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Experimental friction data for simulated Nankai Trough gouges sheared under a range of effective normal stress and pore-fluid pressure conditions (NERC Grant NE/S015531/1)

The data are from a suite of friction experiments performed on simulated gouges from the Nankai Trough (Japan). The simulated gouges were prepared by crushing cuttings of Nankai accretionary sediments collected during Integrated Ocean Drilling Program (IODP) Expedition 358. The cuttings were crushed to produce a powder (i.e. simulated gouge) with a grain size of >125 microns. These simulated gouges were sheared under a range of effective normal stress (10-75 Mpa) and pore-fluid pressure (5-75 Mpa) conditions while the sliding velocity was stepped between 0.3 and 3 microns/s to calculated the rate-and-state friction parameter (a-b). The Nankai gouge are strongly rate-strengthening and become more rate-strengthening (i.e. more frictionally stable) at elevated pore-fluid pressure. In contrast, varying the effective normal stress has minimal effect on the frictional stability of the gouges.

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Identification info

Metadata Language
English (en)
Dataset Reference Date ()
2021-03-30
Identifier
http://data.bgs.ac.uk/id/dataHolding/13607728
  University of Liverpool - John Bedford ( Post-doctoral Research Associate )
School of Environmental Sciences, 4 Brownlow Street , Liverpool , L69 3GP ,
  University of Liverpool - Professor Daniel Faulkner ( Professor in Geology and Geophysics )
School of Environmental Sciences, 4 Brownlow Street , Liverpool , L69 3GP ,
  British Geological Survey - Enquiries
  British Geological Survey - Enquiries
Maintenance and update frequency
notApplicable
GEMET - INSPIRE themes
  • Geology
BGS Thesaurus of Geosciences
  • Fault gouge
  • Normal stress
  • Subduction zones
  • Pore pressure
Keywords
  • NERC_DDC
Limitations on Public Access
otherRestrictions
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
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
2020-01-01
End date
2020-10-30
 

Spatial Reference System

No information provided.

Distribution Information

Data format
  • csv ()

Resource Locator
Data
Resource Locator
Data
 
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
Data were collected using a direct shear setup, where layers of Nankai 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. A total of 20 different experiments were performed, at four different effective normal stresses (10, 25, 50 and 75 MPa) and five different pore-fluid pressures (5, 10, 25, 50 and 75 MPa). In each experiment the gouge layers were sheared for an initial 1.5 mm displacement at 0.3 microns/s, before velocity steps of 0.3 to 3 microns/s and back were applied every subsequent 1 mm of displacement to determine the rate-dependence of slip, (a-b). The total displacement in each experiment is 8.5 mm.

Metadata

File identifier
bf8c6c60-12af-4b3f-e054-002128a47908 XML
Metadata Language
English (en)
Resource type
nonGeographicDataset
Hierarchy level name
non geographic dataset
Metadata Date
2023-03-19
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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