Combining Resistivity and Aeromagnetic Geophysical Surveys for Groundwater Exploration in the Maghnia Plain of Algeria

Table 1

Interval resistivity variations of lithological units of the study area.

N	Formation	Age	Resistivity; (ohm-m)	Thickness; (m)
1	Clays	Plio-Quaternary	1–10	20–120
2	Resistive horizon (alluvium, gravel)	Plio-Quaternary	15–231
	Aquifer		15–70
3	Conductive horizon (marls)	Miocene	1–35	50–800
4	Sandstone	Miocene	150-150
5	Sandstones	Jurassic (Oxfordian)	30–200	300–400
	Conductive horizon	Jurassic (Oxfordian)	1–83