Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 Lourenço Rafael André rafaell@usp.br Taniguchi Satie Martins César de Castro ccmart@usp.br Wainer Ilana E K C wainer@usp.br 0000-0003-3784-623X Mahiques Michel Michaelovitch mahiques@usp.br 0000-0002-5249-5610 Nagai Renata Hanae renatanagai@gmail.com 0000-0002-1358-5074 Figueira Rubens César Lopes rfigueira@usp.br 0000-0001-8945-4540 Bouloubassi Ioanna D ioanna.bouloubassi@locean.ipsl.fr Bicego Marcia C marciabicego@usp.br 2026 Compound-specific δ¹³C values of long-chain n-alkanes from Holocene marine sediment core MDBT 561 (southern Brazilian shelf) dataset https://doi.org/10.1594/PANGAEA.992685 2026-03-09T06:55:31 This dataset includes compound-specific stable carbon isotope (δ¹³C) values of long-chain n-alkanes (nC27–nC33) from the Holocene marine sediment core MDBT 561, collected on the southern Brazilian continental shelf. Individual n-alkanes were analyzed using gas chromatography–combustion–isotope ratio mass spectrometry (GC-C-IRMS). The compound-specific isotope data provide information on the sources and isotopic composition of terrigenous organic matter delivered to the shelf, supporting reconstructions of vegetation dynamics and continental hydrological variability during the Holocene. Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 Lourenço Rafael André rafaell@usp.br Taniguchi Satie Martins César de Castro ccmart@usp.br Wainer Ilana E K C wainer@usp.br 0000-0003-3784-623X Mahiques Michel Michaelovitch mahiques@usp.br 0000-0002-5249-5610 Nagai Renata Hanae renatanagai@gmail.com 0000-0002-1358-5074 Figueira Rubens César Lopes rfigueira@usp.br 0000-0001-8945-4540 Bouloubassi Ioanna D ioanna.bouloubassi@locean.ipsl.fr Bicego Marcia C marciabicego@usp.br in review Holocene composition, origin, and evolution of terrigenous organic matter in the southwestern Atlantic Ocean: Insights about vegetation, climate and oceanographic variations Paleoceanography and Paleoclimatology -52.21 -51.3 -33.79 -33.27 -51.754999999999995 -33.53 2019-06-02T12:20:00 2019-06-02T13:22:00 -90.0 -80.0 vertical profile São Paulo Research Foundation FAPESP https://fapesp.br/ https://doi.org/10.13039/501100001807 17/20344-7 Mudbelts of Southern and Southeast Brazil: Implications on anthropogenic influences on the marine environment https://bv.fapesp.br/pt/bolsas/174327/mudbelts-do-sul-e-sudeste-do-brasil-implicacoes-sobre-as-influencias-antropicas-no-ambiente-marinho/ MDBT_557 -33.79 -52.21 Brazilian southeastern continental shelf -90.0 2019-06-02T12:20:00 Gravity corer GC MDBT_561 -33.27 -51.3 Brazilian southeastern continental shelf -80.0 2019-06-02T13:22:00 Gravity corer GC 159 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ AGE Age ka BP http://en.wikipedia.org/wiki/Kyr age http://purl.obolibrary.org/obo/PATO_0000011 Time T http://dbpedia.org/resource/Time Accelerator mass spectrometry (AMS) Chromatographs & spectrometers gas chromatograph mass spectrometers http://vocab.nerc.ac.uk/collection/L05/current/LAB19/ Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 Age [ka BP] n-Alkane C27, δ13C C27 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gas chromatograph–combustion–isotope ratio mass spectrometer (GC-C-IRMS), Thermo Scientific, Trace GC Ultra coupled to Delta V Advantage Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 vs. VPDB C27 δ13C [‰ PDB] n-Alkane C29, δ13C C29 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gas chromatograph–combustion–isotope ratio mass spectrometer (GC-C-IRMS), Thermo Scientific, Trace GC Ultra coupled to Delta V Advantage Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 vs. VPDB C29 δ13C [‰ PDB] n-Alkane C31, δ13C C31 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gas chromatograph–combustion–isotope ratio mass spectrometer (GC-C-IRMS), Thermo Scientific, Trace GC Ultra coupled to Delta V Advantage Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 vs. VPDB C31 δ13C [‰ PDB] n-Alkane C33, δ13C C33 δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Gas chromatograph–combustion–isotope ratio mass spectrometer (GC-C-IRMS), Thermo Scientific, Trace GC Ultra coupled to Delta V Advantage Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 vs. VPDB C33 δ13C [‰ PDB] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable alkanes La Plata River southern Brazilian margin vegetation changes author114913 author114914 author114915 author47053 author69337 author69338 author83356 author86210 author86211 author86214 award4843 curlevel30 event3358250 event3358251 funder20820 geocode1599 geocode1600 geocode1601 geocode2205 geocode8128 journal16885 license21 method11107 method18844 method502 param27734 param27736 param27738 param27740 pi86211 ref138086 term1073089 term1073135 term2299480 term43975 term53509 term68027 term688 term69901 term71533 term75919 topotype3