Uranium in the contemporaneous sedimentary cycle of the sea (in Russian)
During rocks weathering and in the river run-off, uranium is divided into the dissolved and the suspended one at an average 1: 1 ratio. The average uranium content in the sum of dissolved and suspended matters of river run-off corresponds to its average content in the Earth crust; that determines uranium content in sea and ocean sediments. The share of hydrogenous uranium being concentrated in sediments of sea basins and the peripheric zones of the ocean up to (10 to 60) x 10-4% plays in the total balance a secondary role. This concentration is favored by the enrichment of sediments in organic matter and phosphorus, by the heightened uranium content in waters, by the reducing conditions near the boundary of water--bottom divide, by the slackened sedimentation rate, by the renewal of the near-bortom waters. Uranium transition from the solid phase to interstitial waters, where its concentration reaches n x 10/sup -4/g/l, is a precondition of its redistribution during diagenesis. (auth)
- Research Organization:
- Inst. of Oceanology, Moscow
- NSA Number:
- NSA-29-010140
- OSTI ID:
- 4395263
- Journal Information:
- Geokhimiya, no. 9, pp. 1362-1372, Journal Name: Geokhimiya, no. 9, pp. 1362-1372; ISSN GEOKA
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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