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Geochemical Baseline Survery of the Environment for the UK [G-BASE]

Natural abundances of chemical elements in stream sediments, stream water and soil samples systematically collected since 1968. The average sample density for stream sediments and water is about one site per 1.5-2km square, and for soils one site per 2km square.

The data provide baseline information on the natural abundances of elements, against which anomalous values due to such factors as mineralisation and industrial contamination may be compared.

Analysed elements include Ag, As, B, Ba, Bi, Be, Ca, Ce, Cd, Co, Cr, Cs, Cu, Fe, Ga, K, La, Li, Mg, Mn, Mo, Nb, Ni, P, Pb, Rb, Sb, Se, Sn, Sr, Th, Ti, U, V, Y, Zn, and Zr in stream sediments and soils and alkalinity, pH, conductivity, F and U and some for multi-element analyses including Al, Cl, Na, Si, SO4,NO4, and TOC for water.

Data products are available for partial Great Britain coverage, for the South-West, and for soils in UK urban areas.