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

Triaxial data, hydrostatic loading data, grain size image analysis data and processed representative elementary area (REA) for Bentheim, Castlegate and a synthetic sandstone sample

Rice-Birchall, Elliot

NERC EDS National Geoscience Data Centre

(2023)

Descriptions

We examine the role of cement on compaction band formation by performing triaxial tests on three sandstones, Bentheim, Castlegate and a synthetic sandstone which possess very similar porosities (~26-29%) and grain sizes (~230-300 µm), but which are cemented differently, with syntaxial quartz overgrowths, clay, and amorphous quartz cement respectively. Each sample was taken to 5% axial strain at a starting effective stress equivalent to 85% of its hydrostatic yield (P*) value, which were identified from yield under hydrostatic loading. These data for the 3 samples are presented as matlab data files. Post-deformation, each of the 3 cores underwent backscatter SEM and subsequent image analysis to examine any localised variations in porosity and grain size. These data are presented as csv files. Discrete bands form in each of the 3 sandstones but are distributed differently across each sample. Our results suggest that cement type plays a significant role in the micromechanics of deformation within each of the sandstones, which in turn, determines where the compaction bands nucleate and develop. These results may provide a starting point to investigate the role of cement on compaction localisation further.

Keywords


Originally assigned keywords
Triaxial test
sandstone
compaction bands
pore pressure
porosity
cement

Corresponding MSL vocabulary keywords
triaxial compression apparatus
sandstone
pore fluid pressure
porosity
porosity

MSL enriched keywords
Apparatus
deformation testing
compression testing
triaxial compression apparatus
sedimentary rock
sandstone
Measured property
pore fluid pressure
porosity
Measured property
porosity
Analyzed feature
grain size and configuration
grain size
minerals
silicate minerals
phyllosilicates
clay
tectosilicates
quartz
unconsolidated sediment
clastic sediment
clay
strain
Inferred deformation behavior
deformation behaviour
localized deformation
compaction band
strain
deformation microstructure
pressure solution microstructure
overgrowths

MSL enriched sub domains i

rock and melt physics
analogue modelling of geologic processes
microscopy and tomography

Source

https://www2.bgs.ac.uk/nationalgeosciencedatacentre/citedData/catalogue/b77e0e96-5123-4ae1-acfb-784083b05ad3.html

Source publisher

NERC EDS National Geoscience Data Centre


DOI

10.5285/b77e0e96-5123-4ae1-acfb-784083b05ad3


Creators

Rice-Birchall, Elliot

University of Liverpool


Citation

Rice-Birchall, E. (2023). Triaxial data, hydrostatic loading data, grain size image analysis data and processed representative elementary area (REA) for Bentheim, Castlegate and a synthetic sandstone sample [Data set]. NERC EDS National Geoscience Data Centre. https://doi.org/10.5285/B77E0E96-5123-4AE1-ACFB-784083B05AD3


Dates

Available:

2023-06-08


Funding References

Funder name: Natural Environment Research Council

Funder identifier: https://doi.org/10.13039/501100000270

Funder identifier type: Crossref Funder ID

Award number: NE/L002469/1

Award title: http://gotw.nerc.ac.uk/list_full.asp?pcode=NE%2FL002469%2F1