@article{oai:kumadai.repo.nii.ac.jp:00029869,
 author = {Miyabuchi, Yasuo and 星住, 英夫 and Hoshizumi, Hideo and Watanabe, Kazunori and 宮縁, 育夫 and 星住, 英夫 and 渡辺, 一徳},
 issue = {2},
 journal = {火山},
 month = {May},
 note = {application/pdf, 論文(Article), The stratigraphy and chronology of late-Pleistocene (after deposition of AT ash) tephra layers erupted from post-caldera central cones of Aso Volcano, SW Japan, are evaluated through study of the thick tephra sequence preserved mainly atop the phroclastic-flow plateau east of the caldera. Twenty andesite to basaltic-andesite scoria-fall deposits (YmS20-YmS1 in ascending order) and two pumice-fall deposits (NbP2 and NbP1) were identified as maker beds for the interval ca. 29-13 ka (calibrated ^14C age). The tephra layers were produced mostly by scoria and ash eruptions of Nakadake, the only active post-caldera central cone, and their bulk volumes calculated from isopach maps range from 0.01 to 0.9 km^3. The radiocarbon ages of buried soils just below individual tephra layers reveal that YmS20 to YmS15 were erupted at ca. 22-21 ka and YmS10 to YmS1 at ca. 18-16 ka. Total tephra volume during 29-13 ka is estimated at about 1.3 km^3 (DRE). Production of tephra was mainly concentrated in two periods : 22-21 ka (0.8 km^3) and 18-16 ka (0.5km^3)., https://www.jstage.jst.go.jp/article/kazan/49/2/49_KJ00002524723/_article/-char/ja/},
 pages = {51--64},
 title = {阿蘇火山における更新世末期、AT火山灰以降のテフラ層序},
 volume = {49},
 year = {2004},
 yomi = {ホシズミ, ヒデオ}
}