Effects of Temperature and Strain Rate on the Experimental Deformation of an Early-Cemented Jurassic Limestone

Abstract

Samples from the Jurassic Inferior Oolite, which show evidence of early cementation, were experimentally deformed at 25°C, 100°C, 200°C, 200 MPa confining pressure, and strain rates of , , and The tests resulted in very similar stress/strain curves for the entire range of environmental conditions. The decrease in strength associated with the development of a ductile fault zone occurred at progressively higher axial strain as a result of the promotion of intracrystalline slip with increasing temperature and decreasing strain rate. This caused some test series to show an increase in strength with decreasing strain rate and increasing temperature.