Age of Initial Submarine Volcanism in the Paleo-Tsushima Basin and Implications for Submarine Volcanism in the Opening Stage of the Japan Sea in Northern Kyushu

The Tsushima Lapilli Tuff, the thickest tuff in the Taishu Group on Tsushima Island, underwent a thermal event after deposition, and has not previously yielded a reliable age because various ages have been reported. This study clarifies the eruption age and thermal history of the Tsushima Lapilli Tuff based on fission-track (FT) and U–Pb dating of zircon grains using laser ablation inductively coupled plasma mass spectrometry (ICP-LA-MS) and evaluates submarine volcanism during deposition of the Taishu Group in the southwestern Japan Sea, as well as volcanism change on Tsushima Island. This study revealed that thermal events caused rejuvenation in some single-grain FT ages after deposition in the Tsushima Group, and that the eruption age of the Tsushima Lapilli Tuff was 16.2 ± 0.7 Ma; the age of the largest submarine volcanism event in the Taishu Group in Tsushima Island was thus determined. On the basis of our previous studies, this age and tectonism strongly indicate that felsic submarine volcanism occurred between 18 and 16 Ma, accompanied by rapid subsidence, and the volcanism changed from felsic volcanism originating from melting of old continental crust by asthenospheric upwelling to mafic volcanism originating from small-scale lithospheric mantle upwelling from 13.6 Ma onward.

[1]  T. Yamanaka,et al.  Origin and water depth of a newly identified seep carbonate and paleoecology of Bathymodiolus in the Miocene Taishu Group, southwestern Japan , 2020 .

[2]  T. Hirata,et al.  Zircon fission‐track and U–Pb double dating using femtosecond laser ablation–inductively coupled plasma–mass spectrometry: A technical note , 2020, Island Arc.

[3]  K. Kano.  Stratigraphic framework of the Green Tuff successions in Japan with reference to the associated geologic events , 2018, The Journal of the Geological Society of Japan.

[4]  T. Hirata,et al.  Standardless fission-track ages of the IUGS age standards , 2018 .

[5]  R. Shinjo,et al.  Breakdown of residual zircon in the Izu arc subducting slab during backarc rifting , 2018 .

[6]  Koichiro Watanabe,et al.  U–Pb and fission‐track dating of a submarine pyroclastic rock from southwest Japan , 2017 .

[7]  Koichiro Watanabe,et al.  Age of the Taishu Group, southwestern Japan, and implications for the origin and evolution of the Japan Sea , 2014 .

[8]  A. Tamura,et al.  Zeta equivalent fission‐track dating using LA‐ICP‐MS and examples with simultaneous U–Pb dating , 2013 .

[9]  T. Hirata,et al.  An inter‐laboratory evaluation of OD‐3 zircon for use as a secondary U–Pb dating standard , 2013 .

[10]  K. Uto,et al.  Pleistocene intraplate magmatism in the Goto Islands, SW Japan: Implications for mantle source evolution and regional geodynamics , 2013 .

[11]  Takeyoshi Yoshida,et al.  Chemical and Isotopic Characteristics of the Kuroko‐Forming Volcanism , 2012 .

[12]  S. Nohda.  Formation of the Japan Sea basin: Reassessment from Ar–Ar ages and Nd–Sr isotopic data of basement basalts of the Japan Sea and adjacent regions , 2009 .

[13]  T. Danhara,et al.  Determination of zeta values for fission-track age calibration using thermal neutron irradiation at the JRR-3 reactor of JAEA, Japan , 2009 .

[14]  K. Uto,et al.  Stratigraphic review of Eocene to Oligocene successions along the eastern Japan Sea: Implication for early opening of the Japan Sea , 2007 .

[15]  K. Uto,et al.  Cenozoic lithospheric extension induced magmatism in Southwest Japan , 2004 .

[16]  Y. Yanagisawa,et al.  An unconformity in the early Miocene syn‐rifting succession, northern Noto Peninsula, Japan: Evidence for short‐term uplifting precedent to the rapid opening of the Japan Sea , 2002 .

[17]  N. Shimada,et al.  Thermochronology for the Granitic Pluton Related to Lead‐Zinc Mineralization in Tsushima, Japan , 2001 .

[18]  S. Bowring,et al.  U-Pb zircon and titanite systematics of the Fish Canyon Tuff: an assessment of high-precision U-Pb geochronology and its application to young volcanic rocks , 2001 .

[19]  Ian S. Williams,et al.  Pb, U and Th diffusion in natural zircon , 1997, Nature.

[20]  W. Griffin,et al.  THREE NATURAL ZIRCON STANDARDS FOR U‐TH‐PB, LU‐HF, TRACE ELEMENT AND REE ANALYSES , 1995 .

[21]  T. Sakai,et al.  Sedimentay facies and environments of the Miocene back-arc basin sequence, Katsumoto Formation in Iki Island, off Kyushu , 1993 .

[22]  H. Nishi,et al.  GEOLOGIC AGES OF THE TAISHU GROUP AND THE KATSUMOTO FORMATION IN THE TSUSHIMA AND IKI ISLANDS, OFF NORTHWEST KYUSHU ON THE BASIS OF PLANKTONIC FORAMINIFERS , 1990 .

[23]  Anthony J. Hurford,et al.  Standardization of fission track dating calibration: Recommendation by the Fission Track Working Group of the I.U.G.S. Subcommission on Geochronology , 1990 .

[24]  Y. Hamano,et al.  Paleomagnetism of Tertiary rocks from the OGA Peninsula and the rotation of northeast Japan , 1988 .

[25]  T. Matsuda,et al.  Paleomagnetic evidence for the Miocene counter-clockwise rotation of Northeast Japan—rifting process of the Japan arc , 1985 .

[26]  T. Matsuda,et al.  Paleomagnetic evidence for the clockwise rotation of Southwest Japan , 1983 .

[27]  K. Huzioka.  Geology of the Green Tuff Region in Japan , 1963 .

[28]  S. Kanno.  264. TERTIARY MOLLUSCA FROM TAISHU MINE, TSUSHIMA, NAGASAKI PREFECTURE, JAPAN , 1955 .

[29]  T. Sakuyama.  Cenozoic Tectoncis and Volcanism in Northern Kyushu: Significance for Studies on Tectonic Magma Provinces , 2010 .

[30]  Yuya Yamaguchi,et al.  Incipient slaty cleavage in the Taisyu Group of north Tsushima Islands, southwest Japan , 2007 .

[31]  Yuya Yamaguchi,et al.  Sedimentological history of Tertiary slope facies in the northern area of the Tsushima Islands, Japan , 2007 .

[32]  治孝 酒井,et al.  Paleogene Mogi and Ugetsuiwa Subaqueous Pyroclastic Flow Deposits in the Tsushima Islands, Northwestern off Kyushu , 1998 .

[33]  G. Laslett,et al.  Revised annealing kinetics of fission tracks in zircon and geological implications , 1998 .