Shipton, Z. K., <strong>and</strong> Cowie, P. A., 2001, Damage zone <strong>and</strong> slip-surface evolution over micrometre to kilometre scales in high-porosity Navajo s<strong>and</strong>stone, Utah: Journal <strong>of</strong> Structural Geology, v. 23, p. 1825-1844. Sigda, J., <strong>and</strong> Wilson, J., 2003a, Are faults preferential flow paths through semiarid <strong>and</strong> arid vadose zones?: Water Resources Research, v. 39, no. 8, 1225, doi: 10.1029/2002WR001406. Stephen, K. D., <strong>and</strong> Dalrymple, M., 2002, Reservoir simulations developed from an outcrop <strong>of</strong> incised valley fill strata: AAPG Bulletin, v. 86, no. 5, p. 797-822. Sternl<strong>of</strong>, K., <strong>and</strong> Pollard, D., 2001, Deformation b<strong>and</strong>s as linear elastic fractures: Progress in theory <strong>and</strong> observation: EOS Trans. Amer. Geophys. Union, v. 82, no. 47, Fall Meeting Supplemental Abstract T42E-04. -, 2002, Numerical modeling <strong>of</strong> compactive deformation b<strong>and</strong>s as granular anti-cracks: EOS Trans. Amer. Geophys. Union, v. 83, no. 47, Fall Meeting Supplemental Abstract T11F-10. Sternl<strong>of</strong>, K. R., Chapin, J. R., Pollard, D. D., <strong>and</strong> Durl<strong>of</strong>sky, L. J., 2004, Permeability effects <strong>of</strong> deformation b<strong>and</strong> arrays in s<strong>and</strong>stone: American Association <strong>of</strong> Petroleum Geologists Bulletin, v. 88, no. 9, p. 1315-1329. Sternl<strong>of</strong>, K. R., Karimi-Fard, M., Pollard, D. D., <strong>and</strong> Durl<strong>of</strong>sky, L. J., 2006, Flow effects <strong>of</strong> compaction b<strong>and</strong>s in s<strong>and</strong>stone at scales relevant to aquifer <strong>and</strong> reservoir management: Water Resources Research, in press, doi: 10.1029/2005WR004664. Sternl<strong>of</strong>, K. R., Rudnicki, J. W., <strong>and</strong> Pollard, D. D., 2005, Anticrack-inclusion model for compaction b<strong>and</strong>s in s<strong>and</strong>stone: Journal <strong>of</strong> Geophysical Research, v. 110, B11403, doi: 10.1029/2005JB003764. Stewart, J. H., <strong>and</strong> Carlson, J. E., 1978, Geologic Map <strong>of</strong> Nevada: U.S. Geological Survey Map MF-930, 1:500,000 (2 sheets). Sumi, Y., Nemat-Nasser, S., <strong>and</strong> Keer, L. M., 1985, On crack path stability in a finite body: Engineering Fracture Mechanics, v. 22, p. 759-771. Swain, M. V., <strong>and</strong> Hagan, J. T., 1978, Some observations <strong>of</strong> overlapping interacting cracks: Engineering Fracture Mechanics, v. 10, p. 299-304. Swierczewska, A., <strong>and</strong> Tokarski, A. K., 1998, Deformation b<strong>and</strong>s <strong>and</strong> the history <strong>of</strong> folding in the Magura Nappe, western outer Carpathians, Pol<strong>and</strong>: Tectonophysics, v. 297, no. 1-4, p. 73-90. Taylor, W. L., 1999, Fluid flow <strong>and</strong> chemical alteration in fractured s<strong>and</strong>stones [Ph.D. thesis]: <strong>Stanford</strong> University, 411 p. 212
Taylor, W. L., <strong>and</strong> Pollard, D. D., 2000, Estimation <strong>of</strong> in-situ permeability <strong>of</strong> deformation b<strong>and</strong>s in porous s<strong>and</strong>stone, Valley <strong>of</strong> Fire, Nevada: Water Resources Research, v. 36, p. 2595-2606. Taylor, W. L., Pollard, D. D., <strong>and</strong> Aydin, A., 1999, Fluid flow in discrete joint sets-field observations <strong>and</strong> numerical simulations: Journal <strong>of</strong> Geophysical Research, v. 104, p. 28,983-29,006. Tembe, S., Vajdova, V., Wong, T.-f., <strong>and</strong> Zhu, W., 2006, Initiation <strong>and</strong> <strong>propagation</strong> <strong>of</strong> strain localization in circumferentially notched samples <strong>of</strong> two porous s<strong>and</strong>stones: Journal <strong>of</strong> Geophysical Research, v. 111, p. B02409, doi: 10.1029/2005JB003611. Thomas, A. L., <strong>and</strong> Pollard, D. D., 1993, The geometry <strong>of</strong> echelon fractures in rock: implications from laboratory <strong>and</strong> numerical experiments: Journal <strong>of</strong> Structural Geology, v. 15, p. 323-334. Townend, J., <strong>and</strong> Zoback, M. D., 2000, How faulting keeps the crust strong: Geology, v. 28, no. 5, p. 399-402. Underhill, J. R., <strong>and</strong> Woodcock, N. H., 1987, Faulting mechanisms in high-porosity s<strong>and</strong>stones; New Red S<strong>and</strong>stone, Arra, Scotl<strong>and</strong>, in Jones, M. E., <strong>and</strong> Preston, R. M. F., eds., Deformation <strong>of</strong> Sediments <strong>and</strong> Sedimentary Rocks: Geological Society <strong>of</strong> London Special Publications, v. 29, p. 91-105. Vajdova, V., <strong>and</strong> Wong, T.-f., 2003, Incremental <strong>propagation</strong> <strong>of</strong> discrete compaction b<strong>and</strong>s: Acoustic emission <strong>and</strong> micro<strong>structural</strong> observations on circumferentially notched samples <strong>of</strong> Bentheim s<strong>and</strong>stone: Geophysical Research Letters, v. 30, no. 14, 1775, doi: 10.1029/2003GL017750. -, 2004, Permeability evolution during localized deformation in Bentheim s<strong>and</strong>stone: Journal <strong>of</strong> Geophysical Research, v. 109, p. B10406, doi: 10.1029/2003JB002942. Weertman, J., <strong>and</strong> Weertman, J. R., 1964, Elementary Dislocation Theory: New York, Macmillan Company, 213 p. Wen, X.-H., <strong>and</strong> Gomez-Hern<strong>and</strong>ez, J. J., 1996, Upscaling hydraulic conductivities in heterogeneous media: An overview: Journal <strong>of</strong> Hydrology, v. 183, p. 9-32. White, C. D., <strong>and</strong> Barton, M. D., 1999, Translating outcrop data to flow models, with applications to the Ferron s<strong>and</strong>stone: SPE Reservoir Evaluation & Engineering, v. 2, no. 4, p. 341-350. Wilson, J. E., Goodwin, L. B., <strong>and</strong> Lewis, C. J., 2003, Deformation b<strong>and</strong>s in nonwelded ignimbrites: Petrophysical controls on fault-zone deformation <strong>and</strong> evidence <strong>of</strong> preferential fluid flow: Geology, v. 31, no. 10, p. 837-840. Wong, T., Baud, P., <strong>and</strong> Klein, E., 2001, Localized failure modes in compactant porous rock: Geophysical Research Letters, v. 28, p. 2521-2524. 213
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STRUCTURAL GEOLOGY, PROPAGATION MEC
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Abstract Low-porosity, low-permeabi
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delivered with fortitude, humor, su
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Chapter 3—Energy-release model of
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List of Illustrations Figure A. Cov
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Figure A. Cover photo that accompan
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likely present in subsurface sandst
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hooking-tip interactions—using th
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and sandstone, my co-authors—Moha
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the hard data from which accurate p
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Although the Aztec sandstone experi
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Waterpocket Fault 36 o 26‘ N 0 1
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Cenozoic Mesozoic Paleozoic Quatern
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3.3. Deformation The Aztec also has
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There also are relatively high-angl
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(e) (f) (c) 500µm compaction band
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dihedral angle of 80° or more, and
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5. Compaction band orientations Ori
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n = 20 M n = 20 P n = 22 B n = 20 R
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were encountered, giving the dihedr
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Eichhubl et al., 2004) did not lend
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P (a) (c) S P S Figure 1.10. Stereo
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possible, and use these to better c
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1.5(ρgz) (b) WEST Willow Tank Uppe
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9. Acknowledgements My sincere than
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The term compaction band (CB) was c
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Pollard, 2002). The particular util
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Hue-based image analysis using MATL
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a direct genetic relationship (Hill
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Compaction band fin Depositional be
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suggests—that to first approximat
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Porosity Porosity 0.3 0.25 0.2 0.15
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pore-clogging clay—due presumably
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500 µm Figure 2.9. Electron backsc
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(a) (b) σ 3 σ 1 x 3 x 1 x 1 (c) u
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6. Elastic properties Despite a lon
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Comparison of the two approaches es
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term in (6a) and (6c) begins to dom
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MPa MPa 80 70 60 50 40 30 20 10 0 0
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2002) and use a BEM approach (Crouc
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MPa 10 4 10 3 10 2 10 1 10 −5 10
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concentration of quartz plasticity
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conducted on well-cemented sandston
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~ 62 m compaction band trend 500µm
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Sternlof et al. (2005) have suggest
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2005). It consists of a long (infin
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⎡ ∆ ⎤ ⎧ p 1 ∆ ⎛ M ⎞
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which point the inelastic strain ha
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they can exert significant effects
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interact is inversely proportional
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(a) (b) (c) (d) Figure 4.3. Typical
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Viewed individually, CB traces tend
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(a) (b) (c) (d) (e) (f) Figure 4.7.
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1973; Mardon, 1988; Peck et al., 19
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undamaged host rock. That CBs canno
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0.5 0.4 0.3 0.2 0.1 0.5 0.4 0.3 0.2
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Normalized stress magnitude 3 2.5 2
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helps to explain why the oblique ap
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and ts = G·ds + H·dn (2) where tn
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plastic compaction, as suggested by
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To determine the sensitivity of pro
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segments will self-correct to provi
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6.3. Approaching tip interactions A
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0.2 0.15 0.1 0.05 0 −0.05 −0.1
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0.2 0.15 0.1 0.05 0 −0.05 −0.1
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the hooking patterns commonly obser
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(a) (b) (c) σ1 compaction band max
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σ 3 σ 2 σ 1 Figure 4.24. Schemat
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NV UT CA AZ Park Road Map Detail Pa
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compaction band Figure 5.2. Typical
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3. Computational method The methodo
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compaction band A 5 mm A‘ compact
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4. Application to the Aztec sandsto
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Permeability (mD) 10 4 10 3 10 2 10
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B‘ A‘ A c f m c m c f c f c f c
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equivalent of the Aztec sandstone,
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effective permeability represents a
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NV UT CA AZ Park Road Map Detail Pa
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Commonly from ~1 mm to ~1.5 cm in t
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Although systematic arrays of DBs p
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to 2 m, with both sets in a cross-h
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y identical blocks all subject to t
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contiguous areas. This type of char
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(0,b) n 3 (0,0) f 2 n 2 n 1 (a,0) (
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6.1. Parallel Effective permeabilit
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By contrast, band-parallel effectiv
- Page 174 and 175: Relative Effective Permeability 1.0
- Page 176 and 177: (a) (b) (c) 0 meters 3 = 10-2 kb /k
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- Page 182 and 183: 100 meters 5 meters NV UT CA AZ Par
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- Page 188 and 189: (CBs) and the matrix rock in all si
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- Page 202 and 203: 5.2.2. Discussion The elliptical pa
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- Page 210 and 211: Finally, there is the issue of fore
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- Page 214 and 215: Bakke, S., and Øren, P. E., 1997,
- Page 216 and 217: Carpenter, D. G., and Carpenter, J.
- Page 218 and 219: Eichhubl, P., Taylor, W. L., Pollar
- Page 220 and 221: Karimi-Fard, M., Durlofsky, L. J.,
- Page 222 and 223: -, 1987, Fracture from a straight c
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