2019 Fiscal Year Annual Research Report
Material-physical processes controlling fault-slip at the depth limits of the seismogenic zone
| Project/Area Number |
19K14823
|
|---|
| Research Institution | National Institute of Advanced Industrial Science and Technology |
|---|
Principal Investigator |
Verberne Berend 国立研究開発法人産業技術総合研究所, 地質調査総合センター, 研究員 (40827010)
|
|---|
| Project Period (FY) |
2019-04-01 – 2020-03-31
|
| Keywords | quartz / feldspar / seismogenic zone / earthquake / shear deformation / fault slip / localization |
|---|
| Outline of Annual Research Achievements |
The strength and stability of simulated quartz-feldspar faults was tested under P-T conditions pertaining to the upper 18 km of the crust, through experiments at AIST and at Tohoku university. All mechanical data show a friction coefficient of 0.7-0.8 and velocity strengthening behavior. Fragments of samples deformed at the Tohoku lab were investigated using incident light and scanning electron microscopy. These show evidence for localized shear deformation and local melt generation.
|
