Physical Sciences and Mathematics Commons^™

The Planet, 1996, Fall, Julie Irvin, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Low Temperature Magnetic Properties Of Siderite And Magnetite In Marine Sediments, Bernard A. Housen, S. K. Banerjee, B. M. Moskowitz

Geology Faculty Publications

Low temperature magnetic techniques provide useful tools to detect the presence of magnetite and pyrrhotite in sediments through identification of their low temperature transitions, to determine the amount of ultrafine-grained (superparamagnetic) material in sediments, and can potentially detect the presence of certain types of magnetotactic bacteria. Application of these types of experiments to nannofossil chalks from beneath the Barbados accretionary prism led to some unusual results, which are attributed to the presence of siderite. Thermal demagnetization of low-temperature remanence after cooling in zero field and in a 2.5 T field both displayed large remanence losses from 20 K to 40 …

Late Cenozoic Structure And Tectonics Of The Northern Mojave Desert, Elizabeth R. Schermer, B. P. Luyendyk, S. Cisowski

Geology Faculty Publications

In the Fort Irwin region of the northern Mojave desert, late Cenozoic east striking sinistral faults predominate over northwest striking dextral faults of the same age. Kinematic indicators and offset marker units indicate dominantly sinistral strike slip on the east striking portions of the faults and sinistral-thrust slip on northwest striking, moderately dipping segments at the east ends of the blocks. Crustal blocks ∼7–10 km wide by ∼50 km long are bounded by complex fault zones up to 2 km wide at the edges and ends of each block. Faulting initiated after ∼11 Ma, and Quaternary deposits are faulted and …

A Summer Internship With U.S. Senator Patty Murray - Regional Office, Everett, Washington, Lisa J. (Lisa Jo) Braly

WWU Honors College Senior Projects

During the summer of 1996,1 participated in the US Senate internship program in the Everett Regional office of Senator Patty Murray. This was a fairly new office, having begun only five months before I started in July, as well as a small office. (It had one part- time person, my supervisor, which became two upon my arrival.) There was no precedent for what my job entailed so it was designed as the summer progressed. My supervisor was Jill McKinney, a very friendly and helpful woman who had been in the “political industry of staffing for various Congress-people over the years. …

Naticid Gastropod Prey Selectivity Through Time And The Hypothesis Of Escalation, Patricia H. Kelley, Thor A. Hansen

Geology Faculty Publications

The hypothesis of escalation posits that biologic hazards such as predation have increased during the Phanerozoic. Previously, a survey of drilling frequencies in the Cretaceous and Paleogene of the North American Coastal Plain suggested an episodic pattern of escalation within the naticid gastropod predator-prey system. This study examines escalation from the perspective of naticid prey selectivity. If escalation occurred within the system, less selectivity of prey may be apparent in the Paleogene compared to younger assemblages. We test this hypothesis for four Eocene Coastal Plain assemblages. Contrary to predictions, intraspecific prey size selectivity was well developed for nine of eleven …

Timing Of Latest Eocene Molluscan Extinction Patterns In Mississippi, David M. Hassl, Thor A. Hansen

Geology Faculty Publications

Molluscs removed from 12 bulk samples of the Yazoo Formation (upper Eocene), exposed in a quarry at Cynthia, Mississippi, are similar in com- position and diversity to those found in the underlying upper Eocene Moodys Branch Formation, when dif- ferences in outcrop area are considered (74% of the Yazoo species are also found in the Moodys Branch). This suggests there was no significant extinction during the late Eocene (at the P15/P16 biozone boundary) as has been reported for planktic foraminifera. Only 11.4% of the species from the Yazoo extend into the Oligocene Red Bluff Formation, suggesting a large molluscan extinction …

The Planet, 1996, Spring, Deanna Woolston, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

An Electroabsorption Study Of Porous Silicon, Melanie Fewings

WWU Honors College Senior Projects

Bulk silicon is an indirect band gap material. When carriers are injected into bulk silicon, electron-hole recombination takes place thermally via phonon exchange, and not by emission of photons. Porous silicon, on the other hand, is a fairly efficient emitter of light in the visible region. Much research is currently under way to find out what makes porous silicon able to emit light. One main theory suggests that the energy bands of bulk silicon may be "squeezed" by being quantum confined, and porous silicon is just an array of quantum silicon wires. Another possibility is that defects in the huge …

Huxley Hotline, 1996, March 13, Traci Edge, Huxley College Of The Environment, Western Washington University

Historical Collection of Huxley Newsletters

No abstract provided.

Lake Whatcom Monitoring Project 1994/1995 Report, Robin A. Matthews, Michael Hilles, Geoffrey B. Matthews

Lake Whatcom Annual Reports

This report is part of an on-going series of annual reports and special project reports that document the Lake Whatcom monitoring program.

This work is conducted by the Institute for Watershed Studies and other departments at Western Washington University. The major objective of this program is to provide long-term baseline water quality monitoring in Lake Whatcom and selected tributaries. Each section contains brief explanations about the water quality data, along with discussions of patterns observed in Lake Whatcom.

Huxley Hotline, 1996, January 31, Traci Edge, Huxley College Of The Environment, Western Washington University

Historical Collection of Huxley Newsletters

No abstract provided.

The Planet, 1996, Winter, Deanna Woolston, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Space, Time, And Matter, Henry G. Schwarz

History Faculty and Staff Publications

One of the principal tasks of current cosmology is to determine the amount of matter in the present universe. This task, however, is hampered by two basic errors, one the present method of measuring distances, particularly the reliance on the notion of a "standard candle," and the other the way the amount of matter is estimated, namely, by counting objects in the visi­ble universe and estimating the amount of invisible matter. Underlying these two errors is the failure to study the universe in terms of space-time.

The Origin Of The Rock Lake Stratabound Copper-Silver Deposit, Rock Lake, Montana, Christopher B. (Christopher Borgen) Hemstad

WWU Graduate School Collection

The Rock Lake copper-silver deposit is a zoned, stratiform, red-bed type deposit, occurring within the Revett Formation of the Proterozoic Belt Supergroup. Structurally the deposit occurs in the west limb of an overturned syncline and is bounded to the west by the Rock Lake normal fault and to the east by the Libby Lakes thrust. At Rock Lake the copper-silver minerals are found in a zonally distributed copper-sulfide system consisting of seven gradational zones representing a migrating redox interface. The sulfide system is wedge shaped with a thick pyrite-galena core near the Rock Lake fault. Vertically and horizontally, from the …

Structure And Metamorphism Of The Kwoiek Creek Area, British Columbia, Kristine M. (Kristine Marie) Alvarez

WWU Graduate School Collection

A complex record of orogenesis is preserved in part of a large country rock septum within the southeast Coast Plutonic Complex (CPC) near the Kwoiek Creek area of British Columbia. The study area includes part of the large 90-84 Ma Scuzzy Pluton. Country rock is the Settler Schist near the pluton, and the slightly metamorphosed Permo-Jurassic Bridge River assemblage, a subduction-accretionary complex, and the hemipelagic Cayoosh assemblage. Earliest deformation produced isoclinal folds and an axial planar foliation. Subsequent folds are southwest vergent, and produced a spaced cleavage. High angle reverse faulting along the Bralorne-Kwoiek Creek Fault followed. The area then …