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2000 Fiscal Year Final Research Report Summary

Mechanical heterogeneity in rocks with a nano-indentation tester

Research Project

Project/Area Number 10440140
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field Geology
Research InstitutionShizuoka University

Principal Investigator

MASUDA Toshiki  Faculty of Science, Shizuoka University, Professor, 理学部, 教授 (30126164)

Project Period (FY) 1998 – 2000
Keywordsnano-indentation cester / atomic force microscope / minerals / Young's modulus / diamond indenter / plastic deformation / point contact deformation / lattice creasing
Research Abstract

A nano-indentation tester (RIDER-1) with a pyramidal diamond indenter can measure the load and the displacement with a high precision during the loading and unlaoding cycle. Vickers indentation test of natural quartz were performed with a load of 98 mN at room temperature and one atmosphere. Atomic force microscopy revealed no evidence of fracturing during indentation. Transmission electron microscope observations indicate that no dislocations were generated during the indentation tests. However, high resolution electron microscopy revealed that sharp creases of crystal lattices had developed. These observations lead to the conclusion that quartz deformed plastically even at room temperature. The plastic strain was accommodated by the mechanism of lattice creasing, which is described here for the first time. Young's modulus of quartz, piedmontite and glaucophane were also measured with the Oliver-Pharr method, the results being 14.7, 37.1 and 46 GPa, respectively.

  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 増田俊明,水野直哉,伊計秀明: "マントルドポーフィロクラストの形成と塑性剪断変形"月刊地球. 20. 93-99 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takahashi,M.,Nagahama,H.,Masuda,T.& Fujimura,A.: "Fractal analysis of experimentally, dynamically recrystallized quarty grains and its possible application as a strain mate meter"Journal of Structural Geology. 20. 269-275 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 増田俊明: "回るか回らないか,それが問題だ:snowball構造の形成過程について"地学雑誌. 108. 94-109 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Nam,T.N.,Otoh,S. & Masuda,T.: "In-situ experiments of octachloropropane as a rock analogue : kinetics and energetics of grain growth"Tectonophysics. 304. 57-70 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masuda,T.,Kugimiya,Y.,Aoshima,I.,Hara,Y. & Ikei,H.: "A statistical approach to determination of a mineral lineation"Journal of Structural Geology. 21. 467-472 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masuda,T.,Hiraga,T.,Ikei,H.,Kanda,H.,Kugimiya,Y.& Akizuki,M.: "Plastic deformation of quarty at room temperature : a Vickers nano-indentation test"Geophysical Research Letters. 27. 2773-2776 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takahashi, M., Nagahama, H., Masuda, T.& Fujimura, A.: "Fractal analysis of experimentally, dynamically recrystallized quartz grains and its possible application as a strain rate meter."Journal of Structural Geology. 20. 269-275 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nam, T.N., Otoh, S.& Masuda, T.: "In-situ experiments of octachloropropane as a rock analogue : kinetics and energetics of grain growth."Tectonophysics. 304. 57-70 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masuda, T., Kugimiya, Y., Aoshima, I., Hara, Y.& Ikei, H.: "A statistical approach to determination of a mineral lineation."Journal of Structural Geology. 21. 467-472 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Komiya, T., Maruyama, S., Masuda, T., Nohda, S., Hayashi, M.& Okamoto, K.: "Plate tectonics at 3.8-3.7 Ga field evidence from the lsua accretionary complex ; southern West Greenland."Journal of Geology. 107. 515-554 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masuda, T., Hiraga, T., Ikei, H., Kanda, H., Kugimiya, Y.& Akizuki, M.: "Plastic deformation of quartz at room temperature : a Vickers nano-indentation test."Geophysical Research Letters. 27. 2773-2776 (2000)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2002-03-26  

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