Geology Reference
In-Depth Information
The first geologic map exclusively of Oregon by Ellen Condon McCornack, 1906.
of Oregon
for these years. The emphasis was still on the
mining industry in both geologic literature and research
with 77 articles on gold, 78 on chromite, and a surge of
papers on oil and gas (113) led by the State Depart-
ment of Geology's reports on Oregon's mineral indus-
try along with other department publications. Those
counties most often cited in the literature were Clacka-
mas, Lake, Lane, Lincoln, Douglas, Baker, and Grant,
which were being closely examined for their economic
resource potential as well as being surveyed for region-
al geologic data. Characteristically Lincoln County was
reviewed for fossil localities, landslide hazards, coastal
geology, agates, and a variety of other subjects. By the
end of the 1950s and 1960s, research in fields of
Oregon geology were becoming more diversified.
Groundwater, volcanology, structural geology, and
petrology were expanding fields of study.
Topics in geologic literature were spread fairly
evenly over broad areas from the 1960s to 1980s.
Approximately 975 citations were on formations, 850
on areas of regional interest, 735 on minerals, 563 on
paleontology, 334 on ground water, 286 on geomor-
phology, 260 on structure, 250 on volcanology, 235 on
tectonics, and 199 on petrology. The total number of
papers for Oregon geology listed in the
Bibliography of
the Geology and Mineral Resources for Oregon
was 4,549
for the 20 year period.
Areas generating the most interest were in
Malheur County (160), Grant (117) and Harney (121)
counties in central Oregon, Klamath (118) and Lake
(146) counties in the south, and Coos (111) and Curry
(130) counties on the coast. Much of the activity was in
regional mapping, structure, stratigraphy, mineral
resources, and paleontology. Volcanism ranked high
