Triaxial data, hydrostatic loading data and processed representative elementary area (REA), grain size image analysis data for Bentheim, Castlegate and a synthetic sandstone sample (NERC Grant NE/L002469/1)

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.

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Identification info

Metadata Language
English (en)
Dataset Reference Date ()
2023-06-01
Identifier

http://data.bgs.ac.uk/id/dataHolding/13608080

 

University of Liverpool

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Elliot Rice-Birchall

 (

School of Environmental Sciences

 )

Liverpool

 ,

L69 3GP

 ,
 

British Geological Survey

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Enquiries
 

British Geological Survey

 -

Enquiries
Maintenance and update frequency
notApplicable
GEMET - INSPIRE themes
BGS Thesaurus of Geosciences

  • Compaction

  • Compression tests

  • Cements

  • Sandstone

  • Pore pressure

  • Porosity
Keywords

  • NERC_DDC
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otherRestrictions
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no limitations
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The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
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otherRestrictions
Other constraints

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
Other constraints

Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
Topic category
  • Geoscientific information
Begin date
2021-07-01
End date
2022-04-01
 

Spatial Reference System

No information provided.

Distribution Information

Data format

  • csv

     ()

  • txt

     ()

Resource Locator
Data
Resource Locator
Digital Object Identifier (DOI)
Resource Locator
Data
Resource Locator
Digital Object Identifier (DOI)
 
Quality Scope
nonGeographicDataset
Other

non geographic dataset

Report

Dataset Reference Date ()
2011
Explanation

See the referenced specification
Degree

Report

Dataset Reference Date ()
2010-12-08
Explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Degree
Statement

Triaxial tests were conducted on three sandstones using a high-pressure apparatus. Argon was used as the pore fluid. Confining pressure and axial load were controlled and measured with high precision. Yield strengths were determined by monitoring changes in pore volume. A stress-probing method mapped yield curves. Deformation experiments were performed on new samples at 85% of the yield strength. Microstructural analysis involved impregnation with epoxy resin and SEM imaging. Porosity and grain size distribution were analyzed, showing percentage reduction in grain size from the initial state.

Metadata

File identifier
fd88001c-543e-192c-e053-0937940a3d19 XML
Metadata Language
English (en)
Resource type
nonGeographicDataset
Hierarchy level name

non geographic dataset
Metadata Date
2023-06-27
Metadata standard name
UK GEMINI
Metadata standard version

2.3
 

British Geological Survey

Environmental Science Centre,Keyworth

 ,

NOTTINGHAM

 ,

NOTTINGHAMSHIRE

 ,

NG12 5GG

 ,

United Kingdom
+44 115 936 3100
 
 

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