In the Kamikita Plain of the "mid-lowland" of the northeast Japan arc, the marine Pleistocene sediment "Noheji formation" consists of the basements under marine terraces as revealed by previous studies. The Noheji formation is rather thick as if this formation had accumulated in a subsiding basin. The geomorphologic and geological structures, however, reveal that the Noheji formation is an assemblage of marine-terrace deposits newly recognized in the Kamikita Plain. Because marine terraces and their deposits are generally formed by the glacial eustacy in uplifted regions, the Kamikita Plain has been uplifting on and after the accumulation of the Noheji formation. This formation didn't occur in the subsiding region, but built up with the glacial eustacy in the uplifted Kamikita Plain.
雑誌名
Geographical Reports of Tokyo Metropolitan University
号
36
ページ
17 - 28
発行年
2001
ISSN
03868710
書誌レコードID
AA00200173
著者版フラグ
publisher
出版者
Department of Geography, Tokyo Metropolitan University
Quaternary tectonic movement deduced from marine terraces and noheji formation in the kamikita plain, shimokita peninsula, northeast japan
20005-36-003.pdf
(527.66KB)
