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Aquitardifer: A New Hydrogeologic Term for Geologic Materials with both Aquitard and Aquifer Properties
Journal article   Open access   Peer reviewed

Aquitardifer: A New Hydrogeologic Term for Geologic Materials with both Aquitard and Aquifer Properties

Anthony C. Runkel and Jessica R. Meyer
Ground water, Vol.64(1), pp.9-20
01/2026
DOI: 10.1111/gwat.70022
PMCID: PMC12857523
PMID: 40922506
url
https://doi.org/10.1111/gwat.70022View
Published (Version of record) Open Access

Abstract

We propose that a new term, aquitardifer, be added to the hydrogeologic nomenclature. Aquitardifer, a blend of the terms aquitard and aquifer, accounts for geologic materials that have properties of both as traditionally defined. Several examples of aquitardifers are provided, as is justification for and applicability of the term.

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