Bitumen as the cause of the occurrence of zones of low electrical resistivity in the basement rocks of the West Siberian plate

In: Moscow University Bulletin. Series 4. Geology, Band 1, Heft 3, S. 35-49

Abstract

This article presents the results of studies of the material constitution and physical properties of rocks of foundation of the West Siberian Plate. It is shown that anthraxolite and kerite groups are present in bitumen rocks. We assume that the bitumens create a Late Paleozoic paleo-deposit, transformed under the conditions of apocatagenesis. Impregnation with highly transformed organic matter leads to a significant decrease in electrical resistivity to values of 1–30 Ohm metre, which must be taken into consideration when interpreting low-resistivity zones on log data.