258 



1. 1. Krolenko 



In 1955 small scale trials with the loop method were also carried out 

 on the Ust'-Urt plateau within the limits of the positive gravitation anomaly 

 of the force of gravity, depicted in 1954. Parametric observations showed 

 that the geoelectrical characteristics of the upper part of the section, owing 

 to its electrical heterogeneity, are not favourable for the use of the loop 

 method. 



However, the existence of large-scale anisotropisra of a sedimentary 

 formation is a factor which makes it possible to recommend working with 

 the loop method provided that the angle of dip of the sediments is 

 sufficient. 



/ 



I / 



n/v 





I 



,^w 



I ' TIT ^ >' ^ ' if 



/ _ / / / r. 



: ^i-i \i I/; ; .yV/ 



I I 1/ /\ \. v/ / / 



V--I-- 





^ w 



Zoozernyi 





/ ' I / 



[Z]' [Z]2 E35 E3- EE]5 HJe 



Fig. 8. The structure of the Sineglazovskii area according to the data of the loop 

 method (Chelyabinsk region). Compiled by I. I. Krolenko. 1 — loop vectors 

 {d = 100 m) ; 2 — ^loop vectors (J = 200 m) ; 3 — axis of fold according to the data of 

 electrical prospecting; 4 — axis of fold according to geological data; 5 — hnes normal 

 to the vectors; 6 — number of loop profiles. 



