• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

The evolution of deeply subducted carbonates and the formation of microdiamonds

Research Project

Project/Area Number 13640485
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionWaseda University

Principal Investigator

OGASAWARA Yoshihide  School of Education, Professor, 教育学部, 教授 (70160736)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2002: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2001: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywordsdiamond / dolomite / Dolomite marble / fluid / Kokchetav / UHP metamorphic rock / deep subduction / Continental collision / ダイアモンド / チタン石 / 離溶コース石 / コクチェトフ超高圧変成帯
Research Abstract

Deeply subducted carbonate rocks from the Kokchetav Massif, Kazakhstan were investigated in terms of the following subjects.
1. Extremely high concentration of microdiamond found in dolomite marble. The contents of microdiamond are largely different domain by domain of the dolomite marble. The highest concentration of diamond were measured as about 2800 carat/ton.
2. One of the samples showed the close relations between chemical zonation of garnet and the diamond distribution.
3. The microdiamonds in dolomite marbles were classified into three types, S-type, R-type and T-type by their morphology.
4. Microscopic observation, micro-Laue diffraction, laser Raman spectroscopy and micro cathode luminescence showed that the microdiamond formed at two stages.
5. Micro -aue diffraction clarified the orientation of the rim and the core of S-type microdiamond. The rim is very fine grained transparent crystals and overgrew on the core at the 2^<nd> stage. The core of S-type diamond is a single crystal.
6. The results suggested that the microdiamond in dolomite marble formed from fluids during both prograde and retrograde stage of UHP metamorphism.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] Ohta, Mock, Ogasawara, Rumble: "Oxygen, carbon and strontium isotope geochemistry of diamond-bearing Carbonate rocks from Kumdy-kol, Kokchetav Massif, Kazakhstan"Lithos. (In press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ishida, Ogasawara, Ohsumi, Saito: "Two-stage growth of microdiamond in UHP dolomite marble from Kokchetav Massif, Kazakhstan"Journal of Metamorphic Geology. 21(In press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Mukherjee, Sachan, Ogasawara, Muko, Yoshioka: "Carbonate-bearing UHPM rocks from Tso-Morari region, Ladakh, India : petrological implication"International Geology Review. (In press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Katayama, Ohta, Ogasawara: "Mineral inclusions in zircon from diamond-bearing marble in the Kokchetav Massif, northern Kazakhstan"Europian Journal of Mineralogy. 14. 1103-1108 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ogasawara, Ohta, Fukasawa, Katayama, Maruyama: "Petrology of diamond-bearing dolomite marble from Kumdy-kol"The Diamond-bearing Kokchetav Massif, Kazakhstan. 192-211 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ogasawara, Fukasawa, Maruyama: "Coesite exsolution from supersilicic titanite in UHP marble from the Kokchetav Massif, northern Kazakhstan"American Mineralogist. 87. 454-461 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ohta, Mock, Ogasawara, Rumble: "Oxygen, carbon and strontium isotope geochemistry of diamond-bearing Carbonate rocks from Kumdy-kol, Kokchetav Massif, Kazakhstan"Lithos. (in press). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ishida, Ogasawara, Ohsumi, Saito: "Two-stage growth of microdiamond in UHP dolomite marble from Kokchetav Massif, Kazakhstan"Journal of Metamorphic Geology. (in press). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Mukherjee, Sachan, Ogasawara, Muko, Yoshioka: "Carbonate-bearing UHPM rocks from Tso-Morari region, Ladakh, India: petrological implication"International Geology Review. (in press). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Katayama, Ohta, Ogasawara: "Mineral inclusions in zircon from diamond-bearing marble in the Kokchetav Massif, northern Kazakhstan"European Journal of Mineralogy. 14. 1103-1108 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ogasawara, Fukasawa, Maruyama: "Coesite exsolution from supersilicic titanite in UHP marble from the Kokchetav Massif, northern Kazakhstan"American Mineralogist. 87. 454-461

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ogasawara, Ohta, Fukasawa, Katayama, Maruyama: "Petrology of diamond-bearing dolomite marble from Kumdy-kol, in The Diamond-bearing Kokchetav Massif, Kazakhstan"Universal Academy Press. 192-211 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ohta, Mock, Ogasawara, Rumble: "Oxygen, carbon and strontium isotope geochemistry of diamond-bearing Carbonate rocks from Kumdy-kol, Kokchetav Massif, Kazakhstan"Lithos. (In press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Ishida, Ogasawara, Ohsumi, Saito: "Two-stage growth of microdiamond in UHP dolomite marble from Kokchetav Massif, Kazakhstan"Journal of Metamorphic Geology. 21(In press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Mukherijee, Sachan, Ogasawara, Muko, Yoshioka: "Carbonate-bearing UHPM rocks from Tso-Morari region, Ladakh, India : petrological implication"International Geology Review. (In press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Katayama, Ohta, Ogasawara: "Mineral inclusions in zircon from diamond-bearing marble in the Kokchetav Massif, northern Kazakhstan"Europian Journal of Mineralogy. 14. 1103-1108 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Ogasawara, Ohta, Fukasawa, Katayama, Maruyama: "Petrology of diamond-bearing dolomite marble from Kumdy-kol"The Diamond-bearing Kokchetav Massif, Kazakhstan. 192-211 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Ogasawara, Fukasawa, Maruyama: "Coesite exsolution from supersilicic titanite in UHP marble from the Kokchetav Massif, northern Kazakhstan"American Mineralogist. 87. 454-461 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Ogasawara, Ishida: "Diamond, fluid and carbonates-stability and genesis of metamorphic diamonds"Fluid / Slab / Montle Interactions and Ultrahigh-p minerals. 1-5 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Yoshioka, Muko, Ogasawara: "Extremely high diamond concentration in dolomite marble"Fluid / Slab / Montle Interactions and Ultrahigh-p Minerals. 51-55 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Fukasawa et al.: "How deep were carbonates subdoctes into the manth-Unique UHP evidence in the marbles from Kokchetar"Fluid / Slab / Monthe Interactions and Ultrahigh-p minerals. 185-189 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ogasawara, Fukasawa, Maruyama: "Coesiee exsoltion from super-silicic titanite An example of impars UHP moarble from The Kokchetar Massif-"Abstracts of the 6th IEC. 105-106 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ogasawara, Fukasawa, Maruyama: "Coesite exsolution from super silicic titanite in UHP marble from the Kokchetar-Massit, northern katakhstan"American Mireralogist. 87(未定). (2002)

    • Related Report
      2001 Annual Research Report

URL: 

Published: 2001-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi