cdem; a macOS program for discrete element modeling of tectonic structures

cdem is a macOS document-based application for two-dimensional discrete element modeling of tectonic structures and their associated deformation. Documents encapsulate simulations that can be run and explored simultaneously. A document contains three main views: (1) Set-up view, to define the assemb...

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Bibliographic Details
Published in:Geosphere (Boulder, Colo.) Colo.), 2023-10, Vol.19 (5), p.1259-1279
Main Authors: Cardozo, Nestor, Hardy, Stuart
Format: Article
Language:English
Subjects:
anisotropy
cdem
computer programs
data processing
deformation
digital elevation models
discrete element analysis
displacements
erosion
faults
macOS
plate boundaries
plate tectonics
strain
stress
structural analysis
Structural geology
syntectonic processes
two-dimensional models
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Description
Summary:cdem is a macOS document-based application for two-dimensional discrete element modeling of tectonic structures and their associated deformation. Documents encapsulate simulations that can be run and explored simultaneously. A document contains three main views: (1) Set-up view, to define the assembly size, element properties, anisotropy, boundary conditions (type of faulting), overburden stress, erosion, and syn-tectonic sedimentation; (2) Summary view, which displays the details of the model after initialization; and (3) Results view, which displays the geometry of the model while it is running or after the run and allows exploring the model's evolution in terms of geometry, displacement, strain, or stress. We illustrate the use of the program for assembly calibration and the modeling of contractional and extensional structures without and with syn-tectonic sedimentation. In all these cases, cdem produces realistic incremental and finite deformation. cdem is less powerful than its precursor cdem2D, but it can import and visualize cdem2D results, making the combined use of these two programs a robust suite for mechanically modeling tectonic structures.
ISSN:1553-040X
1553-040X
DOI:10.1130/GES02647.1