Definition

Noun: A strike-slip fault is a type of geological fault where the primary movement of the rock on either side of the fracture is horizontal and parallel to the direction of the fault line. The displacement is predominantly lateral, meaning one side slides past the other, with little to no vertical movement.

Usage

The term is used in geology and seismology to describe and classify a major category of fault lines based on the direction of rock displacement. - Scientists identified the San Andreas as a classic strike-slip fault. - The earthquake was caused by movement along a strike-slip fault.

Advanced Usage

• Right-lateral (dextral) strike-slip fault: A fault where, to an observer standing on one side, the block on the opposite side appears to have moved to the right.
• Left-lateral (sinistral) strike-slip fault: A fault where, to an observer standing on one side, the block on the opposite side appears to have moved to the left.

Variants and Related Words

• Fault (n): A fracture or zone of fractures in the Earth's crust along which movement has occurred.
• Transform fault (n): A specific type of strike-slip fault that forms a plate boundary, commonly found on the ocean floor (e.g., connecting segments of a mid-ocean ridge).
• Oblique-slip fault (n): A fault where the movement has both significant strike-slip (horizontal) and dip-slip (vertical) components.

Synonyms

• Transcurrent fault (n): A synonym for strike-slip fault, emphasizing the horizontal, lateral motion.
• Wrench fault (n): Another, less common synonym for a strike-slip fault.

Related Idioms or Phrases

No common idioms or phrasal verbs are directly associated with this specific technical term.

Noun

1. a geological fault in which one of the adjacent surfaces appears to have moved horizontally