Terrestrial n-alkanes and their carbon isotope records from the Hanon paleo-maar sediment, Jeju Island, Korea: Implications for paleoclimate and paleovegetation over the last 35 kyrs SCIE SCOPUS
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hyun, Sangmin | - |
dc.contributor.author | Shin, Kyung-Hoon | - |
dc.contributor.author | Lee, Suk-Chang | - |
dc.contributor.author | Chang, Se Won | - |
dc.contributor.author | Nam, Seung-Il | - |
dc.date.accessioned | 2020-04-16T10:40:03Z | - |
dc.date.available | 2020-04-16T10:40:03Z | - |
dc.date.created | 2020-01-28 | - |
dc.date.issued | 2017-06 | - |
dc.identifier.issn | 1040-6182 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/1214 | - |
dc.description.abstract | The carbon isotope of total carbon (delta C-13(org)), long-chain n-alkanes, and their compound-specific carbon isotope ratios (delta C-13(ALK)) were investigated in the Hanon paleo-maar sediment, Jeju Island of Korea to understand paleoclimate variabilities and their paleovegetation linkages. Based on the organic geochemical data (TOC (%), TN (%), and their delta C-13(org) and delta N-15), the core column stratigraphy was divided into three units, namely from the bottom to 14.5 ka (Unit I), from 14.5 ka to 3.01<a (Unit II), and from 3.0 ka to the core top (Unit III), respectively. In particular, delta C-13(org) showed marked fluctuation from -17.31%o to -28.68%o, suggesting different organic carbon sources. A relatively narrow range of variation in delta C-13(org) was observed in Unit III, and drastic changes in delta C-13(org) were observed from Unit I to Unit II. This may indicate a predominance of C-4 plants in Unit I, and drastic changes from terrestrial C-4 to C-3 in Unit II and predominance of C-3 plants in Unit III. The distributions of n-alkane were characterized by a continuous predominance of odd-numbered n-alkanes, particularly nC(29) and nC(31), and by high fluctuation of the total n-alkanes concentration. The average chain length (ACL), carbon preferences index (CPI), and paleoplant proxy (Paq) showed high fluctuation and glacial-interglacial variations with distinctive a high and low ratio at about 9.2 ka, corresponding to the switching points of delta C-13(org) and a high concentration of nalkane distribution. Individual n-alkane odd-numbered isotopes of delta C-13(Auc) ranged between -11.80%o in delta C-13n(21) and -34.93%o in delta C-13n(31), suggesting different sources of n-alkanes. The distribution of n-alkanes and their individual delta C-13(Auc), in particular delta C-13n(21), support paleovegetation changes, and their time dependent variations matched well with glacial-interglacial paleoclimate variations. Therefore, organic geochemical proxies recorded in Hanon paleo-maar sediment reflects paleoclimate variabilities as well as paleovegetation changes for the last 35 kyr in Jeju Island, Korea. (C) 2016 Elsevier Ltd and INQUA. All rights reserved. | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Terrestrial n-alkanes and their carbon isotope records from the Hanon paleo-maar sediment, Jeju Island, Korea: Implications for paleoclimate and paleovegetation over the last 35 kyrs | - |
dc.type | Article | - |
dc.citation.endPage | 100 | - |
dc.citation.startPage | 89 | - |
dc.citation.title | QUATERNARY INTERNATIONAL | - |
dc.citation.volume | 441 | - |
dc.contributor.alternativeName | 현상민 | - |
dc.identifier.bibliographicCitation | QUATERNARY INTERNATIONAL, v.441, pp.89 - 100 | - |
dc.identifier.doi | 10.1016/j.quaint.2016.08.047 | - |
dc.identifier.scopusid | 2-s2.0-84998533008 | - |
dc.identifier.wosid | 000404696200008 | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordPlus | EAST-ASIAN MONSOON | - |
dc.subject.keywordPlus | ABRUPT CLIMATE-CHANGE | - |
dc.subject.keywordPlus | EAST/JAPAN SEA | - |
dc.subject.keywordPlus | LATE PLEISTOCENE | - |
dc.subject.keywordPlus | ORGANIC MATERIAL | - |
dc.subject.keywordPlus | HIGH-RESOLUTION | - |
dc.subject.keywordPlus | MARINE-SEDIMENTS | - |
dc.subject.keywordPlus | EARLY HOLOCENE | - |
dc.subject.keywordPlus | LOESS PLATEAU | - |
dc.subject.keywordPlus | CHINESE LOESS | - |
dc.subject.keywordAuthor | Hanon paleo-maar | - |
dc.subject.keywordAuthor | n-alkane | - |
dc.subject.keywordAuthor | Carbon isotope | - |
dc.subject.keywordAuthor | Paleoclimate | - |
dc.subject.keywordAuthor | Paleovegetation | - |
dc.relation.journalWebOfScienceCategory | Geography, Physical | - |
dc.relation.journalWebOfScienceCategory | Geosciences, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physical Geography | - |
dc.relation.journalResearchArea | Geology | - |