Determination of Equation of stato of manthe minerals by in situ X-ray dillraction study.

原位X射线衍射研究测定锰矿矿物状态方程。

• 批准号: 07640632
• 负责人: OHTANI Eiji
• 金额: $ 1.34万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07640632/
• 关键词: equation of state; X-ray diffraction; olivine; modified spinel; spinel; majorite; upper mantle; transition zone; 圧縮率; 地震波速度; パイロライト; 焼結ダイヤモンド; マルチアンビル高圧装置; 放射光

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.

我们用高压高温下的原位X射线衍射法测定了地幔矿物的P-V-T关系（状态方程）。测量是在中国科学院高能物理研究所光子工厂使用DIA型六面顶压机（MAX 80）和同步辐射强X射线进行的。我们确定的地幔矿物有橄榄石、变质尖晶石和Mg_2SiO_4尖晶石以及成分为95Mg_2SiO_3 - 5Al_2O_3的镁铝榴石固溶体。测量的压力和温度范围如下：橄榄石，5-12 GPa和25-1000 ℃，改性尖晶石，12- 17.5GPa和25-1100 ℃，尖晶石，18-24 GPa和25-800 ℃，尖晶石，10 - 100 ℃，尖晶石，10利用这些数据，估算了上地幔和过渡带沿着地温的密度剖面。

项目成果

Geller.R.J.他: "Seismology in Japan Part1 and Part2" 日本地震学会, 361 (1995)

Geller.R.J. 等人：《日本地震学第 1 部分和第 2 部分》日本地震学会，361 (1995)

Ohtani,E他: "Origin of cratonic peridotite and Komatiite:Evidence for melting in wet Archean mantle" Proceedings of Japan Academy. 72. 113-117 (1996)

Ohtani, E 等人：“克拉通橄榄岩和 Komatiite 的起源：湿太古代地幔中熔融的证据”日本科学院院刊 72. 113-117 (1996)。

ChtaniE& Yurimoto,H: "Element partitioning botween metallic liguid,magnesiowiistite,and silicate liguid at 20GPa and 2500℃" Geophys.Res.Lett. 23. 1993-1996 (1996)

ChtaniE& Yurimoto,H：“20GPa和2500℃下底部金属液体、镁硅石和硅酸盐液体的元素分配”Geophys.Res.Lett. 23. 1993-1996 (1996)

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

Kato, T.、Ohtani, E.、Morishima, H.、Yamazaki, D.、Suzuki, A.、Suto, M. 和 Kubo, T.：“高压相变的原位 X 射线观察

Ohtani,E他: "Stability of hydrous phases in the transition zone and the upper most port of the lower mantle," Geophys.Res.Lett.22. 2553-2556 (1995)

Ohtani, E 等人：“过渡带和下地幔最上部端口的水相稳定性”，Geophys.Res.Lett.22（1995）。