Abstract
The study of paleogroundwater on a timescale of several thousands to a million years is interesting both in terms of understanding the aquifer system itself and water resource management. It may also provide valuable information about paleoclimate. 81Kr is an ideal age tracer for paleogroundwater up to 1.3 million years old. Recent developments in the Atom Trap Trace Analysis method have made 81Kr dating available to the earth science community at large.
Highlights
Paleogroundwater can be both a valuable water resource and an archive that holds the local precipitation record for the past millions of years [1,2,3,4,5,6]
Characterizing paleogroundwater requires a series of reliable age tracers capable of covering a large age range up to 1 million years and dealing with the complicated situations frequently encountered in large deep aquifer systems
Recent rapid progress on radiokrypton dating has enabled more and broader applications [11,12,13,14,15,16]. This paper describes these recent advancements, including the latest developments in our laboratory and discusses how this new technology may impact the study of paleogroundwater
Summary
Paleogroundwater can be both a valuable water resource and an archive that holds the local precipitation record for the past millions of years [1,2,3,4,5,6]. Characterizing paleogroundwater requires a series of reliable age tracers capable of covering a large age range up to 1 million years and dealing with the complicated situations frequently encountered in large deep aquifer systems. Recent rapid progress on radiokrypton dating has enabled more and broader applications [11,12,13,14,15,16]. This paper describes these recent advancements, including the latest developments in our laboratory and discusses how this new technology may impact the study of paleogroundwater
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