2005 Fiscal Year Final Research Report Summary
Understandings of phase transitions of hydrous silicates at mantle conditions
| Project/Area Number |
15340190
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Geochemistry/Astrochemistry
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
KAGI Hiroyuki University of Tokyo, Graduate School of Sciences, Associate Professor, 大学院・理学系研究科, 助教授 (70233666)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
TSUNOMORI Fumiaki University of Tokyo, Graduate School of Sciences, Research Associate, 大学院・理学系研究科, 助手 (60291928)
NARA Masayuki Tokyo Medical and Dental University, Associate Professor, 教養部, 助教授 (90301168)
OKADA Taku Institute of Solid State Physics, Research Associate, 物性研究所, 助手 (90343938)
MIZUKAMI Tomoyuki Nagoya University, Postdoc, 大学院・環境学研究科, 博士研究員
|
|---|
| Project Period (FY) |
2003 – 2005
|
| Keywords | hydrogen bonds / interior of the earth / Raman spectroscopy / diamond anvil cell / infrared spectroscopy / in-situ observation / neutron diffraction |
|---|
| Research Abstract |
Pressure response of hydrogen bonds in hydrous minerals stable at the mantle conditions can be an important scientific target for understandings of elastic properties of deep earth materials. In this research project, we have developed an instrument which enables us in-situ high-pressure spectroscopic observations of hydrous materials using a diamond anvil cell. In particular, we have modified a commercially available FTIR and Raman spectra can be observed simultaneously using the same equipment.
Furthermore, fluid inclusions of mantle origins, for example fluid inclusions in natural diamonds, were studied. Near infrared spectra of fluid inclusions demonstrated the residual pressure of fluid inclusions to be significantly high. Spectroscopic measurements with very high spatial resolutions were also developed.
|
