Strike-Slip Fault Characteristics

Strike-slip faults are tectonic features where the Earth's crust moves horizontally relative to each other. Several landforms are characteristic indicators of their presence and activity.

Features Associated with Strike-Slip Faults

• Offset Drainage: The horizontal movement along a strike-slip fault can displace streams and rivers, causing their channels to appear 'offset' or bent where they cross the fault trace. This is a common and direct indicator.
• Shutter Ridge: When a strike-slip fault displaces a stream valley, the fault scarp can act as a barrier, blocking the valley and forming a ridge that 'shuts off' the original drainage path. This is a distinctive feature.
• Sag Pond: These are small depressions that form in fault zones, often due to the complex deformation and subsidence associated with strike-slip faulting, or where blocked drainage creates a pool. They are frequently found along active strike-slip faults.

Feature Not Typically Associated: Barbed Drainage

Barbed drainage refers to a pattern where tributaries flow into a main river channel and then turn sharply upstream (forming a 'barb' shape). This pattern is most commonly associated with:

• Glacial processes, where ice flow can alter drainage patterns.
• Headward erosion and stream capture, where one river system erodes backward and intercepts the flow of another.

While complex interactions can occur in any landscape, barbed drainage is not a primary or typical geomorphological indicator directly caused by the horizontal displacement characteristic of strike-slip faults, unlike offset drainage or shutter ridges.

Therefore, Barbed drainage is the feature not typically associated with strike-slip faults.