Study on viscosity contrast between majorite and ringwoodite
| Project/Area Number |
20740307
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Petrology/Mineralogy/Science of ore deposit
|
|---|
| Research Institution | Tokyo Institute of Technology |
|---|
Principal Investigator |
NISHIHARA Tu Tokyo Institute of Technology, 上級研究員センター, 上級研究員 (10397036)
|
|---|
| Project Period (FY) |
2008 – 2009
|
| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
|
|---|
| Keywords | 鉱物物理 / マントル遷移層 / 高圧変形実験 / 流動特性 / レオロジー / せん断変形 / メージャライト / リングウッダイト / X線その場観察 |
|---|
| Research Abstract |
In order to study viscous behavior of the deep Earth materials, experimental techniques on deformation experiment and stress measurement under high-temperature and high-pressure were developed. An experimental study using the developed technique revealed that the activation volume of the low-temperature rheology of olivine has positive value, and this suggests that viscous resistance by subducting slab increases with increasing depth. On the other hand, a preliminary study on mechanism of the decompression-decomposition reaction of majorite showed that the reaction starts with formation of garnet and clinopyroxene with disequilibrium compositions followed by chemical diffusion in garnet.
|
Report
(3 results)
Research Products
(34 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Stress relaxation test of olivine under Earth's deep upper mantle conditions2009
Author(s)
Nishihara, Y., Funakoshi, K., Higo, Y., Tsujino, N., Kawazoe, T., Kubo, T., Shimojuku, A., Tearasaki, H., Nishiyama, N.
Organizer
AIRAPT-22 & HPCJ-50
Place of Presentation
東京、お台場
Year and Date
2009-07-30
Related Report
-
[Presentation] The orthoenstatite/clinoenstatite phase transition under the upper mantle conditions determined by in situ X-ray diffraction : Implications for nature of the X-discontinuity2009
Author(s)
AKASHI, A., NISHIHARA, Y., T AKAHASHI, E., NAKAJIMA .Y., TANGE, Y., FUNAKOSHI, K.
Organizer
Goldschmidt Conference 2009
Place of Presentation
Davos, Switzerland
Year and Date
2009-06-22
Related Report
-
-
[Presentation] Stress relaxation test of olivine under Earth's deep upper mantle conditions2009
Author(s)
Nishihara, Y., Funakoshi, K., Higo, Y., Tsujino, N., Kawazoe, T., Kubo, T., Shimojuku, A., Terasaki, H., Nishiyama
Organizer
地球惑星科学連合大会
Place of Presentation
幕張メッセ国際会議場
Year and Date
2009-05-20
Related Report
-
-
-
-
-
-
-
-
-
