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Ikari, Matt J; Conin, Marianne (2024): Frictional and mechanical properties for a wide range of geologic materials related to cation exchange capacity [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.964844

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Published: 2024-05-21 • DOI registered: 2024-06-19

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Abstract:
Natural faults are known to host a wide range of mineral types, with a wide range of fault strength (quantified by the coefficient of friction) and friction velocity-dependence (quantified by the parameter a-b). In particular the velocity-dependence of friction is important because it partially determines the style of fault slip, from stable creep through a family of slow slip or slow earthquakes, to fast earthquakes. We use a chemical approach related to water-rock interactions. We measured the cation exchange capacity (CEC) of 10 different rock and mineral standards, including non-clays and a range of phyllosilicate minerals. We use the CEC as a proxy for the mineral surface charge and the ability to bind water to the mineral surfaces. For these materials, we conducted laboratory shearing experiments measuring the pre-shear cohesion, peak friction coefficient, residual friction coefficient, post-shear cohesion under 10 MPa effective normal stress. The velocity-dependence of friction a-b was determined from 3-fold velocity step increases in the range 0.1-30 µm/s.
Keyword(s):
cation exchange capacity; cohesion; fault; friction; rate-and-state friction; water-rock reactions
Supplement to:
Ikari, Matt J; Conin, Marianne (2024): Dependence of Simulated Fault Gouge Frictional Behavior on Mineral Surface Chemistry Quantified by Cation Exchange Capacity. Geochemistry, Geophysics, Geosystems, 25(9), e2024GC011678, https://doi.org/10.1029/2024GC011678
Project(s):
Center for Marine Environmental Sciences (MARUM)
Funding:
European Research Council (ERC), grant/award no. 714430: Plate-rate experimental deformation: Aseismic, transient or seismic fault slip
Event(s):
Laboratory-experiments * Method/Device: Experiment (EXP)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
9 datasets

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Datasets listed in this bundled publication

  1. Ikari, MJ; Conin, M (2024): Laboratory experiment of cation exchange capacity (CEC) from rock and mineral standards. https://doi.org/10.1594/PANGAEA.964831
  2. Ikari, MJ; Conin, M (2024): Experiment details of the cation exchange capacity (CEC) laboratory experiment. https://doi.org/10.1594/PANGAEA.964835
  3. Ikari, MJ; Conin, M (2024): Porosity measurements of the cation exchange capacity (CEC) laboratory experiment. https://doi.org/10.1594/PANGAEA.964836
  4. Ikari, MJ; Conin, M (2024): Friction measurements of the cation exchange capacity (CEC) laboratory experiment. https://doi.org/10.1594/PANGAEA.964837
  5. Ikari, MJ; Conin, M (2024): Cohesion measurements of the cation exchange capacity (CEC) laboratory experiment. https://doi.org/10.1594/PANGAEA.964838
  6. Ikari, MJ; Conin, M (2024): Sliding cohesion measurements of the cation exchange capacity (CEC) laboratory experiment. https://doi.org/10.1594/PANGAEA.964840
  7. Ikari, MJ; Conin, M (2024): Velocity-dependent friction measurements, input parameters for forward modeling of the cation exchange capacity (CEC) laboratory experiment. https://doi.org/10.1594/PANGAEA.964841
  8. Ikari, MJ; Conin, M (2024): Velocity-dependent friction measurements, inverse modeling results (Aging Law) of the cation exchange capacity (CEC) laboratory experiment. https://doi.org/10.1594/PANGAEA.964842
  9. Ikari, MJ; Conin, M (2024): Velocity-dependent friction measurements, inverse modeling results (Slip Law) of the cation exchange capacity (CEC) laboratory experiment. https://doi.org/10.1594/PANGAEA.964843