Periodic violent eruptions from many different centers during Cenozoic time deposited vast quantities of pyroclastic material as ash-flow tuffs over most of Oregon, although the Coast Ranges and isolated patches elsewhere in the state appear to have been spared these recurring inundations. Eruptions occurred at different times throughout the Cenozoic,...
The impact of Oregon's Special Use Assessment (SUA)
program was analyzed in relation to farmland values in six
regions. Data for the study were obtained from the Oregon
Landownership Survey. Data were based on 1975 assessment
and ownership characteristics.
Farmland value per acre, including improvements, was
believed to be influenced...
Purpose: This investigation was conducted to determine
whether or not teachers and students perceive the environmental press
of a secondary school differently, and whether or not teacher groups
and student groups vary in their perceptions.
Conceptual Framework: "Press" i s a construct which expresses
the assumption of elements in the...
Seismic refraction, reflection and gravity data obtained
across the Peru continental margin and Nazca Plate
at 9° S. permit a detailed determination of crustal structure.
Complex structures normal to the profile require the
development of a ray trace technique to analyze first and
later arrivals for eleven overlapping refraction lines....
While the public trust doctrine at common law placed effective limitations on the Crown, these limitations have been somewhat obscured by state court decisions in the United States. Though some courts have suggested that the public trust places limitations or the power of the legislature to convey lands beneath navigable...
Oregon Biography Index is intended to serve primarily as a starting point in locating biographies of Oregonians. We have indexed 47 historical volumes which are either entirely devoted to biographies or have large self-contained biographical sections. The profiles in the books vary widely in accuracy and detail. Birth dates of...
Research activities in the post-IBP phase of the Biome program prior to July 1975 were reported in Internal Report 162. Summaries of research and synthesis activities from July 1975 to August 1976 are presented here. The reports are arranged in the following order: Analysis of individual terrestrial ecosystems, which has...
The North American species of the shore fly genus Notiphila Fallen were taxonomically revised. Over 13,000 specimens were examined from throughout the Nearctic Region and information relating to the biology of many species occurring in the West was gathered from both field and laboratory studies. Previously used characters were reevaluated;...