Chlorine dating

The addition of Cl can be evaluated by measurement of the Cl and other ionic concentrations in the water, in-situ production can be estimated after a measurement of aquifer U and Th concentrations, and precipitation input values can be estimated using present-day local values.For the determination of water transit times between two sampling locations instead of the absolute age of the water, the value measured at the upgradient location is used as the input value.One such study found that chlorinated solvents (TCE, PCA, and TCE) supplied by different manufacturers had distinctive C and Cl isotopic signatures (Aravena et al., 1996).This appears to be a very promising avenue of research, although the analysis of Please contact Carol Kendall ([email protected]gov) for questions and comments regarding this page. The “Continental Intercalaire” from Sahara is one of the largest confined aquifers in the world.

Chlorine-36 is produced in the upper atmosphere through spallation reactions.The attractiveness of chlorine in hydrologic studies is that it is highly soluble, exists in nature as a conservative non-sorbing anion, does not participate in redox reactions, and has some quickly identifiable sources (e.g., seawater).The abundance of Cl/Cl ratios (Bentley et al., 1986; Phillips et al., 1986; Nolte et al., 1991).When a muon interacts with a calcium or potassium atom (both are commonly found in minerals at the earth's surface), Cl y where the neutrons in the above reaction are produced in deep subsurface aquifers from the spontaneous radioactive decay of uranium and thorium.To a smaller extent, potassium can absorb neutrons from these same decay reactions and produce Cl y Early tests were conducted on Pacific Ocean atolls.

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