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Articles 19321 - 19350 of 19480
Full-Text Articles in Earth Sciences
Geophysical Investigation At The Mouth Of The St. Joseph River Valley And Adjacent Lake Michigan Shoreline In St. Joseph And Benton Harbor, Michigan, David L. Seng
Masters Theses
A combination of geophysical methods were employed in an attempt to characterize a small section of the shoreline of the St. Joseph, Michigan, region of the Lake Michigan shoreline. Electrical resistivity and Ground Penetrating Radar profiles conducted along the shoreline and within the nearshore environment reveal a buried valley of the ancestral St. Joseph river. This valley represents incision of the channel during lowered lake levels at the end of the Pleistocene.
Lakeward dipping radar reflectors are identified throughout the study site. Within the buried valley the reflectors are not glacial till as is the case outside the inferred valley …
A Feasibility Study For Using Computerized Water Well Records To Delineate Areas Of Recharge-Discharge Potential, Lauren D. Hughes
A Feasibility Study For Using Computerized Water Well Records To Delineate Areas Of Recharge-Discharge Potential, Lauren D. Hughes
Masters Theses
A method for delineating areas of recharge-discharge potential has been developed utilizing computerized water well records. The methodology is based on the vertical head differences found between wells with shallow depths of submergence and those with deeper depths of submergence. The residual values generated represent the magnitude of vertical potential and can be contoured to delineate areas of recharge-discharge potential. Well data were obtained from the Kalamazoo County Groundwater Database. Well selection was based on depth of submergence and total well depth.
The methodology was tested in Texas and Schoolcraft Townships, the Donnell Lake Study Area, and Kalamazoo County. Regularly …
Geology Newsletter- 1994, Department Of Geology
Geology Newsletter- 1994, Department Of Geology
Geological and Environmental Sciences News
Vol. 1, No. 19
- Faculty News
- Awards and Scholarships
- Alumni/ Friends/ Former Faculty Notes
- Geology Development and Scholarship Donations
Geological And Hydrogeological Characterization Of The Schoolcraft Aquifer, Schoolcraft, Michigan, William K. Steinmann
Geological And Hydrogeological Characterization Of The Schoolcraft Aquifer, Schoolcraft, Michigan, William K. Steinmann
Masters Theses
Newly installed monitoring wells, county well logs, gamma-ray logs, head measurements, flow nets, slug tests, and full aquifer pumping tests were utilized to characterize the geologic and hydrogeologic conditions of the area. Evaluation of the geologic conditions indicate that the study area is best described as a glacially generated, humid type, alluvial fan. A hydrogeologic facies model concept aided in the initial evaluation of the hydrogeologic conditions and was utilized for the placement of several vertically nested monitoring wells. Further evaluation indicates an unconfined aquifer comprised of two separate flow systems: a shallow, local flow system interacting with flow-through surface …
An Evaluation Of Five Perfluorinated Hydrocarbons As Tracers In Non-Aqueous Phase Liquids, Jennifer K. Bergin
An Evaluation Of Five Perfluorinated Hydrocarbons As Tracers In Non-Aqueous Phase Liquids, Jennifer K. Bergin
Masters Theses
Tracers are used in many facets of hydrogeological investigations. At this time, only tracers for aqueous phase liquids are known. The object of this investigation is to assess the viability of a suite of hydrocarbons as tracers m underground spills of non-aqueous phase liquids.
Laboratory experiments were performed to determine if the potential tracers were soluble in common petroleum hydrocarbons, non-volatile, differentiable and quantifiable by GC/MS, and conservative.
The first compound tested, perfluorokerosene, was detected but could not effectively be determined quantitatively with the GC/MS. Its use should be restricted to investigations in which only its presence, and not its …
Subsurface Glacial Geology Of The Area Between The Tekonsha And Kalamazoo Moraines, Kalamazoo County, Michigan, Kim Finkbeiner
Subsurface Glacial Geology Of The Area Between The Tekonsha And Kalamazoo Moraines, Kalamazoo County, Michigan, Kim Finkbeiner
Masters Theses
Cross sections profiling the stratigraphy of the glacial sediments were created using the geological logs recorded on water well records. Glacial sediments in the study area comprise a large outwash complex between two moraines. The surficial landforms are the result of the last Wisconsinan advance and retreat through the area.
Cross sections contructed for this project reveal at least three major till units. An additional till unit contains a weathered soil sequence. Therefore, it is possible that this paleosol represents the Sangamon Interglacial period between the Wisconsinan and Illinoian stages. No obvious evidence of movement of the Saginaw Lobe remains …
Investigations Of Glacial-Drift Aquifer-Lake Interactions Using Hydrogeology, Geochemistry, And Stable Isotopes At Asylum Lake, Michigan, Vincent E. Buening
Investigations Of Glacial-Drift Aquifer-Lake Interactions Using Hydrogeology, Geochemistry, And Stable Isotopes At Asylum Lake, Michigan, Vincent E. Buening
Masters Theses
A hydrogeological investigation of Asylum Lake and its associated unconfined glacial-drift aquifer in Kalamazoo, Michigan was undertaken to define the lake-aquifer interaction at the study area. In addition, the impact of development proximal to the study area on ground water and lake-water quality was evaluated. Hydrogeology, inorganic water chemistry, and stable isotopic ratios of deuterium to hydrogen were employed to establish the interaction of the lake and the aquifer.
The findings from this study indicated that: (a) the sandy unconfined glacial-drift aquifer discharges into the lake along its western margin and is recharged by the lake along its eastern margin; …
Hydrogeology And Hydrogeochemistry Of Government Marsh, North St. Joseph County, Michigan, Michael C. Kasenow
Hydrogeology And Hydrogeochemistry Of Government Marsh, North St. Joseph County, Michigan, Michael C. Kasenow
Dissertations
A hydrogeologic and hydrogeochemical investigation was conducted at Government Marsh located in St. Joseph County, Michigan from May, 1988, to November, 1993. Information on glacial geology, topography, drainage patterns, hydraulic conductivity, vegetation, water chemistry, and static water table elevations has been collected and analyzed. Data were collected in order to determine directions of ground water flow and areas of recharge and discharge. Bail-down tests, grain-size analysis, and permeameters were used to determine hydraulic conductivity adjacent to and within the wetland. Water table elevations and chemistry were analyzed from wells adjacent to the wetland perimeter and within the boundaries of the …
Problems Associated With Using Ground Penetrating Radar To Locate A Lnapl Plume, Jodie Mcneil
Problems Associated With Using Ground Penetrating Radar To Locate A Lnapl Plume, Jodie Mcneil
Masters Theses
The Crystal Refinery in Carson City, Michigan was the site used to test the hypothesis that Ground Penetrating Radar can locate LNAPL plumes. The contamination at the site is in the form of two tree product plumes and a dissolved plume. Three Ground Penetrating Radar antennas were used, a 100 MHz, a 300 MHz and a 500 MHz. Borings with a hand auger were made on some of the GPR lines. Gravel and coarse sand along with product in the form of residual stain and tree product were found in some locations. A vertical electrical sounding and a resistivity profile …
Total Organic Carbon In A Glacial Aquifer: Measurement And Effects Upon Transport Of Organic Compounds, Jiang Wu
Masters Theses
Organic contaminant transport processes in subsurface systems have been paid increasing attention recently. Sorption of organic compounds on the aquifer solid matrix (retardation) is one of the most important processes influencing contaminant transport. The extent of sorption has been estimated by determination of organic carbon in aquifer materials and assumptions concerning sorption constants.
This paper focuses upon the sensitivity of organic contaminant transport to the total organic carbon (TOC) content in a natural aquifer. This study was composed of two phases. The first phase was methodology development and laboratory analysis of organic carbon contents in soil samples. Acidification and furnace …
The Effects Of A Wetland On Ground-Water Quality In An Agriculturally Impacted Aquifer, Marilyn Ann Betts
The Effects Of A Wetland On Ground-Water Quality In An Agriculturally Impacted Aquifer, Marilyn Ann Betts
Masters Theses
Nitrate concentrations in excess of U.S. EPA standards have been documented for farm wells in an area where hog production and row crops are the predominant forms of agribusiness. The aquifer serving this area is in glacial deposits of interbedded sand, clay, gravel and till. The upper, unconfined, sand and gravel unit of the aquifer is connected to a flow-through wetland. Five well nests, with wells at various depths, were installed in and around the wetland. Samples were taken from the wells in both winter and summer to establish temporal and spatial changes in ground-water quality parameters.
Concentrations of nitrate, …
The Relationship Between Basement Structure And Overlying Sediments In The Michigan Basin: A Detailed Gravity Investigation, Mitchell Joseph Gutaj
The Relationship Between Basement Structure And Overlying Sediments In The Michigan Basin: A Detailed Gravity Investigation, Mitchell Joseph Gutaj
Masters Theses
A detailed gravity study consisting of 945 measurements was carried out in Branch County, Michigan. The objectives of this study are to determine if: (a) structural trends interpreted from regional gravity data in southwestern Michigan are also observed in a more detailed survey in Branch County and (b) any relationship exists between observed geophysical anomalies, geological structures and overlying basin sediments.
The resulting gravity map indicates that NW-SE, NE-SW, and N-S trends are more clearly identified comprising several elliptical highs and lows. Variations in the isopachs of some of the overlying Phanerozoic formations area are also coincident with gravity anomalies. …
Studies Of The Effect Of Hydrophobic Filter Packs In Free Product Hydrocarbon Recovery Wells, Stephen J. Shank
Studies Of The Effect Of Hydrophobic Filter Packs In Free Product Hydrocarbon Recovery Wells, Stephen J. Shank
Masters Theses
Most free product hydrocarbon recovery wells are filter packed in order to prevent aquifer material from entering the well and to increase their effective diameter. Historically there are five factors in filter pack designs: grain size, grain shape, mineralogy, uniformity, and the filter pack diameter. Previous laboratory experiments found that filter packs treated with a water repellant chemical could dramatically improve well performance. This adds wettability as a sixth factor.
A desorption experiment was conducted to determine the feasibility of using a chemically treated filter pack in the subsurface. Analytical results of the leachate from the chemically treated sand indicated …
Geology Newsletter- 1993, Department Of Geology
Geology Newsletter- 1993, Department Of Geology
Geological and Environmental Sciences News
Vol.1, No. 18
- Faculty News
- Awards and Scholarships
- Service Staff News
- Hydrogeologic Atlas Available
- Alumni/ Friends/ Former Faculty Notes
- Geology Development and Scholarship Donations
A Study Of Aquifer Sensitivity And Vulnerability In Kalamazoo County, Michigan Based On Hydrogeologic And Agricultural Factors, Steven Douglas Chidester
A Study Of Aquifer Sensitivity And Vulnerability In Kalamazoo County, Michigan Based On Hydrogeologic And Agricultural Factors, Steven Douglas Chidester
Masters Theses
Groundwater in Kalamazoo County, Michigan has been impacted by human activities. This study presents a statistical method for predicting aquifer sensitivity/vulnerability within a glacio-hydrogeologic system.
Computerized data including 3620 water well records with partial chemical analyses, soil surveys, land use maps, and hydrogeologic reports were used to quantify aquifer parameters, nitrate-N contaminant concentrations, soil factors, and agricultural practices. Statistical analyses included simple t-tests , correlation, ANOV A, and multiple regression analyses.
The results indicate that there are statistically significant relationships between nitrate-N concentrations and depth of well submergence, well depth, clay thickness, partial clay thickness, land use, and soil slope. …
Precipitation Dynamics In Kalamazoo, Sw Michigan: A Stable Isotope Perspective, Madhav V. Machavaram
Precipitation Dynamics In Kalamazoo, Sw Michigan: A Stable Isotope Perspective, Madhav V. Machavaram
Masters Theses
No abstract provided.
Gravity Modeling Of A Patch Reef In Allegan County, Michigan, Mei Leng Wong
Gravity Modeling Of A Patch Reef In Allegan County, Michigan, Mei Leng Wong
Honors Theses
The study of the Diamond Springs oil field in Allegan County focuses on the use of gravity to delineate individual reef buildups. The Diamond Springs oil field is a small patch reef located in northern Allegan County, Michigan. The reef, which is approximately 1400 feet deep, is located within the Middle Devonian Traverse Limestone and was deposited in an open shelf, carbonate platform and lagoonal environment. The reef covers an area of approximately one square mile and has a vertical relief of 30 to 80 feet. These porous reef materials are commonly buried by muds or evaporites resulting in ideal …
The Hydrogeology Of Bonnie Castle And Dustin Lakes And Its Relationship To Groundwater Contamination From The Kl Avenue Landfill, Kalamazoo County, Michigan, Joseph S. Hobin
Masters Theses
The objectives of this investigation were to explain the hydrogeology of Bonnie Castle and Dustin Lakes and to assess the water quality of the lake environments with respect to possible impact from the KL Avenue Landfill.
The surface water/groundwater relationship was determined by the installation of mini-piezometer nests and seepage meters at selected study stations along the shoreline of each lake. Field data were augmented with groundwater and surface water chemical analyses, lake depth profiles and geologic cross-sections.
The result of this research was the characterization of Bonnie Castle Lake as a perched recharge lake and Dustin Lake as a …
Laboratory Studies Of Filter Pack Grain-Size Distributions And Hydrophobic Treatments To Enhance The Recovery Of Free-Phase Floating Hydrocarbons, Hugh Garret Heuvelhorst
Laboratory Studies Of Filter Pack Grain-Size Distributions And Hydrophobic Treatments To Enhance The Recovery Of Free-Phase Floating Hydrocarbons, Hugh Garret Heuvelhorst
Masters Theses
Experiments were conducted in laboratory sand tanks to evaluate filter pack design criteria in an effort to improve free-product hydrocarbon recovery from sand aquifers. Filter sands were prepared and installed in the test tanks to examine the relative efficiency of two different grain sizes and two different grain-size distributions to imbibe kerosene from the formation sand and release it to their respective wells. Treatments of different chemical products were applied to other filter sands to create a hydrophobic coating on the grains. The hydrophobic coatings were tested on filter sands of different grain sizes and grain-size distributions and compared to …
Groundwater Chemistry Analysis Of The Saginaw Formation In Delhi Township, Michigan, Sam L. Kitchin
Groundwater Chemistry Analysis Of The Saginaw Formation In Delhi Township, Michigan, Sam L. Kitchin
Masters Theses
Groundwater chemistry and well data provided by the Ingham County (Michigan) Health Department were used to evaluate the distribution of inorganic chemical constituents in the groundwater flow system of the Saginaw Formation, in Delhi Township, Michigan. The data also were used to study the distribution of chemical constituents with respect to different rock types of the Saginaw Formation. The data were analyzed to examine if variations in the concentrations of the chemical constituents and the values of other chemical parameters relate to rock-water interactions, groundwater flow systems, or groundwater contamination.
The results indicate that patterns of increasing or decreasing concentrations …
A Fracture Analysis Of Glacial Tills In Southwest Michigan, Ralph L. Freed
A Fracture Analysis Of Glacial Tills In Southwest Michigan, Ralph L. Freed
Masters Theses
Fractures were recorded and measured at seven southwest Michigan glacial till locations to identify geometry and spacing. Strong preferred orientations were shown at azimuths of 110° and 140° for two sites, and at azimuths of 85°, 110°, and 135°, and at 44° and 167° for two sites. Several sites had numerous oblique fractures.
Thirty-eight azimuthal Wenner arrays and four Schlumberger surveys show apparent resistivities vary widely with depth of penetration and material composition. Eleven percent of azimuthal surveys show an elliptical data array coinciding with preferred orientation of an adjacent fracture set. The relationship between azimuthal survey and fractures is …
The Effects Of Composting Of Yard Wastes On The Ground-Water Quality: Wmu Farms Site, Kalamazoo, Michigan, Bryan Kirk Allen
The Effects Of Composting Of Yard Wastes On The Ground-Water Quality: Wmu Farms Site, Kalamazoo, Michigan, Bryan Kirk Allen
Masters Theses
In the rush to find alternatives to landfilling of yard waste, federal and state agencies have identified composting as the main solution. There is therefore a need to address the possible environmental problems which could be associated with such composting operations. Compost may contain nutrients, organic acids, pesticides, and metals which could leach through soils to the ground water posing a potential contamination problem.
At the WMU Farms Site, two sites have been used for the composting of leaves by the City of Kalamazoo. The physical and chemical hydrogeology of these sites were characterized.
The results suggest that the presence …
Ground-Water Contamination By Volatile Organic Compounds: Sources Of Error, Temporal And Spatial Variability, Gary Thomas Blinkiewicz
Ground-Water Contamination By Volatile Organic Compounds: Sources Of Error, Temporal And Spatial Variability, Gary Thomas Blinkiewicz
Masters Theses
Data on the distributions of VOC’s (volatile organic compounds), principally trichloroethane and dichloroethylenes, in a shallow sand and gravel aquifer near Rockford, IL have been collected for a number of years. Synoptic sampling events from a dense monitoring well network within a greater than 4 mi^2 area, provide the basis for the evaluation of sources of variability in concentrations in space and time. Sampling, and analysis-related variability in these data contribute less than 10% of total variance. Spatial and temporal variability over periods of months to years are significant Results suggest that contaminant distributions can be resolved best by using …
Improved Filter-Pack Design For Hydrocarbon Recovery Wells In Unconsolidated Aquifers, Thomas R. Barrett
Improved Filter-Pack Design For Hydrocarbon Recovery Wells In Unconsolidated Aquifers, Thomas R. Barrett
Masters Theses
Laboratory sand tank experiments and two field studies were conducted to determine filter-pack designs that would increase the hydrocarbon flow rate into hydrocarbon recovery wells. Previous laboratory experiments have shown that using filter-packs of Teflon chips or sands treated with a water repellent spray will increase the rate of hydrocarbon recovery into wells in laboratory bail down test experiments.
The results of the laboratory investigations suggest that using a hydrophobic filter-pack with a median grain-size of 2.5-3.5 greater than that of the aquifer will provide the greatest rate of hydrocarbon recovery.
In two field studies, wells constructed with a hydrophobic …
Geology Newsletter- 1992, Department Of Geology
Geology Newsletter- 1992, Department Of Geology
Geological and Environmental Sciences News
Vol.1, No. 17
- Faculty News
- Alumni/ Friends/ Former Faculty Notes
- New Alumni
- Awards and Scholarships
- Geology Development and Scholarship Donations
- Service Staff News
- Grand Canyon Raft Adventure
A Study Of Ground-Water Quality In A Priority Agricultural And Livestock Watershed, Cass County, Michigan, Matthew Alan Stuk
A Study Of Ground-Water Quality In A Priority Agricultural And Livestock Watershed, Cass County, Michigan, Matthew Alan Stuk
Masters Theses
A study of ground-water contamination in a shallow, sandy, glacial drift aquifer was performed in a watershed dominated by swine feedlots and crop fields in Cass County, Michigan. Monitoring wells were installed and sampled to study the flow pattern, chemistry, and contamination of ground water.
Results of chemical analyses show contamination from fertilizers and other soil-applied chemicals as well as the infiltration of breakdown products from pig waste. Shallow wells in impacted areas show potassium and nitrate from the breakdown of fertilizers, calcium from field application of lime, and additional nitrate from pig waste. Elevated calcium, potassium, and nitrate concentrations …
Use Of Geology And Petrophysics In The Characterization Of St. Peter Sandstone Reservoirs, Rusli Bin Adam
Use Of Geology And Petrophysics In The Characterization Of St. Peter Sandstone Reservoirs, Rusli Bin Adam
Masters Theses
Core samples and petrophysical data from three reservoir intervals within the Middle Ordovician St. Peter Sandstone in the Michigan basin were utilized to assess the reservoir performance. Each reservoir interval coincides with major sedimentary facies which are in gradational contact with one another vertically and laterally throughout the basin. Reservoirs in the lower portions of the formation (reservoir type 1) are dominated by meso-intercrystalline porosity. This predominantly quartz cemented reservoir rock type is characterized by low porosity with high permeability, moderate pore apertures, and moderate irreducible water saturation. Reservoirs at the top of the formation (reservoir type 3) are dominated …
Calcite Cementation Of Pleistocene Glacial Deposits In Southwest Michigan, Robert Lee Tolliver
Calcite Cementation Of Pleistocene Glacial Deposits In Southwest Michigan, Robert Lee Tolliver
Masters Theses
No abstract provided.
The Application Of A Statistical Trend Analysis Program To Ground-Water Quality Monitoring Data From Eight Western Michigan Solid Waste Landfills, Amy Decosta Lachance
The Application Of A Statistical Trend Analysis Program To Ground-Water Quality Monitoring Data From Eight Western Michigan Solid Waste Landfills, Amy Decosta Lachance
Masters Theses
A statistical analysis and interpretation of ground-water chemistry data from eight landfills in Western Michigan was performed. Data were collected over approximately the past ten years, pursuant to the requirements of Michigan's Solid Waste Management Act. A statistical regression model was used to reduce the data to identifiable trends and estimated magnitudes. These results were analyzed with respect to each landfill's characteristics and hydrogeological setting. Comparisons were made concerning the landfills' relative potential for environmental harm. Also, the effectiveness and applicability of this model to the analysis of ground-water monitoring data was assessed.
It was concluded that this analysis and …
Hydrogeologic Characterization Of A Multi-Aquifer System At Station 11 In Kalamazoo, Michigan, Linda G. Jones
Hydrogeologic Characterization Of A Multi-Aquifer System At Station 11 In Kalamazoo, Michigan, Linda G. Jones
Masters Theses
The purpose of this study was to determine the hydraulic connection between the upper and lower confined glacial drift aquifers. The results of this study are based primarily upon the geologic profiles, a comparison of the head differences within each aquifer, potentiometric surfaces and different lag times for precipitation to reach each aquifer.
Results of the aquifer test showed that the upper confining layer pinches out in the western part of the well field. This area also provided significant recharge to the well field during the aquifer test. Data collected during the aquifer test and the increases in water levels …