Date (Creation)

2020-08-28

Citation identifier

http://data.bgs.ac.uk/id/dataHolding/13607663

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Liverpool	John Bedford	not available	Originator
University of Liverpool	John Bedford	not available	Principal investigator
British Geological Survey	Enquiries	not available	Distributor
British Geological Survey	Enquiries	not available	Point of contact

Maintenance and update frequency

notApplicable

GEMET - INSPIRE themes, version 1.0

• Geology

BGS Thesaurus of Geosciences

• Friction (engineering)

• Shear strength

• Quartz

• NGDC Deposited Data

• Fault gouge

• Normal stress

dataCentre

• NGDC Deposited Data

Keywords

• NERC_DDC

Access constraints

Other restrictions

Other constraints

licenceOGL

Other constraints

Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Use constraints

Other restrictions

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]"

Language

English

Topic category

• Geoscientific information

Begin date

2017-10-20

End date

2020-01-13

Distribution format

Name	Version
MS Excel

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	not available	Distributor

OnLine resource

Protocol	Linkage	Name
	https://www.bgs.ac.uk/services/ngdc/accessions/index.html#item137431	Data

Hierarchy level

Non geographic dataset

Other

non geographic dataset

Statement

Data were collected using a direct shear setup, where layers of quartz gouge were sheared in a triaxial deformation apparatus. In the direct shear geometry the normal stress is applied by the confining pressure (Pc), and pore fluid pressure (Pf) is introduced to the sample through the three porous disks on each of the direct shear forcing blocks. Deionized water was used as the pore fluid, which was held at a constant pressure of 20 MPa for all experiments in this study. The samples are sheared by the axial piston of the triaxial apparatus at a constant displacement rate of 1 µm/s. The evolution of shear stress is monitored by an internal force gauge, with a measurement resolution better than 0.05 kN, while the effective normal stress (=Pc-Pf) is held constant by servo-controlled pumps, with a resolution better than 0.1 MPa, on both the confining and pore pressure systems.

Metadata

File identifier

ae6a04e8-43fa-0183-e054-002128a47908 XML

Metadata language

English

Hierarchy level

Non geographic dataset

Hierarchy level name

non geographic dataset

Date stamp

2025-07-15

Metadata standard name

UK GEMINI

Metadata standard version

2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey		enquiries@bgs.ac.uk	Point of contact

Dataset URI

http://data.bgs.ac.uk/id/dataHolding/13607663