論文

査読有り
2016年3月

Age, source, and distribution of Holocene tephra in the southern Kurile Islands: Evaluation of Holocene eruptive activities in the southern Kurile arc

QUATERNARY INTERNATIONAL
  • Nadezhda G. Razzhigaeva
  • ,
  • Akiko Matsumoto
  • ,
  • Mitsuhiro Nakagawa

397
開始ページ
63
終了ページ
78
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.quaint.2015.07.070
出版者・発行元
PERGAMON-ELSEVIER SCIENCE LTD

We identified 32 distinct layers of Holocene tephra in the southern Kurile Islands on the basis of petrological features and C-14 ages of soils beneath or above the tephra layers. Three layers were derived from the volcanoes of Kunashir Island: one from Mendeleev volcano (ca. 2.6 cal ka) and two from Tyatya volcano (1420 cal. BP and AD 1973). Fourteen widely distributed silicic tephra layers were derived from four volcanoes in Hokkaido: Mashu, Rausudake, Tarumai, and Hokkaido-Komagatake. A widespread tephra was derived from Baitoushan volcano, between China and North Korea. Fourteen tephra layers have unknown source volcanoes: 1 silicic medium-K ash, 2 silicic low-K ash, and 11 scoria/pumice ash layers. Except for the medium-K ash, these tephra are presumed to be derived from the volcanoes in the Kurile Islands. It has been known that caldera-forming eruptions occurred at Mashu (Hokkaido) and Lvinaya Past (Iturup) volcanoes in the early Holocene (ca. 12-8 ka). However, we did not find any tephra from Lvinaya Past volcano. Our results provide evidence of the temporal and spatial evolution of eruptive activity in the southern Kurile arc. We conclude that the level of the eruptive activity in the southern Kurile Islands (especially Kunashir Island) has been lower than that in eastern Hokkaido since 8 ka. The islands produced mainly vulcanian and strombolian eruptions of mafic magma, whereas eastern Hokkaido produced plinian eruptions of silicic magma repeated at intervals of 1000-2000 years. (C) 2015 Elsevier Ltd and INQUA. All rights reserved.

Web of Science ® 被引用回数 : 11

リンク情報
DOI
https://doi.org/10.1016/j.quaint.2015.07.070
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000372959900007&DestApp=WOS_CPL
URL
https://www.sciencedirect.com/science/article/pii/S1040618215007922?via%3Dihub

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