Yan Lavallée

TL;DR: A series of high-temperature experiments are used to demonstrate a mechanism for the spontaneous, efficient and continuous production of exsolution of dissolved volatiles of a fluid phase in Kimberlite magmas, which requires parental melts of kimberlite to originate as carbonatite-like melts.

TL;DR: Results of rheological experiments with continuous microseismic monitoring reveal that dome lavas are seismogenic and that the character of the seismicity changes markedly across the ductile–brittle transition until complete brittle failure occurs at high strain rates.

TL;DR: In this article, a singular dependence of viscosity (η) on strain rate (γ) yields a novel universal rheology law at eruptive temperatures (T ), i.e., log η = −0993 + 8974/T −0543·log γ.

TL;DR: In this paper, the authors evaluate the interplay between microstructure and rock properties for a suite of edifice-forming rocks from Volcan de Colima (Mexico) and find that porosities are high and range from 8 to 29% as a consequence, elastic wave velocities, Youngs moduli, and uniaxial compressive strengths are low, and permeabilities are high.

TL;DR: In this paper, the influence of thermal-stressing on high-strength concrete (HSC) properties was studied and it was shown that residual compressive strength, indirect tensile strength, ultrasonic wave velocities, and Young's modulus and Poisson's ratio decrease with increasing temperature.