Index Catalog // ScholarsArchive@OSU

Geology of the rattlesnake and older ignimbrites in the Paulina Basin and adjacent area, central Oregon

Creator:: Davenport, Ronald Edmond
Resource Type:: Dissertation

Geology, structure, and tectonic history of the Tualatin Basin, northwestern Oregon

Creator:: Popowski, Thomas Allan
Abstract:: The northwest-trending Neogene Tualatin basin in northwestern Oregon is a pull-apart basin with approximately 750 m of post-middle Miocene structural relief. Gently tilted uplands capped by Columbia River Basalt Group surround the synclinal basin on all sides. Integrated gravity, aeromagnetic, and seismic reflection data indicated that the basin is underlain...
Resource Type:: Masters Thesis

Geology of the Clarno Basin Mitchell quadrangle, Oregon

Creator:: Taylor, Edward M., 1933-
Abstract:: In the area surrounding Clarno, Oregon, pre-Cretaceous metamorphics, Cretaceous marine sediments, and a varied assemblage of Tertiary volcanic rocks are known. The oldest exposures are of an homogeneously fine-grained, mildly metamorphosed, limy shale to which the term "Muddy Ranch phyllite" is applied. Non-metamorphosed, Cretaceous marine shales and graywackes, approximately 1500...
Resource Type:: Masters Thesis

Geology of the Clarno Formation in the vicinity of Stephenson Mountain, Jefferson, Crook and Wheeler counties, Oregon

Creator:: Stroh, Harold Raymond
Abstract:: The thesis area is located in north-central Oregon approximately 20 km west of the town of Mitchell. The rocks exposed in the area belong to the Clarno Formation. This study supports the informal reclassification of the Clarno to Group status, composed of an Upper and Lower Clarno Formation. An angular...
Resource Type:: Masters Thesis

The geology of Alkali Lake basin, Oregon

Creator:: Mundorff, Norman Lloyd
Resource Type:: Masters Thesis
Full Text:: The geology of Alkali Lake basin, Oregon THJ GEOLOGY OF

Extension and volcanism : tectonic development of the northwestern margin of the Basin and Range Province in southern Oregon

Creator:: Scarberry, Kaleb C.
Abstract:: The northwestern corner of the Basin and Range Province (NWBR) lies in southeast Oregon where extensive Late Miocene, mafic to bimodal basalt-rhyolite volcanism and extensional faults dominate a stark and arid landscape. Near Lake Abert, the Late Miocene volcanic section abuts Early Miocene, dominantly intermediate composition volcanoes at the Coleman...
Resource Type:: Dissertation
Full Text:: Northwestern Margin of the Basin and Range Province in Southern Oregon By Kaleb C. Scarberry

Stratigraphy, sedimentology, and hydrocarbon potential of Eocene forearc and subduction zone strata in the southern Tyee Basin, Oregon Coast Range

Creator:: Ryu, In-Chang
Abstract:: Sequence stratigraphic analysis of the southern Tyee basin, Oregon Coast Range, reveals that the lower to middle Eocene forearc and subduction zone strata comprise four depositional sequences. Sequence I (lower Umpqua Group) represents a partially subducted accretionary wedge. Sequence II (upper Umpqua Group) is a deltaic sequence that filled irregular...
Resource Type:: Dissertation

An ecological study of a disjunct Ponderosa pine forest in the northern Great Basin in Oregon

Creator:: Berry, Dick Wallace, 1914-
Resource Type:: Dissertation

Two-stage opening of the northwestern basin and range in eastern Oregon : evidence from the Miocene Crane basin

Creator:: Milliard, Justin B.
Abstract:: New data are presented that provide evidence for the onset of extensional deformation in the Northwestern Basin and Range within 1 million years after the eruption of the Steens Basalt at 16.5 Ma. New geologic mapping (1:24,000), stratigraphic sections, and ⁴⁰Ar/³⁹Ar dating of the Crane Basin rocks provide a control...
Resource Type:: Masters Thesis
Full Text:: ‐STAGE OPENING OF THE NORTHWESTERN BASIN AND RANGE IN EASTERN OREGON: Evidence from the Miocene Crane

ScholarsArchive@OSU

Geology of the rattlesnake and older ignimbrites in the Paulina Basin and adjacent area, central Oregon

Geology, structure, and tectonic history of the Tualatin Basin, northwestern Oregon

Geology of the Clarno Basin Mitchell quadrangle, Oregon

Geology of the Clarno Formation in the vicinity of Stephenson Mountain, Jefferson, Crook and Wheeler counties, Oregon

The geology of Alkali Lake basin, Oregon

Extension and volcanism : tectonic development of the northwestern margin of the Basin and Range Province in southern Oregon

Stratigraphy, sedimentology, and hydrocarbon potential of Eocene forearc and subduction zone strata in the southern Tyee Basin, Oregon Coast Range

An ecological study of a disjunct Ponderosa pine forest in the northern Great Basin in Oregon

Two-stage opening of the northwestern basin and range in eastern Oregon : evidence from the Miocene Crane basin

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