In geophysics, a fault is a fracture or zone of fractures within Earth’s crust along which measurable displacement has occurred due to tectonic stress. Faults accommodate brittle deformation and are characterized by a fault plane (or surface), a slip direction, and associated structures such as fault gouge and breccia. They are classified by kinematics into normal, reverse (including thrust), and strike-slip types, reflecting the dominant stress regime (extensional, compressional, or shear). Faults influence strain localization, fluid migration, and seismicity, with many earthquakes resulting from sudden slip episodes governed by frictional and elastic properties of the surrounding rocks.
Megathrust earthquakes are large earthquakes that occur on faults found along the boundaries between tectonic plates. The Nankai Trough is a megathrust earthquake zone lying off the southwestern coast of Japan, and experts ...
Earth Sciences
Jul 23, 2025
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Dramatic CCTV video of fault slip during a large earthquake in Myanmar thrilled both scientists and casual observers when it was posted to YouTube. But it was on his fifth or sixth viewing, said geophysicist Jesse Kearse, ...
Earth Sciences
Jul 21, 2025
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Chinese researchers have recently challenged the long-held belief that "all life depends on sunlight." In a study published in Science Advances, the researchers identified how microbes in deep subsurface areas can derive ...
Earth Sciences
Jul 18, 2025
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New research led by the University of Victoria (UVic) has illuminated a significant and previously unrecognized source of seismic hazard for the Yukon Territory of northwestern Canada.
Earth Sciences
Jul 16, 2025
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Scientists for the first time have detected a slow slip earthquake in motion during the act of releasing tectonic pressure on a major fault zone at the bottom of the ocean.
Earth Sciences
Jun 26, 2025
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Atoms slip against one another, eventually sticking in various combinations. Tectonic plates do the same, sliding across each other until they stick in a stationary state. Everything from the tiniest particles to unfathomably ...
General Physics
Jun 23, 2025
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Researchers have developed a laboratory earthquake model that connects the microscopic real contact area between fault surfaces to the possibility of earthquake occurrences. Published in the Proceedings of the National Academy ...
Earth Sciences
Jun 6, 2025
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Seismological research is directly related to the incubation, occurrence, and evolution of earthquakes. Scientists seek to reveal potential earthquake precursors by monitoring the stress state of fault zones, thus providing ...
Earth Sciences
May 30, 2025
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When we think of earthquakes, we imagine sudden, violent shaking. But deep beneath Earth's surface, some faults move in near silence. These slow, shuffling slips and their accompanying hum—called tremors—don't shake buildings ...
Earth Sciences
May 14, 2025
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About 240 miles long, Utah's Wasatch Fault stretches along the western edge of the Wasatch Mountains from southern Idaho to central Utah, running through Salt Lake City and the state's other population centers. It's a seismically ...
Earth Sciences
Apr 30, 2025
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