JaLCDOI 10.18926/ESR/13875
Title Alternative Depositional environments of the Katsuta Group, eastern Tsuyama Basin, Southwest Japan
FullText URL earth_science_reports_010_1_23.pdf
Author Yamasaki, Ryo| Suzuki, Shigeyuki|
Abstract 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.
Keywords Katsuta Group Tsuyama Basin Miocene geometry of basin paleoenvironmental chage
Publication Title Okayama University Earth Science Report
Published Date 2003-12-20
Volume volume10
Issue issue1
Start Page 23
End Page 31
ISSN 1340-7414
language 日本語
Copyright Holders 岡山大学地球科学研究報告編集委員会
File Version publisher
NAID 120002310475