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An Analysis Of Gravity Surveys In The Portland Basin, Oregon, Janice C. Perttu
An Analysis Of Gravity Surveys In The Portland Basin, Oregon, Janice C. Perttu
Dissertations and Theses
The geologic setting of the Portland Basin is ideal for gravity surveys because of the large density contrasts between geologic units. The Portland Basin consists of a north-northwest-trending syncline in the Columbia River basalt overlain by Pliocene to Recent alluvium. This study was undertaken to define structures in the Portland Basin which are obscured by the alluvium.
An areal gravity survey of the Portland Basin covering approximately 450 square kilometers was conducted for this study.