Dataset
Data Publication
Mechanical data of rotary shear experiments in bituminous dolostones
Chinello, Miriana | Aretusini, Stefano | Spagnuolo, Elena | Di Toro, Giulio
GFZ Data Services
(2025)
Descriptions
Mirror-like Surfaces (MSs) are ultra-polished fault surfaces widespread in carbonate seismic terrains, but their formation process is still debated. We deformed gouge samples from exposed fault surfaces hosted in bituminous dolostone rocks in a rotary shear apparatus (SHIVA) at seismic slip rates (1 m/s). By changing the water availability (water-pressurised and room-humidity conditions) and the organic matter/dolomite content (> 35%, dark gouge DG; < 30% bright gouge BG) we investigated the mechanical behaviour leading to MSs formation in fault gouges. We run tests at 15 MPa effective normal stress, 2 MPa confinement and 1 MPa pore pressure for the water-pressurised experiments and a total displacement of 0.13 m. Mirror-like fault surfaces were obtained in all successful experiments; mirrors were more developed under room-humidity conditions. Bituminous dolostones under room-humidity conditions had a slip neutral behaviour with a low friction (0.3). Bituminous dolostones under water-pressurised conditions showed a slip weakening behaviour with an initial peak effective friction μp = 0.65, followed by a drop to effective friction μss DG than in BG (i.e., μss of 0.25 vs 0.28). Future work will focus on the microstructural analysis of the experimental products and the investigation of the slip behaviour of bituminous dolostones at sub-seismic slip rates for a complete study of the slip behaviour spectra. This publication results from work conducted under the national open access action at SHIVA (Slow to High Velocity Apparatus) - HP-HT laboratory of experimental Volcanology and Geophysics (INGV, Roma 1 section) supported by WP3 ILGE - MEET project, PNRR - EU Next Generation Europe program, MUR grant number D53C22001400005.
Keywords
Originally assigned keywords
EPOS
multi-scale laboratories
rock and melt physical properties
Friction
Powder Mixture
Rotary Shear
Strain gauge
EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > SEDIMENTARY ROCKS
EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > SEDIMENTARY ROCKS > SEDIMENTARY ROCK PHYSICAL/OPTICAL PROPERTIES
EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > STRAIN
Corresponding MSL vocabulary keywords
friction coefficient
frictional deformation
friction coefficient
rotary shear apparatus
rotary shear apparatus
MSL enriched keywords
Measured property
friction - controlled slip rate
friction coefficient
Inferred deformation behavior
deformation behaviour
frictional deformation
Measured property
friction - controlled slip rate
friction coefficient
Apparatus
deformation testing
shear testing
rotary shear apparatus
Apparatus
characterization of modelling material
frictional property determination
rotary shear apparatus
sedimentary rock
dolomite
fault rock
fault gouge
minerals
carbonate minerals
dolomite
slip weakening parameters
pore fluid pressure
tectonic deformation structure
tectonic fault
Metadata
MSL enriched sub domains
rock and melt physics
analogue modelling of geologic processes
Resource Type
Source
Source publisher
| GFZ Data Services |
DOI
| 10.5880/fidgeo.2025.037 |
Creators
| Chinello, Miriana |
| Personal |
| Università degli Studi di Padova, Padova, Italy |
| Aretusini, Stefano |
| Personal |
| Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy |
| Spagnuolo, Elena |
| Personal |
| Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy |
| Di Toro, Giulio |
| Personal |
| Università degli Studi di Padova, Padova, Italy |
Contributors
| Chinello, Miriana |
| Personal |
| Università degli Studi di Padova, Padova, Italy |
| Aretusini, Stefano |
| Personal |
| Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy |
| Spagnuolo, Elena |
| Personal |
| Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy |
| Di Toro, Giulio |
| Personal |
| Università degli Studi di Padova, Padova, Italy |
| ILGE TNA/NOA Network |
| MEET Project |
| Chinello, Miriana |
| Personal |
| Università degli Studi di Padova, Padova, Italy |
| HP-HT Laboratory Of Experimental Volcanolgy And Geophysics (INGV, Rome, Italy) |
| Personal |
| INGV, Rome, Italy |
| Chinello, Miriana |
| Personal |
| Università degli Studi di Padova, Padova, Italy |
Citation
Chinello, M., Aretusini, S., Spagnuolo, E., & Di Toro, G. (2025). Mechanical data of rotary shear experiments in bituminous dolostones [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2025.037
References
Dates
| Issued | 2025 |
Language
- no language entry found -
Funding References
| Funder Name | Inquire Europe |
| Funder Identifier | https://doi.org/10.13039/501100009333 |
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
Geo location(s)
Study Area: Monte Camicia Thrust Zone, Central Apennines, Italy