The anelastic response of single-crystal and polycrystalline quartz and quartz-rich sandstones to applied stress at low frequencies has been investigated by dynamic mechanical analysis and force torsion pendulum measurements. The dynamic modulus was measured on heating and cooling through the α-β phase transition under shear and bending stress applied at low frequency ( 1 Hz). Single crystal quartz shows highly anisotropic properties in both the real and imaginary part of the modulus. Polycrystalline novaculite quartz displays the α-β phase transition temperatures (Tc) around 8°C higher than seen in single crystal quartz, due to the pinning stress effect of grain boundaries. The properties of the sandstone vary with heating and cooling cycl...
A mylonitic quartzite with conjugate and synthetic shear bands was investigated by Electron Backscat...
The trasition from instable seismic to stable aseismic behaviour is observed in at the lower limit o...
The trasition from instable seismic to stable aseismic behaviour is observed in at the lower limit o...
Ductile deformation of the middle to lower crust during interseismic periods influences loading of b...
The mechanical properties of quartz are fundamental to control the plastic behaviour of the continen...
The mechanical properties of quartz are fundamental to control the plastic behaviour of the continen...
International audienceThe mechanical properties of quartz are fundamental to control the plastic beh...
International audienceThe mechanical properties of quartz are fundamental to control the plastic beh...
Tectonic pseudotachylytes, i.e. quenched friction-induced silicate melts, record coseismic slip alon...
Transgranular microcracking is fundamental for the initiation and propagation of all fractures in ro...
Quartz microstructures produced in short-term deformation and annealing experiments are compared wit...
Acoustic dissipation due to structural phase transitions in minerals could give rise to large seismi...
International audienceThe mechanical properties of quartz are fundamental to control the plastic beh...
Quartz is among Earth's most abundant minerals, which has several stable polymorphs in nature. In th...
Tectonic pseudotachylytes, i.e. quenched friction-induced silicate melts, record coseismic slip alon...
A mylonitic quartzite with conjugate and synthetic shear bands was investigated by Electron Backscat...
The trasition from instable seismic to stable aseismic behaviour is observed in at the lower limit o...
The trasition from instable seismic to stable aseismic behaviour is observed in at the lower limit o...
Ductile deformation of the middle to lower crust during interseismic periods influences loading of b...
The mechanical properties of quartz are fundamental to control the plastic behaviour of the continen...
The mechanical properties of quartz are fundamental to control the plastic behaviour of the continen...
International audienceThe mechanical properties of quartz are fundamental to control the plastic beh...
International audienceThe mechanical properties of quartz are fundamental to control the plastic beh...
Tectonic pseudotachylytes, i.e. quenched friction-induced silicate melts, record coseismic slip alon...
Transgranular microcracking is fundamental for the initiation and propagation of all fractures in ro...
Quartz microstructures produced in short-term deformation and annealing experiments are compared wit...
Acoustic dissipation due to structural phase transitions in minerals could give rise to large seismi...
International audienceThe mechanical properties of quartz are fundamental to control the plastic beh...
Quartz is among Earth's most abundant minerals, which has several stable polymorphs in nature. In th...
Tectonic pseudotachylytes, i.e. quenched friction-induced silicate melts, record coseismic slip alon...
A mylonitic quartzite with conjugate and synthetic shear bands was investigated by Electron Backscat...
The trasition from instable seismic to stable aseismic behaviour is observed in at the lower limit o...
The trasition from instable seismic to stable aseismic behaviour is observed in at the lower limit o...