Cobalt-deficient areas
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Cobalt-deficient areas
Soils on the Volcanic Plateau lack the trace element cobalt – a deficiency that causes disease in farm animals. The region is where two major eruptions, Taupō (about 200 AD) and Kaharoa (about 1314 AD), deposited layers of cobalt-deficient, soil-forming ash.
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Te Ara - The Encyclopedia of New Zealand
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