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

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

By:
, , , , , ,
DOI: 10.1016/0168-583X(87)90266-7

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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. ?? 1987.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
36Cl: A tracer in groundwater in the aquia formation of Southern Maryland
Series title:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
DOI:
10.1016/0168-583X(87)90266-7
Volume
29
Issue:
1-2
Year Published:
1987
Language:
English
Publisher:
Elsevier
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
372
Last page:
375
Number of Pages:
4