2020
DOI: 10.1016/j.jhydrol.2020.125512
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Rethinking a groundwater flow system using a multiple-tracer geochemical approach: A case study in Moab-Spanish Valley, Utah

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Cited by 4 publications
(4 citation statements)
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“…It is plausible that regional aquifer systems, such as the Jurassic Navajo and Entrada sandstones, turned over multiple times over the past few Ma, given groundwater residence times less than ca. 40 ka (Gardner et al., 2020; Noyes et al., 2021), possibly approaching the tens to hundreds of pore volumes required to biodegrade HC reservoirs. Slightly longer residence times of deeper aquifers (e.g., up to 1.2 Ma in Permian Cutler and Pennsylvanian Honaker Trail Fm (Kim, Ferguson, et al., 2022; Tyne et al., 2022)) and fewer pore volume turnovers may explain the general decrease in HC biodegradation extents with depth (Figure 7).…”
Section: Resultsmentioning
confidence: 99%
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“…It is plausible that regional aquifer systems, such as the Jurassic Navajo and Entrada sandstones, turned over multiple times over the past few Ma, given groundwater residence times less than ca. 40 ka (Gardner et al., 2020; Noyes et al., 2021), possibly approaching the tens to hundreds of pore volumes required to biodegrade HC reservoirs. Slightly longer residence times of deeper aquifers (e.g., up to 1.2 Ma in Permian Cutler and Pennsylvanian Honaker Trail Fm (Kim, Ferguson, et al., 2022; Tyne et al., 2022)) and fewer pore volume turnovers may explain the general decrease in HC biodegradation extents with depth (Figure 7).…”
Section: Resultsmentioning
confidence: 99%
“…1 Ma, based on 81 Kr and 4 He dating (Kim, Ferguson, et al., 2022; Tyne et al., 2022). In Jurassic and younger aquifers, waters are typically up to a few 10s of thousands of years old, based on 14 C dating (Gardner et al., 2020; Noyes et al., 2021).…”
Section: Introductionmentioning
confidence: 99%
“…However, with the intensification of industrial pollution, the concentration of Cl − in the atmosphere increases due to the massive emission or discharge of chlorinated compounds, and the Cl − supplied to the groundwater through rainfall continues to increase, which makes the groundwater in the vadose zone in some areas only present a Cl − type. For example, it's found that Cl − of the groundwater in vadose zones in some valleys may come from the atmosphere rather than geological bodies (Gardner et al, 2020). In some coastal areas, the initial type of groundwater may also show Cl − type due to the influence of seawater aerosol (Gao et al, 2017).…”
Section: New Theories Of Groundwater Chemical Evolutionmentioning
confidence: 99%
“…Methods that rely on groundwater testing are further limited by groundwater mixing as in the U.S. Southwest, groundwater is often derived from long-screen wells intercepting multiple transmissive units. In those instances, groundwater often represents a complex mixture of modern, MBGRderived proportions and premodern groundwater proportions, potentially derived externally via interbasin groundwater flow (IGF) (e.g., Bexfield et al, 2012;Hagedorn, 2015;Gardner et al, 2020).…”
Section: Introduction Backgroundmentioning
confidence: 99%