Classification of rocks of the Bazhenov Formation

Конторович, А. Э.; Yan, P.А.; Замирайлова, А Г; Костырева, Е.А.; Eder, V. G.

doi:10.1016/j.rgg.2016.10.006

Cited by 42 publications

(14 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Our experiments showed that strain BYF could grow with barite or celestine. The barite occurrence in the Bazhenov Formation rocks has been documented [45]. The barium concentration in the 1-R water is not sufficiently high to speculate that barite fuels sulfate reduction in the aquifer.…”

Section: Strain Byf Morphology and Physiologymentioning

confidence: 99%

“…High strontium content up to 500 mg/L is a wellknown characteristic of the West Siberian Megabasin [46]. It is also conceivable that concentration of sulfate could be higher in pore water of the rock matrix due to oxidation of such minerals as pyrite, the high content of which is recorded in the Bazhenov Formation [45]. Sulfate may also remain undetected in the relict marine water localized in spatially isolated sulfate-rich parts of the aquifer system.…”

Section: Strain Byf Morphology and Physiologymentioning

confidence: 99%

See 1 more Smart Citation

Domestication of previously uncultivated Candidatus Desulforudis audaxviator from a deep aquifer in Siberia sheds light on its physiology and evolution

et al. 2019

View full text Add to dashboard Cite

An enigmatic uncultured member of Firmicutes, Candidatus Desulforudis audaxviator (CDA), is known by its genome retrieved from the deep gold mine in South Africa, where it formed a single-species ecosystem fuelled by hydrogen from water radiolysis. It was believed that in situ conditions CDA relied on scarce energy supply and did not divide for hundreds to thousand years. We have isolated CDA strain BYF from a 2-km-deep aquifer in Western Siberia and obtained a laboratory culture growing with a doubling time of 28.5 h. BYF uses not only H 2 but also various organic electron donors for sulfate respiration. Growth required elemental iron, and ferrous iron did not substitute for it. A complex intracellular organization included gas vesicles, internal membranes, and electron-dense structures enriched in phosphorus, iron, and calcium. Genome comparison of BYF with the South African CDA revealed minimal differences mostly related to mobile elements and prophage insertions. Two genomes harbored <800 single-nucleotide polymorphisms and had nearly identical CRISPR loci. We suggest that spores with the gas vesicles may facilitate global distribution of CDA followed by colonization of suitable subsurface environments. Alternatively, a slow evolution rate in the deep subsurface could result in high genetic similarity of CDA populations at two sites spatially separated for hundreds of millions of years.

show abstract

Section: Strain Byf Morphology and Physiologymentioning

confidence: 99%

Section: Strain Byf Morphology and Physiologymentioning

confidence: 99%

Domestication of previously uncultivated Candidatus Desulforudis audaxviator from a deep aquifer in Siberia sheds light on its physiology and evolution

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Ryzhkova (A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Novosibirsk). The section was described using the classification and names of the Bazhenov Formation rocks adopted at the IPGG SB RAS (Kontorovich et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

Geochemistry of organic matter of the Bazhenov Formation in the north of the Khantei anteclise

Костырева

Sotnich

2017

Russian Geology and Geophysics

Self Cite

View full text Add to dashboard Cite

Results of comprehensive geochemical studies of dispersed organic matter of the Bazhenov Formation are presented. The maximum total contents of organic carbon are found in the areas of the Surgut arch and South Nadym megamonoclise. The contents of organic matter are high (up to 24%) at the top of the formation section and gradually decrease to its bottom. By pyrolysis parameters and the composition of hydrocarbon biomarkers, the organic matter is referred to as type II kerogen (sapropelic organic matter) and is localized in the oil window.

show abstract

“…Based on results of the analyses, the chemical composition of rocks was recalculated to the mineral one, using the MINLITH software proposed by Rosen et al (2000). Based on the recalculation data, each sample was given a lithological name according to the adopted classification by Kontorovich et al (2016) (in Russian) and Lazar et al (2015) (in English). Following these authors, the rocks with >50% biogenic quartz were called siliceous mudstones, and those with <50% clay material and <50% biogenic quartz, siliceous-argillaceous mudstones.…”

Section: Methodsmentioning

confidence: 99%

The regularities of the distribution of siliceous mudstones and “coccolith” member of the Bazhenov Formation

Eder

Замирайлова

Yan

2017

Russian Geology and Geophysics

Self Cite

View full text Add to dashboard Cite

Based on results of comprehensive lithological and geochemical analysis, we have established the regularities of the spatial distribution of major rock-forming components of the Bazhenov Formation in the West Siberian Basin (WSB), namely, siliceous, argillaceous, and carbonate material. According to the SiO 2 /Al 2 O 3 ratio, the most siliceous rocks of the Bazhenov Formation are biomorphic siliceous mudstones (radiolarites) (>20), cryptocrystalline siliceous mudstones (8-20), and the most argillaceous rocks are argillaceous mudstones (<3). Intermediate SiO 2 /Al 2 O 3 values (3-8) are observed in mudstones of different types. North-south distribution profiles of the SiO 2 /Al 2 O 3 ratio and CaO content in different areas of the WSB were constructed. The areas of occurrence of radiolarites (potential reservoirs) and a "coccolith" member with the highest content of organic matter have been clarified. The thickest radiolarite bed (3-4 m) has been found in the Salym area. In some sections of the North Surgut area, a "coccolith" member is 2 m thick and is carbonatized. In most of the sections of the North Surgut, South Tomsk, and West Tomsk regions, rocks of this type are observed as 1 cm thick intercalates, and in the Novosibirsk region they are virtually lacking. We have established that a "coccolith" member, localized mostly in the upper part of the Bazhenov Formation, occurs not only in the Salym and Krasnoleninskii regions but also in the North Surgut region. It was also found in the Northern region in the southern and central parts of the South Nadym megamonoclise. Coccolithophorid relics are occasional in the South and West Tomsk regions and are lacking in the Novosibirsk region and in the Northern region of the South Nadym megamonoclise.

show abstract

Classification of rocks of the Bazhenov Formation

Cited by 42 publications

References 5 publications

Domestication of previously uncultivated Candidatus Desulforudis audaxviator from a deep aquifer in Siberia sheds light on its physiology and evolution

Domestication of previously uncultivated Candidatus Desulforudis audaxviator from a deep aquifer in Siberia sheds light on its physiology and evolution

Geochemistry of organic matter of the Bazhenov Formation in the north of the Khantei anteclise

The regularities of the distribution of siliceous mudstones and “coccolith” member of the Bazhenov Formation

Contact Info

Product

Resources

About