A comparison of deformation rates from Canada’s Saint Lawrence Valley offers compelling evidence that strain in the region is concentrated along ancient structures from previous tectonic cycles.
faults
Posted inNews
Watch Tiny Cracks Travel in 3-D
Scientists used a transparent gel and high-speed photography to figure out how cracks form and spread. What they found could help explain earthquakes and fracturing glaciers.
Posted inEditors' Highlights
A New Spin on Grain Segregation in Fault Zones
Fine-grained layers in sheared fault gouge may be formed by shear-driven size-segregation in granular materials, rather than by shear localization.
Posted inEditors' Highlights
Successful Testing of Technique to Measure Seafloor Strain
A new optical fiber interferometry strain sensor tested off the Oregon coast holds promising prospects for seafloor geodesy.
Posted inResearch Spotlights
Constraining Central Washington’s Potential Seismic Hazard
Fault geometry and slip rate analyses show deformation in the Yakima Fold Province accelerated in the Pleistocene and has remained elevated, offering new insights into earthquake recurrence intervals.
Posted inResearch Spotlights
New Insights into Continental Deformation in Northwestern Tibet
A new surface velocity map shows strain localized along major strike-slip features, suggesting the central Tibetan Plateau is not deforming as a fluid in response to gravitational collapse.
Posted inResearch Spotlights
Evidence for Gravity Tectonics After the Great Sumatra Quake
A new method that applies structural geology principles to aftershock analyses suggests that gravity-driven motion may occur during part of the seismic cycle.
Posted inEditors' Highlights
What Happens Inside Rocks as They Fail?
An innovative technique provides micro-scale resolution on the three-dimensional evolution of damage within crystalline rocks that leads to fault nucleation.
Posted inResearch Spotlights
An Improved Understanding of How Rift Margins Evolve
A new seismic reflection study of the mid-Norwegian margin examines the role that low-angle, high-displacement faults play in the evolution of continental rifts.
Posted inResearch Spotlights
New Model Simulates Faults and Folds Shaping Each Other
A new model simulates how faulting and folding deep in Earth’s crust shape the way rocks fold and cause earthquakes.