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International Conference on Gas Hydrates (ICGH) (6th : 2008)

Authigenic carbonates related to gas seepage structures in the Sea of Okhotsk (NE offshore Sakhalin): Results from the Chaos Project Krylov, Alexey; Logvina, Elizaveta; Hachikubo, Akihiro; Minami, Hirotsugu; Nunokawa, Yutaka; Shoji, Hitoshi; Mazurenko, Leonid; Matveeva, Tatyana; Obzhirov, Anatoly; Jin, Young Keun

Abstract

Mineralogical and isotopic analysis of authigenic carbonates from different gas hydrate-bearing seepage structures in the Derugin Basin (Sea of Okhotsk) are presented. The analysis showed the existence of four morphological types of carbonates, with all of them mainly of Mg-calcite.13C values of carbonates generally light owing to the inheritance of carbon from microbial methane. 13C-enriched samples at the VNIIOkeangeologia structure with 13C values of up to +9.3‰ represent carbonate precipitation due to methanogenesis. The calculated equilibrium 18O values of carbonates in general correspond to measured values.

Item Metadata

Title
Authigenic carbonates related to gas seepage structures in the Sea of Okhotsk (NE offshore Sakhalin): Results from the Chaos Project
Creator
Krylov, Alexey; Logvina, Elizaveta; Hachikubo, Akihiro; Minami, Hirotsugu; Nunokawa, Yutaka; Shoji, Hitoshi; Mazurenko, Leonid; Matveeva, Tatyana; Obzhirov, Anatoly; Jin, Young Keun
Contributor
University of British Columbia. Department of Chemical and Biological Engineering; International Conference on Gas Hydrates (6th : 2008 : Vancouver, B.C.)
Date Issued
2008-07
Description
Mineralogical and isotopic analysis of authigenic carbonates from different gas hydrate-bearing seepage structures in the Derugin Basin (Sea of Okhotsk) are presented. The analysis showed the existence of four morphological types of carbonates, with all of them mainly of Mg-calcite.13C values of carbonates generally light owing to the inheritance of carbon from microbial methane. 13C-enriched samples at the VNIIOkeangeologia structure with 13C values of up to +9.3‰ represent carbonate precipitation due to methanogenesis. The calculated equilibrium 18O values of carbonates in general correspond to measured values.
Extent
312699 bytes
Subject
Gas hydrates; Authigenic carbonates
Genre
Conference Paper
Type
Text
File Format
application/pdf
Language
eng
Date Available
2017-01-24
Provider
Vancouver : University of British Columbia Library
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International
DOI
10.14288/1.0041015
URI
http://hdl.handle.net/2429/1173
Affiliation
Non UBC
Citation
Krylov, Alexey; Logvina, Elizaveta; Hachikubo, Akihiro; Minami, Hirotsugu; Nunokawa, Yutaka; Shoji, Hitoshi; Mazurenko, Leonid; Matveeva, Tatyana; Obzhirov, Anatoly; Jin, Young Keun. 2008. AUTHIGENIC CARBONATES RELATED TO GAS SEEPAGE STRUCTURES IN THE SEA OF OKHOTSK (NE OFFSHORE SAKHALIN): RESULTS FROM THE CHAOS PROJECT. Proceedings of the 6th International Conference on Gas Hydrates (ICGH 2008), Vancouver, British Columbia, CANADA, July 6-10, 2008.
Peer Review Status
Unreviewed
Copyright Holder
Krylov, Alexey
Rights URI
http://creativecommons.org/licenses/by-nc-nd/4.0/
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Attribution-NonCommercial-NoDerivatives 4.0 International