Diagenetic transformation of organic matter in the Holocene sediments of the Black Sea: pyrolysis data

被引：6

作者：

Melenevskii, V. N. ^{[1
]}

Saraev, S. V. ^{[1
]}

Kostyreva, E. A. ^{[1
]}

Kashirtsev, V. A. ^{[1
]}

机构：

[1] Russian Acad Sci, AA Trofimuk Inst Petr Geol & Geophys, Siberian Branch, Pr Akad Koptyuga 3, Novosibirsk 630090, Russia

来源：

RUSSIAN GEOLOGY AND GEOPHYSICS | 2017年 / 58卷 / 02期

关键词：

organic matter; diagenesis; Black Sea; pyrolysis; biomarker molecules; CHROMATOGRAPHY MASS-SPECTROMETRY; CHEMICAL-COMPOSITION; SULFUR; SOIL; LIPIDS; GC/MS; ACIDS; ROCK;

D O I：

10.1016/j.rgg.2016.03.015

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The article presents the results of pyrolysis (Rock-Eval) and pyrolysis gas chromatography mass spectrometry analysis of organic matter (OM) in the Holocene sediments of the Black Sea. The studied samples represent two parts of the sedimentary column: coccolith ooze with 2.8% C-org at the top and sapropels oozes with 8.5% C-org at the bottom. The deposition of Holocene sediments was inferred to take place under euxinic conditions, which are more favorable for organic-matter preservation and sapropel deposition during the Old Black Sea stage. The results show that the modern processes of microbially mediated methane oxidation in the Old Black Sea oozes are interpreted as the main cause of their apparently lower degree of diagenetic transformation as compared to that of coccolith oozes. (C) 2017, V.S. Sobolev TOM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.

引用

页码：225 / 239

页数：15

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