Abstract

An anomalous Pb pattern occurs in drainage channel soils adjacent to the Elura Zn-Pb-Ag deposit and forms a fan shaped train extending at least 5 km on a mature weathering surface in semi-arid central-west New South Wales. This Pb pattern without a Zn component can be related to ferricrete fragments in the coarser fraction of the soil samples and has apparently formed as a result of mechanical dispersion of ferricrete from an earlier lateritic weathering profile. By considering residual Pb contents, after regressing for Fe content, the anomalous pattern can be extended and the contrast improved.

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