Methane-derived authigenic carbonates from the Ulleung basin sediments, East Sea of Korea SCIE SCOPUS

DC Field Value Language
dc.contributor.author Lim, Dhongil -
dc.contributor.author Choi, Jinyong -
dc.contributor.author Xu, Zhaokai -
dc.contributor.author Kim, Moonkoo -
dc.contributor.author Choi, Donglim -
dc.contributor.author Jung, Hoisoo -
dc.contributor.author Lee, Panmook -
dc.date.accessioned 2020-04-20T09:40:29Z -
dc.date.available 2020-04-20T09:40:29Z -
dc.date.created 2020-01-28 -
dc.date.issued 2009-06 -
dc.identifier.issn 0278-4343 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/4280 -
dc.description.abstract Authigenic carbonates were sampled in methane-enriched piston core sediments collected from gas venting sites on the western continental slope of the Ulleung Basin, East Sea of Korea. Multidisciplinary investigations on these carbonates, including the scanning electronic microscope (SEM) observations and mineralogical-geochemical compositions, were carried out to identify the carbon and oxygen sources and the forming mechanism of these carbonates. The authigenic carbonates from the study area correspond to semi-consolidated, compact concretions or nodules ranging from 2 to 9 cm in size. X-ray diffraction and electron microprobe analyses showed that most of the sampled carbonate concretions were composed of almost purely authigenic high-Mg calcite (10.7-14.3 mol% MgCO(3)). Characteristically, microbial structures such as filaments and rods, which were probably associated with the authigenic minerals, were abundantly observed within the carbonate matrix. The carbonates were strongly depleted in delta(13)C (-33.85 parts per thousand to -39.53 parts per thousand Peedee Belemnite (PDB)) and were enriched in delta(18)O (5.16-5.60 parts per thousand PDB), indicating that the primary source of carbon is mainly derived from the anaerobic oxidation of methane. Such methane probably originated from the destabilization of the underlying gas hydrates as strongly supporting from the enriched (18)O levels. Furthermore, the strongly depleted delta(13)C values (-60.7 parts per thousand to -61.6 parts per thousand PDB) of the sediment void gases demonstrate that the majority of the gas venting at the Ulleung Basin is microbial methane by CO(2) reduction. This study provides another example for the formation mechanism of methane-derived authigenic carbonates associated with gas-hydrate decomposition in gas-seeping pockmark environments. (c) 2009 Elsevier Ltd. All rights reserved. -
dc.description.uri 1 -
dc.language English -
dc.publisher PERGAMON-ELSEVIER SCIENCE LTD -
dc.title Methane-derived authigenic carbonates from the Ulleung basin sediments, East Sea of Korea -
dc.type Article -
dc.citation.endPage 1596 -
dc.citation.startPage 1588 -
dc.citation.title CONTINENTAL SHELF RESEARCH -
dc.citation.volume 29 -
dc.citation.number 13 -
dc.contributor.alternativeName 임동일 -
dc.contributor.alternativeName 김문구 -
dc.contributor.alternativeName 최동림 -
dc.contributor.alternativeName 정회수 -
dc.identifier.bibliographicCitation CONTINENTAL SHELF RESEARCH, v.29, no.13, pp.1588 - 1596 -
dc.identifier.doi 10.1016/j.csr.2009.04.013 -
dc.identifier.scopusid 2-s2.0-67549128805 -
dc.identifier.wosid 000268434300004 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.subject.keywordPlus SOUTH CHINA SEA -
dc.subject.keywordPlus GULF-OF-MEXICO -
dc.subject.keywordPlus GAS HYDRATE -
dc.subject.keywordPlus SULFATE REDUCTION -
dc.subject.keywordPlus SEEP CARBONATES -
dc.subject.keywordPlus BLACK-SEA -
dc.subject.keywordPlus HYDROCARBON SEEPS -
dc.subject.keywordPlus CONTINENTAL-SLOPE -
dc.subject.keywordPlus MG CALCITE -
dc.subject.keywordPlus PRECIPITATION -
dc.subject.keywordAuthor Authigenic carbonates -
dc.subject.keywordAuthor Methane seep environments -
dc.subject.keywordAuthor Gas hydrate -
dc.subject.keywordAuthor East Sea (Japan Sea) -
dc.relation.journalWebOfScienceCategory Oceanography -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Oceanography -
Appears in Collections:
South Sea Research Institute > Library of Marine Samples > 1. Journal Articles
Sea Power Enhancement Research Division > Marine Domain & Security Research Department > 1. Journal Articles
South Sea Research Institute > Risk Assessment Research Center > 1. Journal Articles
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