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Tectonic setting of the Portland-Vancouver area, Oregon and Washington: constraints from low-altitude aeromagnetic data

Geological Society of America Bulletin

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Abstract

Seismic activity in the Portland-Vancouver metropolitan area may be associated with various mapped faults that locally offset volcanic basement of Eocene age and younger. This volcanic basement is concealed in most places by young deposits, vegetation, and urban development. The US Geological Survey conducted an aeromagnetic survey in September 1992 to investigate the extent of these mapped faults and possibly to help identify other seismic and volcanic hazards in the area. The survey was flown approximately 240 m above terrain, along flight lines spaced 460 m apart, and over an area about 50 ?? 50 km. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Tectonic setting of the Portland-Vancouver area, Oregon and Washington: constraints from low-altitude aeromagnetic data
Series title:
Geological Society of America Bulletin
Volume
107
Issue:
9
Year Published:
1995
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geological Society of America Bulletin
First page:
1051
Last page:
1062