36Cl: A tracer in groundwater in the aquia formation of Southern Maryland

Caroline B. Purdy; Alice C. Mignerey; George R. Helz; David D. Drummond; Peter W. Kubik; David Elmore; Thomas Hemmick

doi:10.1016/0168-583X(87)90266-7

³⁶Cl: A tracer in groundwater in the aquia formation of Southern Maryland

Caroline B. Purdy
, Alice C. Mignerey
, George R. Helz
, David D. Drummond
, Peter W. Kubik
, David Elmore
, Thomas Hemmick

Physics and Astronomy

University of Maryland, College Park
State of Maryland
University of Rochester

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The Aquia Formation (Paleocene) of Southern Maryland, a marine unit consisting predominantly of quartz sands, but containing 20-40% glauconite, represents one of the many productive, heavily pumped aquifers of the Southeastern Coastal Plain. An unusually high ³⁶Cl activity ( ~ 15 × modem water) measured in an outcrop sample is interpreted as a result of the bomb pulse input. About 25 km downdip from the recharge area, a minimum in total chloride concentration occurs. This minimum is thought to correlate with the latest low-stand of sea-level, and thus to provide time information which is in general agreement with ages calculated from hydrodynamic data. However, significant increases in the ³⁶Cl concentrations are observed along the flow path which may be due to ion filtration or to leakage of modem, bomb-contaminated water into the Aquia aquifer.

Original language	English
Pages (from-to)	372-375
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	29
Issue number	1-2
DOIs	https://doi.org/10.1016/0168-583X(87)90266-7
State	Published - Nov 2 1987

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title = "36Cl: A tracer in groundwater in the aquia formation of Southern Maryland",

abstract = "The Aquia Formation (Paleocene) of Southern Maryland, a marine unit consisting predominantly of quartz sands, but containing 20-40\% glauconite, represents one of the many productive, heavily pumped aquifers of the Southeastern Coastal Plain. An unusually high 36Cl activity ( \textasciitilde{} 15 × modem water) measured in an outcrop sample is interpreted as a result of the bomb pulse input. About 25 km downdip from the recharge area, a minimum in total chloride concentration occurs. This minimum is thought to correlate with the latest low-stand of sea-level, and thus to provide time information which is in general agreement with ages calculated from hydrodynamic data. However, significant increases in the 36Cl concentrations are observed along the flow path which may be due to ion filtration or to leakage of modem, bomb-contaminated water into the Aquia aquifer.",

author = "Purdy, \{Caroline B.\} and Mignerey, \{Alice C.\} and Helz, \{George R.\} and Drummond, \{David D.\} and Kubik, \{Peter W.\} and David Elmore and Thomas Hemmick",

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doi = "10.1016/0168-583X(87)90266-7",

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T1 - 36Cl

T2 - A tracer in groundwater in the aquia formation of Southern Maryland

AU - Purdy, Caroline B.

AU - Mignerey, Alice C.

AU - Helz, George R.

AU - Drummond, David D.

AU - Kubik, Peter W.

AU - Elmore, David

AU - Hemmick, Thomas

PY - 1987/11/2

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N2 - The Aquia Formation (Paleocene) of Southern Maryland, a marine unit consisting predominantly of quartz sands, but containing 20-40% glauconite, represents one of the many productive, heavily pumped aquifers of the Southeastern Coastal Plain. An unusually high 36Cl activity ( ~ 15 × modem water) measured in an outcrop sample is interpreted as a result of the bomb pulse input. About 25 km downdip from the recharge area, a minimum in total chloride concentration occurs. This minimum is thought to correlate with the latest low-stand of sea-level, and thus to provide time information which is in general agreement with ages calculated from hydrodynamic data. However, significant increases in the 36Cl concentrations are observed along the flow path which may be due to ion filtration or to leakage of modem, bomb-contaminated water into the Aquia aquifer.

AB - The Aquia Formation (Paleocene) of Southern Maryland, a marine unit consisting predominantly of quartz sands, but containing 20-40% glauconite, represents one of the many productive, heavily pumped aquifers of the Southeastern Coastal Plain. An unusually high 36Cl activity ( ~ 15 × modem water) measured in an outcrop sample is interpreted as a result of the bomb pulse input. About 25 km downdip from the recharge area, a minimum in total chloride concentration occurs. This minimum is thought to correlate with the latest low-stand of sea-level, and thus to provide time information which is in general agreement with ages calculated from hydrodynamic data. However, significant increases in the 36Cl concentrations are observed along the flow path which may be due to ion filtration or to leakage of modem, bomb-contaminated water into the Aquia aquifer.

UR - https://www.scopus.com/pages/publications/0023454860

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DO - 10.1016/0168-583X(87)90266-7

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JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 1-2

ER -

³⁶Cl: A tracer in groundwater in the aquia formation of Southern Maryland

Abstract

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