A CONTRIBUTION TO THE GEOCHEMISTRY OF RESERVOIR FORMATIONS: THE LOWER FRASNIAN OF THE VOLGA-URALS (Part 1 of 3)

Autor:	N. M. Strakhov, K. F. Rodionova, E. S. Zalmanzon
Rok vydání:	1959
Předmět:	chemistry.chemical_classification Total organic carbon Strontium Phosphorus Geochemistry chemistry.chemical_element Geology Weathering Devonian Hydrocarbon chemistry Clastic rock Marl
Zdroj:	International Geology Review. 1:1-23
ISSN:	1938-2839 0020-6814
DOI:	10.1080/00206815909473523
Popis:	The hydrocarbon concentrations in rocks of Frasnian, Givetian, and Famennian age are considerably higher than the concentrations in other units in the Devonian section of the Volga-Ural province, U. S. S. R. The maximum hydrocarbon concentration occurs in the Domanik, which is the host for the largest accumulation of ancient organic material on the Russian platform. The correlation of hydrocarbon A with oils and other hydrocarbons and with organic carbon is very low. Trace elements are distributed uniformly throughout clastic sediments and differentially in precipitates, including clays, marls, and limestones. Iron, manganese, phosphorus, copper, and strontium concentrations increase as the host rocks become more clastic; chromium, niobium, and cobalt decrease. This difference is an additional criterion for mapping ancient pelagic zones and shoreline. However, weathering may lead to artificial concentrations for the various elements.
Databáze:	OpenAIRE
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