Remember Me
Or use your Academic/Social account:


Or use your Academic/Social account:


You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.


Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Publisher: University of Arizona
Languages: English
Types: Article
This article presents new radiocarbon ages for the lavas, pyroclastic flow, and lahar deposits that originated from the Fugendake and Mayuyama volcanoes of the Younger Unzen Volcano, SW Japan. Nine charcoal samples were collected from the lavas and pyroclastic flow deposits, and 17 soil samples from the underlying volcanic-related products. This data set, together with previously published ages (thermoluminescence, K-Ar, fission track, and 14C), yielded new information about the timing of Late Pleistocene eruptions and an improved understanding of the evolution of the Fugendake and Mayuyama volcanoes. Fugendake Volcano started to build within the scar of Myokendake around 29 cal ka BP, and its eruption products spread over the flank of Myokendake. The remarkable eruptions of Fugendake Volcano included the lava and pyroclastic flow deposits around 22, 17, 12, and 4.5 cal ka BP. Subsequent historical eruptions occurred in AD 1663, 1792, and 1991–1995. Developed on the eastern extension of Fugendake Volcano, Mayuyama Volcano was active during the building stage of Fugendake at 4.5 cal ka BP. This study also identified a pumice eruption at ~10 ka and 2 volcanic-related lahar deposits around 1.6 and 0.7 ka, which need to be addressed in future research.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Braitseva OA, Sulerzhitsky LD, Litasova SN, Melekestsev IV. 1993. Radiocarbon dating and tephrochronology in Kamchatka. Radiocarbon 35(3):463-76.
    • Bronk Ramsey C. 2009. Bayesian analysis of radiocarbon dates. Radiocarbon 51(1):337-60.
    • Danhara T, Iwano H, Hoshizumi H, Watanabe K. 1993. Fission track dating of very young zircon from the Unzen Volcano. Programe and Abstract of Volcanological Society of Japan 2:51. In Japanese.
    • Goto Y, Gouchi N, Matsuda I. 2011. Radiocarbon dating of the Minamidake debris-avalanche deposit, Shiretoko-iozan volcano, Eastern Hokkaido, Japan. Bulletin of the Volcanological Society of Japan 56: 161-7.
    • Hamnond AP, Goh KM, Tonkin PJ, Manning MR. 1991. Chemical pretreatments for improving the radiocarbon dates of peat and organic silts in a gley podzol environment: Grahams Terrace, North Westland. New Zealand Journal of Geology and Geophysics 34:181- 94.
    • Head MJ, Zhou W, Zhou M. 1989. Evaluation of 14C ages of organic fractions of paleosols from loess-paleosol sequences near Xian, China. Radiocarbon 31(3):680- 96.
    • Hoshizumi H, Uto K, Watanabe K. 1995. K-Ar age determination for Unzen volcano: volcanic history of Unzen volcano. Programe and Abstract of Volcanological Society of Japan 2:99. In Japanese.
    • Hoshizumi H, Uto K, Watanabe K. 1999. Geology and eruptive history of Unzen volcano, Shimabara Peninsula, Kyushu, SW Japan. Journal of Volcanology and Geothermal Research 89:81-94.
    • Kobayashi T, Kato W. 1986. Formation history of Unzen volcano. Programe and Abstract of Volcanological Society of Japan 2:77. In Japanese.
    • Kobayashi T, Nakada S. 1991. 14C ages of pyroclastic flow and avalanche deposits and the history of Unzen volcano. Programe and Abstract of Volcanological Society of Japan 2:140. In Japanese.
    • Machida H, Arai F. 1983. Extensive ash falls in and around the Sea of Japan from large late Quaternary eruptions. Journal of Volcanology and Geothermal Research 18:151-64.
    • Martin CW, Johnson WC. 1995. Variation in radiocarbon ages of soil organic matter fractions from late Quaternary buried soils. Quaternary Research 43(2): 232-7.
    • Madeira J, Monge Soares AM, Brum Da Silveira A, Serralheiro A. 1997. Radiocarbon dating recent volcanic activity on Faial Island (Azores). Radiocarbon 37(2): 139-48.
    • Moriyasu M, Okuno M, Takashima I, Nagaoka S, Sakaguchi K, Aizawa J. 2008. Thermoluminescence ages for the Furue, Kureishibaru and Yuegawa pyroclastic flow deposits in the Younger Unzen Volcano, SW Japan. Fukuoka University Science Report. p 53-62. In Japanese with English abstract.
    • Okuno M. 2002. Chronology of tephra layers in Southern Kyushu, SW Japan, for the last 30,000 Years. Quaternary Research 41:225-36. In Japanese with English abstract.
    • Okuno M, Nakamura T. 2003. Radiocarbon dating of tephra layers: recent progress in Japan. Quaternary International 105(1):49-56.
    • Okuno M, Nakamura T, Moriwaki H, Kobayashi T. 1997. AMS radiocarbon dating of the Sakurajima tephra group, Southern Kyushu Japan. Nuclear Instruments and Methods in Physical Research B 123(1-4):470-4.
    • Okuno M, Nakamura T, Kobayashi T. 1998. AMS 14C dating of historic eruptions of the Kirishima, Sakurajima and Kaimondake volcanoes, Southern Kyushu, Japan. Radiocarbon 40(2):825-32.
    • Ono K, Watanabe K, Itaya T, Hori S, Hoshizumi H, Hiyashi H, Otsudsuki H. 1992. Geology and K-Ar age of Unzen Volcano (preliminary report). Programe and Abstract of Volcanological Society of Japan 2:1. In Japanese.
    • Orlova LA, Panychev VA. 1993. The reliability of radiocarbon dating buried soils. Radiocarbon 35(3): 369-77.
    • Ozeki N, Okuno M, Kobayashi T. 2005. Growth history of Mayuyama, Unzen Volcano, Kyushu, southwest Japan. Bulletin of the Volcanological Society of Japan 50:441-54. In Japanese.
    • Reimer PJ, Baillie MGL, Bard E, Bayliss A, Beck JW, Blackwell PG, Bronk Ramsey C, Buck CE, Burr GS, Edwards RL, Friedrich M, Grootes PM, Guilderson TP, Hajdas I, Heaton T, Hogg AG, Hughen KA, Kaiser KF, Kromer B, McCormac FG, Manning SW, Reimer RW, Richards DA, Southon JR, Talamo S, Turney CSM, van der Plicht J, Weyhenmeyer CE. 2009. IntCal09 and Marine09 radiocarbon age calibration curves, 0-50,000 years cal BP. Radiocarbon 51(4): 1111-50.
    • Scharpenseel HW. 1979. Soil fraction dating. In: Radiocarbon dating. In Berger R, Suess H, editors. Proceedings of the 9th International Radiocarbon Conference. Berkeley: University of California Press. p 277-83.
    • Shimao T, Takashima I, Watanabe K, Izawa E. 1999. Verification of errors and reliability of thermoluminescence age for volcanic rocks -Precise beta-ray correction age of pyroclastic flow deposits of Unzen volcano, SW Japan. Journal of Mineralogy, Petrology and Economic Geology 94(4):109-19. In Japanese with English abstract.
    • Takashima I, Watanabe K. 1994. Thermoluminescence age determination of lava flows/domes and collapsed materials at Unzen volcano, SW Japan. Bulletin of the Volcanological Society of Japan 39:1-12.
    • Watanabe K, Hoshizumi H. 1995. Geological map of Unzen volcano (1:25,000). Geological map of volcanoes 8, Geological Survey of Japan. In Japanese with English abstract.
    • Watanabe K, Hoshizumi H, Itaya T. 1993. K-Ar ages of Unzen Volcano in Kyusyu, Japan with some aspects of geology of Mayuyama. The Memoirs of the Faculty of Education, Kumamoto University 42:35-41.
    • Xu S. Zheng G. 2003. Variations in radiocarbon ages of various organic fractions in core sediments from Erhai Lake, SW China. Geochemical Journal 37(1):135-44.
    • Xu S, Hoshizumi H, Ochiai Y, Aoki H, Uto K. 2004. 14C dating of soil samples from the Unzen volcano scientific drilling boreholes. Nuclear Instruments and Methods in Physics Research B 223-224:560-7.
    • Yamagata T, Takashima I, Watanabe K, Izawa E. 2004. TL dating of new lava domes in Unzen volcano-activities history restoration toward the younger lava dome than 20,000 years. Bulletin of the Volcanological Society of Japan 49:73-81. In Japanese with English abstract.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article