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Table 2 Density, porosity, and XRF analysis results

From: Quantitative determination of the lowest density domain in major fault zones via medical X-ray computed tomography

Fault name Location Material Sample number Bulk density Porosity Effective atomic number Fault gouge classification Protolith
ρ t φ Z et Active Inactive
MTL Hiji Cataclasite HJ8-1 2.03 19.5 12.30 - - schist
Fault gouge HJ8-2 1.70 25.4 12.04 -
Fault gouge HJ8-3 1.89 13.9 12.24 -
Fault gouge HJ8-4 1.80 19.8 12.12 -
Cataclasite HJ8-5 1.87 17.7 12.11 - -
Mizoguchi Protolith MZ-5 2.77 1.2 12.38 - -
Awano-Tabiki Protolith ATS-2 2.66 2.4 12.64 - - schist
ATS-1 2.61 1.5 12.63 - -
Cataclasite AT-1 2.26 14.4 11.34 - -
Fault gouge AT-2 1.79 20.0 11.52 -
Fault gouge AT-3 2.31 7.4 11.36 - tonalite
Cataclasite AT-4 2.61 1.7 11.45 - -
Cataclasite AT-5 2.44 7.4 11.42 - -
Cataclasite ATR-2,3* 2.56 3.3 12.17 - -
Mylonite ATR-4 2.65 1.0 12.13 - -
Protolith HA-1 2.76 0.6 12.72 - -
Tsuruga Oritodani Protolith K-1 2.58 0.3 12.16 - - granite
Cataclasite C-3 2.47 4.6 12.11 - -
Cataclasite C-2 2.16 16.1 12.10 - -
Fault gouge T-3-1 2.28 10.1 11.96 -
Fault gouge T-3-2 2.27 10.4 12.08 -
Fault gouge T-3-3 2.15 13.4 12.54 - metabasalt
Cataclasite T-3-4 2.23 18.9 13.55 - -
Cataclasite C-1 2.43 12.4 14.10 - -
Protolith T-5 2.90 3.5 13.96 - -
Yamada Mushu Fault breccia YDA-1 1.84 28.0 12.43 - - granite
Fault breccia YDA-2 1.61 36.3 12.43 - -
Fault gouge YDA-3 2.05 14.3 11.99 -
Cataclasite YDA-4 1.98 22.7 12.05 - -
Karakawa Protolith YK-1 2.61 1.7 12.45 - -
- Material Number of samples Bulk density STD Porosity STD Fault activity classification
Mean of all samples Fault breccia 2 1.73 - 32.2 - Active fault
Fault gouge 5 1.92 0.16 17.4 4.6 Active fault
Fault gouge 4 2.16 0.21 12.0 4.8 Inactive fault
Cataclasite 11 2.28 0.24 12.6 6.9 -
Protolith,Mylonite 8 2.69 0.10 1.5 1.0 -
  1. *ATR-2 was used for X-ray CT image analysis and ATR-3 was used for density and XRF analysis.