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fault

fault

55 6.1
A crack in the earth's crust where the ground has moved
  • noun
  • /fɔlt/
  • Specialized
: falla
  • Of course this place is built on a fault line.
  • a fault line
  • San Andreas fault
  • earthquake on a fault

Examples

  • In order to split this rock on the fault line, we're gonna have to drill to 800 feet.

  • Studies using this technique indicate that earthquakes along California's San Andreas fault have occurred more frequently than previously estimated.

    Academic text (1999)
  • Maybe the fault line runs just directly under our house.

  • It's like a theme park built on a fault line.

  • Today, rising house prices around the world have become a new fault line in politics, and it's one with unpredictable consequences.

  • Nothing is better designed to expose the fault lines of British society than the debate over educational standards.

    Academic text (1994)
  • The magnitude 5.5 earthquake hit just north of the Puente Hills fault less than an hour ago.

  • The school sat on a cultural fault line between federal assimilation and tribal self-determination.

    Academic text (2008)
  • In general, both countries have a very strong Shia Sunni tension on the fault line of sectarian division.

  • The geologist explained how the earthquake was caused by movement along a fault in the earth's crust.

Synonyms

fault line
vsfault
  • Specialized
23 4.7

A crack in the ground where the land moves, often causing earthquakes

refers to the crack itself beneath the surface rather than the visible trace
thrust fault
vsfault
  • Specialized
1 8.1

A break in rocks where the top part moves up over the lower part

is the basic name for any displaced crust crack beyond compression detail
geological fault
vsfault
  • Specialized
1 5.0

A crack in the Earth's crust where rock layers move

is the general label for any crack with movement in the crust
strike-slip fault
vsfault
  • Specialized
1 7.4

A break in the ground where two rock blocks move past each other horizontally

is the umbrella term that includes both vertical and horizontal displacements
normal fault
vsfault
  • Specialized
1 7.0

A sloping break in the Earth's crust where the upper side moves down past the lower side

is the general crust crack term that covers many movement directions
overthrust fault
vsfault
  • Specialized
1 9.6

A break in rock where strong sideways force pushes one rock layer up and over another

is the broader name for any crack with relative rock movement
inclined fault
vsfault
  • Specialized
1 9.0

A break in the ground where one side moves up at an angle

is the broader term for any crack with movement, not only angled ones
gravity fault
vsfault
  • Specialized
8.7

A sloping break in rock where the upper block moves down because of its weight

covers all crust cracks causing displacement, not only those driven by gravity

Idioms

60 3.4

Responsible for causing a problem or mistake and deserving blame

16 7.1

Very much of a good quality so it becomes a problem

2 7.4

Telling the truth even when it causes problems or hurts people

Very kind in a way that causes problems for the person giving

Compounds

fault line
  • Specialized
23 4.7

A crack in the ground where the land moves, often causing earthquakes

A long crack in the ground in California that causes earthquakes

double fault
  • Jargon
2 2.8

Two bad serves in a row that make the player lose the point

no fault insurance
  • Specialized
1 4.3

A system where each driver's own plan pays for their crash costs no matter who caused it

thrust fault
  • Specialized
1 8.1

A break in rocks where the top part moves up over the lower part

1 5.6

Car insurance where each driver gets money from their own insurance company after a crash, no matter who caused it

geological fault
  • Specialized
1 5.0

A crack in the Earth's crust where rock layers move

strike-slip fault
  • Specialized
1 7.4

A break in the ground where two rock blocks move past each other horizontally

normal fault
  • Specialized
1 7.0

A sloping break in the Earth's crust where the upper side moves down past the lower side

reverse fault
  • Specialized
1 8.3

A break in rock where one side moves up when the land is pushed together

common fault
  • Specialized
1 7.8

A break in rock where the top part moves down past the lower part

overthrust fault
  • Specialized
1 9.6

A break in rock where strong sideways force pushes one rock layer up and over another

Denali Fault
  • Specialized
1 7.9

A long crack in the ground in central Alaska that makes earthquakes

inclined fault
  • Specialized
1 9.0

A break in the ground where one side moves up at an angle

gravity fault
  • Specialized
8.7

A sloping break in rock where the upper block moves down because of its weight

Surface Forms

fault singular
faults plural

Etymology

Fault comes from Old French faute, from a Latin verb that meant 'to fail', like the English word fail. In geology a fault is a crack where the ground has 'failed' and moved, so the name shows the earth has broken or slipped there.