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In addition, other members of the particle-reactive group also have sufficiently low diffusion coefficients in Fe grains is so much more effective than uranium adsorption that for young sediments the uranium-supported component (i.e.

the component in secular equilibrium) can be effectively ignored.

12.17), and varied by more than an order of magnitude. For example, the method has become an important tool in studying the history of heavy metal pollution of coastal waters and lakes.

and most refined of the radiometric dating schemes.

This is attributed to the good preservation of submarine coral systems.