Hydrology and Geochemistry of Thermal Springs of the Appalachians PDF Download
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Author: William A. Hobba
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 44
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Book Description
A study of the geologic and hydrologic setting and the physical and chemical character of selected major warm springs of the Appalachians.
Author: William A. Hobba
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 44
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Book Description
A study of the geologic and hydrologic setting and the physical and chemical character of selected major warm springs of the Appalachians.
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 35
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Book Description
Author: William A. Hobba
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 36
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Thermal springs in nine areas in the Appalachians from Georgia to New York were studied in 1975 and 1976 using satellite imagery, local well and spring data, and results of current and early studies by other investigators. All the springs investigated discharge from folded and faulted sandstone or carbonate rocks in valley areas. Where geologic structure is relatively uncomplicated, ground water discharging from thermal springs probably has circulated to great depths roughly parallel to the strike of the bedding and has moved upward rapidly where a fault or faults cross the bedding. Hydrologic and chemical data suggest that most of the water discharging from warm springs in the Devonian Oriskany Sandstone is derived from recharge entering and circulating through that formation. The discharge at springs where temperature fluctuates very little is primarily water from deep circulation. The discharge at springs where temperature fluctuates widely is warm water mixed with variable proportions of shallow-circulating cool water. Observed temperatures of the warm springs range from 18° to 41°C; the highest chemical thermometer temperature is 84°C. Agreement among observed, chalcedony, and cation temperatures of the warmest springs suggests reservoir temperatures of 30° to 50°C. Dissolved helium, arsenic, potassium, and delta18O are considered as geothermal indicators. Tritium analyses are used to calculate fractions of old and modern components of mixed waters. Computer calculations of carbonate saturation indices show (1) considerable undersaturation in silica-rock warm spring waters and (2) carbonate equilibrium in the limestone and dolomite thermal waters. Better values of saturation indices are obtained when analyzed carbon dioxide rather than field pH is used in the computer input data. A method is described for adjusting delta13C to correct for carbon dioxide outgassing from water samples.
Author: William A. Hobba
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 68
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Author:
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ISBN:
Category :
Languages : en
Pages :
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Author: Harold William Young
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 56
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 594
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 464
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Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 258
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