Geology Reference
In-Depth Information
in the most faulted areas, in the mud volcano areas, and around surface oil-
and gas-shows and commercial hydrocarbon saturation zones. Salinity of
these waters ranges between 30 and 440 mg.-equiv. (8.6-126 g/l); primary
salinity factors are 42-92%-equiv., secondary salinity (in the hard waters)
is 5-57%-equiv., secondary alkalinity is 0.04-4%-equiv., primary alkalin-
ity (in the hydrocarbonate-sodium waters) is 2-7%-equiv.
The Apsheron Stage ground water description is included in Table 2.1.
Consistent increase is recorded in the Stage's ground water salinity and
metamorphism down the folding's regional dip and in the direction of
weakening of complex's deformations (Figure 2.19).
A number of clear patterns are also noted in water composition and
salinity distribution within local structures. In all areas water salinity,
chlorine, calcium and magnesium ion contents increase from the struc-
ture crests to their periphery. Maximum values of these parameters are
Figure
2.19
South Caspian Depression (west flank). Schematic map of the Apsheron
Stage ground water total salinity.
