Strike-slip faults

Sylvester, Arthur G.

doi:10.1130/0016-7606(1988)100<1666:ssf>2.3.co;2

Cited by 1,314 publications

(620 citation statements)

References 182 publications

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“…On sait que les failles de décrochement (Ingersoll, 1988;Sylvester, 1988) peuvent causer des changements latéraux de faciès, des discontinuités et produire des brèches. On propose donc d'interpréter les deux failles principales 1-a et 1-b (Fig.…”

Section: La Période De Stabilité Anté-santonienne -Du Crétacé Inférieunclassified

Évolution de la plate-forme carbonatée de Kruja, en Albanie, du crétacé à l'éocène /

Heba¹

2008

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Section: La Période De Stabilité Anté-santonienne -Du Crétacé Inférieunclassified

Évolution de la plate-forme carbonatée de Kruja, en Albanie, du crétacé à l'éocène /

Heba¹

2008

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“…Initially (first iteration) these values are given by the coincidence of the nodes of the two sides of the crack face. At each of the following iterations we first assess the status of every node on the fracture faces; contact nodes in condition (25) are moved by a small amount in the proper direction along the contact surface, thus slightly relaxing ~rt. Three possible cases may occur at the next global iteration 7 + 1 (see Fig.…”

Section: It Does Not Occur Ifmentioning

confidence: 99%

“…These experiments show that the en 6chelon arrangement observed in the field precedes strike-slip faulting. Since the displacements at the top and bottom of the clay cake are different, these analog experiments are inherently three-dimensional; however, their mechanical explanation has long been based on the Coulomb-Mohr criterion [25]. This implicitly assumes that near the surface the situation is a simple shear.…”

Section: Shearing Casementioning

confidence: 99%

Fracture under compression: the direction of initiation

Wei

Bremaecker

1993

Int J Fract

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The preferential orientation for the initiation of a crack is the one which gives the maximum strain energy reduction for a given crack length. This proposed criterion is a logical extension of the maximum energy release rate criterion. It makes no assumptions on the configuration, the homogeneity, the stress condition on the crack faces, or the material response, consequently it is applicable to the usual engineering cases as well as to cases under compression and/or high confining pressures such as obtain inside the Earth. Numerical results for brittle materials (rocks) agree with laboratory and field data, and show that the criterion is an improvement over the empirical and approximate Coulomb-Mohr criterion which has been used for compressive fracture problems for more than 200 years. They also show that our method can be used in cases where it is not a priori evident whether the fracture will remain closed or will open.The mathematical formulation of the criterion is approached by way of constrained optimization, and the solution is proven to exist uniquely. The numerical implementation is based on a finite element scheme. An iterative method is employed to handle the material and geometric non-linearities. NomenclatureA = stiffness matrix S 0, = minimum strain energy B = active set s = strain energy density B = boundary of the body 7" = prescribed traction on Bt Bc = contact fracture faces T = superscript for transpose Bd = detached fracture faces 0 = prescribed displacement on B. B: = fracture faces ff = displacement vector Bt = traction boundary V = domain of a body B. = displacement boundary ~? = position vector D = constitutive matrix x, y = spatial coordinates E = Young's modulus ~, 2 = indices /~ = body force bS = normalized strain energy reduction H = displacement solution space e = strain tensor i, j, k = indices 0 = crack orientation g = kinematically admissible set Os = preferential crack orientation m = total number of nodes # = Lagrange multiplier N~ = base function p~ = internal friction coefficient n = number of nodes in active set /~s = sliding friction coefficient P = potential energy v = Poisson's ratio p = number of nodes for prescribed displacement a = stress tensor q = m -p a. = normal stress R = real line cr t = tangential stress S = strain energy

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“…Furthermore, different types of tectonic structures develop distinctive morphotectonic features; extensional faults produce footwall ranges, associated alluvial fans, and tilting of hanging-walls, whereas strike-slip faults are normally linked to both uplifted and sunken landscape associated with releasing and restraining bends respectively (e.g. Aydin and Nur, 1985;Booth-Rea et al, 2004a;Densmore et al, 1998;Keller and Pinter, 2002;Osmundsen et al, 2010;Stein et al, 1988;Sylvester, 1988;Walker and Jackson, 2002). Longitudinal valleys and benches are other common morphotectonic features that occur parallel to strike-slip fault segments (Keller and Pinter, 2002;Legg et al, 1989).…”

Section: Introductionmentioning

confidence: 98%

“…In tectonic transcurrent settings, shortening and extensional structures can occur together with strike-slip faults producing complex landscapes (e.g. Booth-Rea et al, 2004a;Montenat et al, 1990;Sylvester, 1988).…”

Section: Introductionmentioning

confidence: 98%