Digital Commons Network^™

Geology And Groundwater Supplies Of Box Butte County, Nebraska, 1979, V. L. Souders, F. A. Smith, J. B. Swinehart

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Collecting In Nebraska's Glacial Deposit, John Boellstorff

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Geology Along The Republican River Valley Near Red Cloud, Nebraska, R. K. Pabian, J. B. Swinehart

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Faulting Patterns In North-Central Nevada And Strength Of The Crust, Mary Lou Zoback, Mark D. Zoback

United States Geological Survey: Staff Publications

NNE normal fault trends characterize much of the northern Basin and Range province. These faults make sharp bends to NNW and ENE trends in north- central Nevada in the vicinity of a mid-Miocene rift characterized by a zone of diabase dike swarms, graben-filling flows, and a coinciding aeromagnetic anomaly. Despite a roughly 45 ° change in the least principal stress direction since mid-Miocene time, pre-existing NNW- and ENE-trending faults in the vicinity of the rift accommodated the extension whereas regionally, major crustal blocks were faulted along a NNE trend, approximately perpendicular to the modern least principal stress direction. An assumed …

The Effect Of Dissolution Of Volcanic Glass On The Water Chemistry In A Tuffaceous Aquifer, Rainier Mesa, Nevada, Art F. White, Hans C. Claassen, Larry Benson

United States Geological Survey: Staff Publications

Geochemistry of ground water associated with the Tertiary tuffs within Rainier Mesa, southern Nevada, was investigated to determine the relative importance of glass dissolution in controlling water chemistry. Water samples were obtained both from interstitial pores in core sections and from free-flowing fractures. Cation compositions showed that calcium and magnesium decreased as a function of depth in the mesa, as sodium increased. The maximum effect occurs within alteration zones containing clinoptilolite and montmorillonite, suggesting these minerals effectively remove bivalent cations from the system.

Comparisons are made between compositions of ground waters found within Rainier Mesa that apparently have not reacted …

Authigenic Kaolinite In The Bear Den Member (Paleocene) Of The Golden Valley Formation, In Southwestern North Dakota, Gordon H. Prichard

Theses and Dissertations

The Golden Valley Formation of North Dakota crops out in isolated remnants over a large area of southwestern North Dakota. The formation has two members, the lower Bear Den Member, which is characterized by kaolin and bright colors and the upper Camels Butte Member, which is characterized by micaceous sand and clay.

Two different theories, either in place weathering or detrital deposition, have developed as to the origin of the kaolinite in the lower member. Early workers suggest that the kaolinite of the member is detrital in origin for the following reasons:

1. No unconformity is present at the top …

Stratigraphy, Sedimentology, And Depositional Environments Of The Hell Creek Formation (Late Cretaceous) And Adjacent Strata, Glendive Area, Montana, Raymond D. Butler

Theses and Dissertations

The Colgate Member (Fox Hills Formation), Little Beaver Creek, Marmarth, Bacon Creek, Huff, and Pretty Butte Members (Hell Creek Formation), and lower Ludlow Formation in the Glendive area, Montana consist of sandstone, sandy siltstone, shale, and lignite. The Colgate is 24 m thick and consists of mostly sandstone, The Hell Creek Formation (Late Cretaceous) is 120 m thick, The basal member, the Little Beaver Creek, is up to 12 m thick and consists of about half sandstone and half shale. The Marmarth is 24 to 30 m thick and consists of mostly sandstone. The Bacon Creek is 36 m thick …

The Effects Of N-Serve On The Availability Of Urea And Ureaformaldehyde Nitrogen On Lolium Perenne L., Ronald E. Schroll

Masters Theses

Laboratory experiments were conducted to determine the effect of "N-Serve" (DOW) on the availability of urea nitrogen and the subsequent greening effect on perennial ryegrass (Lolium perenne L.) seedlings as compared to the availability of nitrogen and subsequent greening from a controlled release ureaformaldehyde fertilizer. A low organic matter sandy loam soil and a high organic matter clay loam soil were used in this study. Soil treatments of urea and ureaformaldehyde fertilizers were applied and incorporated at concentrations of 0, 25, 38, and 50 ppm-N. N-Serve at concentrations of 0.25, 0.50, and 1.0 ppm active ingredient were applied and …

Prostaglandin Synthetase Inhibition By Cryogenine And Nesodine (Alkaloids Of Heimia Salicifolia) And A Related Synthetic Compound Jb-1-0 : A Thesis, William John Lema

University of the Pacific Theses and Dissertations

Heimia salicifolia Link and Otto (family Lythraceae), alternatively named Heimis salicifolia (H.B.K.) Link, is a relatively small shrub found In tropical and subtropical regions of South America, Mexico and Texas (1-2). The plant is known under many common names such as "abre-o-sol" (sun-opener) in the Rio Grande del Sur, "quiebra arado" (plow-breaker) in Argentina and "herva de la vida" (herb of 11fe) in Brazil (1). There is much folklore associated with Heimia salicifolia. In Mexico the name sinicuiche (twisted foot) is used for the plant as well as for an intoxicating beverage produced from its leaves. Inbibiting the beverage is …

Paleoenvironmental Analysis Of A Late Holocene Deposit : Stanton Site, West-Central North Dakota, David W. Fischer

Theses and Dissertations

The Stanton Site (W1/2NE1/4 sec. 16, T. 144 N., R. 85W.), eastern Mercer County, North Dakota, contains a late Holocene organic deposit in the cutbank of an ephemeral stream on the Missouri Plateau. Strati graphic units of the 104-cm section are, in ascending order: (l) gravel; (2) silty, organic, sandy clay; (3) organic silt; (4) silty, sandy, organic clay; (5) organic silt; (6) sandy, silt, organic clay; and (7) sand. A radiocarbon date of wood from the base of unit 2 indicates initiation of deposition at 325±_115 radiocarbon years B.P.

Abundant well-preserved fossils are present in the organic sediments of …

Surface Geology For Land Use Planning, Minot, North Dakota Area, Garth S. Anderson

Theses and Dissertations

The Minot area includes about 330 square kilometres along both sides of the Souris River in north-central North Dakota. The area can be divided into the flat Souris River floodplain, the steeply sloping sides of the Souris and Des Lacs meltwater channels and larger tributaries, and the gently undulating uplands dissected by small streams. Surficial geologic units include Early Tertiary sand, silt, clay, and sandstone of the Bullion Creek Formation, Pleistocene glacial till, ice contact fluvial deposits, and other fluvial deposits of the Coleharbor Group, and Holocene fluvial and eolian deposits of the Oahe Formation.

Expansion of the Minot metropolitan …

Geology Of The Columbia River Basalt In Silver Falls State Park, Oregon, Elizabeth Storm Norman

University Honors Theses

Silver Falls State Park is near the southern extent of the Columbia River Basalt Group as mapped in western Oregon. The flows in the park were identified as belonging to subdivisions of the Columbia River Basalt Group on the basis of physical characteristics and trace element geochemistry. The sequence of flows present is as follows: 3-4 flows of the Low-Mg chemical type of the Grande Ronde Basalt, 2 flows of the High-Mg chemical type of the Grande Ronde Basalt, 3 flows of the Frenchman Springs Member of the Wanapum Basalt, and one flow of anomolous geochemistry. The flows dip west …

Provenance Study Of The Westwater Canyon And Brushy Basin Members Of The Morrison Formation Between Gallup And Laguna, New Mexico, Ruben Martinez

Earth and Planetary Sciences ETDs

The objective of this investigation is to study the provenance of the Westwater Canyon and Brushy Basin Members of the Morrison Formation between Gallup and Laguna, New Mexico. The coarse, subarkosic Westwater Canyon Member is separated from the quartzitic sandstones of the underlying Recapture Member by an unconformity that provides a recognizable datum for correlation and a definite base for the Westwater Canyon Member.

The very pale orange, cliff-forming Westwater Canyon Member consists of Oto 137 m of very coarse- to very fine-grained, poorly sorted, subrounded to angular, arkosic to quartzitic sandstone with numerous lenses of arkosic granules and pebbles …

Petrogenesis Of Orbicular Rock, Tijeras Canyon, Sandia Mountains, New Mexico, Kathleen Affholter

Earth and Planetary Sciences ETDs

A new occurrence of orbicular rock is located in the Sandia Granite at W. long. 106° 25' 30", N. lat. 35° 04' 55" close to the granite-gneiss contact near Tijeras Canyon, Sandia Mountains, New Mexico. The orbicules, set in an aplite-pegmatite granitic matrix, have magmatic and metamorphic cores surrounded by a white plagioclase shell and one or two salmon-colored potassium feldspar shells. The outcrop occurs in two dike-like masses with thicknesses of 1 to 4 m trending N. 5° W. and N. 35° E. for exposed lengths of 16m and 46 m, and is surrounded by biotite syenodiorite and biotite …

Archeological Investigations At The Big Creek Lake Site (24ra34), Lynn Barry Fredlund

Geological Engineering

In August 1977 excavation was conducted at the Big Creek Lake site -24RA34- at the outlet of the 91g Creek Lakes, Selway-Bitterroot Wilderness Area, Ravalli County, Montana. The site contained shallow, disturbed deposits and lacks any statisgraphic separation. One of these occupations was identified by a projectile point type not previously reported from the area. This was termed Big Creek Corner Notched and its temporal affiliation is not precisely known. Comparative material from Colorado and Alberta suggest either Early Archaic or Late Archaic affiliation. The occupations exemplified by Big Creek Corner Notched points and by Pelican Lake-Elko points (Late Archaic …

Geology Newsletter- 1979, Department Of Geology

Geological and Environmental Sciences News

Includes a list of short news items from the chair, Lloyd Schmaltz, addressed to alumni and friends.

Analysis And Interpretation Of The 5,000 Ft. (1,538 M) Red-Bed Sequence Encountered In The Sparks E̲T̲ A̲L̲. #1-8 (Michigan Basin Deep Borehole), John H. Fowler

Masters Theses

A 5,000 ft (1,538 m) pre-Mt. Simon (Upper Cambrian) red-bed sequence, encountered in the Gratiot County deep borehole (Sparks et al. #1-8) and herein na~ed the North Star Formation, consists of undeformed recurring beds of immature arkosic sandstone 2 to 34 in. (5 to 85 cm) thick. These beds grade upward from erosional basal contacts into mudstone units 1 in to 12 ft (3 cm to 3.8.m) thick. Within the sandstones, grading, horizontal lamination, and crossstratification define Bouma intervals "a", "b", and "c", which combine to form incomplete Bouma sequences. Mudstones exhibit abundant horizontal laminations. Secondary sedimentary structures (load . …

Geology Of The Cerro Del Grant Area, Rio Arriba County, North-Central New Mexico, John Richmond Lawrence

Earth and Planetary Sciences ETDs

The present study undertook the geologic mapping and investigation of the stratigraphy, structural geology, igneous petrology and mineral resources of the Cerro del Grant area, a 75- (190 ) region near Coyote, Rio Arriba County, north-central New Mexico. The area is situated at the junction of three geologic provinces: the Chama platform, the Española Basin of the Rio Grande rift, and Jemez volcanic field.

Sedimentary rocks include 2,500 ft (830 m) of sandstone, shale, conglomerate and limestone of Late Triassic to Quaternary age. These strata are unconformably overlain by several hundred feet of mafic, intermediate and rhyolitic lavas which make …

Analysis And Interpretation Of The 5,000 Ft (1,538 M) Red-Bed Sequence Encountered In The Sparks Et Al. #1-8 (Michigan Basin Deep Borehole), John H. Fowler

Masters Theses

A 5,000 ft (1,538 m) pre-Mt. Simon (Upper Cambrian) red-bed sequence, encountered in the Gratiot County deep borehole (Sparks et al. #1-8) and herein named the North Star Formation, consists of undeformed recurring beds of immature arkosic sandstone 2 to 34 in (5 to 85 cm) thick. These beds grade upward from erosional basal contacts into mudstone units 1 in to 12 ft (3 cm to 3.8 m) thick. Within the sandstones, grading, horizontal lamination, and crossstratification define Bouma intervals "a", "b", and "c", which combine to form incomplete Bouma sequences. Mudstones exhibit abundant horizontal laminations. Secondary sedimentary structures (load …

Structural And Petrologic Comparison Of The Southern Sapphire Range, Montana With The Northeast Border Zone Of The Idaho Batholith, Stacy Lon Clark

Masters Theses

No abstract provided.

Atmospheric Implications Of Studies Of Central American Volcanic Eruption Clouds, R. D. Cadle, A. L. Lazrus, B. J. Huebert, L. E. Heidt, William I. Rose, D. C. Woods, Raymond L. Chuan, Richard E. Stoiber, D. B. Smith, Robert A. Zielinski

Department of Geological and Mining Engineering and Sciences Publications

During February 1978 a group of scientists from the National Center for Atmospheric Research, several colleges and universities, the U.S. Geological Survey, and NASA used a specially equipped Beech Queen Air aircraft to make 11 sampling flights in Guatemala through the eruption clouds from the volcanoes Pacaya, Fuego, and Santiguito. Measurements were made of SO₄²⁻, SO₂, HCl, HF, and 11 cations that were in water-soluble form, on samples collected by a specially designed filter pack. Particle size distributions were obtained with a piezoelectric cascade impactor, and the particles were identified by energy dispersive X ray …

Petrogenetic Properties Of Chondrules In Unequilibrated H-, L-, And Ll-Group Chondritic Meteorites, James Leslie Gooding

Earth and Planetary Sciences ETDs

The physical properties (size, shape, mass, density, surface morphology), bulk chemical composition (by nondestructive instrumental neutron activation analysis), texture, and phase compositions (by electron microprobe analysis) have been determined for each of 141 individual chondrules separated from a total of 11 different H-, L-, and LL-group chondritic meteorites of Van Schmus-Wood petrologic types 3 and 4. In addition, physical properties have been determined for 75 other chondrules from the same chondrites. The chondrites studied are comparatively unaltered and unequilibrated and include Tieschitz (H3), Dhajala (H3, 4), Ochansk (H4), Weston (H4), Hallingeberg (L3), Saratov (L4), Tennasilm (L4), Chainpur (LL3), Semarkona (LL3), …

Hydrogeologic And Geochemical Investigation Of The Boone-St. Joe Limestone Aquifer In Benton County, Arkansas, Albert E. Ogden

Arkansas Water Resources Center Technical Reports

The Boone-St. Joe limestone aquifer is an important unconfined aquifer for rural residents of Benton County, Arkansas. Pumping tests indicate a large range in production capability of the aquifer. The coefficient of transmissibility and specific capacity range from 24.8 to 24640 gpd/ft and 0.03 to 30 gpm/ft, respectively. No statistical relationship at a = 0.10 was found between each of these parameters and photo-lineament proximity. Drillers' estimated well yield (gpm) also showed no relationship to photo-lineament proximity. It is therefore concluded that choosing well sites along photo-lineaments for higher production is not as reliable for karstified carbonate aquifers such as …

The Origin Of Fine Scale Acoustic Stratigraphy In Deep-Sea Carbonates, Larry A. Mayer

Affiliate Scholarship

In this paper we investigate the origin and geologic significance of the closely spaced high-frequency subbottom acoustic reflectors characteristic of pelagic carbonates. A detailed survey was conducted of a small area in the equatorial Pacific with the Marine Physical Laboratory's Deep-Tow instrument package, providing high-resolution 4-kHz profiles and precise positioning of core samples. The cores were sampled at closely spaced intervals for sound velocity and saturated bulk density. Acoustic impedances were calculated, and a reflection coefficient log determined for the upper 10 m of the sediment column. The reflection coefficient log revealed no interfaces with large reflection coefficients that correlated …

Effects Of No-Tillage Fallow As Compared To Conventional Tillage In A Wheat-Fallow System, C. R. Fenster, G. A. Peterson

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The benefits of reducing tillage by use of herbicides for weed control emphasizes why research was started to study a fallow system where all tillage was replaced by herbicides. Wheat planting was then the only soil disturbing operation. Objectives of the research were to compare the effects of no-tillage (chemical), stubble-mulch and plow (bare fallow) systems of fallow on: 1. Grain yield. 2. Grain protein. 3. Residue retention. 4. Soil nitrate-nitrogen accumulation. 5. Soil water accumulations during fallow. Data presented are in the form of a progress report. These experiments will continue.

A Geophysical Definition Of A Klamath Falls Graben Fault, Cynthis Ann Veen

Dissertations and Theses

Four geophysical methods, along with well logs and outcrop data, were used in determining the location of a fault situated on the campus of Oregon Institute of Technology, just north of Klamath Falls, Oregon. The fault displaces rocks of the Yonna Formation, of Pliocene age. Wells located northeast of the fault (on the upthrown side) produce cold water, and wells located southwest of the fault (on the downthrown side) produce hot water. The purpose of this investigation was to define the characteristics of the fault exposed behind a large water tank southeast of the OIT campus.

A Biotic Analysis Of The Dobbs Park Natural Area With Emphasis On Spatial Distribution Of Trees In The Old-Growth Forest Section, Ronald L. Helms

All-Inclusive List of Electronic Theses and Dissertations

Dobbs Park is a 105-acre tract, located at the east edge of Terre Haute, Indiana. Community types range from grass-forb to a 14-acre mature deciduous forest. The tract was divided into 36 units from which 14 community types were developed. The large number of community types appears to be a product of discontinued tillage or grazing within various sections of the tract at different times. The mature forest is largely upland depressional, much of which is subject to periodic pending. Dominants among the 34 tree species present are elms (Ulmus americana, rubra and thomasii) and ashes (Fraxinus americana and pennsylvanica) …

Rubidium-Strontium And Related Studies Of The Salado Formation, Southeastern New Mexico, Joseph K. Register Jr.

Earth and Planetary Sciences ETDs

The Salado Formation, a member of the Ochoa Series, is a bedded salt deposit which is found in the Delaware Basin southeastern New Mexico and west Texas. It is comprised primarily of halite and sylvite with minor amounts of sulfate minerals. Rubidium-strontium age determinations of the evaporite minerals in the Salado indicate an age of final equilibration of 214 15 m.y. This age is fairly consistent with the geologic age of the formation, precluding substantial alkali-alkaline earth migration since deposition. Polyhalite and anhydrite samples from the Salado give / values of about .7078, which are consistent with reported valued for …

Oxygen Isotopic Analysis Of Silicates And Oxides Using Both Bromine Pentafluoride And Fluorine Gas As Reagents, Harold Roy Northrop

Earth and Planetary Sciences ETDs

In recent years the preferred analytical procedure for the extraction of oxygen from silicates and oxides for oxygen isotope analysis has been the oxidation of the samples with either fluorine (F2) or bromine pentafluoride (BrF5) to produce oxygen. Several standards are available for monitoring the extraction procedure, and one in particular (NBS-28) is used in many laboratories. The oxygen-18 oxygen-16 ratios obtained for NBS-28 vary by as much as one permil between laboratories. The major cause of this variation lies in the extraction procedure used. Extraction of oxygen from iron bearing minerals and whole rocks (and minerals containing certain other …

Distributional And Dimensional Patterns Of Muskrat Burrows, James G. Bruner

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.