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Groundwater flow systems and the origin of evaporite deposits. Pamphlet 141 Item Info

Study of the literature on evaporite mineral deposits suggests a functional realtionship between the origin of these deposits and ground-water flow systems. The theory on which the analysis of ground-water flow systems is based is reviewed in order to establish flow systems as a mechanism by which dissolved solids can be transported to sites of evaporite mineral accumulation. Comparison of observed spatial variations of ground-water quality with pertinent solutions to flow equations under specified boundary conditions reveals that quality of ground water is a function of flow path length, flow path route and flow velocity. Selected references provide evidence that sites of accumulation of non-marine evaporite minerals are discharge zones for poor quality water from regional ground-water flow systems. A study of isotope ratios in oil field brines and standard mean ocean water indicates that water in some deep brines is of local meteoric origin; therefore, the brines are part of a ground-water flow system. Observed distribution of fluid potential in the saline portion of some ground-water flow systems on the Atlantic Coast of the United States reveals that saline ground water discharges toward the ocean floor. Therefore, ground water may also act as a transport medium for dissolved solids which are precipitated, under appropriate conditions, as marine evaporite deposits.

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Title:
Groundwater flow systems and the origin of evaporite deposits. Pamphlet 141
Authors:
Williams, Roy E.
Date Created (ISO Standard):
1968-08
Description:
Study of the literature on evaporite mineral deposits suggests a functional realtionship between the origin of these deposits and ground-water flow systems. The theory on which the analysis of ground-water flow systems is based is reviewed in order to establish flow systems as a mechanism by which dissolved solids can be transported to sites of evaporite mineral accumulation. Comparison of observed spatial variations of ground-water quality with pertinent solutions to flow equations under specified boundary conditions reveals that quality of ground water is a function of flow path length, flow path route and flow velocity. Selected references provide evidence that sites of accumulation of non-marine evaporite minerals are discharge zones for poor quality water from regional ground-water flow systems. A study of isotope ratios in oil field brines and standard mean ocean water indicates that water in some deep brines is of local meteoric origin; therefore, the brines are part of a ground-water flow system. Observed distribution of fluid potential in the saline portion of some ground-water flow systems on the Atlantic Coast of the United States reveals that saline ground water discharges toward the ocean floor. Therefore, ground water may also act as a transport medium for dissolved solids which are precipitated, under appropriate conditions, as marine evaporite deposits.
Subjects:
groundwater flow
Collection:
Boise Basin
IWRRI number:
197023
Rights:
In copyright, educational use permitted. Educational use includes non-commercial reproduction of text and images in materials for teaching and research purposes. For other contexts beyond fair use, including digital reproduction, please contact the University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu. The University of Idaho Library is not liable for any violations of the law by users.
Publisher:
Idaho Bureau of Mines and Geology
Contributing Institution:
University of Idaho
Type:
Text
Format:
application/pdf
Cataloger:
wbv
Date Digitized:
2012

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Preferred Citation:
"Groundwater flow systems and the origin of evaporite deposits. Pamphlet 141", Idaho Waters Digital Library, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iwdl/items/iwdl-197023.html
Rights
Rights:
In copyright, educational use permitted. Educational use includes non-commercial reproduction of text and images in materials for teaching and research purposes. For other contexts beyond fair use, including digital reproduction, please contact the University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu. The University of Idaho Library is not liable for any violations of the law by users.
Standardized Rights:
http://rightsstatements.org/vocab/InC-EDU/1.0/
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