Teng-fong Wong

TL;DR: In this paper, scanning electron microscope (SEM) observations were made on two suites of ion-thinned samples deformed at 400 MPa, 350°C and 250 MPa 150°C.

TL;DR: In this article, the authors investigated the frictional sliding behavior of simulated quartz-clay gouges under stress conditions relevant to seismogenic depths and found that the overall trend was a decrease in strength with increasing clay content, and the transition from regime 1 (high strength) to 2 (intermediate strength) is associated with the shift from a stress-supporting framework of quartz grains to a clay matrix embedded with disperse quartz grains, manifested by the development of P-foliation and reduction in Riedel shear angle.

TL;DR: In this paper, the authors used optical and transmission electron microscopy to characterize the deformation of Carrara marble at room temperature to varying strains at confining pressures spanning the range in mechanical behavior from brittle to plastic.

TL;DR: Laser scanning confocal microscopy can be used to image the pore structure of geologic materials in three dimensions at a resolution of 200 nanometers to reveal the geometric complexity of the p pores.

TL;DR: In this article, the authors investigate the microstructural basis for a statistical model of compressive failure in a brittle rock, and establish a methodology whereby the Weibull parameters can be inferred from micro-structural data on microcrack density and length statistics for input into finite element simulations.