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Origin and evolution of the Seattle Fault and Seattle Basin, Washington

Geology

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Abstract

Analysis of seismic reflection data reveals that the Seattle basin (Washington) is markedly asymmetric and consists of ~9-10 km of Eocene and younger deposits. The basin began as a discrete geologic element in the late Eocene (~40 Ma), the result of a reorganization in regional fault geometry and kinematics. In this reorganization, dextral offset on the Puget fault southeast of Seattle stepped eastward, and the Seattle fault began as a restraining transfer zone. North-vergent reverse or thrust faulting on the Seattle fault forced flexural subsidence in the Seattle basin to the north. Offset on the Seattle fault and subsidence of the Seattle basin have continued to the present. -Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Origin and evolution of the Seattle Fault and Seattle Basin, Washington
Series title:
Geology
Volume
22
Issue:
1
Year Published:
1994
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geology
First page:
71
Last page:
74
Number of Pages:
4