Sinkhole formation in relation to nearby wastewater storage in abandoned quarries, southeastern Riyadh, Saudi Arabia

Mustafa Kemal Emil1, Mohamed Sultan1, Saleh Alsefry2 and Bandar Algahtani3, (1)Western Michigan University, Department of Geological and Environmental Sciences, Kalamazoo, United States, (2)Saudi Geological Survey, Jeddah, Saudi Arabia, (3)Saudi Geological Survey, Riyadh, Saudi Arabia