Contents of P2O5, Corg, Sr, and Ba in phosphorites and host sediments from the Atlantic and Pacific oceans
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
1979
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| _version_ | 1867170459187937280 |
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| author | Tambiev, Sergey B |
| author_facet | Tambiev, Sergey B |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Sr contents in phosphorites on shelves of the Southwest Africa, and of Chile and Peru increase with degree of their lithification, from 0.05 to 0.28% and from 0.13 to 0.16% respectively. Phosphorites from Pacific submarine seamounts have the average Sr content 0.11%, and bone phosphate from Pacific floor 0.13%. Shelf phosphorites are characterized by high correlation coefficients between Sr and P2O5 (R = +0.82) and constant Sr/P2O5 ratio (0.0084). In phosphorites from submarine sea-mounts and in bones from the ocean floor Sr/P2O5 ratio is only a little higher than a half of that in shelf phosphorites. This indicates specific and different genesis of phosphorites from submarine mountains. Ba content in recent phosphorites from the shelf of the Southwest Africa changes with increasing degree of lithification. At first their Ba contents rise from 0.031 to 0.188%, then they diminish to 0.016%, and thereafter again increase to 0.070%. This is due to successive predominance of one of the following processes going in different directions: co-precipitation with phosphate gels or formation of true separate Ba phase, loss of phosphate in crystallization and "self-purification" of concentrations, and surface adsorption. In Peru-Chile shelf phosphorites the average Ba content is 0.017%, in phosphorites from Pacific seamounts 0.192%, and in fossilized bones 0.010%. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_755309 |
| institution | PANGAEA |
| language | en |
| publishDate | 1979 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Contents of P2O5, Corg, Sr, and Ba in phosphorites and host sediments from the Atlantic and Pacific oceans Tambiev, Sergey B AK4-250; Akademik Kurchatov; AKU4; Archive of Ocean Data; ARCOD; Atlantic Ocean; Central Pacific; Chile shelf; DM8; DM8-546; DM8-553; Dmitry Mendeleev; Dredge; DRG; Grab; GRAB; Manihiki Plateau, Pacific Ocean; Marcus-Necker Ridge; Mikhail Lomonosov; ML26; ML26_2046; ML26_2047; ML26_2048; Pacific Ocean; Peru shelf; TAM-160; TRAWL; Trawl net; VITYAZ; Vityaz (ex-Mars); Vityaz-48; VITYAZ6261-1; VITYAZ6265; VITYAZ6266-DR; VITYAZ6333-13-TR; VITYAZ6343-DR; VITYAZ6348-1; VITYAZ6349; VITYAZ6352-DR; VITYAZ6364-DR; VITYAZ6366-DR; VITYAZ6367-DR; VITYAZ6368-DR Sr contents in phosphorites on shelves of the Southwest Africa, and of Chile and Peru increase with degree of their lithification, from 0.05 to 0.28% and from 0.13 to 0.16% respectively. Phosphorites from Pacific submarine seamounts have the average Sr content 0.11%, and bone phosphate from Pacific floor 0.13%. Shelf phosphorites are characterized by high correlation coefficients between Sr and P2O5 (R = +0.82) and constant Sr/P2O5 ratio (0.0084). In phosphorites from submarine sea-mounts and in bones from the ocean floor Sr/P2O5 ratio is only a little higher than a half of that in shelf phosphorites. This indicates specific and different genesis of phosphorites from submarine mountains. Ba content in recent phosphorites from the shelf of the Southwest Africa changes with increasing degree of lithification. At first their Ba contents rise from 0.031 to 0.188%, then they diminish to 0.016%, and thereafter again increase to 0.070%. This is due to successive predominance of one of the following processes going in different directions: co-precipitation with phosphate gels or formation of true separate Ba phase, loss of phosphate in crystallization and "self-purification" of concentrations, and surface adsorption. In Peru-Chile shelf phosphorites the average Ba content is 0.017%, in phosphorites from Pacific seamounts 0.192%, and in fossilized bones 0.010%. |
| title | Contents of P2O5, Corg, Sr, and Ba in phosphorites and host sediments from the Atlantic and Pacific oceans |
| topic | AK4-250; Akademik Kurchatov; AKU4; Archive of Ocean Data; ARCOD; Atlantic Ocean; Central Pacific; Chile shelf; DM8; DM8-546; DM8-553; Dmitry Mendeleev; Dredge; DRG; Grab; GRAB; Manihiki Plateau, Pacific Ocean; Marcus-Necker Ridge; Mikhail Lomonosov; ML26; ML26_2046; ML26_2047; ML26_2048; Pacific Ocean; Peru shelf; TAM-160; TRAWL; Trawl net; VITYAZ; Vityaz (ex-Mars); Vityaz-48; VITYAZ6261-1; VITYAZ6265; VITYAZ6266-DR; VITYAZ6333-13-TR; VITYAZ6343-DR; VITYAZ6348-1; VITYAZ6349; VITYAZ6352-DR; VITYAZ6364-DR; VITYAZ6366-DR; VITYAZ6367-DR; VITYAZ6368-DR |
| url | https://doi.org/10.1594/PANGAEA.755309 |