Abstract
Simple shear creep deformation experiments were performed using high resolution gas media apparatus on fine-grained samples of(Mg0.5 ,Fe0.5)2SiO4 at a temperature of 1473 K and a confining pressure of 300 MPa. Differential stresses in the range of 64 to 153 MPa resulted in strain rates between 10-5̃ 10-3s -1. Three samples were deformed to the shear strain of 89% , 131% and 200% , respectively. From the micro-structural analysis, grain size distribution, lattice preferred orientation, the seismic anisotropy characteristics as well as their changes with the strain were investigated.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2687-2693 |
| Number of pages | 7 |
| Journal | Acta Petrologica Sinica |
| Volume | 25 |
| Issue number | 10 |
| State | Published - Oct 2009 |
Keywords
- Experimental study
- Iron rich olivine aggregates
- Lattice preferred orientation (LPO)
- Seismic anisotropy
- Simple shear deformation