Al-Balqa' Applied University, Faculty of Engineering, Surveying and Geomatics Dept., Salt, 19117 Jordan ; Department of Applied Geology, Karlsruhe University, Karlsruhe, D-76128 Germany
Geoscience Center, University of Goettingen, Goettingen, D-37077 Germany
Department of Applied Geology, Karlsruhe University, Karlsruhe, D-76128 Germany
Natural Resources Authority, P.O. Box 7, Amman, 11118 Jordan
Department of Applied Geology, Karlsruhe University, Karlsruhe, D-76128 Germany