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Portland Hills Fault

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Geologic fault in Oregon, United States
Portland Hills Fault using data from USGS and OpenStreetMap. Made using QGIS

The Portland Hills fault zone is the largest shallow fault that cuts beneath Portland, Oregon. It stretches from Oregon City to Scappoose, and has a zone of deformation that extends at least 1,300 feet (400 m).

References

  1. Joe Rojas-Burke (February 23, 2011). "Comparing Portland's quake risk to that of devastated Christchurch, New Zealand". The Oregonian.
  2. Liberty, Lee M; Hemphill-Haley, Mark A; Madin, Ian P (2003). "The Portland Hills Fault: uncovering a hidden fault in Portland, Oregon using high-resolution geophysical methods". Tectonophysics. 368 (1–4): 89–103. Bibcode:2003Tectp.368...89L. doi:10.1016/S0040-1951(03)00152-5.
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