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An earthquake fault is a fracture in the earth's crust between two plates of rock. These fractures allow the plates to shift relative to each other along the fault line.

en.wikipedia.org/wiki/Fault_(geology)

In geology, a fault is a planar fracture or discontinuity in a volume of rock, across which there ... Energy release associated with rapid movement on active faults is the cause of most earthquakes. A fault plane is the plane that represents the ...

earthquake.usgs.gov/hazards/qfaults/map

Leaflet | Content may not reflect National Geographic's current map policy. Sources: National Geographic, Esri, DeLorme, HERE, UNEP-WCMC, USGS, NASA, ...

earthquake.usgs.gov/learn/glossary/?term=fault

A fault is a fracture along which the blocks of crust on either side have moved relative to one another parallel to the fracture.

earthquake.usgs.gov/hazards/qfaults

This database contains information on faults and associated folds in the United States that demonstrate geological evidence of coseismic surface deformation in  ...

maps.conservation.ca.gov/cgs/fam

Skip to Main Content. CA.gov. California Department of Conservation. Menu Contact Search. Search this site: Search. Home · Earthquakes · Geologic Hazards ...

www.earthquakecountry.org/roots/basics.html

This section describes how earthquakes happen and how they are measured. ... An earthquake is caused by a sudden slip on a fault, much like what happens ...

www.iris.edu/hq/files/programs/education_and_outreach/aotm/2/EarthquakeFaults_Background.pdf

Earthquake Faults. Background page to accompany the animations on the website: IRIS Animations. Introduction. What is a fault? A fault is a rock fracture where ...

www.gns.cri.nz/Home/Learning/Science-Topics/Earthquakes/Earthquakes-and-Faults

A fault line is a fracture along which the crust has moved. Stresses in the crust along New Zealand's plate boundary have broken it into separate fragments or ...

news.nationalgeographic.com/news/2014/01/140115-earthquakes-california-faults-science

Jan 15, 2014 ... What was that you felt? Faults deep underground produce different kinds of earthquakes.