Premium
Isotopic study of alluvial groundwaters, south‐west lockyer valley, queensland, australia
Author(s) -
Dixon William,
Chiswell Barry
Publication year - 1994
Publication title -
hydrological processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.222
H-Index - 161
eISSN - 1099-1085
pISSN - 0885-6087
DOI - 10.1002/hyp.3360080408
Subject(s) - groundwater , alluvium , aquifer , geology , hydrology (agriculture) , salinity , alluvial fan , alluvial plain , geochemistry , geomorphology , sedimentary rock , oceanography , paleontology , geotechnical engineering
The isotopic chemistry of alluvial groundwaters from two adjacent valleys are described and hydrological processes within related aquifers are identified as evidenced by oxygen‐ 18 , deuterium, tritium and chloride data. A plot of δ 18 O against δD values reveals isotopic enrichment of the groundwater by the recycling of spray irrigation water. A plot of tritium versus chloride concentrations displays separate linear correlations for alluvial groundwaters within the two valleys. The salinity has a common source, therefore the separate correlations are interpreted as the past transfer of low salinity groundwater from the alluvial aquifers in one valley to the underlying sandstone aquifers.