Unfortunately this page does not have a mobile or narrow screen view. Please switch to a desktop computer or increase the size of your browser. For tablets try flipping the screen.

Metadata Files

Data Publication

Direct shearspan> strength testing data on sedimentary gouge samples under high confining pressure

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., Benson, P. and Walker, R. (2017). Direct shear characterisation of simulated clay-bearing gouges: a case study from the Pernicana Fault System (Mount Etna, Sicily). In EGU 2017 General Assembly Conference Abstracts (p. 15794)". The data is provided in a .zip folder containing the files of 12 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. Twelve 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 range of confining pressures of 10, 30 and 50 MPa. Clay and sandstone samples tests were conducted at 0.3 microns per second of axial displacement rate; limestone and mixed gouges tests were conducted at 1 micron per second. 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.

Keywords


Originally assigned keywords
sedimentary rock
carbonate rock
limestone
Ragusa formation
sandstone
Monte Salici
clay
Quaternary Clays
Sicily
deformation testing
compression testing
triaxial (conventional) apparatus
direct shear testing
sliding holders
shear stress
strength
shear strength
friction
friction coefficient
steady state coefficients
cohesion
brittle deformation

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

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
shear testing
conventional triaxial apparatus: direct shear
triaxial compression apparatus
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/0e5cb2cf-f2fc-4f07-8f5c-5152637c398a.html

Source publisher

NERC EDS National Geoscience Data Centre


DOI

10.5285/0e5cb2cf-f2fc-4f07-8f5c-5152637c398a


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 strength testing data on sedimentary gouge samples under high confining pressure [Data set]. NERC EDS National Geoscience Data Centre. https://doi.org/10.5285/0E5CB2CF-F2FC-4F07-8F5C-5152637C398A


Dates

Available:

2023-09-21