Paleogene talus deposits, Okayama City, Southwest Japan

• Suzuki Shigeyuki

抄録

In eastern Chugoku area, Paleogene deposits have not been recognized until fission-track dating of so called "Mountain Gravels" was carried out (Suzuki et al. 1995). Two sedimentation events in Paleogene time (27Ma and 34-35Ma) are inferred by the F-T dating Major lithology of the Paleogene deposits in the study area is graved which is mainly composed of subrounded to rounded cobbles. The "Mountain Gravels" were previously thought to be lower Quaternary deposits. The "Mountain Gravels" is associsted with coal bearing mud, sand, gravel and breccia deposits. The breccia deposits is distributed sporadically between the "Mountain Gravels" and basement rocks. The deposits are mainly composed of poorly sorted breccia and associated granitic sands. It is inferred that the breccia deposits are talus deposits.

収録刊行物

• Okayama University Earth Science Report

  Okayama University Earth Science Report 3 (1), 17-24, 1996-09-20

  岡山大学理学部地球科学教室

キーワード

• Paleogene
• breccia
• talus deposits
• fission-track dating

詳細情報

• CRID: 1390853649497967360
• NII論文ID: 120002310338
• NII書誌ID: AN10506284
• ISSN: 13407414
• DOI: 10.18926/esr/13928
• Web Site: https://ousar.lib.okayama-u.ac.jp/13928
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • CiNii Articles