Geochemistry of phosphorus and origin of phosphorites: Communication 2. Sources of phosphorus in continents and genesis of marine phosphorites

It is shown that terrigenous apatite in soil, weathering crusts, and low peat bogs of humid zones is transformed into hydrogenous forms and solutions. In arid environments, apatite is transported to terminal disc- char-e basins and transformed within diagenetic mud. Continental blocks are the main source of phosphorus in originates from two sources (continents and seawater) in oceans. The role epicontinental and marginal seas. It origin of biogenic factor in phosphorus geochemistry is significant, variable, and manifested at different stages of phoshogenesis.