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 Bulk composition of marine sediment cores MDBT 557 and MDBT 561 from the southern Brazilian continental shelf dataset https://doi.org/10.1594/PANGAEA.992684 2026-03-09T06:55:31 This dataset contains grain-size distribution, total organic carbon (TOC), and bulk stable carbon isotope (δ¹³C-bulk) measurements from the Holocene marine sediment core MDBT 557 and MDBT 561, collected on the southern Brazilian continental shelf. Grain-size analyses were performed using laser diffraction after removal of carbonates and organic matter. TOC and δ¹³C-bulk were determined by elemental analysis–isotope ratio mass spectrometry (EA-IRMS) following acidification to remove inorganic carbon. The data provide information on sedimentological variability and bulk organic matter composition through the Holocene and are intended to support investigations of sediment dynamics, organic carbon burial, and paleoenvironmental changes on the southwestern Atlantic shelf. 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 -90.0 2019-06-02T12:20:00 Brazilian southeastern continental shelf Gravity corer GC MDBT_561 -33.27 -51.3 -80.0 2019-06-02T13:22:00 Brazilian southeastern continental shelf Gravity corer GC 1110 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Event label Event Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 Event Latitude of event Latitude Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 Latitude Longitude of event Longitude Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 Longitude Date/Time of event Date/Time Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 Date/Time Elevation of event Elevation m Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 Elevation [m] 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] Sedimentation rate per year SR cm/a sedimentation rate year Linear Velocity http://dbpedia.org/resource/Velocity Laser diffraction particle size analyzer, Malvern Instruments, Mastersizer 2000 Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 SR [cm/a] Size fraction 0.063-0.002 mm, silt, mud 63-2 µm % size http://purl.obolibrary.org/obo/PATO_0000117 Fraction silt http://purl.obolibrary.org/obo/ENVO_01000016 mud http://purl.obolibrary.org/obo/ENVO_01000001 Dimensionless Ratio ψ Laser diffraction particle size analyzer, Malvern Instruments, Mastersizer 2000 Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 63-2 µm [%] Carbon, organic, total TOC % carbon C https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:27594 organic total https://www.oxforddictionaries.com/definition/american_english/total Dimensionless Ratio ψ Elemental analyzer, Costech Instruments, ECS 4010 coupled to IRMS Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 TOC [%] δ13C δ13C ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Isotope Ratio Mass Spectrometer, Thermo Scientific, Delta V Advantage coupled to Costech ECS 4010 Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 vs. VPDB δ13C [‰ PDB] Median, grain size D50 µm size http://purl.obolibrary.org/obo/PATO_0000117 Length L http://dbpedia.org/resource/Length Laser diffraction particle size analyzer, Malvern Instruments, Mastersizer 2000 Santos Felipe Rodrigues feliperod@usp.br 0000-0001-8756-5036 D50 [µm] 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 method10484 method11107 method18840 method18841 method502 param17863 param18602 param5349 param67 param8552 pi86211 ref138086 term1073089 term1073135 term1073204 term1073206 term1073537 term2299480 term38253 term38477 term41076 term43398 term43794 term43863 term43876 term43975 term44034 term44419 term53509 term68027 term688 term69901 term71533 term75919 topotype3