Geology Reference
In-Depth Information
with the fields of the flank folded belt band (Lali, Karaj, Marun, Ahwaz and
Bibi-Hakimeh, Figure 3.12).
The data show a picture paradoxical for a typical elision regime. In most
Alpine mobile belt regions horizontal gradients of the normalized water-
head are directed oppositely to the lateral ground water flow postulated
by a number of scientists as mandatory: from the piedmont trough and
intermontane depression centers toward their periphery. That shows that:
t
The elision regime is not typical of deep horizons in the
stated regions.
t
The elision regime is rather an exception than the general
rule.
t
The major mechanism of ground water flow in the sedi-
mentary sequences is vertical migration through faults and
elevated fracturing zones.
The significance of inter-formational large-scale discharge through sys-
tems of faults as the defining mechanism of ground water flow into the
structural traps is clearly indicated by:
t
The correlation conducted in the South Caspian Depression
of the geobaric field's stress parameter or freedom of water-
exchange (average for all intervals in the specific field or
prospect's formation pressure abnormality factor value
(
К
abn
)
6
vs. the trap's per-unit area fracturing parameter
d
i
,
km
2
/km
2
(product of the total length of faults and their
amplitude divided by the area of the structure).
t
The folding intensity factor
К
in
, m/km
2
(ratio of structure's
height to its area).
t
The factors of the invasion extent into the section of the
Valanginian-Middle Jurassic generation lower alkaline
water:
h
d
(%)
(the ratio of the interval's thickness occupied
by the injected water and the total thickness of the Middle
Pliocene-Quaternary section within the local high) and
H
tran.zone
, which is depth to the upper boundary of the transi-
tion zone from hard to alkaline water.
6
Under unrestricted discharge the abnormality factor is close to 1; restrictions of water-
exchange form AHFP with the factor values greater than 1.
