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Loop Structural#

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Loop structural is an open source 3D modelling library providing access to multiple interpolation schemes with a high level and easy to use API for creating geological models. The library has been written for the Loop platform by Lachlan Grose at Monash University.

Loop is an open source 3D probabilistic geological and geophysical modelling platform, initiated by Geoscience Australia and the OneGeology consortium. The project is funded by Australian territory, State and Federal Geological Surveys, the Australian Research Council and the MinEx Collaborative Research Centre.

LoopStructural is the forward geological modelling engine for the loop and contains the classes and functions to manage the various elements in a 3D geological model. Including stratigraphy, unconformities, fault and folds. LoopStructural contains three native interpolation algorithms:

  1. Piecewise-linear interpolation [1]

  2. Discrete Fold Interpolator [2, 3, 6]

  3. Finite Difference Interpolation [5]

and a wrapper for the generalised radial basis functions provided by Surfe [4].

[1]

Tobias Frank, Anne-Laure Laure Tertois, and Jean-Laurent Laurent Mallet. 3d-reconstruction of complex geological interfaces from irregularly distributed and noisy point data. Computers & Geosciences, 33:932–943, 7 2007. URL: http://linkinghub.elsevier.com/retrieve/pii/S0098300407000581, doi:10.1016/j.cageo.2006.11.014.

[2]

L. Grose, G. Laurent, L. Aillères, R. Armit, M. Jessell, and T. Cousin-Dechenaud. Inversion of structural geology data for fold geometry. Journal of Geophysical Research: Solid Earth, 123:6318–6333, 2018. URL: http://doi.wiley.com/10.1029/2017JB015177, doi:10.1029/2017JB015177.

[3]

Lachlan Grose, Laurent Ailleres, Gautier Laurent, Robin Armit, and Mark Jessell. Inversion of geological knowledge for fold geometry. Journal of Structural Geology, 119:1–14, 2019. URL: https://doi.org/10.1016/j.jsg.2018.11.010, doi:10.1016/j.jsg.2018.11.010.

[4]

Michael J. Hillier, Ernst M. Schetselaar, Eric A. de Kemp, and Gervais Perron. Three-dimensional modelling of geological surfaces using generalized interpolation with radial basis functions. Mathematical Geosciences, 46:931–953, 11 2014. URL: http://link.springer.com/10.1007/s11004-014-9540-3, doi:10.1007/s11004-014-9540-3.

[5]

Modeste Irakarama, Gautier Laurent, Julien Renaudeau, and Guillaume Caumon. Finite difference implicit structural modeling of geological structures. Mathematical Geosciences, 2020. URL: https://doi.org/10.1007/s11004-020-09887-w, doi:10.1007/s11004-020-09887-w.

[6]

Gautier Laurent, Laurent Ailleres, Lachlan Grose, Guillaume Caumon, Mark Jessell, and Robin Armit. Implicit modeling of folds and overprinting deformation. Earth and Planetary Science Letters, 456:26–38, 2016. URL: http://linkinghub.elsevier.com/retrieve/pii/S0012821X16305209, doi:10.1016/j.epsl.2016.09.040.

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