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| Autori principali: | , , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
| Pubblicazione: |
PANGAEA
2001
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| Accesso online: | https://doi.org/10.1594/PANGAEA.198765 |
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| _version_ | 1867171454215258112 |
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| author | Marlow, J R Farrimond, Paul Rosell-Melé, Antoni |
| author_facet | Marlow, J R Farrimond, Paul Rosell-Melé, Antoni |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The major biomarker compounds in surface (0.95 meters below seafloor [mbsf]) and deep (579.92 mbsf) sediment samples from the Benguela Current coastal upwelling system off Lüderitz, Namibia (Leg 175 Hole 1084A), have been identified and quantified. Lipids of marine origin (especially long-chain alkenones) dominate the solvent-soluble extracts of both samples with minor constituents of terrestrially derived lipids. The paleoenvironmental significance of the more labile biomarker distributions (sterols) is limited by losses from depth-related diagenetic transformations. These losses may have led to the relative enrichment of the more refractory biomarkers (alkenones) with depth. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_198765 |
| institution | PANGAEA |
| language | en |
| publishDate | 2001 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Sample identification and bulk properties, Hole 175-1084A Marlow, J R Farrimond, Paul Rosell-Melé, Antoni 175-1084A; Accumulation rate, calcium carbonate; Accumulation rate, total organic carbon; AGE; Benguela Current, South Atlantic Ocean; Calcium carbonate; Calculated, see reference(s); Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Element analyser CHN, LECO; Joides Resolution; Leg175; Lithologic unit/sequence; Ocean Drilling Program; ODP; Sample code/label; Sedimentation rate; Sulfur, total The major biomarker compounds in surface (0.95 meters below seafloor [mbsf]) and deep (579.92 mbsf) sediment samples from the Benguela Current coastal upwelling system off Lüderitz, Namibia (Leg 175 Hole 1084A), have been identified and quantified. Lipids of marine origin (especially long-chain alkenones) dominate the solvent-soluble extracts of both samples with minor constituents of terrestrially derived lipids. The paleoenvironmental significance of the more labile biomarker distributions (sterols) is limited by losses from depth-related diagenetic transformations. These losses may have led to the relative enrichment of the more refractory biomarkers (alkenones) with depth. |
| title | (Table 1) Sample identification and bulk properties, Hole 175-1084A |
| topic | 175-1084A; Accumulation rate, calcium carbonate; Accumulation rate, total organic carbon; AGE; Benguela Current, South Atlantic Ocean; Calcium carbonate; Calculated, see reference(s); Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Element analyser CHN, LECO; Joides Resolution; Leg175; Lithologic unit/sequence; Ocean Drilling Program; ODP; Sample code/label; Sedimentation rate; Sulfur, total |
| url | https://doi.org/10.1594/PANGAEA.198765 |