2026-10-11T11:28:27Z https://oai.datacite.org/oai

doi:10.5880/fidgeo.2018.013 2026-09-16T09:40:47Z GFZ TIB.GFZ

5 TIB.GFZ 10.5880/FIDGEO.2018.013 Giacomel, Piercarlo Piercarlo Giacomel https://orcid.org/0000-0002-1553-7842 Sapienza University of Rome, Rome, Italy Spagnuolo, Elena Elena Spagnuolo https://orcid.org/0000-0002-1377-5812 Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy Nazzari, Manuela Manuela Nazzari Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy Marzoli, Andrea Andrea Marzoli University of Padua, Padua, Italy Passelegue, François François Passelegue École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland Youbi, Nasrrddine Nasrrddine Youbi https://orcid.org/0000-0003-3466-2400 Cadi Ayyad University, Marrakech, Marocco Di Toro, Giulio Giulio Di Toro https://orcid.org/0000-0002-6618-3474 University of Padua, Padua, Italy GFZ Data Services 2018 Dataset CO2 storage in basalts Induced seismicity Role of fluid pressure on fault reactivation Basalt carbonation EPOS multi-scale laboratories rock and melt physical properties basalt Friction Rock Rotary Shear Strain gauge Giacomel, Piercarlo Piercarlo Giacomel https://orcid.org/0000-0002-1553-7842 Sapienza University of Rome, Rome, Italy Spagnuolo, Elena Elena Spagnuolo https://orcid.org/0000-0002-1377-5812 Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy Nazzari, Manuela Manuela Nazzari Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy Marzoli, Andrea Andrea Marzoli University of Padua, Padua, Italy Passelegue, François François Passelegue École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland Youbi, Nasrrddine Nasrrddine Youbi https://orcid.org/0000-0003-3466-2400 Cadi Ayyad University, Marrakech, Marocco Di Toro, Giulio Giulio Di Toro https://orcid.org/0000-0002-6618-3474 University of Padua, Padua, Italy HP-HT Laboratory of Experimental Volcanolgy and Geophysics (INGV, Italy) INGV, Italy Piercarlo, Giacomel Giacomel Piercarlo Sapienza University of Rome, Rome, Italy 2018 en 10.1029/2018gl078082 Creative Commons Attribution 4.0 International Here we report the raw data of the friction experiments performed on basalt-built faults pressurized with de-ionized H2O, pure CO2, pure Ar, and H2O+CO2 mixtures, respectively (Dataset_friction_basalts.zip). The experiments were designed to assess the effects of the fluid chemistry on fault reactivation in faults juxtaposing basalts with different state of hydrothermal alteration. The experiments setup and data are further described in Giacomel et al (2018) to which these data are supplementary material. <br><br> Laboratory faults were deformed at a constant normal stress over the range from 10 to 20 MPa, at a shear stress of 5 MPa and a starting fluid pressure from 0.5 to 5 MPa. Fluid pressure was increased stepwise of 0.1 MPa/100 s up to induce macroscopic frictional instability, i.e. the equivalent to a main shock in nature. <br><br> Our mechanical data point to the paucity of any significant chemical weakening due to fluid-rock interation, regardless of the composition of the injected fluid and the degree of hydrothermal alteration of basalts. Moreover, microRaman investigation evidenced a few carbonate patches at the end of the tests performed in H2O+CO2 mixtures (Dataset_raman_calcite_s1018.txt and Dataset_raman_dolomite_s1018.txt).