Quaternary Fault and Fold Database of the United States

The Quaternary Fault and Fold Database contains the results of thousands of scientific assessments of faults and associated folds in the United States that demonstrate geologic evidence for coseismic surface deformation in the Quaternary (the past 1,600,000 years). The Quaternary Fault and Fold Database includes information on the age of the most recent coseismic surface deformation, relative rates of activity, fault geometry, sense of movement, and citations of pertinent literature. Much of the information in the database is based on paleoseismology, which is the geologic study of prehistoric earthquakes. Paleoseismology combines well-established geologic practices such as trenching with archeological-style analysis...

Types: Citation; Tags: Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, National Seismic Hazard Model, Quaternary, All tags... Seismology, USGS, USGS Science Data Catalog (SDC), United States, earth science, earthquake, earthquake hazard, fault, fault orientation, fault surface trace, fault type, fault-source characterization, fold, geologic interpretation, geologic setting, geologic structure, geophysics, hazard map, paleoseismology, prehistoric earthquake, recurrence interval, seismology, sense of movement, sense of slip, slip rate, surface faulting, trenching, Fewer tags

Earthquake geology inputs for the U.S. National Seismic Hazard Model (NSHM) 2023 (western US) (ver. 2.0, February 2022)

Version 3.0 is now available. Please see new data release here: https://doi.org/10.5066/P9AWINWZ. This Data Release contains preliminary versions of two related databases: 1) A fault sections database (“NSHM23_FSD_v2”), which depicts the geometry of faults capable of hosting independent earthquakes, and 2) An earthquake geology site information database (“NSHM23_EQGeoDB_v2”), which contains fault slip-rate constraints at points. These databases were prepared in anticipation of updates to the National Seismic Hazard Model (NSHM) 2023. Fault-specific geologic parameters for the NSHM have not been updated since the 2014 NSHM release. The datasets include the states of Washington, Oregon, California, Idaho, Nevada,...

Categories: Data, Data Release - Revised; Tags: Arizona, California, Colorado, Geomorphology, Idaho, All tags... Montana, Nevada, New Mexico, Oregon, Structural Geology, Texas, USGS Science Data Catalog (SDC), Utah, Washington, Wyoming, earthquake, fault, slip rate, western United States, Fewer tags

Western U.S. geologic deformation model for use in the U.S. National Seismic Hazard Model 2023, version 1.0

The U.S. National Seismic Hazard Model (NSHM) relies on deformation models to assign slip rates along active faults used in the earthquake rupture forecast. Here, we present the geologic deformation model results in tabular form. We provide model outputs in multiple file formats, as well as the polygons used in analyses throughout the geologic deformation model process.The data presented herein are in support of the following interprative manuscript: Hatem, A.E., Reitman, N.G., Briggs, R.W., Gold, R.D., Thompson Jobe, J.A., Burgette, R.J., (2022) ­­­Western U.S. geologic deformation model for use in the U.S. National Seismic Hazard Model 2023, Seismological Research Letters.

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, California, Colorado, Geomorphology, Idaho, All tags... Montana, NSHM, Nevada, New Mexico, Oregon, Structural Geology, Texas, USGS Science Data Catalog (SDC), Utah, Washington, Wyoming, earthquake geology, fault, slip rate, western United States, Fewer tags