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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. [1] It stretches from Oregon City to Scappoose, and has a zone of deformation that extends at least 1,300 feet (400 m). [2]
Simplified fault map of southern California The faults of Southern California viewed to the southeast, as modeled by the Southern California Earthquake Center. Highlighted in purple are the San Andreas Fault (left) and Santa Monica Bay complex (right). The foreground is in the Santa Barbara Channel, the east-trending zone marks the Transverse ...
The Portland/Vancouver Basin ecoregion (named for the cities of Portland and Vancouver) is a geological depression at the base of the Portland Hills fault-block. It contains the confluence of the Willamette and Columbia Rivers and is composed of deltaic sands and gravels deposited by Pleistocene floods, notably the Missoula Floods. Elevation ...
The Puente Hills thrust fault is the same overall fault network that produced the Whittier Narrows – which measured a 5.9 magnitude, killed eight people and caused some $358 million in damage in ...
The USGS and the Southern California Earthquake Center in 2005 said that a magnitude 7.5 quake on that fault system, which runs underneath downtown and broad swaths of Southeast L.A. County, the ...
From the north these are (see the map at right): Devils Mountain Fault zone (including Strawberry Point and Utsalady Point faults) ∪ Everett Basin. Southern Whidbey Island Fault (SWIF) ∩ "Uplift of unknown origin" (Port Ludlow) Kingston arch (Lofall Fault [22]) ∪ Seattle Basin. Seattle Fault zone (approx. lines E-F) ∩ Seattle Uplift
A fault off the Pacific coast could devastate Washington, Oregon and Northern California with a major earthquake and tsunami. Researchers mapped it comprehensively for the first time.
The fault runs from the mountainous Peninsular Ranges region between El Centro and San Diego, northwest to the Chino Hills range and Chino Hills.On the southern end of the fault zone is the southeastern extension of the Elsinore fault zone, the Laguna Salada Fault.