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Authigenic carbonates related to gas seepage structures in the Sea of Okhotsk (NE offshore Sakhalin): Results from the Chaos Project

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.

Identiferoai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:BVAU.2429/1173
Date07 1900
CreatorsKrylov, Alexey, Logvina, Elizaveta, Hachikubo, Akihiro, Minami, Hirotsugu, Nunokawa, Yutaka, Shoji, Hitoshi, Mazurenko, Leonid, Matveeva, Tatyana, Obzhirov, Anatoly, Jin, Young Keun
Source SetsLibrary and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada
LanguageEnglish
Detected LanguageEnglish
Typetext
RightsKrylov, Alexey

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