Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Degree Field Geosciences Degree Name Master of Science (M.S.) Subject Earthquake hazard analysis -- Oregon -- Willamette River Valley

I. Direction of maximum horizontal compression in western Oregon determined by borehole breakouts. II. Structure and tectonics of the northern Willamette Valley, Oregon

Creator:

Werner, Kenneth Stefan

Abstract:

Elliptical borehole enlargements or "breakouts" caused by systematic spalling of a borehole wall due to regional maximum horizontal stresses were identified in 18 wells drilled in the Coast Range and Willamette Valley of western Oregon. The breakouts generally indicate a NNW to NNE orientation of maximum horizontal compression (oH[subscript max])...

Resource Type:

Masters Thesis