1996 Fiscal Year Final Research Report Summary
Determination of Equation of stato of manthe minerals by in situ X-ray dillraction study.
| Project/Area Number |
07640632
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
OHTANI Eiji Graduate School of Science, Tohoku Univ., Professor, 大学院・理学研究科, 教授 (60136306)
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| Co-Investigator(Kenkyū-buntansha) |
ONUMA Kosuke Graduate School of Science, Tohoku Univ., Professor, 大学院・理学研究科, 教授 (50000865)
ONUMA Kosuke Graduate School of Science, Tohoku Univ., Professor (50000865)
ONUMA Kosuke Graduate School of Science, Tohoku Univ., Professor (50000865)
ONUMA Kosuke Graduate School of Science, Tohoku Univ., Professor (50000865)
ONUMA Kosuke Graduate School of Science, Tohoku Univ., Professor (50000865)
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| Project Period (FY) |
1995 – 1996
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| Keywords | equation of state / X-ray diffraction / olivine / modified spinel / spinel / majorite / upper mantle / transition zone |
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| Research Abstract |
We have determined the P-V-T relation (equation of state) of mantle minerals by in-situ X-ray diffraction at high pressure and high temperature. The measurement was made by using DIA type cubic press (MAX80) and intense X-ray from the synchrotron radiation at Photon factory, National Institute of High Energy Physics. The mantle minerals whick we determine the equation of state are olivine, modified spinel and spinel of Mg2SiO4, and majorite garnet solid solution with a composition of 95Mg2SiO3-5Al2O3. The pressure and temperature range of the measurement were as follows ; olivine, 5-12 GPa and 25-1000ﾟC ; modified spinel, 12-17.5 GPa and 25-1100ﾟC ; spinel, 18-24 GPa and 25-800ﾟC ; majorite garnet, 6-23 GPa and 20-500ﾟC.Using these data determined here, we estimated the density profile along the geotherm in the upper mantle and the transition zone.
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Research Products
(17 results)
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[Publications] Kato, T., Ohtani, E., Morishima, H., Yamazaki, D., Suzuki, A., Suto, M., and Kubo, T.: "In situ X-ray observation of high-pressure phase transitions of MgSiO3 and thermal expansion of MgSiO3 perovskite at 25 GPa by double stage multianvil system." Journal of Geophysical Research. 100. 20475-20481 (1995)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Ohtani, E., Yurimoto, H., Segawa, T., and Kato, T.: "Element partitioning between MgSiO3 perovskite, magma, and molten iron : Constraints for the earliest process of the earth-moon system., in Earth's Central part : Its strucuture and dynamics." Edited by T.Yukutake, TERRAPUB,Tokyo. 287-300 (1995)
Description
「研究成果報告書概要(欧文)」より
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