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

Velocity-dependent slip weakening by the combined operation of pressure solution and foliation development

Niemeijer, Andre

GFZ Data Services

(2018)

Descriptions

Phyllosilicate-bearing faults are characterized by an anastomosing foliation with intervening hard clasts and are believed to be long-term weak structures. Here, I present results of sliding experiments on gouges of 80 wt% quartz and 20 wt% muscovite, sheared under hydrothermal conditions at constant velocity. The results show that significant strengthening occurs over a narrow range of sliding velocities (0.03-1* m-6/s). At the lowest velocity investigated, weakness is achieved after a considerable sliding distance of over 20 mm with friction reaching a value of 0.3. Microstructural observations and the application of existing models point to the operation of frictional-viscous flow (FVF), through the serial operation of frictional sliding over a weak foliation and pressure solution of intervening clasts, resulting in low frictional strength and pronounced velocity-strengthening. At higher velocities, grain size reduction becomes dominant in a localized zone, which results in disruption of the foliation and the cessation of the FVF mechanism. In natural settings, earthquakes originating elsewhere on the fault would be rapidly arrested when encountering a foliated part of the fault deforming via FVF. Furthermore, pulses of elevated slip velocity would lead to grain size reduction which would destroy the foliation and cause a long-term strengthening of the fault.

Keywords


Originally assigned keywords
Friction
Hydrotherrmal
Foliation
Pressure solution
Quartz-muscovite
EPOS
European Plate Observing System
multi-scale laboratories
rock and melt physical properties

Corresponding MSL vocabulary keywords
friction coefficient
frictional deformation
friction coefficient
foliation
rate of pressure solution
pressure solution

MSL enriched keywords
Measured property
friction - controlled slip rate
friction coefficient
Inferred deformation behavior
deformation behaviour
frictional deformation
Measured property
friction - controlled slip rate
friction coefficient
Analyzed feature
deformation microstructure
generic deformation microstructure
foliation
coupled mechanical-chemical effects
rate of pressure solution
microphysical deformation mechanism
time-dependent mechanism
pressure solution
slip weakening parameters
tectonic deformation structure
tectonic fault
minerals
silicate minerals
phyllosilicates
mica
muscovite
tectosilicates
quartz
Apparatus
deformation testing
shear testing
rate and state friction (RSF) parameters
frictional strength
grain size and configuration
grain size

MSL enriched sub domains i

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

Source

https://dataservices.gfz-potsdam.de/panmetaworks/showshort.php?id=escidoc:3049889

Source publisher

GFZ Data Services


DOI

10.5880/fid.2018.006


Creators

Niemeijer, Andre

Utrecht University - Department of Earth Sciences

ORCID:

https://orcid.org/0000-0003-3983-9308


Contributors

Niemeijer, Andre

ContactPerson

Utrecht University - Department of Earth Sciences

ORCID:

https://orcid.org/0000-0003-3983-9308

Niemeijer, Andre

DataCollector

Utrecht University - Department of Earth Sciences

ORCID:

https://orcid.org/0000-0003-3983-9308

Niemeijer, Andre

ProjectLeader

Utrecht University - Department of Earth Sciences

ORCID:

https://orcid.org/0000-0003-3983-9308

Experimental Rock Deformation/HPT-Lab (Utrecht University, The Netherlands)

HostingInstitution

Utrecht University, The Netherlands


References

10.1038/s41598-018-22889-3


Citation

Niemeijer, A. (2018). Velocity-dependent slip weakening by the combined operation of pressure solution and foliation development [Data set]. GFZ Data Services. https://doi.org/10.5880/FID.2018.006


Dates

Created:

2018-03-01

Issued:

2018


Language

en


Funding References

Funder name: FP7 Ideas: European Research Council

Funder identifier: https://doi.org/10.13039/100011199

Funder identifier type: Crossref Funder ID

Award number: 335915

Award title: Seismic

Funder name: Netherlands Organization for Scientific Research

Funder identifier type: Crossref Funder ID

Award number: 854.12.011

Award title: Vidi


Rights

CC BY 4.0