The Bible's Flood account describes fountains bursting forth followed by enormous rain, global sea level rise, the death and the blotting out of air breathing land animals, along with man. The following model is proposed: 1. The initial Flood stage was characterized by venting of acidic water and rainfall, together with high energy erosion and deposition. Upper Proterozoic mixtites formed from mass flows downslope from land into the seas. 2. The blotting out process meant the death of terrestrial vertebrates (land animals) everywhere, as well as the dissolution of vertebrate bones (and invertebrate shells) under acidic and erosive conditions in the vicinity of volcanic fountains. 3. On shelfal areas at greater distances from the fountains, ocean chemistry was more normal, that is, slightly alkaline. This enabled dissolved bones (and shells) to precipitate out as amorphous phosphorite deposits. All continents excepting Antarctica, to date, are known to have Precambrian-Cambrian transition phosphorites and these phosphorite deposits are generally found stratigraphically above Upper Proterozoic mixtites. Thus this paper highlights geochemical evidence within a biblical Flood framework and proposes that terrestrial vertebrates close to the Flood fountains were dissolved and then precipitated out to form Precambrian-Cambrian transition sedimentary phosphate deposits.