Usgs dating groundwater using c 14
USGS Scientific Investigations Report 2011-5198, 152 p.
L., 2012, Quantifying components of the hydrologic cycle in Virginia using chemical hydrograph separation and multiple regression analysis.
Two international inter-comparison exercises devoted to dissolved gases and isotope analyses in groundwater, used as tools for groundwater dating were organized in 2012 in France (IDES – Université Paris Sud – CNRS and OSUR – Université Rennes 1 – CNRS).
The goal was to compare sampling and analytical protocols through results obtained by the community of groundwater dating laboratories.
M., 2009, Porewater chemistry of the ICDP-USGS Eyreville deep core hole, implications for paleohydrology, water resources, and microbial habitat: In, Gohn et al, eds., The ICDP-USGS Deep Drilling Project in the Chesapeake Bay Impact Structure: Results from the Eyreville core holes.
It can be concluded that the pumped groundwater composition remained constant during sampling.
This study also shows the potential for relatively constant pumped groundwater composition from a specific well despite the complexity and/or mixing processes that may occur at a larger scale in the aquifer.
The two tests allowed 31 laboratories from 14 countries to compare their protocols for both sampling and analyses.
This paper presents the participants and parameters measured, and focuses on the validation of the sampling strategy.