Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Three-dimensional distinct element method modelling of the growth of normal faults in layered sequences

Martin P. J. Schoepfer, Conrad Childs, Tom Manzocchi and John J. Walsh
Three-dimensional distinct element method modelling of the growth of normal faults in layered sequences (in The geometry and growth of normal faults, Conrad Childs (editor), R. E. Holdsworth (editor), C. A. L. Jackson (editor), Tom Manzocchi (editor), John J. Walsh (editor) and G. Yielding (editor))
Special Publication - Geological Society of London (September 2016) 439 (1): 307-332

Abstract

The growth of normal faults in mechanically layered sequences is numerically modelled using three-dimensional Distinct Element Method (DEM) models, in which rock comprises an assemblage of bonded spherical particles. Faulting is induced by movement on a pre-defined normal fault at the model base whilst a constant confining pressure is maintained by applying forces to particles lying at the model top. The structure of the modelled fault zones and its dependency on confining pressure, sequence (net:gross) and fault obliquity are assessed using various new techniques that allow (a) visualization of faulted horizons, (b) quantification of throw partitioning and (c) determination of the fault zone throw beyond which theoretical juxtaposition sealing occurs along the entire zone length. The results indicate that fault zones become better localized with increasing throw and confinement. The mechanical stratigraphy has a profound impact on fault zone structure and localization: both low and high net:gross sequences lead to wide and relatively poorly localized faults. Fault strands developing above oblique-slip normal faults form, on average, normal to the greatest infinitesimal stretching direction in transtensional zones. The model results are consistent with field observations and results from physical experiments.


ISSN: 0305-8719
EISSN: 2041-4927
Coden: GSLSBW
Serial Title: Special Publication - Geological Society of London
Serial Volume: 439
Serial Issue: 1
Title: Three-dimensional distinct element method modelling of the growth of normal faults in layered sequences
Title: The geometry and growth of normal faults
Author(s): Schoepfer, Martin P. J.Childs, ConradManzocchi, TomWalsh, John J.
Author(s): Childs, Conradeditor
Author(s): Holdsworth, R. E.editor
Author(s): Jackson, C. A. L.editor
Author(s): Manzocchi, Tomeditor
Author(s): Walsh, John J.editor
Author(s): Yielding, G.editor
Affiliation: University of Vienna, Department for Geodynamics and Sedimentology, Vienna, Austria
Pages: 307-332
Published: 20160915
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 52
Accession Number: 2017-004721
Categories: Structural geology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendices
Illustration Description: illus. incl. 2 tables, sects.
Secondary Affiliation: University College Dublin, IRL, Ireland
Source Note: Online First
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201704
Close Modal

or Create an Account

Close Modal
Close Modal