STRUCTURAL PECULIARITIES OF PRIOLKHONYE B Y THE ELECTRICAL SURVEY DATA (WEST TRANSBAIKALIA)

With the TEM sounding method, a subhorizontal zone more than 20 km in length and 1-2.5 km in width with resistivities of <1 to few tens ohm- m has been mapped at the Chernorud-Mukhor site and along the Maloe Sea shore on the Priolkhonye area. This conductive zone is confined to th e Primorsky fault in the northwest and to the Kuchulga fault in the so utheast. The SP profile indicates:hat the conductive zone is made up o f a graphite-bearing horizon of Upper Archean metamorphic rocks of the Tazheran Formation. Since the horizon extends over a large area, it c an be used as a key one in studying the geological structure of Priolk honye. The data obtained by the TEM sounding method and SP survey show that the faults of the northeastern striking divide the site rocks in to several vertically displaced blocks. It may also be supposed that t he site's tectonic features are determined not only by the narrow line ar folds but also by the gently sloping lower-order syncline.