Abstract
To reveal, to render and to handle complex geological objects and their history of structural development, appropriate geometric models have to be designed. Geological maps, sections, sketches of strain and stress patterns are such well-known analogous two-dimensional models. Normally, the set of observations and measurements supporting them is small in relation to the complexity of the real objects they derive from. Therefore, modelling needs guidance by additional expert knowledge to bridge empty spaces which are not supported by data. Generating digital models of geological objects has some substantial advantages compared to conventional methods, especially if they are supported by an efficient database management system. Consistent 3D models of some complexity can be created, and experiments with time-dependent geological geometries may help to restore coherent sequences of paleogeological states. In order to cope with the problems arising from the combined usage of 3D-geometry models of different scale and resolution within an information system on subsurface geology, geometrical objects need to be annotated with information on the context, within which the geometry model has been established and within which it is valid, and methods supporting storage and retrieval as well as manipulation of geometry at different scales must also take into account and handle such context information to achieve meaningful results. An example is given of a detailed structural study of an open pit lignite mine in the Lower Rhine Basin.
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Siehl, A., Thomsen, A. (2003). Scale Problems in Geometric-Kinematic Modelling of Geological Objects. In: Neugebauer, H.J., Simmer, C. (eds) Dynamics of Multiscale Earth Systems. Lecture Notes in Earth Sciences, vol 97. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45256-7_17
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DOI: https://doi.org/10.1007/3-540-45256-7_17
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