Geochemical Studies of Rocks, Water and Gases at Mt. Hood, Oregon PDF Download
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Author: Harold A. Wollenberg
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 76
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Author: Harold A. Wollenberg
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 76
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Author: Lawrence Berkeley Laboratory. Earth Sciences Division
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ISBN:
Category : Geochemistry
Languages : en
Pages : 57
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Author:
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ISBN:
Category :
Languages : en
Pages :
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Mr. Hood, a composite andesitic volcano, located near Portland, Oregon, is one of several large eruptive centers which dominate the Cascade Mountains of the western United States. As part of a program of geologic, geophysical and geochemical studies to examine Mt. Hood's geothermal resource potential, samples of warm-and cold-spring water, water from a geothermal test well in Old Maid Flat, fumarolic gases, and rocks were collected and analyzed for major chemical constituents and trace elements. The only warm-spring area on Mt. Hood is Swim Springs, located on the south flank. Orifices at Swim were sampled repeatedly with little overall change noted in water chemistry between summer and winter. Oxygen and hydrogen isotope data and mixing calculations based on analyses of Swim Springs and numerous cold springs, indicate that a large component of the warm water at Swim is from near-surface runoff. Chemical geothermometry suggests that temperatures at depth in the Swim Springs system are within the range 104 to 170°C; the temperature of unmixed hot water may exceed 200°C. Higher-than-background chloride contents and specific conductances of cold springs on the south flank of the mountain suggest that there is a small component of thermal water in these sources. A geothermal model of Mt. Hood is proposed wherein snow- and glacier-melt water near the summit comes in close promimity to the hot central neck of the mountain, manifested by the summit-crater fumaroles. Iridium was detected in warm and cold spring waters and in a sample of altered andesite.
Author:
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Category : Geothermal engineering
Languages : en
Pages : 650
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Author: Keith E. Bargar
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Category : Geology, Stratigraphic
Languages : en
Pages : 80
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A study of late Tertiary hydrothermal alteration corresponding to zeolite-facies to greenschist-facies metamorphism and Quaternary hydrothermal and fumarolic minerals from outcrops and geothermal drill holes near Mount Hood, Oregon.
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Category : Government publications
Languages : en
Pages : 1542
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Author:
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Category : Government publications
Languages : en
Pages : 1180
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Author: United States. Dept. of Energy. Division of Geothermal Energy
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Category : Geothermal engineering
Languages : en
Pages : 346
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Author:
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Category : Power resources
Languages : en
Pages : 440
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Author:
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ISBN:
Category : Geology
Languages : en
Pages : 192
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