Sep 27, 2022 · Map showing Quaternary faults in the western U.S. and Pacific Ocean. Note that most faults that can affect residents are either onshore or just offshore. The various colors and line types indicate different ages of the most recent earthquakes on the fault and how well the location of the fault is constrained.

In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements.

In order to maintain a current and relevant dataset, effective January 12, 2017, the USGS will maintain a limited number of metadata fields that characterize the Quaternary faults and folds of the United States. Archived reports are accessible from the abbreviated record.

Faults are different from fault lines. A fault is a three-dimensional surface within the planet that might extend up to the surface or might be completely buried. In contrast, a fault line is where the fault cuts the Earth's surface… if indeed it does.

This list covers all faults and fault-systems that are either geologically important [clarification needed] or connected to prominent seismic activity. [clarification needed] It is not intended to list every notable fault, but only major fault zones. [clarification needed] Dextral (?) Strike-slip. ^ "GNS Science, Alpine Fault".

Faults. Powered by Leaflet — Maps provided by MapQuest, OpenStreetMap and contributors., USGS, USGS, Peter BirdLeaflet — Maps provided by MapQuest, OpenStreetMap ...

Jul 12, 2018 · Fault lines represent fracture lines on the surface of the Earth where rocks on either side of the crack have exhibited mechanical movements to release accumulated strain. The resulting fault planes represent the fracture surfaces of a fault.

Feb 1, 2025 · fault, in geology, a planar or gently curved fracture in the rocks of Earth’s crust, where compressional or tensional forces cause relative displacement of the rocks on the opposite sides of the fracture.

Feb 8, 2023 · Faults are fractures in Earth's crust where rocks on either side of the crack have slid past each other. Sometimes the cracks are tiny, as thin as hair, with barely noticeable movement between...

Understanding fault lines is essential for assessing risk and preparing for potential disasters linked to seismic activity. A fault line is a fracture or zone of weakness in the Earth's crust where tectonic plates meet, allowing for the movement and displacement of these plates.