Dataset
Data Publication
Mechanical data of simulated basalt-built faults from rotary shear and direct shear experiments
Giacomel, Piercarlo | Ruggieri, Roberta | Scuderi, Marco Maria | Spagnuolo, Elena | Di Toro, Giulio | Collettini, Cristiano
GFZ Data Services
(2021)
Descriptions
Here we report the raw data of the friction experiments carried out on basalt-built simulated faults defined by rock-on-rock contacts and powdered gouge. The experiments were specifically designed to investigate the role of fault microstructure on the frictional properties of basalts and the fault slip stability, and were conducted with the rotary-shear apparatus (SHIVA) and the biaxial deformation apparatus (BRAVA), hosted at the National Institute of Geophysics and Volcanology (INGV) in Rome. Simulated faults were sheared at constant normal stress from 4 to 30 MPa. In SHIVA experiments, we deformed samples at constant slip velocity of 10 μm/s up to 56 mm net slip. In BRAVA tests we performed a sequence of velocity steps (0.1 to 300 μm/s), followed by slide-hold-slide tests (30-3000 s holds; V=10 μm/s slides). Our main results highlight the frictionally strong nature of basalt faults and show opposite friction velocity dependence upon the velocity upsteps: while fault gouges exhibit velocity weakening behavior with increasing normal stress and sliding velocity, bare rock surfaces transition to velocity strengthening behavior as we approach higher slip velocities. The experiments setup and data are further described in the manuscript “Frictional properties of basalt experimental faults and implications for volcano-tectonic settings and geo-energy sites” to which these data are supplementary material.
Keywords
Originally assigned keywords
Fault mechanics
Friction of basalts
Rate and State Friction
Bare rock surfaces
Simulated fault gouge
EPOS
multi-scale laboratories
rock and melt physical properties
alkali-olivine_basalt
Biaxial
Friction
Rotary Shear
Strain gauge
Corresponding MSL vocabulary keywords
shear testing
rate and state friction (RSF) parameters
rate and state friction (RSF) parameters
simulated fault gouge
biaxial compression apparatus
friction coefficient
frictional deformation
friction coefficient
rotary shear apparatus
rotary shear apparatus
MSL enriched keywords
Apparatus
deformation testing
shear testing
Measured property
friction - controlled slip rate
rate and state friction (RSF) parameters
Measured property
friction - controlled slip rate
rate and state friction (RSF) parameters
fault rock
fault gouge
simulated fault gouge
compression testing
biaxial compression apparatus
friction coefficient
Inferred deformation behavior
deformation behaviour
frictional deformation
friction coefficient
rotary shear apparatus
Apparatus
characterization of modelling material
frictional property determination
rotary shear apparatus
igneous rock - extrusive
basic extrusive
basalt
conventional triaxial apparatus: direct shear
reactivation friction coefficient
frictional strength recovery
reactivation friction coefficient
tectonic deformation structure
tectonic fault
Analyzed feature
deformation microstructure
brittle microstructure
fault microstructure
Metadata
MSL enriched sub domains
rock and melt physics
analogue modelling of geologic processes
microscopy and tomography
Resource Type
Source
Source publisher
| GFZ Data Services |
DOI
| 10.5880/fidgeo.2020.035 |
Creators
| Giacomel, Piercarlo |
| Personal |
| Sapienza University of Rome, Rome, Italy |
| Ruggieri, Roberta |
| Personal |
| Sapienza University of Rome, Rome, Italy |
| Scuderi, Marco Maria |
| Personal |
| Sapienza University of Rome, Rome, Italy |
| Spagnuolo, Elena |
| Personal |
| National Institute of Geophysics and Volcanology, Rome, Italy |
| Di Toro, Giulio |
| Personal |
| Padua University, Padua, Italy | National Institute of Geophysics and Volcanology, Rome, Italy |
| Collettini, Cristiano |
| Personal |
| Sapienza University of Rome, Rome, Italy |
Contributors
| Giacomel, Piercarlo |
| Personal |
| Sapienza University of Rome, Rome, Italy |
| Ruggieri, Roberta |
| Personal |
| Sapienza University of Rome, Rome, Italy |
| Scuderi, Marco Maria |
| Personal |
| Sapienza University of Rome, Rome, Italy |
| Spagnuolo, Elena |
| Personal |
| National Institute of Geophysics and Volcanology, Rome, Italy |
| Di Toro, Giulio |
| Personal |
| Padua University, Padua, Italy | National Institute of Geophysics and Volcanology, Rome, Italy |
| Collettini, Cristiano |
| Personal |
| Sapienza University of Rome, Rome, Italy |
| HP-HT Laboratory Of Experimental Volcanolgy And Geophysics (INGV, Italy) |
| Personal |
| INGV, Italy |
| Giacomel, Piercarlo |
| Personal |
| Sapienza University of Rome, Rome, Italy |
Citation
Giacomel, P., Ruggieri, R., Scuderi, M. M., Spagnuolo, E., Di Toro, G., & Collettini, C. (2021). Mechanical data of simulated basalt-built faults from rotary shear and direct shear experiments [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2020.035
Dates
| Issued | 2021 |
Language
- no language entry found -
Funding References
| Funder Name | FP7 Ideas: European Research Council |
| Funder Identifier | https://doi.org/10.13039/100011199 |
| Award Number | 614705 |
| Award Title | NOFEAR |
| Funder Name | Collettini 2018 |
| Award Title | Progetti Ateneo La Sapienza |
Rights
| Name | Creative Commons Attribution 4.0 International |
| URI | https://creativecommons.org/licenses/by/4.0/legalcode |
| Identifier | cc-by-4.0 |
| Identifier Scheme | SPDX |
| Scheme URI | https://spdx.org/licenses/ |
Locations
- no geo-locations found -