Data from the manuscript: Friction in clay-bearing faults increases with the ionic radius of interlayer cations
Dates
Publication Date
2022-04-04
Start Date
2006
End Date
2008
Citation
Lockner, D.A., Sakuma, H., Solum, J.G., and Davatzes, N.C., 2022, Data from the manuscript: Friction in clay-bearing faults increases with the ionic radius of interlayer cations: U.S. Geological Survey data release, https://doi.org/10.5066/P9PB9UXR.
Summary
Data are time series of clay shearing tests presented in 'Friction in clay-bearing faults increases with the ionic radius of interlayer cations' by Sakuma et al. in Communications Earth & Environment, 2022. Data were used for Figure 1 and Supplementary Figure 8 in that paper. Files contain shear strength as a function of fault slip in laboratory tests for brine-saturated montmorillonite clay.
Summary
Data are time series of clay shearing tests presented in 'Friction in clay-bearing faults increases with the ionic radius of interlayer cations' by Sakuma et al. in Communications Earth & Environment, 2022. Data were used for Figure 1 and Supplementary Figure 8 in that paper. Files contain shear strength as a function of fault slip in laboratory tests for brine-saturated montmorillonite clay.
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DataRelease_metadata_for_Friction_in_Clay.xml Original FGDC Metadata
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Data_Archive_Friction_in_Clay_Bearing_Faults.zip
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Related External Resources
Type: Related Primary Publication
Sakuma, H., Lockner, D.A., Solum, J., and Davatzes, N.C., 2022, Friction in clay-bearing faults increases with the ionic radius of interlayer cations: Communications Earth & Environment, v. 3, no. 1, https://doi.org/10.1038/s43247-022-00444-3.
Montmorillonite clay changes strength depending on the composition of the pore fluid. Distilled water is the weakest. When pore fluid is brine composed of different salts such as NaCl, shear strength increases with increasing cation size. These experiments and numerical modeling (using density-functional-theory, DFT, calculations) demonstrate that the larger cations cause increased interaction between adjacent basal slip surfaces in water-saturated montmorillonite clay.
