Инд. авторы:	Melenevskii V.N., Leonova G.A., Bobrov V.A., Kashirtsev V.A., Krivonogov S.K.
Заглавие:	Transformation of Organic Matter in the Holocene Sediments of Lake Ochki (South Baikal Region): Evidence from Pyrolysis Data
Библ. ссылка:	Melenevskii V.N., Leonova G.A., Bobrov V.A., Kashirtsev V.A., Krivonogov S.K. Transformation of Organic Matter in the Holocene Sediments of Lake Ochki (South Baikal Region): Evidence from Pyrolysis Data // Geochemistry International. - 2015. - Vol.53. - Iss. 10. - P.903-921. - ISSN 0016-7029. - EISSN 1531-8397.
Внешние системы:	DOI: 10.1134/S0016702915080054; РИНЦ: 24952644; SCOPUS: 2-s2.0-84942418238; WoS: 000361754900004;
Реферат:	eng: Transformation of organic matter (OM) in Holocene sediments of Lake Ochki (southern coast of Lake Baikal) at the early stages of diagenesis has been studied using pyrolytic methods of Rock Eval (RE-pyrolysis) and pyrolysis-gas chromatography-mass spectrometry (Pyr-GC-MS). OM has been analyzed in lacustrine sediments and their main producers, phytoplankton and zooplankton. Data on the distribution of hydrocarbon-biomarkers in sediments indicate an uninterrupted influx of terrigenous OM and transformation of OM precipitated by microorganisms. The analysis of molecular composition of pyrolysates makes it possible to assume a sharp change of sedimentation conditions in the upper part of sedimentary sequence (0-60 cm). It is shown that the macromolecular aliphatic kerogen structure begins to form in incoherent sediment at the very early stages of diagenesis.
Ключевые слова:	PRECURSORS; HUMIFICATION; GEOCHEMISTRY; RECONSTRUCTIONS; SOIL; LIPIDS; METHYL KETONES; PHOTOSYNTHETIC PIGMENTS; ROCK-EVAL PYROLYSIS; hydrocarbons-biomarkers; pyrolysis; organic matter; diagenesis; recent sediments; DELTA-C-13;
Издано:	2015
Физ. характеристика:	с.903-921