Search Results - "dacite"

El nitrógeno en los suelos derivados de cenizas volcánicas del Altiplano de Pasto, Colombia by Molina A, Cruz E., BLASCO L, M.

“…The rock types and pyroclastic materials are of andesitic-dacitic composition. The volcanic ash soils studied have adequate amounts of total-N (about 4,000 ppm) and organic-N (95 per cent of total-N). …”
Get full text