![]() Moody JD, Hill MJ (1956) Wrench-fault tectonics. Molnar P, Tapponier P (1975) Cenozoic tectonics of Asia: effect of a continental collision. Mandl G (1988) Mechanics of tectonic faulting. Kugler J, Waldron JWF, Durling PW (2019) Fault development in transtension, McCully gas field, New Brunswick, Canada. Harland WB (1971) Tectonic transpression in Caledonian Spitsbergen. Gilliland WN, Meyer GP (1976) Two classes of transform faults. J Geophys Res 77:4432–4460įreund R (1974) Kinematics of transform faults. ![]() In: Dickinson WR (ed) Tectonics and Sedimentation, Society of Economic Paleontologist and Mineralogists Special Publication, vol 22, pp 190–204įitch TJ (1972) Plate convergence, transcurrent faults, and internal deformation adjacent to Southeast Asia and the Western Pacific. J Struct Geol 23:1457–1486Ĭrowell JC (1974) Origin of late Cenozoic basins in southern California. Tectonophysics 309:1–25Ĭarreras J (2001) Zooming on northern cap de Creus shear zones. Bull Geol Soc Am 77:439–441īurg JP (1999) Ductile structures and instabilities: their implication for Variscan tectonics in the Ardennes. Special Publications 37, 386pīurchfiel BC, Stewart JH (1966) “Pull-apart” origin of the central segment of Death Valley, California. Society of Economic Paleontologists and Mineralogists. J Geol Soc India 82:474–484īiddle KT, Christie-Blick N (1985) Strike-slip deformation, basin formation and sedimentation. Tectonics 1:91–105Bīhattacharya AR, Singh SP (2013) Proterozoic crustal scale shearing in the Bundelkhand massif with special reference to quartz reefs. Oliver & Boyd, Edinburgh, 206pĪydin A, Nur A (1982) Evolution of pull-apart basins and their scale independence. This transient process highlights the importance of addressing such solid-fluid coupling in studies aiming at constraining volcanic eruption triggers as well as seismic fault destabilization, and the means and pros of geothermal system development.Anderson EM (1951) The dynamics of faulting and dyke formation with application to Britain, 2nd edn. ![]() We also show how a plasticity criterion as simple as the von Mises criterion already enhances fluid flow, locally. Pressure-driven fluid diffusion returns to stationary state between weeks to months after fault slip. We report a maximum fluid flux reaching 8 to 70 times the initial stationary flux. We investigate the spatial and temporal evolution of this fluid flow when varying fault permeability, shear modulus, fluid viscosity, and rock frictional strength. The appearance of negative and positive fluid pressure in these domains lead to a time-dependent focused fluid flow, which resembles the suction-pump mechanism proposed ca. The development of dilational and contractional domains in the fault' surroundings lead to mean stresses and volumetric strains that range between ☑ MPa and ☑0-4, respectively. ![]() Once this implementation is benchmarked, we assess the development of fluid flow due to a slipping vertical strike-slip left-lateral fault set at 5 km depth. We developed an original poro-elasto-plastic Finite Element Method (FEM) based on the FEniCS library, and in which the poro-elastic and the elasto-plastic constitutive equations are implicitly coupled. Here, we carry a preliminary modelling approach to be considered as a proof of concept, to show how within such a tectonic setting, a strike slip fault influences fluid flow out from a geothermal reservoir. The Planchon-Peteroa geothermal system of the South Andean Volcanic Zone (Chile), illustrates at tectonic crustal scale, how strike-slip faults appear closely involved in the localization of hydrothermal fluid flow. While faults can alter fluid flow in their surroundings, potentially acting as barriers or conduits for fluids, magmatic and hydrothermal fluids can also modify pore pressure and alter faults resistance to slip motion. While fluid-fault interactions in the upper crust have received a wealth of investigations using observational, experimental and modelling approaches, the multi-parametric processes at play are still poorly constrained. Geothermal systems are recognized as key energy resources as well as locations where hydrothermally enhanced chemical reactions can favour mineralizations of economic interest. ![]()
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