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Permeability measured on three samples in a triaxial cell under effective confining pressure from 0.2 to 2.5 MPa ranges from 10**-18 to 10**-19 m**2. Overall, results indicate that permeability decreases with effective confining pressure up to 1.5 MPa; however, measurements at low effective pressure are too dispersed to yield a precise general relationship between permeability and pressure. When the effective pressure is increased from 1.5 to 2.5 MPa, permeability is roughly constant (~1-4 x 10**-19 m**2). Samples deformed in the triaxial cell developed slickenlined fractures, and permeability measurements were performed before and after failure. A permeability increase is observed when the sample fails under low effective confining pressure (0.2 MPa), but not under effective pressure corresponding to the overburden stress. Under isotropic stress conditions, permeability decrease related to fracture closure occurs at a relatively high effective pressure of ~1.5 MPa. Coefficients of friction on the fractures formed in the triaxial cell are ~0.4.

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PANGAEA - Publishing Network for Geoscientific & Environmental Data  


Bourlange, Sylvain -  Jouniaux, Laurence -  Henry, Pierre - 

Id.: 55213161

Idioma: inglés  - 

Versión: 1.0

Estado: Final

Tipo:  application/zip, 3 datasets - 

Palabras clave# = 5000 -  2500 -  µ -  190 -  1173A -  1174B -  Axial effective stress -  Axial strain -  Calculated -  Calculated from density and depth interval -  cumulative decrease -  Deformation -  Deformation structure, type -  Depth -  DEPTH, sediment/rock -  Description -  deviatoric stress/mean effective stress -  DRILL -  Drilling/drill rig -  effective confining pressure -  effective confining stress -  Effective overburden pressure -  Effective stress -  Epsilon a -  Estimated -  Event -  f -  Friction angle -  Friction coefficient -  Joides Resolution -  k -  l -  Leg190 -  Length -  Lithology -  Lithology/composition/facies -  max -  mbsf -  min -  normal stress -  Ocean Drilling Program -  ODP -  ODP sample designation -  orientation -  method comment -  Overb press -  Overb press ef -  Overburden pressure -  P -  Permeability, standard deviation -  Permeability (earth science) -  Permeab std dev -  Philippine Sea -  Poros -  Porosity -  Pressure, stress -  Pulse decay method for permeability (Brace et al. 1986, Jouniaux et al. 1994) -  Ratio -  Sample code/label -  Sample comment -  Sample label -  sample orientation -  Shear stress -  Sigma -  SigmaA ef -  Std. dev. is 0.15 for all -  strain maximum of the plateau in % -  strain minimum of the plateau in % -  Tau -  Void Ratio -  Void Ratio description - 

Cobertura:  MEDIAN LATITUDE: 32.277030 * MEDIAN LONGITUDE: 135.002243 * SOUTH-BOUND LATITUDE: 32.244380 * WEST-BOUND LONGITUDE: 134.956430 * NORTH-BOUND LATITUDE: 32.342330 * EAST-BOUND LONGITUDE: 135.025150 * DATE/TIME START: 2000-05-28T12:02:00 * DATE/TIME END: 2000-06-22T22:30:00 - 

Tipo de recurso: Dataset  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: CC-BY: Creative Commons Attribution 3.0 Unported

Formatos:  application/zip, 3 datasets - 

Requerimientos técnicos:  Browser: Any - 

Relación: [IsBasedOn] Supplement to: Bourlange, Sylvain; Jouniaux, Laurence; Henry, Pierre (2004): Data report: Permeability, compressibility, and friction coefficient measurements under confining pressure and strain, Leg 190, Nankai Trough. In: Mikada, H; Moore, GF; Taira, A; Becker, K; Moore, JC; Klaus, A (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 190/196, 1-16, doi:10.2973/odp.proc.sr.190196.215.2004

Fecha de contribución: 06-mar-2017


* doi:10.1594/PANGAEA.779765

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