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| Main Authors: | , , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2026
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.992687 |
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| _version_ | 1867171057625989120 |
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| author | Santos, Felipe Rodrigues Lourenço, Rafael André Taniguchi, Satie Martins, César de Castro Wainer, Ilana E K C Mahiques, Michel Michaelovitch Nagai, Renata Hanae Figueira, Rubens César Lopes Bouloubassi, Ioanna D Bicego, Marcia C |
| author_facet | Santos, Felipe Rodrigues Lourenço, Rafael André Taniguchi, Satie Martins, César de Castro Wainer, Ilana E K C Mahiques, Michel Michaelovitch Nagai, Renata Hanae Figueira, Rubens César Lopes Bouloubassi, Ioanna D Bicego, Marcia C |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This dataset presents concentrations of long-chain n-alkanes (nC25–nC33) and derived molecular indices, including Carbon Preference Index (CPI), Average Chain Length (ACL), and Paq, from Holocene marine sediment cores MDBT 557 and MDBT 561, recovered from the southern Brazilian continental shelf. Lipid biomarkers were extracted using organic solvents, purified by column chromatography, and quantified by gas chromatography with flame ionization detection (GC-FID), with surrogate standards used to assess analytical recovery. These data characterize variations in terrigenous organic matter input, vegetation-related signals, and hydrological conditions affecting the continental margin during the Holocene. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_992687 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | n-Alkane concentrations and molecular indices (CPI, ACL, Paq) from Holocene marine sediment cores MDBT 557 and MDBT 561 (southern Brazilian shelf) Santos, Felipe Rodrigues Lourenço, Rafael André Taniguchi, Satie Martins, César de Castro Wainer, Ilana E K C Mahiques, Michel Michaelovitch Nagai, Renata Hanae Figueira, Rubens César Lopes Bouloubassi, Ioanna D Bicego, Marcia C AGE; Age, 14C calibrated; alkanes; Aquatic n-alkane proxy; Average chain length, n-Alkanes, C27-C33; Brazilian southeastern continental shelf; Calculated; Calculated according to Bray and Evans (1961); Calculated according to Poynter (1989); Carbon Preference Index; Date/Time of event; Elevation of event; Event label; Gas chromatography - Flame Ionization Detection (GC-FID), Agilent Technologies, HP7890B; GC; Gravity corer; La Plata River; Latitude of event; Longitude of event; MDBT_557; MDBT_561; n-Alkanes, average chain length; n-Alkanes, sum, per unit sediment mass; southern Brazilian margin; summarized; Sum n-alkanes C25-C33; vegetation changes This dataset presents concentrations of long-chain n-alkanes (nC25–nC33) and derived molecular indices, including Carbon Preference Index (CPI), Average Chain Length (ACL), and Paq, from Holocene marine sediment cores MDBT 557 and MDBT 561, recovered from the southern Brazilian continental shelf. Lipid biomarkers were extracted using organic solvents, purified by column chromatography, and quantified by gas chromatography with flame ionization detection (GC-FID), with surrogate standards used to assess analytical recovery. These data characterize variations in terrigenous organic matter input, vegetation-related signals, and hydrological conditions affecting the continental margin during the Holocene. |
| title | n-Alkane concentrations and molecular indices (CPI, ACL, Paq) from Holocene marine sediment cores MDBT 557 and MDBT 561 (southern Brazilian shelf) |
| topic | AGE; Age, 14C calibrated; alkanes; Aquatic n-alkane proxy; Average chain length, n-Alkanes, C27-C33; Brazilian southeastern continental shelf; Calculated; Calculated according to Bray and Evans (1961); Calculated according to Poynter (1989); Carbon Preference Index; Date/Time of event; Elevation of event; Event label; Gas chromatography - Flame Ionization Detection (GC-FID), Agilent Technologies, HP7890B; GC; Gravity corer; La Plata River; Latitude of event; Longitude of event; MDBT_557; MDBT_561; n-Alkanes, average chain length; n-Alkanes, sum, per unit sediment mass; southern Brazilian margin; summarized; Sum n-alkanes C25-C33; vegetation changes |
| url | https://doi.org/10.1594/PANGAEA.992687 |