Geology Reference
In-Depth Information
a
b
c
Figure 1.11
Tersk-Caspian Foredeep. Oil and gas fields and prospective structures
location map.
a
. Regional faults: I. Baksan, II. Chegem, III. Nalchik, IV. Cherek, V. Urukh,
VI. Ardon, VII. Tskhinvali-Kazbek, VIII. Argun, IX. Aksay, X. Datykh-Akhlov, XI. Benoy-
Eldar, XII. Gudermes-Mozdok, XIII. Krayevoy (Priterechny), XIV. Cherkes, XV. Sredinny
(Terskoy), XVI. Argudan-Sunzhen, XVII. Chernogorsky; b. Oil fields; c. Prospective
structures. Fields and structures:
1
. Dykhatakaya,
2
. Syurekskaya,
3
. Predgroznenskaya,
4
. Benoy,
5
. N. Benoy,
6
. Oktyabrskaya,
7
. Andreyevskaya,
8
. Starogroznenskaya,
9
. N. Oktyabrskaya,
10
. Sernovodskaya,
11
. Karabulak-Achaluki,
12
. Zamankul,
13
. Kardzhin-Zmeyskaya,
14
. N. Zamankul,
15
. Kharbizhin,
16
. N. Sernovodskaya,
17
. S. Yastrebinskaya,
18
. Argun,
19
. Khankal,
20
. Belorechenskaya,
21
. E. Oktyabrskaya,
22
. Sayasan,
23
. Zandag,
24
. Granichnaya,
25
. Nozhay-Yurt,
26
. Gilyan,
27
. Masketin,
28
. Novolakslaya,
29
. E. Gudermes,
30
. Koshkeldin,
31
. W. Gudermes,
32
. Bragun,
33
. Goryacheistochnenskaya,
34
. Khayan-Kort,
35
. Mineralnaya,
36
. N. Mineralnaya,
37
. Eldar,
38
. Eldar,
39
. Malgobek-Gorskaya,
40
. N. Malgobek,
41
. Akhlovskaya,
42
. Aral-Dalaterek,
43
. Novo-lvanovskaya,
44
. Prokhlandnenskaya,
45
. Pravoberezhnaya
(N. and S.),
46
. N. Bragun,
47
. Chervlennaya North,
48
. Chervlennaya South,
49
. Komsomolskaya,
50
. Salkushi,
51
. Alpatovskaya,
52
. Argudan,
53
. Kurskaya,
54
. Sovetskaya,
55
. Cherek-Baksan,
56
. Maryinskaya,
57
. Lesnaya.
to 1,000 m; and the diagonal faults up to 1,500 m. The major tectonic ele-
ments of the deep in a north-south cross-section are: Trans-Terek anticli-
nal zone; Trans-Terek trough; Terek anticlinal zone; Terek syncline zone;
Tersk anticlinorium; Alkhanchurt-Petropavlovsk syncline zone; Sunzha
anticlinorium; Beslan-Sunzha Depression; Chernogor monocline; and in
the eastern part of the region the Dagestan salient (wedge) and the anti-
clinorium of the Dagestan Piedmont.
Two major stages differing in their structural plans are identified in
the section. The lower, Mesozoic, with the local structures relatively big,
high-amplitude, complex, block-type; these are brachianticlines delim-
ited by tapering down conoidal faults (normal faults and overthrusts)
with substantial amounts of throw up to 2,500 m (the Sunzha anticlino-
rium). The upper, Post-Eocene one includes narrow (compressed) eroded
