Geology Reference
In-Depth Information
Table 5.
1
Clay porosity vs. depth.
Total clay porosity, %
Hydrodynamic
environment
Normal compaction of clayey rocks
Type of section
Alte
rnating sands and clays. Clay members
up to 100-150 m thick. Clay content of section 40 %
Geostructural
element
Mobile belt
Stable platform
Oil and gas
basin
South Caspian
Maracaibo
Azov-Kuban
Middle
Caspian
Ater
J.M.
We l l e r
Region, area
Central
Apsheron
SW
Turkmeni-
stan
Maracaibo
Depression
Plain
Crimea
Scythian
Plate
Novoselov
High
(Crimea)
Adygey
High
Stavropol
Arch
Age of clays
N
2
Kz
Cr
2
+ Pg
Pg
3
+ N
1
Cr
1
+ Pg
Pg
3
+ N
1
Pz
500
31.3
28.0
20.6
31.4
33.3
21.0
18.6
36.0
29.9
1,000
24.8
21.0
16.2
25.0
26.5
14.8
12.5
27.2
23.6
1,500
18.9
16.5
12.7
18.0
10.4
10.5
22.4
15.8
2,000
13.8
13.5
9.8
12.2
6.0
8.8
