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Neodymium and Strontoum isotopic variations in North Pasific pelagic sediments.

Research Project

Project/Area Number 07640607
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geology
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

HAMAMOTO Reiko  KYUSHU UNIVERSITY Faculty of Science, Reserch Assistant, 理学部, 教務員 (40089917)

Co-Investigator(Kenkyū-buntansha) YANAGI Taketu  KYUSYU UNIVERSITY Faculty of Science, Professor, 理学部, 教授 (90037234)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1997: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1996: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1995: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordsneodymium isot / neodymium isotopic standard JNdi-1 / rare earth elements / pelagic sediments / improvement of Nd isotope analysis / Sm / ネオジウム同位体 / 標準試料 / JNdi-1 / 風成塵 / Sr同位体比
Research Abstract

It is difficult to separation and isotope measurement of rare earth elements (REE) as follows. (1) The REE occur as trace elements in rock-forming minerals, (2) the REE is quite similar in chemically each other, (3) isotopic variations of neodymium (Nd) in sediments are within 0.0001.
We have no experience to analysis of REE and spent three years on improvement of analytical method of neodymium and samarium.
The improvement of Nd isotope analysis by mass spectrometer is reported in "1996s meeting of Mass Spectrometry Society of Japan" as "Preparation of neodymium isotopic standard JNdi-1". That is co-studies of seven universities for the improvement of Nd isotopic analysis with new Nd standard prepared by T.Tanaka in Nagoya University.
We also improved the Nd chemical separation from another REE and purification of REE from rock samples.
We have to apologized that we couldn't reported on the Nd analytical result of pelagic sediments from North Pacific.

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report

Research Products

(3 results)

All Other

All Publications (3 results)

  • [Publications] 山下 正一: "筑紫平野における後期更新世の古環境" 九州大学理学部研究報告 地球惑星科学. 19. 53-79 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Shimoyama et.al.: "Paleoenvironment of the Late Pleistocene in the Chikushi Plain, West Japan." Sci.Repts., Dept.Earth & Planet.Sci., Kyushu Univ.Vol.19. 53-79 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 下山正一: "筑紫平野における後期更新世の古環境" 九州大学理学部研究報告地球惑星科学. 19. 53-79 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-03-31   Modified: 2016-04-21  

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