURE Fracture toughness Pig skin Generic camera Glass/Plexiglas box (cm scale) Intrusive Laboratory intrusion magnetic suzeptibility > anisotropy magnetic suzeptibility > bulk sill Water Yield stress Young modulus Trippanera, Daniele Daniele Trippanera https://orcid.org/0000-0002-7028-3566 King Abdullah University for Science and Technology (KAUST), Thuwal, Saudi Arabia Trippanera, Daniele Daniele Trippanera https://orcid.org/0000-0002-7028-3566 King Abdullah University for Science and Technology (KAUST), Thuwal, Saudi Arabia Winkler, Aldo Aldo Winkler https://orcid.org/0000-0002-0653-0059 University of Roma Tre, Department of Sciences, Roma, Italy Kissel, Catherine Catherine Kissel https://orcid.org/0000-0002-2572-2742 Laboratoire des Sciences du Climat et de l'Environnement, CEA, CNRS, UVSQ, Gif-sur-Yvette Cedex, France Winkler, Aldo Aldo Winkler https://orcid.org/0000-0002-0653-0059 Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy Sagnotti, Leonardo Leonardo Sagnotti https://orcid.org/0000-0003-3944-201X Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy Nazzareni, Sabrina Sabrina Nazzareni https://orcid.org/0000-0002-1548-3119 5. University of Perugia, Department of Physics and Geology, Perugia, Italy Acocella, Valerio Valerio Acocella https://orcid.org/0000-0002-1258-9401 University of Roma Tre, Department of Sciences, Roma, Italy Porreca, Massimiliano Massimiliano Porreca https://orcid.org/0000-0001-8628-606X University of Perugia, Department of Physics and Geology, Perugia, Italy Laboratoire des Sciences du Climat et de l'Environnement CEA, CNRS, UVSQ (Gif-sur-Yvette Cedex, France) Paleomagnetic Laboratory (Universitá di Roma TRE, Italy) 6c110ea0c47b7a32bbe553b6da1ce193 Universitá degli studi "Roma TRE", Rome, Italy Paleomagnetic Laboratory (INGV, Italy) 2cf0b82b7ad792977e26c32eaf79cbb3 INGV, Rome, Italy Trippanera, Daniele Daniele Trippanera https://orcid.org/0000-0002-7028-3566 King Abdullah University for Science and Technology (KAUST), Thuwal, Saudi Arabia Urbani, Stefano Stefano Urbani https://orcid.org/0000-0002-0421-022X University of Roma Tre, Department of Sciences, Roma, Italy 2014-07-01/2020-06-01 2020-06-01 2020 10.1029/2020jb020306 10.1002/2015gl065087 10.1016/0031-9201(77)90108-x http://hdl.handle.net/11104/0163273 Creative Commons Attribution 4.0 International This dataset contains supplementary materials to the manuscripts “Interpreting inverse magnetic fabric in Miocene dikes from Eastern Iceland” by Trippanera et al., (submitted to JGR) and “Anatomy of an extinct magmatic system along a divergent plate boundary: Alftafjordur, Iceland” by Urbani et al. 2015. These works present an extensive multi-scale and multi-disciplinary study focused on the magnetic fabric of dikes belonging to the Alftafjordur volcanic system in Eastern Iceland. Eastern Iceland is one of the most suitable places to analyze the roots of the volcanic systems that are composed of central volcanoes and fissure swarms. We sampled 19 NNE-SSW oriented dikes (for a total of 383 samples) belonging to the exhumed fissure swarm portion of Alftafjordur volcanic system, aiming at understanding the direction of magma propagation in the swarm by using Anisotropy of Magnetic Susceptibility (AMS) analysis. However, most of the samples (80% out of the measured cores) show an inverse geometric magnetic fabric (kmax is perpendicular to the dike margins and sub-horizontal)- therefore the study of the flow direction is complicated. Nevertheless, this result poses the problem of why the geometrically inverse fabric is present and widespread in the whole dike swarm. In order to understand the origin of this inverse fabric, besides standard AMS measurements, we also performed additional analysis such as different field and temperature AMS, Anisotropy of Anhystheretic Remanent Magnetization (AARM), Hysteresis loops and First-order reversal curves (FORC), Scanning Electron Microscope (SEM) and Optic microscope images analysis. <br><br> This dataset includes the following materials: • Location of the sampled sites (.kml) • AMS measurements at room temperature by using H=300 A/m for all samples (.ran) • AMS measurements at room temperature by using H=200 A/m and H=600 A/m for selected samples (.ran) • AMS measurements at different temperature (from 20 to 580 ℃) for selected samples (.ran) • AARM measurements for selected samples (.ran) • DayPlots data for selected samples (.xls or .csv) • SEM and Optical microscope images of thin sections of selected samples. <br><br> AMS and AARM data can be opened through Anisoft open-source software provided by Agico (Chadima and Jelinek, 2009; https://www.agico.com/text/software/anisoft/anisoft.php). Data have been acquired at: Roma Tre University (Rome, Italy), Istuto di Geofisica e Vulcanologia (INGV, Rome, Italy) and Laboratoire des Sciences du Climat et de l'Environnement, CEA, CNRS, UVSQ (Gif-sur-Yvette Cedex, France). <br><br> For the interpretation of the data refer to Urbani et al., 2015 and Trippanera et al., (submitted). The description of each dataset is provided in the description file. Alftafjordur volcanic system -14.8557 -14.0921 64.3933 64.8523