Multi-chronology of volcanic rocks leading to reliable age estimates of volcanic activity: an example from the Setouchi volcanic rocks on Shodo-Shima Island, SW Japan
Multi-chronology of volcanic rocks leading to reliable age estimates of volcanic activity: an example from the Setouchi volcanic rocks on Shodo-Shima Island, SW Japan
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火山岩的多年代学可对火山活动进行可靠的年龄估计:以日本西南部小豆岛濑户内火山岩为例
DOI:
10.5575/geosoc.116.661
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
D. Dunkley
中科院分区:
文献类型:
--
作者:
Y. Tatsumi;K. Tani;Keiko Sato;T. Danhara;H. Hyodo;H. Kawabata;T. Hanyu;D. Dunkley
Four samples of the Setouchi volcanic rocks from two different Miocene formations on Shodo-Shima Island, SW Japan, were dated multi-chronologically using whole-rock and mineral K-Ar and Ar-Ar, zircon fission-track, and zircon U-Pb techniques, in order to better estimate their eruption ages. Statistical and chronological analyses of the results suggest that the lower and upper formations formed at 14 . 3 - 14 . 4 Ma and 13 . 1 - 13 . 4 Ma, respectively, which is consistent with geological relationships. U-Pb dating tends to show a reliable eruption age for analyses of magmatic zircon, and fission-track dating is suitable for determining the eruption age if the sample is largely free of thermal alteration. A careful examination of the contribution of old basement rocks and alteration is required to constrain the eruption age based on Ar-Ar plateau and K-Ar age data. The ubiquitous occurrence of xenocrystic zircon, even in the least-differentiated high-Mg andesite, indicates the involvement of pre-existing crust in the magma. The U-Pb ages of these zircons reveal the involvement of Late Cretaceous granitic basement, as well as older components.
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DOI:
--
发表时间:
2003
期刊:
Journal of Asian Earth Sciences 21
影响因子:
--
作者:
Sakashima;T.
通讯作者:
T.
影响因子:
5.8
作者:
K. Tani;D. Dunkley;J. Kimura;R. Wysoczanski;Kunimi Yamada;Y. Tatsumi
通讯作者:
K. Tani;D. Dunkley;J. Kimura;R. Wysoczanski;Kunimi Yamada;Y. Tatsumi
影响因子:
3.9
作者:
Black, LP;Kamo, SL;Foudoulis, C
通讯作者:
Foudoulis, C
DOI:
--
发表时间:
2004
期刊:
Journal of the Mass Spectrometry Society of Japan 52・4
影响因子:
--
作者:
Ebisawa;N.;H.Sumino;R.Okazaki;Y.Takigami;N.Hirano;K.Nagao;Kaneoka
通讯作者:
Kaneoka