254 1. 1. Krolenko 



After completing the surveys of the Kerch peninsula by the loop method 

 and compiling the tectonic pattern of its structure, a natural continuation 

 was the survey by the loop method of the Taman' pensinsula (^°^ ^^K 



The geological interpretation of the data of the Taman' peninsula surveyed 

 by the loop method (1950-1951) showed that within the limits of the studied 

 area, there was no north-west (Caucasian) trend of the structures. The extreme 

 northern tectonic line of the Taman' peninsula (anticline folds of the Kamennii 

 Cape and the Peklo Cape) in contrast to the geological ideas (^) was charac- 

 terized by a nearly east-west trend, i.e. corresponding to a trend of the 

 northern tectonic lines of the Kerch peninsula*. This w^ork (see Fig. 2) 

 considerably amplifies the details of a number of structures and their 

 linkages (Fontalov folds, folds of the Mt. Tsimbala, Karbetovka, Bliznets'a 

 Hill, etc.). The structure of the intervening synclines, formed in the weakly 

 anisotropic Pliocene deposits and alluvia of considerable thickness, was 

 not revealed by the loop method. 



During 1952 the Taman peninsula, except for its w^estern part, was seis- 

 mically surveyed v>?ith the aid of the reflection method ^^^K In the central 

 part of the peninsula, this work covers the areas which have been surveyed 

 by the loop method. A similarity was observed between the isonormals of 

 the loop method with the structure contours of the arbitrary horizons M 

 (the Upper Paleogene deposits) and B (the Upper Neogene deposits) of the 

 seismic survey on the limbs of the fold. The core, composed of intensively 

 faulted Maikop formation, could be studied in detail only with the loop meth- 

 od. These regions on the seismic cross -sections are expressed in the form 

 of zones of almost complete absence of reflecting areas. 



Thus, on the Taman' peninsula, as on the Kerch peninsula as shown on 

 Fig. 6, both methods successfully complement one another in the preparation 

 of structures for Kreliust drilling. 



During the second world war, when the prospecting in the Kerch peninsula 

 was temporarily interrupted, the loop method work was transferred to the 

 more eastern regions of the southern USSR. In 1942, a survey was made 

 of a 250 km^ area between the western shore of the Caspian Sea and the 

 Narat-Tyubinskii range of mountains to the west and south of Makhach- 

 Kala up to the Monas River. On the north-west of this area there was the 

 known Makhachkalinsldan brachy -anticline, the crestal part of which was 

 proposed for detailed loop studies. To the south of it was a plain covered 



* This conclusion is confirmed by the most recent data of structural core drilling on 

 Taman (^^). 



t Krelius drilling implies the drilling carried out after the preliminary geophysical survey. 



