ISSN 0145-8752, Moscow University Geology Bulletin, 2018, Vol. 73, No. 2, pp. 150–160. © Allerton Press, Inc., 2018.
Original Russian Text © A.Kh. Bogomolov, Sv.A. Sidorenko, 2018, published in Vestnik Moskovskogo Universiteta, Seriya 4: Geologiya, 2018, No. 1, pp. 44–53.
Dedicated to the centenary of Academician A.V. Sidorenko
and to the 115th jubilee of Corresponding Member
of the RAS N.B. Vassoevich: to the great devotees of the studies
of Precambrian organic matter. “There is no chemical force
that acts more constantly on the Earth’s surface, and hence more
powerful in its effects, than living organisms as a whole”
The Features of the Transformation of Organic Matter
of Precambrian Carboniferous Rocks
of the Ukrainian Crystalline Shield
A. Kh. Bogomolov
* and Sv. A. Sidorenko
Department of Geology, Moscow State University, Moscow, 119991 Russia
Oil and Gas Research Institute, Russian Academy of Sciences, Moscow, 119333 Russia
Received September 1, 2017
Abstract⎯The main features of the transformation of organic matter (OM) in the greenschist, amphibolite,
and granulite facies of metamorphism are considered based on the example of the Ukrainian crystal shield.
The occurrence area and OM content in highly carbonaceous ancient rocks are characterized. The composi-
tion of primary sedimentary rocks and the processes of accumulation of biophile elements under the OM
transformation are reconstructed.
Keywords: transformation of organic matter, facies of metamorphism, biophilic elements, bitumen, recon-
One of the paramount problems of present-day
geology is the comprehension of early stages in the
Earth’s evolution, which is first of all related to the
studies of Precambrian formations. The great atten-
tion that is paid to this problem by Russian and foreign
researchers is caused by vital practical needs.
Academician A.V. Sidorenko noted (1975) that
“…despite the special importance of the studies of
graphite in Precambrian sedimentary–metamorphic
rocks, this very abundant mineral that occurs in many
types of sedimentogenic rocks including those of deep
metamorphose has been studied poorly. Only a few
studies have been carried out on the geology, mineral-
ogy, geochemistry, and metamorphism of graphite and
graphite-like compounds; hence, the further compre-
hensive studies on the geochemistry of carbon.”
The theory of the biosphere created by the out-
standing Soviet geochemist Academician V.I. Ver-
nadskii presents a firm basis to characterize the Pre-
cambrian conditions of sedimentation. The influence
of living organisms on the processes within the bio-
sphere was as significant in the Proterozoic time as
that in the later epochs. The warm shallow-water epi-
continental seas with abundant photosynthesizing
organisms that caused the transformation of the Earth
atmosphere and hydrosphere were distributed at that
time more widely than in the Phanerozoic.
Formulation of the problem. The studies of Precam-
brian highly carbonaceous deposits determined a
number of issues in terms of the possible formation of
oil and gas.
(1) The scale of OM occurrence and concentra-
tions in graphite-containing and highly carbonaceous
(2) The data that resulted from the reconstruction
of the composition of primary sedimentary rocks.
(3) The biochemical components of living matter
derived from vital activities.
(4) The processes of accumulation of biophile ele-
ments in the OM of graphite-containing rocks.