268 1. 1. Krolenko 



geneous section. For this it is necessary to check the influence of the hetero- 

 geneity of the section and the surface heterogeneity on the results of the 

 observations. It is possible that these calculations mil make it possible to 

 extend the area of application of the loop method, using it to detei'mine the 

 angle of inclination of the deposits which are anistropic on a large scale. 



To interpret the results of observations obtained with change in the 

 coefficient of mutual induction between the circuits by the method of incli- 

 nation of the frame, it is necessary to know the effect of the angle of incli- 

 nation of the anisotropic deposits (a) on the observed angle of inclination 

 of the magnetic field on the earth's surface (q). This effect is given in a gen- 

 eral form by Dakhnov^^**); however, the solution of the integral in the 

 expression for angle /? through a and the coefficient of anisotropy A is 

 given only for two special cases : for points of the observation placed along 

 the dip and for points placed along the strike of the rocks, i.e. along the 

 axes OX and OY. A general solution should be obtained by deriving for- 

 mulae for calculations and establishing graphs from which it would be 

 possible to interpret field observations. 



Experimental work on the modernization of the loop method showed the 

 way for increasing the efficiency of this method, and also the depth of the study 

 which should extend the region of its appHcation. A number of problems 

 should be solved by field experiment; however, further development and 

 improvement in the loop method is possible only on the basis of more ex- 

 tensive production use, as a cheap and highly efficient method for geophys- 

 ical prospecting. 



REFERENCES 



1. A. D. Arkhangel'skii, et ah, A Brief Report on the Geological Structure and Oil 



Bearing Deposits of the Kerch Peninsula. Tr. GGRU, No. 13, Gosgeolizdat (1930). 



2. P. K. Aleinikova, The Geological Structure of the Glazovsk and Yurkinsk upfolds. 



Documents of the Krymneftegeologiya Department (1948). 



3. P. K. Aleinikova, Report on the Structural Geological Survey of the Malo- 



Babchinsk Area. Documents of the Krymneftegeologiya Department (1951). 



4. V. R. Burs IAN, The Theory of Electromagnetic Fields used in Electrical Prospect- 



ing. Zhdanov Leningrad Cos. University. 



5. V. N. Vaslil'ev, Report of the Work of the Feodosiisk Seismical Party 10-53 on 



the Territory of the Staro-Krymsk Region of the Crimea. Documents of the Krasno- 

 darsk GSGT Glavneftegeofizika MNP, SSSR (1954). 



6. I. M. GuBKiN, M. I. Varentsov, The Geology of Petroleum and Gas Deposits of 



the Taman Peninsula. Azneftetekhizdat (1934). 



7. K. S. GuMAROV, Report of the Work of the Pribalkhansk Electrical Prospecting 



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 tr. Glavneftegeofizika MNP SSSR, (1953). 



