No description available.

The primary objective of this study is to describe the life history of Camelobaetidius mexicanus living in Honey Creek in south central Oklahoma. Specific objectives were to determine emergence phenology and behavior, describe nupital flight and female oviposition, measure subimaginal and imaginal life spans, examine egg morphology and time to hatching, describe larval microdistribution, analyze gut contents and to determine voltinism from nymphal head capsule widths and adult emergence.

Several volcanic flows lie between Death Creek and Dairy Valley Creek, near Etna, Utah. The major, central portion of the volcanic flows is composed of dacite and dacite vitrophyre. An elongate ridge in the southeastern corner of the study area and several small outcrops in Death Creek Valley are composed of rhyolite and rhyolite vitrophyre. Additional rock types include conglomerate, volcanic ash, and tuffaceous sedimentary rock of the Tertiary Salt Lake Formation, Paleozoic limestone, and Tertiary basalt. Dacite and dacite vitrophyre samples are porphyritic, containing phenocrysts of plagioclase, quartz, biotite, amphibole, orthopyroxene, and iron-titanium oxides. Rhyolite and rhyolite vitrophyre samples are porphyritic, containing phenocrysts of plagioclase, alkali feldspar, quartz, and iron-titanium oxides, with minor amounts of biotite and amphibole. Plagioclase phenocrysts are complexly twinned, zoned, and corroded in dacitic samples; whereas, they are simply twinned, unzoned, and uncorroded in rhyolitic samples . Quartz and alkali feldspar phenocrysts contain glass-filled inclusions and are subrounded in rhyolitic samples. Average chemical analyses of five dacitic sample yield weight percent: SiO2, 69.11; TiO2, 0.31; Al2O3, 14.18; Fe2O3, 1.26; FeO, 1.23; MnO, 0.04; MgO, 0.54; CaO, 2.27; Na2O, 3.30; K2O, 4.07; P2O5, 1.23; H2O+, 1.89; H2O-, 0.46; total, 99.27. Average chemical analyses of three rhyolitic samples yield weight percent: SiO2, 76.66; TiO2, 0.12; Al2O3, 11.80; Fe2O3, 0.58; FeO, 0.43; MnO, 0.01; MgO, 0.09; CaO, 0.78; Na2O, 2.69; K2O, 5.26; P2O5, 0.02; H2O+, 1.17; H2O-, 0.22; total, 99.85. The volcanic flows of the study area are believed to be derived from fusion of sialic material within the crust which differentiated to form dacite and rhyolite. The dacite is believed to be the first magma extruded in the study area; whereas, the rhyolite represents the later extruded magma. Evidence supporting this relative emplacement is the restriction of rhyolite to the southeastern corner of the study area and the intrusion of rhyolite into dacite in the narrows of Death Creek Valley. The volcanic flows of the study area are believed to have been derived during the second stage of Basin and Range volcanism beginning approximately 14 million years ago. The study area rhyolite has chemical compositions similar to those rhyolites of bimodal basalt-rhyolite fields formed during the second stage of Basin and Range volcanism which includes high silica contents, higher alkali to calcium ratios, and greater sodium contents compared with rhyolite of calc-alkalic fields.

The inadequacy of water and power supplies in Utah for agriculture, for industry, for domestic and community consumption has retarded the State's economic growth. Shortages of water and hyroelectric power are the principle impediments to the full realization of other potentials of Utah, that is, the full use of its arable lands, the wide and diversified use of its industrial raw materials, and the unrestricted development of its communities. The problem of securing additional sources of water and power has resolved itself into one of major concern. The objective of this study was to determine unit values of consuptive use of water by the major crops (alfalfa, small grains, and pasture) in the Ashley and Ferron Creek Areas of Utah. The consumptive use by the individual field crops was based on measurements of the depletion of moisture in the soil. Evapo-transpiration tank experiments were conducted in Ashley Valley throught the growing season and the volumes of water consumed were measured directly. Yield data were obtained from field samples and comparisons between yield and consumptive use were observed.

This study uses a spatial model to visualize LWD mobility areas in an approximate 1km reach of Cummins Creek, a fourth-order stream flowing through an old-growth Sitka spruce-western hemlock forest in the Oregon Coast Range. The model solves a LWD incipient motion equation for nine wood size combinations (0.1m, 0.4m, 1.7m diameters by 1.0m, 6.87m, 47.2m lengths) during the 2-year, 10-year, and 100-year discharge events. Model input variables were derived from a combination of field survey, remotely sensed, and modeled data collected or derived between June 2010 and July 2011. LWD mobility map results indicate the 2-year discharge mobilizes all modeled diameters, but mobile piece lengths are shorter than the bankfull channel boundary. Mobility areas for each wood size combination increases with discharge; 10-year and 100-year discharge events mobilize wood longer than average bankfull width within a confined section of the main stem channel, and mobilize LWD shorter than bankfull width within the main stem channel, side channels, and floodplain. No discharge event mobilizes the largest LWD size combination (1.7m / 47.2). Recruitment process was recorded for all LWD during June 2010, revealing that all mobile wood in the study reach was shorter than bankfull width. Based on these conflicting results, I hypothesize the distribution of wood in Cummins Creek can be described in terms of discharge frequency and magnitude, instead of as a binary mobile/stable classification. Mobility maps could be a useful tool for land managers using LWD as part of a stream restoration or conservation plan, but will require additional calibration.

This thesis is concerned with the fisheries of Deer Creek Reservoir, Wasatch County, Utah, with special emphasis on the yellow perch. The study period was from May 13 to November 24, 1968. Objectives included the determination of size, age, and food habits of the yellow perch. Parasitic occurrences in the perch population by Ligula intestinalis were also recorded as well as the utilization of the perch by the fishermen. Observations on other species of fish including an analysis of rainbow trout stocking programs were also objectives of this thesis. Data was gathered by means of creel census and fish collection techniques. Collections were made by use of seine, hook and line, shocking and experimental gill nets.

No description available.

No description available.

The Goose Creek area in parts of Roanoke, Botetourt, and Bedford counties, Virginia, comprises about 170 square miles of complexly folded and faulted Precambrian and Paleozoic rocks of the Blue Ridge and Great Valley physiographic provinces. The Precambrian rocks are divided into three different types of gneisses on the basis of their textures. These are unconformably overlain by Cambrian rocks of the Unicoi formation, Hampton shale, Erwin quartzite, Rome formation, Bilbrook dolomite, and Conococheague formation. The total thickness of the Precambrian gneisses is about 7,500 feet and that of Cambrian formation is 10,000 feet. The Ordovician Bffna and Fetzer limestones are about 30 feet thick and the Liberty Hall and Martinaburg shales are about 800 feet thick. Silurian-Lower Devonian rocks represented by the Clinch, Clinton, and Helderberg formations are 15 (?) to 300 feet thick. Additional unclassified shales are of Devonian age. Locally Quaternary deposits of colluvium, older terrace gravels, and alluvium cover all of the above. One of the major structural features of the area is the nearly flat Blue Ridge thrust which extends across most of the area. The Blue Ridge thrust plate is breached by Goose Creek in the southeast -part of the area. The displacement of the thrust is at least six miles. The Precambrian rocks of the Blue Ridge fault block are believed to be the core of a large overturned northeasterly-trending anticlinorium. Many similar northeasterly-trending folds, which are mostly open or only slightly overturned to the northwest, are found in the frontal part of the Blue Ridge thrust plate and in the underlying rocks. A few northwesterly-trending cross folds were developed in rocks both above and below the thrust and were formed contemporaneously or slightly later than the faulting. Another major structure, probably the Pulaski thrust fault, is shown in a window cut by the Salem (?) fault at Coyner Mountain. If the correlation of the Pulaski fault is correct then the minimum displacement must bell miles. Many smaller faults and folds also indicate strong compressive forces in a northwest-southeast direction. The cross folds are believed to have been developed by differential northwesterly movement of the fault blocks. The differential movements are believed to have resulted from deflection around buttresses in the Appalachian Valley, although there is a possibility that the deforming force shifted to a more westerly direction. The Blue Ridge province is represented by resistant parts of the uneroded Blue Ridge thrust block. The Great Valley province in the northwest part of the area is underlain by soft shales and carbonate rocks and has encroached on the edge of the Blue Ridge thrust plate. Southwestward-flowing Glade Creek and its main drainage area is similar to the Great Valley in physiography and type of bedrock. It extends northeast into a breached area of the Blue Ridge thrust where its headwaters are captured by southeast-flowing Goose Creek. The geologic history of the Goose Creek area can be summarized as follows: (1) deposition of Late(?) Precambrian sediments; (2) folding and faulting of the Precambrian rocks accompanied by metamorphism, granitization, and intrusion that probably occurred during or prior to a sub-Cambrian orogeny which may have produced the configuration of the Appalachian geosyncline; (3) cannibalism during earliest Cambrian time, supplying the lowest Cambrian elastic sediments; (4) deepening of the Appalachian geosyncline to receive the thick carbonate sediment from Lower Cambrian to Middle Ordovician; (5) resumption of cannibalism on the elevated lands to the southeast from Middle Ordovician to Lower Mississippian time, supplying younger clastic sediments; (6) folding and faulting of the Precambrian and Paleozoic rocks during the Appalachian orogeny; (7) peneplanation of the newborn Appalachian at the summit level of the Blue Ridge mountains in Tertiary(?) time; and (8) intermittent uplifting, trenching,and tilting of the peneplain and other ero~ion surfaces from Tertiary(?) to the present. The mineral resources include limestone, dolomite, iron and shale. Once productive low-grade iron deposits are now no longer profitable. The ground water supply is plentiful and a potential asset for industry. The beat aquifers are the unconsolidated deposits and some of the carbonate rocks of the Elbrook and Rome formations. / Ph. D.

This study evaluated the effects of a major chlorine disturbance on fish communities in Pecan creek by the City of Denton's Pecan Creek Water Reclamation Plant. Fish communities in Pecan Creek were sampled using a depletion methodology during February, April, July, and November, 1999. February and April sampling events showed that the fish communities were severely impacted by the chlorine. Sampling during July and November showed fish communities recovered in Pecan Creek. The first-twenty minutes of shocking and seining data were analyzed to mirror an equal effort methodology. This methodology was compared to the depletion methodology to see if the equal effort methodology could adequately monitor the recovery of Pecan Creek after the chlorine disturbance. It was determined that the equal effort methodology was capable of monitoring the recovery of Pecan Creek, but could not accurately represent the fisheries community as well as the depletion method. These data using the twenty-minute study were compared to a previous study. Results of this study were similar to those found in a previous study, although fish communities were more severely impacted and took longer to recover.