岡山大学 地球科学研究報告
Published by Okayama University Earth Science Reports Editorial Committee

津山盆地東部に分布する中新統勝田層群の堆積環境

山崎 良 Kiso-jiban Consultants Co., Ltd.
鈴木 茂之 Department of Earth Sciences, Faculty of Science, Okayama University
抄録
The Miocene Katauta Group of the Syohoku-cho area is subdivides into 6 members ; The Uetsuki Conglomerate Member, Nara Sandy Mudstone Member, Tai Gravelly Sandstone Member, Takatori Conglomerate Member, Ayabe Mudstone Member and Maruyama Mutstone Member from bottom to top. The unconformity between Miocene deposits and basement rocks in this area was traced to obtain geometry of the Miocene basin. Contour maps of the bases of the Miocene Yoshino Formation and Takakura Formation indicate paleo-topography. The obtained topography demonstrates a valley, which flowed to north-west, and a few islands and bays. It indicates that these Miocene successuions were deposited in the topography which resemble to the present Seto Inland.
キーワード
Katsuta Group
Tsuyama Basin
Miocene
geometry of basin
paleoenvironmental chage
ISSN
1340-7414
NCID
AN10506284
NAID