U.S. Earthquake Zonesalaska earthquakes
Rupture of the plate boundary fault during the 2011 Tohoku-oki earthquake with moment magnitude 9.0 is thought to have propagated to the trench. Surface exposure of the fault has not yet been confirmed because of great depths that are challenging to acce
of meters. Pseudotachylyte-bearing fault zones in the exhumed accretionary complexes commonly contain quartz, calcite, ankerite, and laumontite veins and their fragments, which are consistent with fluid-infiltrated conditions (Ikesawa et al.2003; Mukoyoshi et al.2006; Okamoto et al.2006; Ujiie et...
of meters. Pseudotachylyte-bearing fault zones in the exhumed accretionary complexes commonly contain quartz, calcite, ankerite, and laumontite veins and their fragments, which are consistent with fluid-infiltrated conditions (Ikesawa et al.2003; Mukoyoshi et al.2006; Okamoto et al.2006; Ujiie et...
Citation2012; the USA’s Basin and Range Province; Pérouse and Wernicke Citation2017; Korean Peninsula; Kim and Lee Citation2023). Geologic setting Southwest of the Hillfoot Fault, bedrock in the southeastern South Island comprises Murihiku Terrane (Figures 1 and 2), a Late Permian to Jurassic...
anMW6.7 rupture struck the Doğanyol-Sivrice region of the central EAFZ main strand, northeast of the bifurcation; this was the largest event on the fault in the last 50 years prior to 202325,26,27,28,29,30,31. The cumulative slip on the main strand of the EAFZ is modest, with ...
As many earthquakes occur in deep-sea regions, the dynamics of earthquake faulting in subduction zones is poorly understood. However, the Integrated Ocean Drilling Program (IODP) Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) and fault rock studies in accretionary prisms exhumed from source ...
In the Solomon Islands and New Britain subduction zones, the largest earthquakes commonly occur as pairs with small separation in time, space and magnitude. This doublet behavior has been attributed to a pattern of fault plane heterogeneity consisting of closely spaced asperities such that the failur...
The region where the 06 February 2023,M7.5 earthquake sequence occurred is seismically active, although seismicity is moderate (<M7) compared to the nearby plate boundary zones in Turkey. The epicenter of this event places it on the Sürgü fault, directly west of the East Anatolian fault. ...
decreased after a Mw 6.0 earthquake, suggesting the magmatic dike lost pressure with the slipping of a large fault. A seafloor eruption is likely, but not confirmed by sea surface temperature anomalies. The unrest documents episodic magmatic intrusion in the Bransfield Strait, providing unique ...