Computer modelling and visualisation of the structural deformation caused by movement along geological faults

Egan, Stuart; Kane, Soulèye; Buddin, Tim; Williams, G. D.; Hodgetts, David

doi:10.1016/s0098-3004(98)00125-3

Cited by 45 publications

(27 citation statements)

References 13 publications

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“…3-D models mostly deal with surface unfolding processes (Gratier and Guillier 1993;Rouby 2000). Only a few addresses the problem of volume restoration, using a pseudo 3-D approach with cylindrical domains composed by a succession of cross sections (Wilkerson and Medwedeff (1993;Egan 1998). Recently, a model was developed that proposes both a valid geological path for 3-D deformation and strain location (Cornu et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Backward modeling of the rifting kinematics in the Upper Rhine Graben: insights from an elastic-perfect contact law on the restoration of a multi-bloc domain

Cornu

Bertrand

2005

Int J Earth Sci (Geol Rundsch)

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This paper addresses the problem of volume restoration for 3-D sedimentary basin kinematic deformation. The primary purpose is methodological and concerns the use of contact mechanics with the finite element method, in order to deform a geological multi-bloc domain. This approach is applied to backward model the later stage of rifting of a segment of the southern Upper Rhine Graben (France-Germany border). Preliminary results from our modeling demonstrate the ability of the method not only to handle complex geometries, but also to successfully perform retro-deformation of a complex geological domain. In addition, they provide or confirm crucial information on the rifting evolution and tectonic features of this segment of the Upper Rhine Graben, such as the distribution of deformation, the asymmetry of the graben and a significant left-lateral strike-slip component of displacement.

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Section: Introductionmentioning

confidence: 99%

Backward modeling of the rifting kinematics in the Upper Rhine Graben: insights from an elastic-perfect contact law on the restoration of a multi-bloc domain

Cornu

Bertrand

2005

Int J Earth Sci (Geol Rundsch)

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“…Les résultats présentés avec le modèle montrent sa capacité à traiter l'ensemble des problèmes que peut traiter un modèle semi-3D, dans la mesure où il est limité à l'étude de bassins constitués de sections topologiquement équivalentes, même si l'approche discrète permet de traiter des cas complexes. D'autre part, contrairement à un modèle tel que celui proposé par l'université de Keele [28], qui est direct en cisaillement vertical et inverse à l'aide d'un algorithme de dépliage de type Unfold, le modèle décrit ici est totalement réversible et offre la possibilité de s'intégrer dans un logiciel de modélisation de bassin. La suite des travaux envisagés est la généralisation du modèle pour pouvoir prendre en compte des conditions aux limites plus générales, afin de traiter de déformations complètement tridimensionnelles.…”

Section: Resultsunclassified

Un modèle cinématique discret de déformation 3D d'un bassin sédimentaire

Cornu¹,

Schneider²,

Gratier³

2000

Oil & Gas Science and Technology - Rev. IFP

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Résumé -La déformation des couches géologiques en trois dimensions est une nouvelle étape dans la modélisation de bassin. Les premiers algorithmes de déformation cinématique publiés étaient des modèles « pseudo-3D », qui étaient limités à l'étude de cas construits à partir de sections topologiquement équivalentes. Le modèle cinématique proposé ici poursuit ces travaux et permet d'élargir leur domaine d'application vers un vrai traitement 3D. Pour ce faire, il utilise une approche discrète et introduit deux notions relatives à la conservation de l'aire de la surface neutre d'une couche, et à l'alternance des couches rigides et ductiles. Les résultats obtenus à l'aide du modèle sont cohérents avec ceux obtenus par les modèles pseudo-3D, et mettent en évidence la capacité de l'approche discrète à prendre en compte des géométries complexes. Il reste désormais à étendre ce modèle à des conditions à la limite plus géné-rales que celles qui consistent à imposer un déplacement dans une seule direction donnée.Mots-clés : cinématique 3D, modélisation de bassin, plis par flexion, restauration. Abstract -A Discrete Kinematic Model for 3D Deformation at Sedimentary Basin Scale

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“…Fault movements were modelled mostly by the fault parallel flow algorithm (Kane et al 1997;Egan et al 1999), but occasionally also by trishear (Erslev 1991) and simple shear. Decompaction (Sclater and Christie 1980) parameters were as follows: initial porosity of 0.4 for all horizons; depth coefficient of 0.4 for the basin infill, 0 for the basement units, taken as uncompressible.…”

Section: Section Restorationmentioning

confidence: 99%

Flexural basin reworked by salt-related pull-apart structures: the Adony Basin

Palotai¹,

Csontos²

2012

Central European Geology

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Several main tectonic lineaments originating in the Alps and Dinarides merge in Central Hungary to form the Mid-Hungarian Shear Zone. As these structures are hidden beneath sub-basins of the Neogene Pannonian Basin, it has long been debated whether the tectonic style of the shear zone is mainly contractional or strike-slip. New 3D seismic data allowed a detailed analysis of one of these sub-basins, the Adony Basin, located south of Budapest. Its evolution is linked to the tectonics between the southern Tisza unit of European passive margin affinity, the northern ALCAPA block with Alpine affinity, and sheared remnants of Dinaric units in between. During the Oligocene and Early to Middle Miocene, a flexural basin related to the convergent thrusting of Dinaric-and ALCAPA-derived units was developed. On the southern side, N-NW verging thrust sheets were observed. On the opposite front, Triassic carbonates of ALCAPA were thrust several kilometres above Palaeogene formations to the SW. Dextral transpression is assumed for the Middle Miocene. Local deposition of Middle Miocene salt in the basin formed a detachment surface. Late Miocene sinistral strike-slip faulting resulted in a pull-apart basin above that part of the earlier flexural basin that has not been overthrust. The margins of the basin coincided with the fronts of earlier thrusts. Faults on the basin margins partly detached on the salt, decoupling the supra-salt basin fill from the underlying formations. Within the pull-apart basin, gravity sliding on the steep margins resulted in salt welds, detachment and roll-over folds.

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Computer modelling and visualisation of the structural deformation caused by movement along geological faults

Cited by 45 publications

References 13 publications

Backward modeling of the rifting kinematics in the Upper Rhine Graben: insights from an elastic-perfect contact law on the restoration of a multi-bloc domain

Backward modeling of the rifting kinematics in the Upper Rhine Graben: insights from an elastic-perfect contact law on the restoration of a multi-bloc domain

Un modèle cinématique discret de déformation 3D d'un bassin sédimentaire

Flexural basin reworked by salt-related pull-apart structures: the Adony Basin

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