Solution-transfer, an Important Geological Deformation Mechanism

Durney, D. W.

doi:10.1038/235315a0

Cited by 273 publications

(87 citation statements)

References 7 publications

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“…Sorby 1853;Durney 1972). This is commonly known as 'pressure solution' but as that technically only refers to dissolution under non-hydrostatic stress (Durney 1972), this phenomenon is here termed dissolution-precipitation creep.…”

Section: Grain-size-sensitive Creepmentioning

confidence: 99%

Geology of the earthquake source: an introduction

Fagereng

Toy

2011

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Earthquakes arise from frictional 'stick-slip' instabilities as elastic strain is released by shear failure, almost always on a pre-existing fault. How the faulted rock responds to applied shear stress depends on its composition, environmental conditions (such as temperature and pressure), fluid presence and strain rate. These geological and physical variables determine the shear strength and frictional stability of a fault, and the dominant mineral deformation mechanism. To differing degrees, these effects ultimately control the partitioning between seismic and aseismic deformation, and are recorded by fault-rock textures. The scale-invariance of earthquake slip allows for extrapolation of geological and geophysical observations of earthquake-related deformation. Here we emphasize that the seismological character of a fault is highly dependent on fault geology, and that the high frequency of earthquakes observed by geophysical monitoring demands consideration of seismic slip as a major mechanism of finite fault displacement in the geological record.

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Section: Grain-size-sensitive Creepmentioning

confidence: 99%

Geology of the earthquake source: an introduction

Fagereng

Toy

2011

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“…It is a major mechanism in the pressure solution processes, which have been welldocumented in describing sedimentary and fault rock deformation (Durney, 1972;Rutter, 1983;Tada and Siever, 1989;Yasuhara et al, 2005), porosity-permeability evolution (Bjørkum and Nadeau, 1998;Ehrenberg et al, 2006), and development of stylolites in carbonate reservoir (Renard et al, 2004;Laronne Ben-Itzhak et al, 2012). One of the important implications of these processes is the formation of different pressure regimes in North Sea central graben, which impacts fluid pressure release and build-up (Swarbrick and Osborne, 1998).…”

Section: Introductionmentioning

confidence: 99%

Mechanical and physical behavior of high-porosity chalks exposed to chemical perturbation

Megawati

Madland

Hiorth

2015

Journal of Petroleum Science and Engineering

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Extensive study on the effect of dissolution-precipitation on mechanical behavior of various high-porosity outcrop chalks (Liége, Aalborg, Kansas, Stevns Klint, and Mons) flooded with simplified aqueous chemistry at 130 °C under isotropic stress beyond the yield is performed.Chemical effects induced by injection of 0.219 M MgCl2 solutions into impure chalks (Liége, Aalborg, Kansas) lead to an immediate enhancement on the macroscopic creep with more than a factor of 2 larger than that of exposed to 0.657 M NaCl solutions. In pure chalks The chemical effects are also demonstrated by marked reduction in the permeability. The porosity-permeability relationship measured at the end of creep test is shifted down from the initial correlation, indicating a dramatic increase in the chalk specific surface area.

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“…[2] Intergranular pressure solution (IPS) has long been recognized as an important mechanism of compaction and deformation under upper crustal and midcrustal conditions [Weyl, 1959;Durney, 1972]. Compaction by IPS is achieved by stress-driven dissolution of material from grain contacts that comprise the load-bearing framework of the aggregate.…”

Section: Introductionmentioning

confidence: 99%

Compaction creep of wet granular calcite by pressure solution at 28°C to 150°C

2010

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[1] Uniaxial compaction experiments have been carried out on wet calcite powders prepared from milled limestone, analytical grade calcite, and superpure calcite. The tests were performed at 28°C-150°C, effective stresses of 20-47 MPa, and a pore pressure of 20 MPa, using presaturated CaCO 3 solution as the pore fluid. Sample grain sizes ranged from 12 to 86 mm. The aim was to determine if creep occurs by intergranular pressure solution (IPS) under these conditions and to identify the rate-controlling process. The wet samples showed significant creep, while dry and oil-flooded samples did not. Wet samples were also characterized by microstructures such as sutured grain contacts, grain indentations, and overgrowths, suggesting the operation of IPS. The behavior of the wet samples at low strains (<4-5%) agreed well with the predictions of standard models for diffusion-controlled pressure solution. However, at higher strains (5-10%), creep slowed down compared with the model predictions. Transient flow-through tests performed in this regime led to an acceleration of creep, consistent with models for precipitation-controlled IPS, and demonstrated an increase in the impurity content of the pore fluid toward higher strains. Since some of these impurities (notably Mg 2+ ) retard precipitation in calcite, we suggest that creep occurred by diffusion-controlled IPS at low strain, giving way to precipitation control at larger strains as impurities accumulated. Fitting of the diffusion-controlled IPS model to the low strain data yielded values of the grain boundary diffusion product DS in calcite of ∼10 −19 m 3 s −1 at 150°C.

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Solution-transfer, an Important Geological Deformation Mechanism

Cited by 273 publications

References 7 publications

Geology of the earthquake source: an introduction

Geology of the earthquake source: an introduction

Mechanical and physical behavior of high-porosity chalks exposed to chemical perturbation

Compaction creep of wet granular calcite by pressure solution at 28°C to 150°C

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