Geophysical processes and biosphere: article

Аnnotation: Previously obtained results of the analysis of the trace element (TE) content of caustobiolites indicate the polygenicity of the TE content of oils. In this work, this result is confirmed and supplemented on the basis of the results of a correlation analysis of data from a specially compiled database on analyzes of the TE content of naphthides of Northern Eurasia obtained by different authors (more than 150 analyses). The existence of a regression relationship is confirmed, which is interpreted as a conse-quence of the progressive reworking of the initially biogenic matter with the ascending deep fluid flow. The tendency of statistical independence of the concentrations of the so-called biogenic and the deep-seated TEs in naphthides is found. A weak correlation between the amplitude of the positive Eu-anomaly and the difference in the correlation coefficients of the TE content of sample with the com-position of the Lower and the Upper continental crust are found. Geodynamic situations are discussed that are most consistent with the data obtained on the nature of naftidogenesis and, thus, mostly suitable for the formation of large hydrocarbon deposits. A significant role is noted to the transformation of matter between different structural-material reservoirs of the lithosphere (in particular, the recycling of initially near-surface matter in subduction zones and through other deep crust thrusts) in the formation of both hydrocarbons fields and ore deposits. Such recycling ensures the interchange of matter between the deep horizons of the planet and the biosphere.