First order splay faults, as defined here, are secondary faults that form at acute angles symmetrically on either side of a primary fault of the same sense of shear. We show that these faults form when the primary fault becomes critically misaligned with the principal stresses such that splay fault formation, on the optimum plane for faulting, is favored. First order splay faults, in distinctio...

Long-term ground deformation monitoring using the Persistent Scatterer Interferometry Wide Area Product (PSI-WAP) technique for the period 1992-2003, combined with Differential GPS measurements and seismicity analysis has provided useful information about the tectonic motions of the tectonically complex area of Patras Gulf (Western Greece), and lead to new insights on the geotectonic regime of ...

[1] The 1994 Double Spring Flat (DSF) earthquake (M5.9) was the largest earthquake to strike Nevada in more than 30 years. It occurred in the Sierra Nevada-Basin and Range Transition Zone within a step-over region between two major normal faults. Descending and ascending ERS interferograms show a maximum range change of 8.5 cm which is the coseismic ground displacement associated with this norm...

The 2016 MW 7.8 Kaikōura Earthquake nucleated on Humps fault, which ruptured across the Emu Plain in North Canterbury. paleoearthquake history of fault was poorly constrained prior to earthquake. To determine timing and single-event displacements (SED) earthquakes we use Optically Stimulated Luminescence (OSL) radiocarbon dates faulted stratigraphy analysis faulting (i.e. geometry slip) at McLe...

Varying estimates of both present-day strain accumulation and long-term slip rate on the Doruneh left-lateral strike-slip fault, NE Iran, have led to suggestions that it exhibits large along-strike and/or temporal changes in activity. In this study, we make compare measured using geodesy geomorphology, spanning time periods ranging from decadal 100 ka. To image strain, process 7 years (2003–201...

Some active fault systems comprise near-orthogonal conjugate strike-slip faults, as highlighted by the 2019 Ridgecrest and 2012 Indian Ocean earthquake sequences. In conventional Mohr-Coulomb failure theory, orthogonal faulting requires a zero frictional coefficient (pressure-insensitive), which is unlikely in brittle lithosphere. The simulations developed here show that faults can form layer i...