PLATINUM GROUP ELEMENTS IN PERMO–TRIASSIC VOLCANICS IN WEST SIBERIA (
the first data)
A.Ya. Medvedev
Keywords: Platinum group elements, basalt, West Siberia
Abstract
The first data on PGE contents in the volcanic rocks of the West Siberian Plate are presented. Analysis has shown that most of the studied rocks have clarke contents of these elements. Rocks from the central areas of paleorift valleys are enriched in ∑PGE (2.0–32.0 ppb), particularly in Pt (0.1–24.2 ppb) and Pd (0.3–8.0 ppb), which might be related to the action of plume. The magmatic PGE pattern confirms the earlier conclusions about the mantle genesis of the studied rocks.
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