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Metadata Files

Data Publication

Direct-shear experimental data on sedimentary gouge samples under high confining pressure and sliding velocity steps

Castagna, Angela | Ougier-Simonin, Audrey | Walker, Richard | Benson, Philip M

NERC EDS National Geoscience Data Centre

(2023)

Descriptions

This dataset contains raw experimental direct shearspan> testing data as presented by "Ougier-Simonin, A., Castagna, A., Walker, R. J., & Benson, P. M. (2018). Frictional and mechanical behavior of simulated, sedimentary fault gouges. In AGU Fall Meeting Abstracts (Vol. 2018, pp. T11E-0212)". The data is provided in a .zip folder containing the files of 8 experiments that are accompanied by a README file for introduction. Files format is Microsoft Excel Worksheet (.xlsx) and data are tabulated. Each file contains the corresponding relevant sample’s details, and each column of data is clearly labelled, units included. For each experiment, time, axial force, axial displacement, axial stress, confining displacement, confining pressure, internal temperature, and axial delta P were recorded. Details of calculations for shear stress and coefficient of friction are also provided. Eight gouge (rock powder) samples of Monte Salici sandstone (Numidian Flysch, Appenninic-Maghrebian Chain; Sicily), ‘Comiso’ limestone (Ragusa Formation; Sicily) and Quaternary Clays (blue-grey clay in Fiumefreddo, Sicily) were tested in direct shear using sliding holders in triaxial compression at a confining pressure of 50 MPa. After 4 mm of axial (shear) displacement at 1 micron per second, variable rates of axial displacement were applied to induce velocity steps condition and measure rate-and-state parameters. Maximum displacement: ca. 9.8mm. All tests done at room temperature. The experiments were conducted by Drs A. Castagna and A. Ougier-Simonin using the MTS815 Rock Testing System in triaxial configuration and homemade sliding holders in the Rock Mechanics and Physics Laboratory of the British Geological Survey; both responsible for the collection and initial interpretation of the data. One test presented an issue on one of the signals recorded; the data are still shared for information purposes and the corresponding set of data is clearly named to indicate this fact.

Keywords


Originally assigned keywords
sedimentary rock
carbonate rock
limestone
Ragusa formation
sandstone
Monte Salici
clay
Quaternary Clays
Mount Etna basement
Sicily
deformation testing
compression testing
triaxial (conventional) apparatus
direct shear testing
sliding holders
shear stress
strength
shear strength
friction
friction coefficient
velocity steps
rate-and-state coefficients
cohesion
brittle deformation
brittle-ductile deformation
mechanical properties
friction properties

Corresponding MSL vocabulary keywords
sedimentary rock
carbonate minerals
limestone
sandstone
clay
clay
deformation testing
compression testing
shear strength
shear strength
friction coefficient
frictional deformation
friction coefficient
cohesion
cohesion
brittle deformation
brittle-ductile deformation
friction - controlled slip rate
friction - controlled slip rate

MSL enriched keywords
sedimentary rock
minerals
carbonate minerals
limestone
sandstone
silicate minerals
phyllosilicates
clay
unconsolidated sediment
clastic sediment
clay
Apparatus
deformation testing
compression testing
Measured property
mechanical strength
shear strength
Measured property
mechanical strength
shear strength
friction - controlled slip rate
friction coefficient
Inferred deformation behavior
deformation behaviour
frictional deformation
friction - controlled slip rate
friction coefficient
cohesion
cohesion
brittle deformation
brittle-ductile deformation
fault rock
fault gouge
triaxial compression apparatus
shear testing
conventional triaxial apparatus: direct shear
Phanerozoic
Cenozoic
Quaternary

MSL enriched sub domains i

rock and melt physics
analogue modelling of geologic processes

Source

https://www2.bgs.ac.uk/nationalgeosciencedatacentre/citedData/catalogue/d301eda3-299f-41c9-9b8a-7309bea97497.html

Source publisher

NERC EDS National Geoscience Data Centre


DOI

10.5285/d301eda3-299f-41c9-9b8a-7309bea97497


Creators

Castagna, Angela

University of Leicester

Ougier-Simonin, Audrey

British Geological Survey

Walker, Richard

University of Leicester

Benson, Philip M

University of Portsmouth


Citation

Castagna, A., Ougier-Simonin, A., Walker, R., & Benson, P. M. (2023). Direct-shear experimental data on sedimentary gouge samples under high confining pressure and sliding velocity steps [Data set]. NERC EDS National Geoscience Data Centre. https://doi.org/10.5285/D301EDA3-299F-41C9-9B8A-7309BEA97497


Dates

Available:

2023-09-21

Issued:

2023