2024-03-28T10:14:32Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00003213
2022-12-15T03:36:23Z
453:454
503:504:505
秋田県男鹿半島の北浦層に挟在するKm3 テフラ層と大峰-SK110テフラとの対比
秋田県男鹿半島の北浦層に挟在するKm3 テフラ層と大峰-SK110テフラとの対比
Correlation of the Km3 tephra layer from the Kitaura Formation, Oga Peninsula, Akita Prefecture, Japan, with the Om-SK110 Tephra
長橋, 良隆
片岡, 香子
吉川, 周作
佐藤, 時幸
Km3 tephra layer
Om-SK110 Tephra
Lower Pleistocene
correlation
wide-spread tephra
calcareous nannofossil datum plane 11
Akita Prefecture
Stratigraphic horizon of the Km3 tephra layer interealated in the lower part of the Kitaura Formation, Akita Prefecture, Japan, is located above the calcareous nannofossil datum plane 11 (1.65Ma). The Km3 tephra layer, approximately 1m thick, is mainly composed of volcanic glass shards with minor amounts of plagioclase, quartz and biotite. On the basis of the stratigraphic position, lithofacies, petrographic characteristics and chemical composition of glass shards, the Km3 tephra layer is correlated to the OM-SK110 Tephra (1.65Ma). By this result, it is clarified that the Km3 tephra layer was transported more than 450km away from its probable volcanic center situated in the Hida Mountain Ranges, central Honshu Island.
日本地質学会
2002-11
jpn
journal article
http://hdl.handle.net/10191/17815
https://niigata-u.repo.nii.ac.jp/records/3213
AN00141768
00167630
地質学雑誌
地質学雑誌
108
11
761
764
https://niigata-u.repo.nii.ac.jp/record/3213/files/ZC_108(11)_761-764.pdf
application/pdf
543.7 kB
2019-07-30