Hydrothermal friction experiments in quartzite: The effect of temperature and normal stress on strength recovery
April 14, 2023
Laboratory slide-hold-slide tests were conducted in a conventional triaxial deformation configuration on 3/4-inch diameter cylindrical cores of Eureka quartzite bisected by a sawcut oriented at 30 degrees from vertical. Tests were conducted at constant normal stresses of 30, 110, and 210 MPa with a 10 MPa pore fluid pressure. The pore fluid was deionized water. Experiments were conducted at temperatures of 22, 100, and 200 degC.
Citation Information
| Publication Year | 2023 |
|---|---|
| Title | Hydrothermal friction experiments in quartzite: The effect of temperature and normal stress on strength recovery |
| DOI | 10.5066/P9DJXK42 |
| Authors | Tamara N Jeppson |
| Product Type | Data Release |
| Record Source | USGS Asset Identifier Service (AIS) |
| USGS Organization | Earthquake Hazards Program |
| Rights | This work is marked with CC0 1.0 Universal |
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Strength recovery in quartzite is controlled by changes in friction in experiments at hydrothermal conditions up to 200°C
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Related
Strength recovery in quartzite is controlled by changes in friction in experiments at hydrothermal conditions up to 200°C
The rate of fault zone restrengthening between earthquakes can be influenced by both frictional and cohesive healing processes. Friction is dependent on effective normal stress while cohesion is independent of normal stress, potentially explaining—in part—the lack of depth dependence of earthquake stress drops. Although amenable to laboratory testing, few studies have systematically addressed the
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