n-Alkane concentrations and molecular indices (CPI, ACL, Paq) from Holocene marine sediment cores MDBT 557 and MDBT 561 (southern Brazilian shelf)

DOI

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.

Identifier
DOI https://doi.org/10.1594/PANGAEA.992687
Related Identifier References https://doi.org/10.1214/11-BA618
Related Identifier References https://doi.org/10.1016/0016-7037(61)90069-2
Related Identifier References https://doi.org/10.1017/RDC.2020.68
Related Identifier References https://doi.org/10.1007/978-94-009-0995-3_18
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.992687
Provenance
Creator Santos, Felipe Rodrigues ORCID logo; Lourenço, Rafael André; Taniguchi, Satie; Martins, César de Castro; Wainer, Ilana E K C (ORCID: 0000-0003-3784-623X); Mahiques, Michel Michaelovitch ORCID logo; Nagai, Renata Hanae ORCID logo; Figueira, Rubens César Lopes ORCID logo; Bouloubassi, Ioanna D; Bicego, Marcia C
Publisher PANGAEA
Publication Year 2026
Funding Reference São Paulo Research Foundation https://doi.org/10.13039/501100001807 Crossref Funder ID 17/20344-7 https://bv.fapesp.br/pt/bolsas/174327/mudbelts-do-sul-e-sudeste-do-brasil-implicacoes-sobre-as-influencias-antropicas-no-ambiente-marinho/ Mudbelts of Southern and Southeast Brazil: Implications on anthropogenic influences on the marine environment
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 1296 data points
Discipline Earth System Research
Spatial Coverage (-52.210W, -33.790S, -51.300E, -33.270N); Brazilian southeastern continental shelf
Temporal Coverage Begin 2019-06-02T12:20:00Z
Temporal Coverage End 2019-06-02T13:22:00Z