Age of the SKP-I and SKP-II tephras from the southern East Sea/Japan Sea: Implications for interstadial events recorded in sediment from marine isotope stages 3 and 4 SCIE SCOPUS

DC Field Value Language
dc.contributor.author Chun, J.-H. -
dc.contributor.author Cheong, D. -
dc.contributor.author Ikehara, K. -
dc.contributor.author Han, S.-J. -
dc.date.accessioned 2020-04-20T11:55:36Z -
dc.date.available 2020-04-20T11:55:36Z -
dc.date.created 2020-01-28 -
dc.date.issued 2007-04 -
dc.identifier.issn 0031-0182 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/4712 -
dc.description.abstract The ages of two newly identified tephras in marine oxygen isotope stages (MIS) 3 and 4 from the southern East Sea/Japan Sea (ES/JS) have been determined. Analysis of chemical composition, grain-size distribution, sediment texture, and pumice micromorphology of material from 24 marine sediment cores was combined with a high-resolution age model established for core MD01-2407. The marine sedimentary record of the ES/JS is characterized by a drastic, millennium-scale variation in paleoceanographic conditions that is closely linked to Dansgaard-Oeschger (D-O) events. The chemical composition of the two tephras, which are stratigraphically located between previously dated AT (29.24 ka) and Aso-4 (88 ka) tephras, varies from phonolitic to trachytic (57.11-62.87 wt% SiO2 with 5.03-6.81 wt% K2O and 6.32-9.87 wt% Na2O). They exhibit a conspicuously bimodal grain-size distribution, and have randomly oriented vesicles with thick walls. The dispersal patterns of these tephras differ markedly from that of the U-Oki tephra, which is originated from a subaerial eruption on Ulleung Island. The two newly identified tephras, named SKP-I and SKP-II, reach their maximum thickness and grain-size at a location near the South Korea Plateau (SKP). An age model for a core from the Oki Ridge (MD01-2407) yields eruptive ages of about 40-41 ka for the SKP-I tephra and about 60-61 ka for the SKP-II tephra. A comparison of sediment lightness (L*) with GISP2 oxygen isotope data suggests that the SKP-I tephra is stratigraphically between D-O Interstadial (IS) 9 and 10, and the SKP-II tephra is between D-O IS 17 and 18. The SKP-I and SKP-II tephras are equivalent to the U-Ym tephra described by Arai et al. [Arai, F., Oba, T., Kitazato, H., Horibe, Y., Machida, H., 1981. Late Quaternary tephrochronology and paleo-oceanography of the sediments of the Japan Sea. Quat. Res. (Daiyonki-kenkyu) 20, 209-230 (in Japanese, with English Abstr.)] and that described by Ikehara et al. [Ikehara, K., Kikkawa, K., Chun, J.-H., 2004. Origin and correlation of three tephras that erupted during oxygen isotope stage 3 found in cores from the Yamato Basin, central Japan Sea. Quat. Res. (Daiyonki-kenkyu) 43, 201-212 (in Japanese, with English Abstr.)], respectively. They not only provide marker horizons within the stratigraphic interval corresponding to MIS 3 and 4 but also can be useful to identify D-O events for marine cores from the southern part of the ES/JS. © 2007 Elsevier B.V. All rights reserved. -
dc.description.uri 1 -
dc.language English -
dc.publisher Elsevier BV -
dc.title Age of the SKP-I and SKP-II tephras from the southern East Sea/Japan Sea: Implications for interstadial events recorded in sediment from marine isotope stages 3 and 4 -
dc.type Article -
dc.citation.endPage 114 -
dc.citation.startPage 100 -
dc.citation.title Palaeogeography, Palaeoclimatology, Palaeoecology -
dc.citation.volume 247 -
dc.citation.number 1-2 -
dc.contributor.alternativeName 한상준 -
dc.identifier.bibliographicCitation Palaeogeography, Palaeoclimatology, Palaeoecology, v.247, no.1-2, pp.100 - 114 -
dc.identifier.doi 10.1016/j.palaeo.2006.11.024 -
dc.identifier.scopusid 2-s2.0-33947717264 -
dc.identifier.wosid 000246086100010 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.description.isOpenAccess N -
dc.subject.keywordPlus interstitial environment -
dc.subject.keywordPlus isotopic composition -
dc.subject.keywordPlus marine isotope stage -
dc.subject.keywordPlus marine sediment -
dc.subject.keywordPlus oxygen isotope -
dc.subject.keywordPlus paleoceanography -
dc.subject.keywordPlus sediment core -
dc.subject.keywordPlus tephra -
dc.subject.keywordPlus tephrochronology -
dc.subject.keywordPlus trachyte -
dc.subject.keywordPlus Asia -
dc.subject.keywordPlus Eurasia -
dc.subject.keywordPlus Far East -
dc.subject.keywordPlus Korea -
dc.subject.keywordPlus Oki Ridge -
dc.subject.keywordPlus Pacific Ocean -
dc.subject.keywordPlus Sea of Japan -
dc.subject.keywordPlus South Korea -
dc.subject.keywordPlus Ulleungdo -
dc.subject.keywordPlus chemical composition -
dc.subject.keywordPlus Dansgaard-Oeschger cycle -
dc.subject.keywordPlus interstadial -
dc.subject.keywordAuthor Dansgaard-Oeschger events -
dc.subject.keywordAuthor Marine oxygen isotope stages 3 and 4 -
dc.subject.keywordAuthor SKP-I and SKP-II tephras -
dc.subject.keywordAuthor South Korea Plateau -
dc.subject.keywordAuthor Southern East Sea/Japan Sea -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
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