3D chronostratigraphic coordinate system based on geomechanical restoration

G. Laurent, Guillaume Caumon, M. Jessell, Julia F Royer

Research output: Chapter in Book/Report/Conference proceedingConference PaperOtherpeer-review

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Geological structures are generally deformed, making the present-day Euclidean distance inappropriate for applying geostatistics. Considering this, chronostratigraphic coordinate system maps geological models into a regular chronostratigraphic space, where deformations (especially those due to both faults and folds) have been removed (Mallet, 2004). Three curvilinear coordinates are used for this mapping, among which a time coordinate, inspired from H. E. Wheeler's work (1958), and two paleogeographic coordinates corresponding to the location of each particle at deposition time. To-date, chronostratigraphic coordinate system has been implemented by Moyen and Mallet (2004), Jayr et al. (2008), as a global optimization method which computes the three coordinates from chronostratigraphic interpretations. In this work, we propose instead to use sequential geomechanical restoration to compute paleogeographic coordinates. Geomechanical restoration is a way to infer the original position of a horizon taking rock physics into account. Each layer is restored into depositional state, which provides the paleogeographic coordinates of its hanging wall. Doing so, it is possible to capitalize on restoration efforts to build a chronostratigraphic coordinate system, accounting for rock rheology and for the deformation path inferred from the sedimentary record.

Original languageEnglish
Title of host publicationProceedings of the 73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011
Subtitle of host publicationUnconventional Resources and the Role of Technology
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Number of pages5
ISBN (Print)9781617829666
Publication statusPublished - 2011
EventEuropean Association of Geoscientists & Engineers Conference & Exhibition 2011: Unconventional Resources and the Role of Technology - Reed Messe Wien, Vienna, Austria
Duration: 23 May 201126 May 2011
Conference number: 73rd


ConferenceEuropean Association of Geoscientists & Engineers Conference & Exhibition 2011
Abbreviated titleSPE EUROPEC 2011
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