Zur physikalischen Tektonik Bruchbildung bei verschiedenen affinen Deformationen im Experiment

Hoeppener, Rolf; Kalthoff, E.; Schrader, P. G.

doi:10.1007/bf01824950

Cited by 51 publications

(14 citation statements)

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“…The experiments of An and Sammis (1996) were based on gravity sliding of a clay slab on a tilting board. In such experiments, the materials used to model the sedimentary cover are mainly clays (Cloos 1955;Hoeppener et al 1969;An and Sammis 1996). The pull-apart structures observed by Cloos (1955) and Hoeppener et al (1969) mainly originated along primary shear fractures, while those developed in the experiments of An and Sammis (1996) were bound by primary (s 1 or s 1 ') and secondary shear fractures or tension joints (s 2 and T; Fig.…”

Section: Previous Analogue Experiments On Pull-apart Basin Formationmentioning

confidence: 99%

“…2). This can be simulated using a rubber or foam plastic sheet, or with sophisticated designs using multiple Plexiglas bars (Schreurs and Coletta 1998;Schreurs 2003) or multiple block units moving relative to each other in simple shear (Hoeppener et al 1969). The experiments of An and Sammis (1996) were based on gravity sliding of a clay slab on a tilting board.…”

Section: Previous Analogue Experiments On Pull-apart Basin Formationmentioning

confidence: 99%

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Initiation and development of pull-apart basins with Riedel shear mechanism: insights from scaled clay experiments

Atmaoui

Kukowski

Stöckhert

et al. 2005

Int J Earth Sci (Geol Rundsch)

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Typical pull-apart structures were created in scaled clay experiments with a pure strike-slip geometry (Riedel type experiments). A clay slab represents the sedimentary cover above a strike-slip fault in the rigid basement. At an early stage of the development of the deformation zone, synthetic shear fractures (Riedel shears) within the clay slab display dilatational behaviour. With increasing basal displacement the Riedel shears rotate and open further, developing into long, narrow and deep troughs. The shear displacement and the low angle with the prescribed principal basal fault set them apart from tension gashes. At a more evolved stage, synthetic segments (Y-shears) parallel to the basal principal fault develop and accommodate progressive strike-slip deformation. The Y-shears connect the tips of adjacent troughs developed from the earlier Riedel shears, resulting in the typical rhomb-shaped structures characteristic for pull-apart basins. The Strait of Sicily rift zone, with major strike-slip systems being active from the Miocene to the Present, comprises pull-apart basins at different length scales, for which the structural record suggests development by a mechanism similar to that observed in our experiments.

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Section: Previous Analogue Experiments On Pull-apart Basin Formationmentioning

confidence: 99%

Section: Previous Analogue Experiments On Pull-apart Basin Formationmentioning

confidence: 99%

Initiation and development of pull-apart basins with Riedel shear mechanism: insights from scaled clay experiments

Atmaoui

Kukowski

Stöckhert

et al. 2005

Int J Earth Sci (Geol Rundsch)

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“…: Cloos (1928) y Riedel (1929) se han dedicado. muchos estudios experimentales a las fallas d~desga-rre (p. eJ -Oertel, 1965;Hoppener et al, 1969;Tchalenko, 1~70;WIlcox et al, 19.73;Emmons, 1979;Naylor et al, 1986;Richard et al, 1989.;Rlch~rd et al, 199.1;Basile, 1990;Gapais et al, 19?1). EstudIOS recientes han utilIzado arena y silicona como analogos de las capas frágiles y dúctiles de la corteza, -A~B magma.…”

Section: Condiciones Experimentales~unclassified

Untitled

Berdiel¹,

Gapais

Brun

1997

Estud. geol.

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El emplazamiento de granitoides en zonas de desgarre de la corteza superior se ha modelizado inyectando un fluido newtoniano en un paquete de arena en el cual se intercala una capa dúctil de silicona que actúa como un nivel de despegue potencial en el cual el material inyectado puede expandirse. El régimen de desgarre se obtiene utilizando una placa basal rígida y móvil que desliza horizontalmente. Se ha analizado la influencia de diferentes perfiles reológicos de la corteza superior en la forma de la intrusión. Los experimentos muestran que: 1) las intrusiones son alargadas y su eje mayor toma la dirección principal de elongación asociada al régimen de desgarre, 2) las intrusiones presentan forma asimétrica en planta, con el desarrollo de una cola en el sentido de cizalla, 3) el régimen de desgarre permite localmente la subida del fluido inyectado a lo largo de las fallas formadas en la cobertera, 4) cuando el perfil reológico de la corteza es igual a ambos lados de la zona de cizalla, las intrusiones presentan forma de gota asimétrica, 5) cuando la viscosidad de los materiales que están por encima del canal de alimentación es superior a la de los materiales del otro lado del accidente principal, no aparece la forma en gota asimétrica.Elleucogranito de Lizio en la zona de cizalla surarmoricana (Sur de Bretaña, Francia) es un ejemplo de que la modelización analógica puede dar las claves para explicar la geometría de muchos granitos sintectónicos emplazados en zonas de desgarre.Palabras clave: Intrusión, lacolitos, desgarre, modelización analógica, granitoide, cadena hercí-nica. ABSTRACTGranite intrusion in the upper crust along a crustal-scale shear zone has been modelled by injecting a Newtonian fluid (low-viscosity silicone putty) into a sandpack containing a ductile layer of silicone putty which acted as a potential décollement level along which the injected material could spread. The strike-slip regime was obtained using a mobile rigid basal plate sliding horizontally. Boundary conditions were chosen in order to analyse the influence of different rheologic profiles of the upper crust on the pattem of the intrusion. Experiments showed that: 1) intrusions are elongate and their long axis tends to track the principal stretching direction associated with the strike-slip regime, 2) intrusions are asymmetric shaped in horizontal view, with the development of a sheared tail trailing behind the intrusion, 3) the strike slip environment allowed local rising of the injected fluid along faults formed in the overburden, 4) when the crustal rheologic profile is similar in both sides of the shear zone, intrusions are asymmetric drop shaped, 5) when the viscosity of materials aboye the feeding pipe is higher that viscosity of materials of the other side of the shear zone, the asymmetric drop shape not appears.Lizio leucogranite of the South Armorican Shear Zone (South Brittany, France) emphasize that our experiments can explain the geometry of many syntectonic' granites emplaced along strike-slip zones. They further shed s...

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“…A tectonophysical explanation for the observed strike-slip faults on the Paleozoic surface is given by their striking similarity to the model of a "clean"* strike-slip process as described by Hoeppener et al (1969). Figure 9 is an illustration, borrowed from Hoeppener's work, and shows the position of shear fractures in a homogeneous medium exposed to a one-sided horizontal compression.…”

Section: Ssfs Development Geographymentioning

confidence: 99%

“…Physical modeling of a "pure" strike-slip fault (Hoeppener et al 1969). As a result of horizontal compression along the surface shown with arrows, the model was deformed (circles drawn on the surface turned to ellipses) along with formation of a system of diagonal shear fractures at an acute angle of 80º along the direction of compression axis.…”

Section: Strike-slip Deformations In the West Siberian Basin And Theimentioning

confidence: 99%

Strike-slip deformations in the West Siberian Basin and their impact on exploration and development of oil and gas reservoirs

Gogonenkov¹,

Timurziev²

2009

Central European Geology

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Extensive 3D seismic exploration has revealed in much of the West Siberian petroliferous basin area a special type of faults and deformations within the sedimentary cover, caused by low-separation basement strike-slip faults. A geologic phenomenon associated with strike-slip fault structures is something new to the understanding of the subsurface structure of West Siberia. Complex morphology, intense disjunctive faulting, block arrangement and enormously wide stratigraphic range of oil and gas presence are characteristic of numerous hydrocarbon fields within the zones of strike-slip fault structures. It would certainly be a risky endeavor to design field development-andproduction projects, drill production wells and conduct geotechnical surveys without confident geomechanical and kinematic models for structure-forming, fluid-conductive and sealing dislocations caused by strike-slip faults in the basement. IntroductionThe West Siberian sedimentary basin is one of the world's largest oil and gasbearing basins with hydrocarbon fields unique in size and volume. Recent decades have seen hundreds of thousands of seismic line-kilometers shot, about 200,000 wells drilled, hundreds of oil and gas fields discovered, and several billion tons of oil and several trillion cubic meters of gas produced. The principal producing zone, the 2,000 to 4,000 m-thick Jurassic and Cretaceous clastic sequence overlain by the Tertiary and Quaternary overburden, is already well studied. However, 3D seismic surveys, subsequent quality processing and detailed interpretation of the acquired data have allowed discovery of essentially Addresses: G. N. Gogonenkov, A. I. Timurziev: 38/3 Narodnogo

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Zur physikalischen Tektonik Bruchbildung bei verschiedenen affinen Deformationen im Experiment

Cited by 51 publications

References 3 publications

Initiation and development of pull-apart basins with Riedel shear mechanism: insights from scaled clay experiments

Initiation and development of pull-apart basins with Riedel shear mechanism: insights from scaled clay experiments

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Strike-slip deformations in the West Siberian Basin and their impact on exploration and development of oil and gas reservoirs

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