aquitard


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Related to aquitard: Aquiclude, aquifuge

aquitard

[′ak·wə‚tärd]
(geology)
A bed of low permeability adjacent to an aquifer; may serve as a storage unit for groundwater, although it does not yield water readily.
References in periodicals archive ?
Mark Jensen, Director of NWMO Geoscience Research, began the afternoon session by introducing the proposed Bruce Deep Geologic Repository site, discussing the history of the DGR project, site characterization and geoscience planning activities, synthesis of the geological research and aquitard characterization, and the next steps to be taken towards repository permitting and construction at the Bruce DGR site.
The 2nd factor loaded with pH and K, clarify the aquitard diffusion that depend upon the pH condition.
The Permian is overlain by up to 250 m thick Lower Triassic red-bed mudstones representing the regional-scale aquitard.
Johnson (1987a) showed that these preferred pathways provided a bypass mechanism through the aquitard and that they are widely distributed, although they only make up a small proportion of the landscape.
This aquitard was an important component of passive containment for the arsenic contaminated groundwater.
2004) System Formation, Aquifer Aquitard stage system Quaternary (Q) Quaternary (Q) Glaciolacustrine varved clay (lgQIII), loamy glacigenic deposits (gQIII) Daugava Dubniki Upper Devonian ([D.
The mine is deep and the overburden includes the Oandu-age relative aquitard, therefore the contribution of precipitation to mine water was only 13% in 1999.
George (1992) considered the pallid zone to be the aquitard that separated the deep from the shallow aquifers, and that the principal aquifer associated with the development of dryland salinity was in the saprolite.
Many references were taken from conference proceeding abstracts given in Mass Transport in Fractured Aquifers and Aquitards (Jorgensen, Skjernaa, and others 1998).
The Cambrian-Vendian aquifer system is covered by 50-100 m thick Cambrian clays that form the laterally continuous Lontova aquitard.