Critical state finite element models of contractional fault-related folding: Part 2. Mechanical analysis

Albertz, Markus; Sanz, Pablo

doi:10.1016/j.tecto.2012.06.016

Cited by 36 publications

(33 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This occurrence has been observed also in studies based on mechanical models that have analyzed the role of weak layers or mechanically heterogeneous stratigraphy (e.g. Hardy and Finch, 2007;Albertz and Lingrey, 2012;Albertz and Sanz, 2012;Hughes and Shaw, 2015). This suggest that both thin frictional discontinuities and thin weak layers impact on the relationships between faults and folds.…”

Section: Folding Evolutionsupporting

confidence: 52%

“…4 and 7). Hence, the trishear method can be successfully applied to cases displaying a limited variability of the mechanical properties of the rocks hosting the propagating faults, as already suggested by previous studies (Cardozo et al, 2003;Hardy and Finch, 2007;Albertz and Sanz, 2012;Hughes and Shaw, 2015). In the non-isotropic experiments the reactivation of precuts has a deep impact on the displacement pattern (Figs.…”

Section: Implications For Kinematic Modelsmentioning

confidence: 59%

“…It is generally accepted that faultrelated folding can be described by three end-member geometries: detachment folds, fault-bend folds, and fault-propagation folds (e.g. De Sitter, 1956;Dahlstrom, 1969;Suppe, 1983;Suppe andMedwedeff, 1984, 1990;Jamison, 1987;Chester and Chester, 1990;Mitra, 1990Mitra, , 1992Mitra, , 2003Erslev, 1991;Fisher et al, 1992;Epard and Groshong, 1995;Poblet and McClay, 1996;Storti and Salvini, 1996;Hardy and Ford, 1997;Allmendinger, 1998;Suppe et al, 2004;Hardy and Finch, 2007;Albertz and Lingrey, 2012). Such three end-members, however, often represent different stages in the evolution of the same structure (e.g., Storti et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

“…Roering et al, 1997), finite element methods (FEM; e.g. Albertz and Lingrey, 2012), and discrete element methods (DEM; Hughes and Shaw, 2015).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

How do horizontal, frictional discontinuities affect reverse fault-propagation folding?

Bonanno

Bonini

Basili

et al. 2017

Journal of Structural Geology

View full text Add to dashboard Cite

Section: Folding Evolutionsupporting

confidence: 52%

Section: Implications For Kinematic Modelsmentioning

confidence: 59%

Section: Introductionmentioning

confidence: 99%

“…Roering et al, 1997), finite element methods (FEM; e.g. Albertz and Lingrey, 2012), and discrete element methods (DEM; Hughes and Shaw, 2015).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

How do horizontal, frictional discontinuities affect reverse fault-propagation folding?

Bonanno

Bonini

Basili

et al. 2017

Journal of Structural Geology

View full text Add to dashboard Cite

“…Geomechanical modelling can be employed in conjunction with advanced constitutive models to simulate sediment rheology which are capable of accounting for the full 3D stress tensor and its impact on compaction (Albertz and Lingrey, 2012;Albertz and Sanz, 2012;Luo et al, 2012;Smart et al, 2012) and overpressure generation Thornton and Crook, 2014).…”

Section: Introductionmentioning

confidence: 99%

Assessing the implications of tectonic compaction on pore pressure using a coupled geomechanical approach

Obradors-Prats

Rouainia

Aplin

et al. 2017

Marine and Petroleum Geology

View full text Add to dashboard Cite

Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbstractOverpressure prediction in tectonic environments is a challenging topic. The available pore pressure prediction methods are designed to work in environments where compaction is mostly one dimensional and driven by the vertical effective stress applied by the overburden. Furthermore, the impact of tectonic deformation on stresses, porosity and overpressure is still poorly understood. We use a novel methodology to capture the true compaction phenomena occurring in an evolving 3D stress regime by integrating a fully-coupled geomechanical approach with a critical state constitutive model. To this end, numerical models consisting of 2D plane strain clay columns are developed to account for compaction and overpressure generation during sedimentation and tectonic activity. We demonstrate that a high deviatoric stress is generated in compressional tectonic basins, resulting in a substantial decrease in porosity with continuing overpressure increase.The overpressure predictions from our numerical models are then compared to those estimated by the equivalent depth method (EDM) in order to quantify the error induced when using classical approaches, based on vertical effective stress, in tectonic environments. The stress paths presented here reveal that a deviation from the uniaxial burial trend can substantially reduce the accuracy of the EDM overpressure predictions.

show abstract

Deformation, stress, and pore pressure in an evolving suprasalt basin

et al. 2017

View full text Add to dashboard Cite

We develop a two‐dimensional plane strain large‐deformation coupled poroelastoplastic finite element model to simulate initiation and rise of a salt wall from a flat salt body during sedimentation. We run transient analyses with high‐permeability and low‐permeability sediments in the model to simulate drained conditions and overpressure (or pore fluid overpressure). We investigate deformation, stress, and overpressure in the evolving suprasalt basin. Model results show that horizontal stress increases even higher than vertical stress at the flank of the salt wall and in the minibasin due to horizontal pushing out of the rising salt wall and that orientations of principal stresses rotate in the minibasin relative to far‐field stress state. Model predicts that compared with far‐field overpressure, the overpressure near the salt wall and within the minibasin is largely perturbed by the salt body. We find that perturbations of pore pressure (or pore fluid pressure) near the salt wall and within the minibasin cannot be resolved by traditional pore pressure prediction methods such as normal compaction trend approach and mean stress model approach. In order to predict pore pressure more accurately, especially in the regions near salt bodies or where stresses are perturbed, we need to apply a method that includes both effects of mean effective stress and deviatoric stress on pore pressure and compaction, for example, the Modified Cam Clay model approach, to pore pressure prediction. Our results provide geoscientists insights into evolution of salt basins, near‐salt deformation, stress, overpressure, and overpressure prediction methods and have implications for near‐salt wellbore drilling programs.

show abstract

Critical state finite element models of contractional fault-related folding: Part 2. Mechanical analysis

Cited by 36 publications

References 69 publications

How do horizontal, frictional discontinuities affect reverse fault-propagation folding?

How do horizontal, frictional discontinuities affect reverse fault-propagation folding?

Assessing the implications of tectonic compaction on pore pressure using a coupled geomechanical approach

Deformation, stress, and pore pressure in an evolving suprasalt basin

Contact Info

Product

Resources

About