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Indicator species
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Oregon
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Sedimentary Rocks
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Sedimentology
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PDX Scholar
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1. [Article] Stratigraphy and sedimentation of the Spencer Formation in Yamhill and Washington counties, Oregon
The Spencer Formation in Yamhill and Washington Counties, Oregon, is exposed in a narrow belt 27 km long, from 1/4 to 3 km wide and with a maximum thickness of about 400 m. The formation is composed entirely ...Citation