Lithogenic element

Lithogenic elements are those which are directly inherited from the lithosphere (parent materials)... 

Pedogenic elements are of both lithogenic and anthropogenic origin, but their distribution and speciation are changed due to various pedogenic processes. 

Like U, Th is a component of the Earth s crust and is present in the lithogenic fraction of every marine sediment. As a result of its high particle reactivity, Th is rapidly removed from the water column. The Th activity in the ocean is very low (around 3 x 10 dpm or 0.1 ng/kg) and its distribution can be compared to that of other particle-reactive elements like A1 or Le. 

Using a peat core from Denmark which was cut into 1 cm slices and age dated using both °Pb and " 0 (atmospheric bomb pulse curve), Pb was separated into lithogenic and anthropogenic components using Ti as the reference element, and the isotopic composition of the Pb determined using TIMS [166]. The data show that the maximum concentration of anthropogenic Pb (1954)... 

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