6. The deep ocean is richer in phosphate ions than the surface, but phosphate nodules form in shallow water 7. The silic

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6 The Deep Ocean Is Richer In Phosphate Ions Than The Surface But Phosphate Nodules Form In Shallow Water 7 The Silic 1 (19.28 KiB) Viewed 51 times

6. The deep ocean is richer in phosphate ions than the surface, but phosphate nodules form in shallow water 7. The silica compensation depth is 8000 meters and below that depth, silica begins to dissolve. 8. All sand is made of quartz (silica). 9. The ridge crest contains little sediment because it is shallow and swept clean by ocean currents. 10. To be ooze, the fine-grained sediment must be almost all microscopic biogenic material. 11. Sediments deposited by melting icebergs tend to be well-sorted because large grains sink fastest. 1