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長崎火山周縁の化石湖の研究-1 : 長崎市北東部喜々津町で見出された茂木植物群を含む湖成層と長崎火山


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Title: 長崎火山周縁の化石湖の研究-1 : 長崎市北東部喜々津町で見出された茂木植物群を含む湖成層と長崎火山
Other Titles: On the Relation between the Fossil Lake Deposits containing the Mogi Flora found at Kikitsu, Northeast of Nagasaki City and Nagasaki Volcano.
Authors: 橘, 行一
Authors (alternative): Tachibana, Koichi
Issue Date: 28-Feb-1957
Publisher: 長崎大学学芸学部
Citation: 長崎大学学芸学部自然科学研究報告. vol.6, p.29-34; 1957
Abstract: The writer found a plant bed exposed along the eastern foot of the hills, immediately west of Kikitsu-machi, about 1Okm northeast of Nagasaki city. This plant bed succeeded by the two pyroxene andesite of the Nagasaki volcano uncomformably lies on the Palaeogene, consisting of the andesitic tuff and volcanic blocks of hornblende andesites and two pyroxene andesites, and it is correlated with the Mogi plant bed, carrying Betula cf. adstigmata Miki, Zelkova, Quercus Acer and Salix etc. These old lake deposits of Mogi and Kikitsu are considered to be formed by the erupitor of the Nagasaki volcano. In this papaer the writer geologically considered, on the relation between these lake deposits and the volcanic activity of the Nagasaki volcano. At Kajiki, the plant bed is intruded by the biotite hornblende andesite which is traceable southward passing Fujidana and Okoba to Mt. Gyosen. From this fact it is assumed that the age of the Nagasaki volcano is older than one of the Uki.
URI: http://hdl.handle.net/10069/33311
ISSN: 05471419
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:No. 6

Citable URI : http://hdl.handle.net/10069/33311

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