Which term refers to any fault that showed evidence of displacement during the Quaternary time and is no longer used on AP maps?

The term that refers to any fault that showed evidence of displacement during the Quaternary time and is no longer used on AP maps is accurately identified as "Potentially Active Fault." This designation is used in geology to specify faults that have exhibited movement in the recent geological past, specifically during the Quaternary Period, which spans the last 2.6 million years, including significant geological and seismic events.

In the context of fault classifications, a fault considered potentially active implies that it may still have the capacity for future movement, warranting careful monitoring and consideration regarding land use and construction in seismically active regions. This contrasts with terms like "inactive" or "permanently inactive," which imply that the fault is highly unlikely to experience any new displacement.

Understanding the implications of the term "potentially active fault" is crucial for assessments of seismic risk, land-use planning, and construction practices. Quaternary faults are particularly significant in California due to the state’s seismic activity, highlighting the need for a clear understanding of the terms used in geological studies and regional safety planning.