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  • 1
    Electronic Resource
    Electronic Resource
    Solute Changes During Aquifer Storage Recovery Testing in a Limestone/Clastic Aquifer (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 36 (1998), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Aquifer storage recovery (ASR) was tested in the Santee Limestone/Black Mingo Aquifer near Charleston, South Carolina, to assess the feasibility for subsurface storage of treated drinking water. Water quality data obtained during two representative ASR tests were interpreted to show three things: (1) recovery efficiency of ASR in this geological setting; (2) possible changes in physical characteristics of the aquifer during ASR testing; and (3) water quality changes and potability of recovered water during short (one- and six-day) storage durations in the predominantly carbonate aquifer.Recovery efficiency for both ASR tests reported here was 54%. Successive ASR tests increased aquifer permeability of the Santee Limestone/Black Mingo Aquifer. It is likely that aquifer permeability increased during short storage periods due to dissolution of carbonate minerals and amorphous silica in aquifer material by treated drinking water. Dissolution resulted in an estimated 0.3% increase in pore volume of the permeable zones. Ground water composition generally evolved from a sodium-calcium bicarbonate water to a sodium chloride water during storage and recovery. After short duration, stored water can exceed the U.S. Environmental Protection Agency maximum contaminant level (MCL) for chloride (250 mg/L). However, sulfate, fluoride, and tri-halomethane concentrations remained below MCLs during storage and recovery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1998.tb02809.x
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  • 2
    Electronic Resource
    Electronic Resource
    Leachate Geochemistry at a Municipal Landfill, Memphis, Tennessee (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 32 (1994), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: A leachate plume emanating from the Shelby County Landfill located at Memphis, Tennessee is defined using selected major and trace inorganic constituents. High specific conductance values and elevated concentrations of ammonia, barium, boron, calcium, chloride, dissolved solids, potassium, sodium, and strontium were measured in water samples from wells screened in the alluvial and Memphis aquifers downgradient from or proximal to the landfill. Of these constituents, barium, boron, chloride, and strontium were used in the geochemical model code PHREEQE to estimate the percent leachate component in selected Memphis aquifer samples. Estimates of the leachate component in samples from affected Memphis aquifer wells range from 5 to 37 percent for barium and strontium, the most reliable tracers found during this study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1994.tb00656.x
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  • 3
    Electronic Resource
    Electronic Resource
    Recognition of the 1811–1812 New Madrid earthquakes in Reelfoot Lake, Tennessee sediments using pollen data (1996)
    Springer
    Journal of paleolimnology 15 (1996), S. 183-191 
    Details
    ISSN: 1573-0417
    Keywords: earthquakes ; Mississippi Valley ; land-use change ; pollen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Reelfoot Lake is located within the New Madrid Seismic Zone, a region characterized by ongoing seismic activity and the locus of a series of large earthquakes (m b 〉7) during 1811–1812. Coseismic uplift and subsidence from the 1811–1812 events formed the lake basin from a partially inundated alluvial bottomland forest. Lithologic, chronologic, and palynologic data from a vibracore are used here to characterize the 1811–1812 earthquake record in lacustrine sediments. The stratigraphic record consists of a poorly consolidated upper silt, an intervening 10-cm sand layer, overlying a compact lower silt. Calibrated radiocarbon age estimates on wood samples from both silt units indicate deposition during historical time (1490–1890 AD). Better age estimates were obtained by correlating pollen assemblage data from the upper and lower silt with the historical record of land-use change in the Reelfoot Lake region. Two factors resulted in changing plant distributions (and hence pollen assemblages) in Reelfoot Lake sediments: 1) altered drainage patterns of Reelfoot Creek and Bayou de Chien resulting from 1811–1812 uplift and subsidence, and 2) deforestation and subsequent cultivation beginning approximately 1850 AD. The upper silt is characterized by a oak/cedar arboreal pollen (AP) assemblage, showing a mixture of upland and alluvial bottomland AP influx from the region to the open lake basin. Non-arboreal pollen (NAP) in the upper silt shows increasing abundance of Composites, particularly ragweed pollen indicating cultivation. This unit was deposited after the 1811–1812 earthquakes. The intervening sand layer was apparently emplaced by earthquake activity, or represents colluvium derived from most recent (1811–1812) coseismic uplift of Reelfoot scarp, which forms the western margin of the lake. The lower silt is characterized by a baldcypress/cedar AP assemblage with minor percentages of other flood-tolerant AP genera, interpreted as a baldcypress-dominated bottomland forest. Pollen influx in this environment is dominated by gravity-component deposition from local sources. The NAP in the lower silt shows that ragweed is rare or absent, suggesting pre-settlement conditions and deposition prior to 1811–1812.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00196780
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  • 4
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    Leachate Geochemistry at a Municipal Landfill, Memphis, Tennessee (1994)
    Wiley
    Details
    Publication Date: 1994-05-01
    Print ISSN: 0017-467X
    Electronic ISSN: 1745-6584
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Published by Wiley
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  • 5
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    Solute Changes During Aquifer Storage Recovery Testing in a Limestone/Clastic Aquifer (1998)
    Wiley
    Details
    Publication Date: 1998-05-01
    Print ISSN: 0017-467X
    Electronic ISSN: 1745-6584
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Published by Wiley
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  • 6
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    Arsenic Control During Aquifer Storage Recovery Cycle Tests in the Floridan Aquifer (2012)
    Wiley
    Details
    Publication Date: 2012-10-01
    Print ISSN: 0017-467X
    Electronic ISSN: 1745-6584
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Published by Wiley
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  • 7
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    Aminostratigraphic Correlation and Geochronology of Two Quaternary Loess Localities, Central Mississippi Valley (1994)
    Cambridge University Press
    Details
    Publication Date: 1994-05-01
    Description: Amino acid epimeric (aIle/Ile) values from terrestrial molluscs are used to define and correlate three aminozones in loess sequences exposed across the central Mississippi Valley, in Arkansas and Tennessee. Three superposed aminozones are defined at Wittsburg quarry, Arkansas, primarily using aIle/Ile values from total hydrolysates of the gastropod genus Hendersonia: Peoria Loess (aIle/Ile = 0.07 ± 0.01), Roxana Silt (0.14 ± 0.02), and a third loess (0.28 ± 0.06). Loess units at Wittsburg quarry can be correlated on lithologic characteristics eastward across the Mississippi Valley to the Old River section, near Memphis, Tennessee; however, only one loess unit is fossil-bearing (Peoria Loess, aIle/Ile = 0.05) at that section. Radiocarbon analyses of charcoal from the upper Roxana Silt (ca. 26,000 to 29,000 yr old) and mollusc shell carbonate from the basal Roxana Silt (ca. 39,000 yr old) are used to calibrate amino acid epimeric data for the central Mississippi Valley. These data, applied to the apparent parabolic kinetic model of R. M. Mitterer and N. Kriausakul (1989, Quaternary Science Reviews 8, 353-357), suggest an Illinoian (〉120,000 yr) age for the third loess in the central Mississippi Valley that is correlative with part of the Loveland Loess in Illinois and Iowa.
    Print ISSN: 0033-5894
    Electronic ISSN: 1096-0287
    Topics: Geography , Geosciences
    Published by Cambridge University Press
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