1989/01/01 by Susan V. Hartford, William D. McFarland · 3 citations
Environmental Science · Social Sciences · #Aquifer #Archaeology and Natural History #Facies #Geochemistry #Geology #Geomorphology #Geotechnical engineering #Groundwater #Groundwater flow and contamination studies #Hydrogeology #Hydrology (agriculture) #Lithology #Overbank #Sedimentary rock #Water Quality and Resources Studies #Water table
paper · pdf · doi:10.3133/wri884110
openalex publication_date 1989/01/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/11
The lithology, thickness, and extent of eight distinct hydrogeologic units are described and mapped within the study area. These units underlie the East Portland area of northwestern Oregon. The thickness, extent, and top of each unit are shown on contour maps at scales of 1:24,000. Their stratigraphic relations are displayed on a diagrammatic cross section. The geologic setting and unit lithology are described in the text. A data table presents information on each well or boring that was used for determining the thickness, extent, and lithology of each hydrogeologic unit.