Magnetic susceptibility and thin sections data from the the Alftafjordur volcanic system in Eastern Iceland

Tipo Dataset Classe Dati di campioni fisici (campioni e parametri fisici di rocce, minerali e materiali vari)

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 earth interior setting > crust setting > continental-crustal setting > upper continental crustal setting EARTH SCIENCE > SOLID EARTH > TECTONICS EARTH SCIENCE > SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS > MAGMA COMPOSITION/TEXTURE Fracture toughness Gelatine > Pig skin Generic camera Glass/Plexiglas box > Glass/Plexiglas box (cm scale) Intrusive Laboratory magmatic process > intrusion magnetic suzeptibility > anisotropy magnetic suzeptibility > bulk sill Water Yield stress Young modulus


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. 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. 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). 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.

Data e Risorse

Questo dataset non ha dati

Citare come

Trippanera D., Urbani, S., Kissel C., Winkler A., Sagnotti L., Nazzareni S., Acocella V., Porreca M. (2020). Magnetic susceptibility and thin sections data from the the Alftafjordur volcanic system in Eastern Iceland [Data set]. GFZ Data Services. https://doi.org/10.5880/fidgeo.2020.026

Nome campo Valore
Identificativo del dataset (DOI) 10.5880/fidgeo.2020.026
Altro identificativo Codice: ingv_582
Gestore del codice: INGV
Temi del dataset Scienza e tecnologia
Editore del Dataset GFZ Data Services
Data di rilascio 01-01-2020
Data di modifica 07-10-2021
Copertura Geografica Area di competenza dell'unità organizzativa preposta
URI di GeoNames Non disponibile
Lingue del dataset italiano
Estensione temporale Non disponibile
Titolari King Abdullah University for Science and Technology (KAUST)
ROR 01q3tbs38
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
ROR 00qps9a02
IPA ingv
Laboratoire des Sciences du Climat et de l'Environnement (LSCE)
ROR 03dsd0g48
University of Perugia (UniPG)
ROR 00x27da85
Roma Tre University (UniRoma3)
ROR 05vf0dg29
IPA uni_rm3
Frequenza di aggiornamento mai
Versione di Non disponibile
Spatial extent {"type": "MultiPolygon","coordinates": [[[ [-14.8557,64.8523], [-14.0921,64.8523], [-14.0921,64.3933], [-14.8557,64.3933], [-14.8557,64.8523] ]]]}
Autori TRIPPANERA Daniele
King Abdullah University for Science and Technology (KAUST), Saudi Arabia
WINKLER Aldo
Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy
KISSEL Catherine
Laboratoire des Sciences du Climat et de l'Environnement (LSCE), France
SAGNOTTI Leonardo
Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy
NAZZARENI Sabrina
University of Perugia (UniPG), Italy
ACOCELLA Valerio
Roma Tre University (UniRoma3), Italy
PORRECA Massimiliano
University of Perugia (UniPG), Italy

Altri contributori

  • TRIPPANERA Daniele (Referente)
  • TRIPPANERA Daniele (Raccoglitore di dati)
  • WINKLER Aldo (Raccoglitore di dati)
  • KISSEL Catherine (Raccoglitore di dati)
  • WINKLER Aldo (Raccoglitore di dati)
  • SAGNOTTI Leonardo (Capo del progetto)
  • NAZZARENI Sabrina (Raccoglitore di dati)
  • ACOCELLA Valerio (Gestore del progetto)
  • PORRECA Massimiliano (Raccoglitore di dati)
  • TRIPPANERA Daniele (Referente)
  • URBANI Stefano (Referente)