Characteristic of quaternary sedimentation on a shelf of the Laptev Sea according to the molecular composition of n-alkanes     

A. S. Ulyantsev  E. A. Romankevich  S. Yu. Bratskaya  N. A. Prokuda  S. V. Sukhoverkhov  I. P. Semiletov  V. I. Sergienko 《Doklady Earth Sciences》2017,473(2):449-453

The molecular composition and distribution of the concentration of n-alkanes are considered for sediments of boreholes drilled in the shallow part of the Laptev Sea, in the area of Buor Khaya Gulf. The diverse molecular composition of n-alkanes is dominated by long-chain odd homologs, which indicate terrigenous organic matter (OM). Heterogeneous distribution and burial of OM are shown under conditions of pulsating contribution of river and thermoabrasive material and multiple changes in them up to hiatuses in sedimentation.  相似文献   

Alkanes in Quaternary deposits of the Laptev Sea     

E. A. Romankevich  A. A. Vetrov  N. A. Belyaev  V. I. Sergienko  I. P. Semiletov  S. V. Sukhoverkhov  S. Yu. Bratskaya  N. A. Prokuda  A. S. Ulyantsev 《Doklady Earth Sciences》2017,472(1):36-39

The distribution and genesis of n-alkanes in sediments from the 38-m sequence obtained during core boring in the Ivashkina lagoon were studied. Sediments were formed in the Holocene as a result of thermokarst and penetration of seawater. The sequence mostly includes permafrost rocks partially molten in the upper horizons and covered by Quaternary deposits, which are mostly the products of thermoabrasion.  相似文献   

Polycyclic aromatic hydrocarbons in Holocene–Pleistocene sediments of the Laptev Sea     

A. N. Drozdova  A. A. Vetrov  E. A. Romankevich  N. A. Prokuda  S. V. Sukhoverkhov  S. Yu. Bratskaya  V. I. Sergienko  I. P. Semiletov  A. S. Ulyantsev 《Doklady Earth Sciences》2016,468(1):496-499

The distribution and genesis of polycyclic aromatic hydrocarbons (PAHs) were studied in a 40-m core from a lagoon of the Laptev Sea that appeared during the Holocene resulting from the flooding of seawater into a freshwater lake in the area of the Buor-Khaya Gulf. The bulk of the core is constituted of permafrost rocks, thawed partially in their upper layers and covered with recent sediments (mainly by the products of intense thermoabrasion). The ratio of petrogenic and pyrogenic PAHs was evaluated.  相似文献   

Geochemical Typing of Organic Matter in the Bottom Sediments Based on the Molecular Composition of Saturated Aliphatic Hydrocarbons     

Ulyantsev  A. S.  Prokuda  N. A.  Streltzova  E. A.  Belyaev  N. A.  Romankevich  E. A. 《Oceanology》2021,61(5):727-735

Oceanology - The paper presents approaches to typing organic matter (OM) from bottom sediments based on molecular indicators and statistical analysis. The results of analyzing the molecular...  相似文献