Christoph Iglseder

Updating the 1/50.000 geological maps of IGME with remote sensing data, marine geology data, GPS measurements and GIS techniques: the case of KEA Island

In this study the combined use of field mapping and measurements, remote sensing data analysis and GIS techniques for the geological mapping of KEA Island at a 1/50.000 scale, is presented. The geological formations, geotectonic units and the tectonic structure were recognized in situ and mapped. Interpretation of high resolution satellite images (Quickbird) and medium resolution satellite images (Landsat 7 ETM and ASTER) has been carried out in order to detect the linear or not structures of the study area. The in situ mapping was enhanced with data from the digital processing of the satellite data. Marine geology data such as bathymetric data and seismic profiles were also taken into account. All the analogical and digital data were imported in a geodata base specially designed for geological data. After the necessary topological control and corrections the data were unified and processed in order to create the final layout at 1/50.000 scale.