Hydrogeology and hydrochemistry of the Milk River aquifer system, Alberta, Canada: a review

Hendry, M. Jim; Schwartz, Franklin W.; Robertson, Craig

doi:10.1016/0883-2927(91)90037-p

Cited by 35 publications

(13 citation statements)

References 13 publications

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“…(18), the lower limits of groundwater age are calculated to be 27.1 and 75.2 kyr for Wells 8 and 9, respectively, assuming initially atmospheric 40 Ar= 36 Ar ratios. The 'age' corresponds to the accumulation time of Ar in the fluid, and these lower limit ages are in rough agreement with the estimated residence time of the groundwater in this region (Hendry et al, 1991;Nolte et al, 1991). The a=/ R ratios obtained from Eq.…”

Section: Case Studiesmentioning

confidence: 87%

Determination of crustal fluid residence times using nucleogenic 39Ar

Yokochi

Sturchio

Purtschert

2012

Geochimica et Cosmochimica Acta

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Section: Case Studiesmentioning

confidence: 87%

Determination of crustal fluid residence times using nucleogenic 39Ar

Yokochi

Sturchio

Purtschert

2012

Geochimica et Cosmochimica Acta

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“…Groundwater movement is to the north, west and east. Dissolved CI and I concentrations increase in the direction of the flow from <0.05 and 0.001 mmol/1 respectively, near the recharge area to >140 and 0.15 mmol/1 at the northern edge of the aquifer [75]. Similarly, δ 18 tures for groundwaters collected near the recharge area plot on the global meteoric line but increasingly deviate from it with distance down flow [76].…”

Section: Dating Of Old Groundwatersmentioning

confidence: 95%

Uranium Series Disequilibrium: Concepts and Applications

Ivanovich

1994

Radiochimica Acta

128

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During the past four decades it has been recognized that natural disruption of the U and Th decay chains, resulting in the separation of parent and daughter nuclides, occurs as a consequence of geochemical processes acting in the near-surface environment. This realization has lead to a rapid growth in the application of the naturally occurring radioactive disequilibria diversifying broadly to touch upon a wide spectrum of problems in earth sciences.This paper is a brief review of the subject and addresses a number of issues concerning (1) physico-chemical processes responsible for fractionation of radionuclides in the decay series, (2) the range of observed radioactive disequilibrium in nature, (3) implications in terms of relative mobilities of U, Th, Ra and their daughters in the geosphere, and (4) examples of the application of these concepts to studies of paleoclimate, dating of old groundwaters, and rock/water interaction processes.This review concludes that the concept of radioactive disequilibrium in naturally occurring decay series is a powerful isotopic tool with applications in both terrestrial and marine environments over timescales of up to one million years.

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“…In the English Chalk aquifer, for example, groundwater evolution along fl ow paths has been used as a means of characterising baseline groundwater quality and recognising recent inputs infl uenced by pollution from entirely natural trends in deeper, older waters (Edmunds et al 1987). Studies of hydrogeochemistry in dated palaeowaters have also been carried out by Hendry et al (1991) for the well-characterised Milk River aquifer in Canada. Several studies have been carried out on aquifers in the USA as part of the Regional Aquifer Simulation Analysis programme, providing a sound geochemical framework for understanding natural (and polluted) water quality.…”

Section: Past Approaches To Identifying Baselinementioning

confidence: 99%

Groundwater Baseline Quality

Edmunds

Shand

2008

Natural Groundwater Quality

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Naturally occurring groundwaters are becoming increasingly impacted by human infl uences. It is important to develop criteria to recognise the extent and baseline characteristics of groundwater bodies as a basis of management and specifi cally as a starting point to recognise pollution. The baseline concept is reviewed and a defi nition adopted for use in the chapters of this book. Emphasis is placed on developing a sound understanding of the spatial and temporal distribution of water quality, in relation to hydrogeological and geochemical controls. The main geochemical controls on natural baseline chemistry, which usually accounts for 98% of the mineral composition of groundwater, are outlined. The various approaches available for baseline defi nition are then reviewed. Statistical tools are used as a fi rst step, but cannot explain the variance in the data for which a resort to the fi eld situation and use of historical data is required. The median and 97.7 percentile are adopted as the main statistical parameters for initially defi ning baseline and comparing different data sets.

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Hydrogeology and hydrochemistry of the Milk River aquifer system, Alberta, Canada: a review

Cited by 35 publications

References 13 publications

Determination of crustal fluid residence times using nucleogenic 39Ar

Determination of crustal fluid residence times using nucleogenic 39Ar

Uranium Series Disequilibrium: Concepts and Applications

Groundwater Baseline Quality

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