Figure 4

Plastic strength of wet quartz and gabbro. Extrapolation of experimentally determined dislocation flow laws of wet quartz and gabbro to a natural strain rate ($\dot{\epsilon }=10^{-12}{\mathrm{s}}^{-1}$) are shown. LP, fine quartz aggregate synthesized from silicic acid (Paterson and Luan1990; Luan and Paterson1992); MP, Mainprice and Paterson (2005); RB, fine quartz aggregate synthesized from Brazilian quartz (Rutter and Brodie2004); GT, Black Hills quartzite (Gleason and Tullis1995); DD, synthetic gabbro (An50Di50, ‘wet’) of Dimanov and Dresen (2005).