confining unit

confining unit
   1. A hydrogeologic unit of impermeable or distinctly less permeable material bounding one or more aquifers and is a general term that replaces aquitard, aquifuge, aquiclude [22].
   2. Means a body of impermeable or distinctly less permeable material stratigraphically adjacent to one or more aquifers [22].
   Synonymous with confining bed.

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

Look at other dictionaries:

  • confining bed —    A body of impermeable or distinctly less permeable material stratigraphically adjacent to one or more aquifers [22].    Synonymous with confining unit …   Lexicon of Cave and Karst Terminology

  • confining zone —    A geological formation, group of formations, or part of a formation that is capable of limiting fluid movement above an injection zone [22].    See confining unit …   Lexicon of Cave and Karst Terminology

  • geohydrologic unit —    An aquifer, a confining unit or a combination of aquifers and confining units comprising a framework for a reasonably distinct geohydrologic system [22] …   Lexicon of Cave and Karst Terminology

  • aquitard —    A confining bed that retards but does not prevent the flow of water to or from an adjacent aquifer; a leaky confining bed. It does not readily yield water to wells or springs, but may serve as a storage unit for ground water [22]. See also… …   Lexicon of Cave and Karst Terminology

  • ground water, confined —    Ground water under pressure significantly greater than atmospheric and whose upper limit is the bottom of a confining unit [22].    See also confined; confining unit; confined aquifer …   Lexicon of Cave and Karst Terminology

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  • Chipola Formation — Stratigraphic range: Late Oligocene Early Miocene Type Geological formation Unit of Alum Bluff Group Lithology Primary Dolostone, phosphate …   Wikipedia

  • Ocala Limestone — Stratigraphic range: Eocene Type Geological formation Underlies Suwannee Limestone (Oligocene) Overlies Avon Park Formation Thickness Lafayette Su …   Wikipedia

  • aquiclude —    A formation which, although porous and capable of storing water, does not transmit it at rates sufficient to furnish an appreciable supply for a well or spring.    See also confining unit [22] …   Lexicon of Cave and Karst Terminology

  • aquifuge —    A formation which has no interconnected openings or interstices and therefore neither stores nor transmits water [22].    See also confining unit …   Lexicon of Cave and Karst Terminology

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