Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/j.ejrh.2015.11.016
Title (Primary) Hydrochemical considerations for identifying water from basaltic aquifers: The Israeli experience
Author Möller, P.; Rosenthal, E.; Inbar, N.; Magri, F.
Source Titel Journal of Hydrology: Regional Studies
Year 2016
Department ENVINF
Volume 5
Page From 33
Page To 47
Language englisch
Keywords Limestone aquifer; Basaltic-rock aquifer; Golan Heights; Yizre’el-Harod-Bet She’an Valley; Hydrochemistry
UFZ wide themes RU5;

Study region

Yizre’el-Harod-Bet She’an valley, Lower Galilee and Golan Heights, Israel.

Study focus

Identification of pure groundwater that infiltrated the widespread alkali olivine basalts in the replenishment areas of the study region.

New hydrological insights for the region

The groundwater is characterized by equivalent ratios such as Na/Cl > 1; Na/HCO3 < 1; SO42−-fraction < 0.1; HCO3/(Ca + Mg + Na) ≥ 0.7; HCO3/(Ca + Mg) > 1; 1000Br/Cl in the range of 1–2.5; δ34Ssulfate < 5‰ (CDT). Bowl-shaped-normalized REY distribution patterns are indicative for recharge over basaltic outcrops. These aquifers are recharged not only by direct precipitation on volcanic exposures but also by water from underlying confined limestone aquifers. Groundwater from the limestone aquifers is characterized by Na/Cl < 1; HCO3/(Ca + Mg) < 1; HCO3/(Ca + Mg + Na) < 0.7; 1000Br/Cl in the range of 1.6–10; δ34Ssulfate range from 20 to 25‰ (CDT). The wide spread of these parameters characterizes mixing of groundwater from both limestone catchments and aquifers in different stages of hydochemical evolution. The REY patterns of these groundwaters resemble those of limestones. If δ34Ssulfate and/or REY distribution patterns are not available, the unmixed water from basaltic-rock aquifers show up in the field of HCO3/(Ca + Mg) > 1 and HCO3/(Ca + Mg + Na + K) > 0.7. Application of these parameters to analyses showing only the main constituents of groundwater reveals that in the study area the contribution of unmixed groundwater from basaltic catchments is largely restricted to the Golan Heights. Mixing of groundwater by interaquifer flow is a common phenomenon all over the area.

Persistent UFZ Identifier
Möller, P., Rosenthal, E., Inbar, N., Magri, F. (2016):
Hydrochemical considerations for identifying water from basaltic aquifers: The Israeli experience
J. Hydrol. Reg. Stud. 5 , 33 - 47 10.1016/j.ejrh.2015.11.016