As you know, a fossil water aquifer has an old geological structure. Fossil water aquifers are mostly constructed between the depths 700-1300 meters. Commonly used hydrogrological investigations methods are not capable to analyse the source of it's formation based on the near surface water flow. On the other hands, commonly used geophysical methods to investigate the near surface aquifers are not capable to delineate it's structure, and recognise it's location and approximate extent. In this way, very geophysical methods, such as the seismic refraction, resistivity method and EM methods are not suitable to detect them. I am wondering if there is, or there are prominent methods to investigate this old sources of water supplies reliably? Can anyone introduce me a novel report considering their structure and the best method for their exploration?
Dear Anicet Beauvais,
Thank you very much for your comment.
Regards,
Hamzeh
No near surface or airborne geophysical investigations will give you the indication of "Fossil Water". Only they can indicate the existence of the fluid material within the sub-surface, but not its geologic time scale.
The salinity or mineralisation of fossil water at depth may be a physical property that may discrimitate the fossil water aquifer by the other rocks. But is hard in those depths to apply standard methods like 2D apparent resistivity methods. Seismic reflection method may give you an idea (using density contrast between aquifer and around rocks).
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