3D Reconstruction of Geological Structures Based on Remote Sensing Data: Example from Anaran Anticline, Lurestan, Iran

We present a methodological workflow for the 3D reconstruction of geological surfaces from remote sensing data and regionalscale maps. The methodology has been oriented and applied to the Anaran anticline in the Zagros Fold and Thrust belt Mountain Front. A consistent 3D environment has been generated by the combined processing of Aster and Spot images with a high resolution DEM. The spectral resolution of the Aster images has been improved by the Optimum Index Factor technique while the pansharpening process with the SPOT panchromatic images allowed the improving of the spatial resolution. By means of the 3D digital mapping the structural data have been acquired through analysis of mapped geological traces. Structural analysis of dipdata has allowed us to divide the structure in various cylindrical domains. Structural data has been projected along the structure using measured plunge lines orientation, covering areas with no information. Once achieved a satisfactory dataset, the dipdomain methodology has been applied in order to obtain the frame of the model. Manual editing allowed constrains the obtained surfaces to the mapped geological limits and to the modeled faults. With the implementation of the DSI algorithm, the Asmari and Ilam Fms top surfaces have been reconstructed along Anaran.