Search results
Results from the WOW.Com Content Network
The Brothers Fault Zone is also the locus of the High Lava Plains (HLP) volcanism of central and southeastern Oregon. HLP volcanism is notable for showing an age progression from 16 Ma at its eastern end (near the Oregon–Nevada–Idaho corner) to the active Newberry Volcano at its western end.
The Oregon Department of Emergency Management estimates shaking would last 5–7 minutes along the coast, with strength and intensity decreasing further from the epicenter. [1] It is a very long, sloping subduction zone where the Explorer , Juan de Fuca , and Gorda plates move to the east and slide below the much larger mostly continental North ...
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]
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 Blanco fracture zone between the Gorda Ridge and the Juan de Fuca Ridge. The Blanco fracture zone or Blanco transform fault zone (BTFZ) is a right lateral transform fault zone, which runs northwest off the coast of Oregon in the Pacific Northwest of the United States, extending from the Gorda Ridge in the south to the Juan de Fuca Ridge in the north.
A map of the Juan de Fuca plate with noted seismic incidents, including the 2001 Nisqually earthquake. The Juan de Fuca plate is bounded on the south by the Blanco fracture zone (running northwest off the coast of Oregon), on the north by the Nootka Fault (running southwest off Nootka Island, near Vancouver Island, British Columbia) and along the west by the Pacific plate (which covers most of ...
Abert Rim in Lake County, Oregon is one of the highest fault scarps in the United States. It rises 2,490 feet (760 m) above the valley floor, finishing with an 820-foot (250 m) sheer-sided basalt cap. It was formed during the Miocene epoch. At that time basaltic flood lavas covered much of eastern Oregon.
A similar line aligns with the termination of the WRZ, SHZ, and Gales Creek Fault Zone (northwest of Portland), with faulting along the upper Nehalem River on the Oregon coast, [211] and a topographical contrast at the coast (between Neahkahnie Mountain and the lower Nehalem River valley) distinct enough to be seen on the seismicity map above ...