Ground shaking causes most earthquake damage, but surface fault rupture was California’s first statutory natural hazard disclosure. Slippage on a fault deep within the earth can break through the ground surface, shifting the landscape and everything else crossing the fault trace – fields, fences, streets, sidewalks, homes, hospitals, and water, sewer and gas pipelines. Active earthquake fault zones are a material fact in real estate.

Hosted by Geologist Patrick McClellan, B.Sc., M.A., CA PG# 3854