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CO-OPERATIVE STUDY OF TERTIARY SILICEOUS SHALE FORMATIONS

Research Project

Project/Area Number 60303010
Research Category

Grant-in-Aid for Co-operative Research (A)

Allocation TypeSingle-year Grants
Research Field Stratigraphy/Paleontology
Research InstitutionUNIVERSITY OF TOKYO

Principal Investigator

IIJIMA AZUMA  GEOLOGICAL INSTITUTE, FACULTY OF SCIENCE, UNIVERSITY OF TOKYO, 理学部, 教授 (90011501)

Co-Investigator(Kenkyū-buntansha) 青柳 宏一  石油資源開発(株), 技術研究所, 次長
TADA RYUJI  FACULTY OF SCIENCE, UNIVERSITY OF TOKYO, 理学部, 助手 (30143366)
OKADA HISATAKE  FACULTY OF SCIENCE, YAMAGATA UNIVERSITY, 理学部, 助教授 (80111334)
MATOBA YASUMOCHI  FACULTY OF MINING, AKITA UNIVERSITY, 鉱山学部, 教授 (30006663)
TAKAYANAGI YOKICHI  FACULTY OF SCIENCE, TOHOKU UNIVERSITY, 理学部, 教授 (70004299)
AOYAGI KOICHI  TECHNOLOGICAL INSTITUTE, JAPAN PETROLEUM EXPLORATION COMPANY
西村 年晴  兵庫教育大学, 学校教育学部, 助教授 (00011750)
相田 吉昭  秋田大学, 鉱山学部, 講師 (90167768)
丸山 俊明  東北大学, 理学部, 助手 (70165950)
佐藤 誠司  北海道大学, 理学部, 講師 (30000813)
Project Period (FY) 1985 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 1987: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1986: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1985: ¥3,200,000 (Direct Cost: ¥3,200,000)
KeywordsNeogene siliceous shale formations / microbiostratigraphy / diatom / Radiolaria / average accumulation rate of glauconite bed / average sedimentation rate of biogenic silica / REE pattern / 東北本州弧第三系堆積盆 / 四つ沢層 / 和田川層 / 石灰質ナンノ化石 / 青森県新第三系 / 第三紀珪質頁岩 / 下北 / 蒲野沢層 / 珪藻生層序 / シリカ続成作用 / 夏泊半島 / 鯵ケ沢
Research Abstract

Neogene siliceous shale formations in northern Japan are a part of the Tertiary siliceous deposits of the North Pacific region. Lithostratigraphy and microbiostratigraphy (diatom, Radiolaria, calcareous nannofossils, foraminifera, and pollen) of the siliceous shale formations of Aomori, Northeast Honshu have been established. The siliceous shale formations cover from Middle Miocene to Pliocene, of which the Middle Miocene is most widespread. Glauconite bed deposited on a bank exists at the base of the Middle Miocene Ohdoji Formation in the Ajigasawa area of western Aomori; the 7.3 m-thick glauconite bed on the Kurosakigawa route represents 330 m.y. with an average accumulation rate of about 45 m.y./m or 2.2 cm/m.y. In the Ajigasawa area, the average sedimentation rate of biogenic silica had been nearly constant, 7.3 - 9.3 g/cm^2kry, from Middle Miocene to Pliocene, although the average sedimentation rates of the siliceous shale formations increase from Middle Miocene to Pliocene. There … More fore, the variable sedimentation rates of the siliceous shale formations are not due to the difference in the productivity of siliceous organisms, in particular diatom, but due to the inflow of terrigenous material. REE. patterns of the siliceous shale formations show normal or positive Ce anomalies, suggesting strong terrestrial influence. The uranium content is 1 - 18 ppm, largely 10 ppm in the west of Aomosri and less than 5 ppm in the east; these values are far less than those in siliceous shale of the Monterey Formation of California. Neither phosphorite beds nor phosphatic rocks have not been recognized in the siliceous shale formations of Aomori. So far as known, some phosophatic nodule of a late diagenesis origin were reported from Upper Miocene black mudstone of the Funakawa Formation of Akita on the south of Aomori and guano-type phophorite was mined in the Noto Peninsula. The Middle Miocene diatomaceous and lithified siliceous deposits of the Northeast Honshu Arc and Noto Peninsula were accumulated in an elongated, upper to middle bathyal basin which was formed along a rift zone on the west coast of Japan. The east side of the basin was bordered by the small landmasses of the Kitakami and Abukuma Plateaus, whereas its west side was limited by a submarine rise or landmass separating the basin from the Paleo-Yamato Basin of the newly-born Sea of Japan. The width of the basin filling the Middle Miocene siliceous shale formations would be 200 - 250 km. Less

Report

(3 results)
  • 1987 Annual Research Report   Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] Tada, Ryuji et al: Jour. Faculty, Niversity of Tokyo Section II. 21. 333-349 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Matsumoto, Ryo et al.: Jour. Faculty, University of Tokyo Section II. 21. 351-377 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 多田隆治 ほか: 地質学雑誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] TADA, RYUJI, WATANABE, YOSHIO, AND IIJIMA, AZUMA: "ACCUMULATION OF LAMINATED AND BIOTURBATED NEOGENE SILICEOUS DEPOSITS IN AJIGASAWA AND GOSHOGAWARA AREAS, AOMORI PREFECTURE, NORTHEAST JAPAN" JOURNAL OF THE FACULTY OF SCIENCE, UNIVERSITY OF TOKYO SECTION II. 21 (3). 333-349 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] MATSUMOTO, RYO MATSUDA, HIROKI: "OCCURRENCE, CHEMISTRY AND ISOTOPIC COMPOSITION OF CARBONATE CONCRETIONS IN THE MIOCENE TO PLIOCENE SILICEOUS SEDIMENTS OF AOMORI, NORTHEAST JAPAN" JOURNAL OF THE FACULTY OF SCIENCE, UNIVERSITY OF TOKYO SECTION II. 21 (4). 351-377 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] TADA, RYUJI, MIZUNO, TATSUYA, AND IIJIMA, AZUMA: "STRATIGRAPHY AND GEOLOGICAL STRUCTURE OF NEOGENE FORMATIONS IN THE NORTHEAST PART OF THE SHIMOTITA PENINSULA, AOMORI, NORTHEAST HONSHU" JOURNAL OF THE GEOLOGICAL SOCIETY OF JAPAN.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Matsumoto Ryo et al.: Jour.Faculty of Science,University of Tokyo Section II. 21. 351-377 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 多田隆治ほか: 地質学雑誌.

    • Related Report
      1987 Annual Research Report
  • [Publications] Ryuji Tada;Yoshio Watanabe;Azuma Iijima: Journal of the Faculty of Science,University of Tokyo,Sec 【II】. 21. 139-167 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Yoshio Watanabe;Ryuji Tada;Azuma Iijima: Journal of the Faculty of Sience,University of Tokyo,Sec【II】.

    • Related Report
      1986 Annual Research Report
  • [Publications] 水野達也,多田隆治,飯島東: 地質学雑誌.

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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