Formation age | Type of rocks | Thickness (m) | Main hydraulic characteristics | General consideration |
Surficial recent deposits | Recent gravels, sand and silt, basalts | Up to 50 | Local aquifer when conditions allow | Irrelevant as a source of water |
Eocene | Chalk marl and chert | Up to 150 | Appropriate local aquifer | Local water supply in Jafr area |
Upper Cretaceous-Tertiary | Bituminous Marl | 200 - 300 | Aquitard | Aquitards, confining layer |
Campanian Maastrichtian | Silicified limestone overlain by beds of phosphatic chert | ca. 70 | Excellent aquifer | Good to excellent Aquifer |
Turonian-Santonian | Massive sandy limestone | 55 | Good aquifer | |
Cenomanian | Alternating beds of limestone, dolomite, marly limestone, dolomitic limestone, sandstone, marl and some gypsum layers | ca. 300 | Poor aquifer. In many areas springs issue from the limestone and dolomite beds | In general, poorly developed aquifer with some good yield aquifer layers. On a regional scale it allows water to vertically pass through |
Lower Cretaceous | Coarse, medium and fine-grained sandstone | 160 - 200 | Good aquifer | Good to excellent aquifer, S of Mujib it directly overlies Silurian deposits |
Triassic | Siltstone, sandstone calcareous sandstone | 0 m N of Mujib, >400 m at the NE edge of the Dead Sea | Poor to good | Sediments start north of Mujib, containing brackish water |
Permian | Sandstone, siltstone, conglomerate | 0 m N of Mujib-300 m at the NE edge of the Dead Sea | Good aquifer | Good aquifer containing fresh to brackish water |
Silurian-Cambrian sandstone series | Mainly coarse, medium and coarse-grained sandstone | 1300 - 1400 | Excellent aquifer | Excellent aquifer |