1. Istituto Nazionale di Geofisica e Vulcanologia Sezione di Palermo Italy
2. The Commonwealth Scientific and Industrial Research Organization Energy Perth Western Australia Australia
3. Geological Engineering DepartmentAnkara University Ankara Turkey
4. Geological Engineering DepartmentMiddle East Technical University Ankara Turkey
5. Geological Engineering DepartmentHacettepe University Ankara Turkey
6. Radiogenic Isotope Facility, School of Earth SciencesThe University of Queensland Brisbane Queensland Australia