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Articles 10711 - 10740 of 11747
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Ua66/8/3 Annual Report, Wku Geography & Geology
Ua66/8/3 Annual Report, Wku Geography & Geology
WKU Administration Documents
Annual report of activities of the WKU department of Geography & Geology.
Stress Measurements At Depth In The Vicinity Of The San Andreas Fault: Implications For The Magnitude Of Shear Stress At Depth, Mark D. Zoback, Hiroaki Tsukahara, Stephen Hickman
Stress Measurements At Depth In The Vicinity Of The San Andreas Fault: Implications For The Magnitude Of Shear Stress At Depth, Mark D. Zoback, Hiroaki Tsukahara, Stephen Hickman
United States Geological Survey: Staff Publications
Using the hydraulic fracturing technique, we have made a systematic series of in situ stress measurements in wells drilled near the San Andreas fault. In an attempt to provide constraints for the magnitude of shear stress on the San Andreas fault at depth we have measured both the variation of stress with distance from the fault in relatively shallow (~230 m) wells and the variation of stress with depth in a ~ 1 km-deep well located 4 km from the fault. The shallow wells are located along profiles roughly perpendicular to the fault in the western Mojave desert near Palmdale …
Ground Driven Powered Tillage, Larry G. Wells, E. M. Smith, D. E. Hammett, H. J. Thompson Jr.
Ground Driven Powered Tillage, Larry G. Wells, E. M. Smith, D. E. Hammett, H. J. Thompson Jr.
Biosystems and Agricultural Engineering Faculty Publications
A ground driven powered tillage device is described which utilizes a passive rolling coulter propelled through the soil by a prime mover. The reaction torque imparted by the soil to the coulter is delivered via a torque transfer unit to a powered tillage blade. The tillage blade rotates counter to the direction of the passive rolling coulter and prepares a tilled furrow of some predetermined depth for seed placement and coverage.
Analysis is presented in which the torque developed by a passive rolling coulter engaging the soil is predicted. A relationship is presented for determining the velocity ratio between the …
High-Carbonate And Low-Silica Stone In The High Bridge Group (Middle Ordovician), Fayette County, Central Kentucky, Garland R. Dever Jr.
High-Carbonate And Low-Silica Stone In The High Bridge Group (Middle Ordovician), Fayette County, Central Kentucky, Garland R. Dever Jr.
Information Circular--KGS
The High Bridge Group (Middle Ordovician) of central Kentucky, a major source of limestone and dolomite for construction and agricultural stone, is also a potential source of stone for industrial uses requiring carbonate rocks of high chemical purity. Chemical analyses of foot-by-foot samples from a Fayette County core show that several thick zones of high-carbonate and low-silica stone are present in the High Bridge at a minable depth.
Glacial Deposits, Vol. 8, 1979-1980, Department Of Geography-Geology
Glacial Deposits, Vol. 8, 1979-1980, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
Fossil Algae In The St. Louis Limestone, Near St. Louis, Missouri, Sherris Ragsdale Myers
Fossil Algae In The St. Louis Limestone, Near St. Louis, Missouri, Sherris Ragsdale Myers
Masters Theses
"Although Mississippian algae research is fairly extensive, little has been published on algae from the Mississippian type locality, the Upper Mississippi River Valley. For this study, portions of sixteen St. Louis Limestone stratigraphic sections containing units with oncolites, domal stromatolites, laminations, or mottled (possibly algal) textures, were measured, described, and sampled to determine: (1) to what extent algae are preserved in the St. Louis Limestone, (2) if enough of the delicate structure was fossilized to determine morphology, (3) depositional environment of the algae, and (4) if the algae are related to a lithologic pattern. Thin sections of the sampled units …
Kaolinitic Weathering Zone On Precambrian Basement Rocks, Red River Valley, Eastern North Dakota And Northwestern Minnesota, Lynne Irvine Kelley
Kaolinitic Weathering Zone On Precambrian Basement Rocks, Red River Valley, Eastern North Dakota And Northwestern Minnesota, Lynne Irvine Kelley
Theses and Dissertations
A suite of 26 drill cores recovered from the Red River Valley Drilling Project has provided new information on the Precambrian basement of eastern North Dakota and northwestern Minnesota. Basement rocks in this area consist of intermediate to felsic coarse-grained massive or gneissic rocks, and intermediate to mafic metavolcanic and metasedimentary schists. The Precambrian rocks of the region are interpreted to be a buried extension of the Superior Province of the Canadian Shield, and are divided into terranes of granitic rock and mafic schist, on the basis of drill-hole samples, patterns seen in Superior Province rocks which crop out to …
Periglacial Landforms And Processes In The Southern Kenai Mountains, Alaska, Palmer K. Bailey
Periglacial Landforms And Processes In The Southern Kenai Mountains, Alaska, Palmer K. Bailey
Theses and Dissertations
The distribution and characteristics of periglacial landforms in the southern Kenai Mountains, Alaska, were investigated during the summer of 1979. The principal area of study was a 1300-metre high mountain mass which stood as a nunatak during the last general glaciation. Periglacial features in the area include gelifluction lobes, nivation hollows, cryoplanation terraces, tors, a string bog, and various for111S of patterned ground such as sorted circles, sorted polygons, earth hummocks, sorted steps, sorted stripes, and small ice-wedge polygons.
Ground temperature measurements indicate that permafrost recently existed in the area but is no longer present. The sorted polygons, cryoplsnation terraces, …
Surface Geology For Land Use Planning, Minot, North Dakota Area, Garth S. Anderson
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 Newsletter- 1979, Department Of Geology
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.
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
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 …
The Origin Of Fine Scale Acoustic Stratigraphy In Deep-Sea Carbonates, Larry A. Mayer
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 …
"Energy Resources", Harrison Scott Brown
"Energy Resources", Harrison Scott Brown
Special Collections: Oregon Public Speakers
With: Salter, C. L. The urban enigma.
Geology, Characteristics, And Resource Potential Of The Low-Temperature Geothermal System Near Midway, Wasatch County, Utah, James F. Kohler
Geology, Characteristics, And Resource Potential Of The Low-Temperature Geothermal System Near Midway, Wasatch County, Utah, James F. Kohler
All U.S. Government Documents (Utah Regional Depository)
Recent awareness of the finite nature of fossil-fuel resources has resulted in an increased interest in alternate sources of energy such as geothermal. To evaluate the geothermal energy potential of the hot springs system near Midway, Wasatch Co., Utah, consideration was given to heat flow, water chemistry, and structural controls.
Abnormal heat flow was indicated qualitatively by snow-melt patterns and quantitatively by heat-flow measurements that were obtained from two of four temperature-gradient wells drilled in the area. These measurements indicated that the area north of the town of Midway is characterized by heat flow equal to 321.75 mW/m2, which is …
Turbidity - Suspended Sediment Relations In A Subalpine Watershed, Thomas A. Holstrom
Turbidity - Suspended Sediment Relations In A Subalpine Watershed, Thomas A. Holstrom
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The effect of particle size distribution of suspended sediment vii upon a turbidity reading at a known concentration has been relatively quantified for stream bank materials on the Moccasin Basin - North Fork Fish Creek (MB-NFFC) Watershed, located in northwestern Wyoming. As expected, an increase in the median particle size in suspension results in a decrease of turbidity at a given concentration. The relationship derived correlates the particle size distribution of a chemically dispersed stream-bank material sample, with the Coefficient of Fineness for a mechanically dispersed portion of the sample.
Accuracy Of Pressure Determinations Based On The Ruby Fluorescence Scale, Susan L. Shutt
Accuracy Of Pressure Determinations Based On The Ruby Fluorescence Scale, Susan L. Shutt
Senior Honors Papers / Undergraduate Theses
No abstract provided.
Changing Fields: Agricultural Land Use Changes In Nebraska 1925-1974, Donald A. Wilhite
Changing Fields: Agricultural Land Use Changes In Nebraska 1925-1974, Donald A. Wilhite
National Drought Mitigation Center: Faculty Publications
The series of graphs and maps which follow illustrate agricultural land use changes in Nebraska from 1925 to 1974. With these graphs and maps, the major agronomic crops of corn (dryland and irrigated), wheat, sorghum and soybeans are analyzed. The purpose of this analysis is to provide a pictorial history of Nebraska's ever-changing cropping system and, hopefully, to stimulate ideas and discussion with regard to trends and future directions. The Nebraska Water Resources Center is deeply interested in both the past and the future of Nebraska's agriculture because of the demands which agriculture places on the state's water resources. An …
Ua66/8/3 Annual Report, Wku Geography & Geology
Ua66/8/3 Annual Report, Wku Geography & Geology
WKU Administration Documents
Annual report of activities of the WKU department of Geography & Geology.
Soil Potential For Groundnut Production At Kununurra, Western Australia : Report Of A Survey Conducted In January 1979, J C. Dixon, Richard J. Petheram
Soil Potential For Groundnut Production At Kununurra, Western Australia : Report Of A Survey Conducted In January 1979, J C. Dixon, Richard J. Petheram
Technical Bulletins
Production of groundnuts in trials on irrigated Cockatoo Sands near Kununurra have been sufficiently encouraging for a soil survey to be requested of three small areas possibly suitable for commercial release. It was anticipated that between 1 000 and 1 200 ha would be necessary in the immediate future for development of five farms for groundnut production. The survey was begun in November 1978 to: classify the sand soil types. determine the potential of these types for with groundnut production. examine possible relationships between soils and vegetation to be used when selecting land for groundnut production.
Coal Resource Occurrence And Coal Development Potential Maps Of The Southeast Quarter Of The Hiawatha 15-Minute Quadrangle Emery County, Utah, United States Geological Survey
Coal Resource Occurrence And Coal Development Potential Maps Of The Southeast Quarter Of The Hiawatha 15-Minute Quadrangle Emery County, Utah, United States Geological Survey
All U.S. Government Documents (Utah Regional Depository)
This report was compiled to support the land planning work of the Bureau of Land Management and to provide a systematic coal resource inventory of Federal coal lands in Known Recoverable Coal Resource Areas (KRCRA's) in the Western United States. It supplements the land planning requirements of the Federal Coal Leasing Amendments Act of 1976 (Public Law 94-377) sec. (3)(B) which states, in part, that "Each land-use plan prepared by the Secretary [of the Interior] (or in the case of lands within the National Forest System, the Secretary of Agriculture pursuant to sub-paragraph (A)(i)) shall include an assessment of the …
A Model For Predicting Lightning-Fire Ignition In Wildland Fuels, United States Department Of Agriculture, Forest Service
A Model For Predicting Lightning-Fire Ignition In Wildland Fuels, United States Department Of Agriculture, Forest Service
Wildfires
A model has been developed for predicting the number of lightning-fire ignitions in wildland fuels. The model is based on both stochastic and physical processes. Stochastic methods are used to generalize the lightning storm characteristics and site conditions that affect the potential for ignition. Physical processes are involved in determining the ignition probability of woody fuels by individual lightning events. Input required to operate the model includes lightning activity, upper air windspeed (storm movement), fuel moisture, and fuel bulk density. The model can be used either to predict ignitions at some future time by using forecast data or to estimate …
Gas Exchange Of Sonoran Desert Plants, S. R. Szarek, R. M. Woodhouse
Gas Exchange Of Sonoran Desert Plants, S. R. Szarek, R. M. Woodhouse
Memorandum
No abstract provided.
There's Little To Choose Between Scarifier Points, C R. Lester
There's Little To Choose Between Scarifier Points, C R. Lester
Journal of the Department of Agriculture, Western Australia, Series 4
Tests on scarifier points showed that methods of treating them to prolong their life had little effect.
Hydrogeologic Investigation Of A Landfill Site In Washington County, Arkansas, Albert E. Ogden, Carlos J. Quintana
Hydrogeologic Investigation Of A Landfill Site In Washington County, Arkansas, Albert E. Ogden, Carlos J. Quintana
Journal of the Arkansas Academy of Science
A proposed landfill site near Wheeler, Washington Co., Arkansas, was investigated for its hydrogeologic suitability. The site is located on the highly fractured, cavernous, and cherty Boone Ls. The site is a small upland valley 4500 ft. north of Clear Creek. The valley containing the proposed site is a karst dry valley in which precipitation rapidly infiltrates, recharging the water table and local springs. The water table around the site was mapped to determine the hydraulic gradient and direction of ground-water movement. The water table slopes in a SE direction from the landfill towards Clear Creek with a steep hydraulic …
Glacial Deposits, Vol. 7, 1978-1979, Department Of Geography-Geology
Glacial Deposits, Vol. 7, 1978-1979, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
Alkalinity And Ph In The Southern Chesapeake Bay And The James River Estuary, George T. F. Wong
Alkalinity And Ph In The Southern Chesapeake Bay And The James River Estuary, George T. F. Wong
OES Faculty Publications
The ranges of alkalinity and pH in the southern Chesapeake Bay and the James River estuary were 2.25 meq·liter−1 at 32‰ to
Heavy Metal Patterns In Big And Aux Vases River Drainage Rolla 1⁰ X 2⁰ Quadrangle, Missouri, Behzad Afzali
Heavy Metal Patterns In Big And Aux Vases River Drainage Rolla 1⁰ X 2⁰ Quadrangle, Missouri, Behzad Afzali
Masters Theses
"Some 71 active stream sediment, bank sediment, biota, and stream water samples were collected at selected sites along the Big River and Aux Vases rivers and tributaries. The pH, alkalinity, specific conductance, temperature were determined and samples analyzed for Cu, Pb, Zn, Co, Ni, and Cd content.
Stream waters carry heavy metals in low parts per billion. Greatest heavy metal content is in the stream waters of Flat River and lower Big River.
Acid leachable heavy metal content of -80 mesh fractions of stream sediments for Cu, Pb, Zn, Co, Ni, and Cd are orders of magnitude greater than that …
Geology And Mineralization, Ohio And Mt. Baldy Districts, Marysvale, Piute County, Utah, Laurence M. Nuelle
Geology And Mineralization, Ohio And Mt. Baldy Districts, Marysvale, Piute County, Utah, Laurence M. Nuelle
Masters Theses
"The Ohio and Mt. Baldy Mining Districts near Marysvale, Utah occupy a cauldron complex in the Bullion Canyon Volcanics. This complex contains three rock groups of three volcanic episodes. The oldest is a volcanic cone framework series of lahars. The middle group is represented by lava flows, ash flows, and breccias which represent intra-caldera fill. The upper group consists of a local vent complex and the Delano Peak Tuff Member both of which may be related to ring fracture activity.
The stages of veining in the area include in order of gradational deposition: (1) early quartz veins, (2) pre-productive main …
Applied Geology In The Beulah-Hazen Area, Mercer County, West-Central North Dakota, Gary N. Meyer
Applied Geology In The Beulah-Hazen Area, Mercer County, West-Central North Dakota, Gary N. Meyer
Theses and Dissertations
Increased lignite development around the small towns of Beulah and Hazen, North Dakota, will cause rapid growth and necessitate the develop ment of new subdivisions and expansion of present sewage disposal facili ties. A detailed geologic study of a 9 0-square mile area surrounding the two towns was undertaken to provide information valuable to those concerned with proper management of this growth. A surface and near-surface materials map was prepared at a scale of 1:24, 000 showing relative depths and thicknesses of a maximum of three earth materials to a depth of 9 m. Eleven units were mapped at the …
The Geohydrology And Hydrogeochemistry Of The Proposed Garrison Lignite Mine, Kevin Morin
The Geohydrology And Hydrogeochemistry Of The Proposed Garrison Lignite Mine, Kevin Morin
Theses and Dissertations
A local groundwater study is a necessity before the opening of any lignite mine in North Dakota. The study becomes an important reference for the environmental impact during mining and after reclamation.
This report is a groundwater study of the Proposed Garrison Lignite Mine, McLean County, North Dakota. The mineable lignite is in the lower Sentinel Butte Formation (Paleocene). The remainder of the Paleocene material at the proposed mine site is mostly fluvial silty clay deposits with some sand beds. Pleistocene deposits, mostly pebble loam (till), cover the Sentinel Butte at the mine site.
Ninety piezometers in twenty-eight nests were …