HIFLD OPEN Quaternary Fault Lines

Principal Investigator(s):  View help for Principal Investigator(s) U.S. Geological Survey; Department of Homeland Security

Version:  View help for Version V1

Name File Type Size Last Modified
metadata.xml application/xml 9.5 KB 11/06/2025 07:35:PM
quaternary-fault-lines-geojson.zip application/zip 19 MB 11/06/2025 07:38:PM
quaternary-fault-lines-shapefile.zip application/zip 15.1 MB 11/24/2025 10:05:AM

Project Citation: 

U.S. Geological Survey, and Department of Homeland Security. HIFLD OPEN Quaternary Fault Lines. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2025-11-25. https://doi.org/10.3886/E240586V1

Project Description

Project Title:  View help for Project Title HIFLD OPEN Quaternary Fault Lines
Summary:  View help for Summary 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 to determine the time and magnitude of ancient earthquakes. These studies extend the historical earthquake record by hundreds of thousands of years and are indispensible in calculating future seismic hazard posed by the thousands of faults in the United States. The data are accessed through search pages or an interactive map service. The work of the USGS and its cooperators in developing this database is only one part of the ongoing USGS efforts to protect lives and property from future earthquakes throughout the United States.
Original Distribution URL:  View help for Original Distribution URL https://hifld-geoplatform.hub.arcgis.com/

Scope of Project

Subject Terms:  View help for Subject Terms HIFLD Open; GIS; Geologic Hazards Science Center; GHSC; Earthquake Hazards Program; earthquake hazard; seismology; seismic hazard; earth science; geophysics; Quaternary; Fault; Natural Hazards; HIFLD; Feature Service; SDI; NSDI; Open Data; FGDC; Emergency Preparedness; Disaster Planning; Infrastructure
Geographic Coverage:  View help for Geographic Coverage United States
Time Period(s):  View help for Time Period(s) 3/12/2024 – 3/12/2024
Data Type(s):  View help for Data Type(s) geographic information system (GIS) data
Collection Notes:  View help for Collection Notes Archived from the HIFLD Open GIS data repository, which was deactivated on August 26, 2025. (Downloaded 08/26)


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V1 [2025-11-25]

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