Physical Sciences and Mathematics Commons^™

Net Shore-Drift Of King County, Washington, Michael Chrzastowski

WWU Graduate School Collection

King County has a 182 km, crenulated coastline along the glacially formed channels of Puget Sound. This distance is nearly evenly divided between the mainland and two islands, Vashon and Maury. This field study determined the long-term net shore-drift along the King County coast, primarily using geomorphic and sedimentologic indicators of net shore-drift. The shore-drift sediment is mainly sand and gravel supplied from coastal bluffs by wave erosion, mass wasting, and fluvial processes. There are a total of 46 drift cells, with shore-drift operating along all of the King County coast except for 9 km of artificially modified, commercial and …

Palynological Differences Between The Chuckanut And Huntingdon Formations, Northwestern Washington, Kenneth Norman Reiswig

WWU Graduate School Collection

Pollen and spore assemblages from the Tertiary coal-bearing Chuckanut and Huntingdon Formations were studied to determine the existence and location of the southern boundary of the Bellingham Basin. Ages of deposition were determined for each formation based on the flora recovered. The age of the Chuckanut Formation ranges from Middle Paleocene at its base to Late Eocene at its top. The age of the Huntingdon in northwestern Washington is Late Eocene to perhaps Earliest Oligocene. From the evidence of palynomorph ranges, no definite age breaks were found within the Chuckanut Formation, or between the Chuckanut and Huntingdon Formations. The structure …

Tertiary Volcanic Rocks In Southwest Montana And Adjacent Idaho As Possible Source Rocks For Epigenetic Stratabound Uranium Deposits, Richard Brian Wice

WWU Graduate School Collection

Rhyolitic volcanic and volcaniclastic rocks found in or on the margins of Tertiary basins that contain sandstone-type uranium deposits are considered by many workers to be the source rocks for the uranium. In southwestern Montana and adjacent Idaho three volcanic areas were mapped and evaluated by geochemical analysis. X-ray diffraction and petrographic studies to determine if the volcanics are good source rocks for uranium deposits in nearby Tertiary basins. Area I volcanics, south of Dillon, Montana, have radiometric ages, uranium, thorium and fluorine contents and petrography similar to the Post-Lowland Creek Volcanics in the Boulder Batholith region and are tentatively …

Quaternary Chronology Of The Palouse Loess Near Washtucna, Eastern Washington, Lucy L. (Lucy Louglin) Foley

WWU Graduate School Collection

Four roadcuts in the Palouse loess near Washtucna, southeastern Washington, expose a thick sequence of buried calcic soils and tephra layers which span more than the last 730,000 years. The identification of four tephra layers of known age in the upper part of the loess sequence

(Mazama, Mt. St. Helens Set S, and two separate layers of Mt. St. Helens Set C) allow the formulation of a soil chronology for the last 40,000 years. Paleomagnetic stratigraphy resulted in the identification of the Brunhes Normal-Matuyama Reversed polarity epoch boundary in one roadcut, thereby establishing an age of at least 730,000 years …