de.pangaea.dataset776205 und dataset PANGAEA

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https://www.pangaea.de/ information pointOfContact 2026-05-01T03:28:07Z https://doi.pangaea.de/10.1594/PANGAEA.776205 2006-01-01 publication https://doi.org/10.1594/PANGAEA.776205 Hasegawa, Takashi

jh7ujr@staff.kanazawa-u.ac.jp

https://orcid.org/0000-0003-0147-506X information author Yamamoto, Shinya

s.yamamoto@mfri.pref.yamanashi.jp

https://orcid.org/0000-0001-7938-1106 information author Pratt, Lisa M author PANGAEA

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https://www.pangaea.de/ information publisher tableDigital Supplement to: Hasegawa, Takashi; Yamamoto, Shinya; Pratt, Lisa M (2006): Data report: Stable carbon isotope fluctuation of long-chain n-alkanes from Leg 208 Hole 1263A across the Paleocene/Eocene boundary. In: Kroon, D; Zachos, JC; Richter, C (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 208, 1-11, https://doi.org/10.2973/odp.proc.sr.208.202.2006 Carbon isotope ratios of terrestrial biomarkers extracted from Ocean Drilling Program Hole 1263A show a prominent negative excursion across the Paleocene/Eocene boundary. The isotope profiles of the normal alkanes nonacosane (n-C29), hentriacontane (n-C31), and tritriacontane (n-C33), the first such profiles generated with samples from a pelagic section, are similar to those of carbonate carbon, though the magnitude of the excursion is larger, roughly 4-5. In addition, the n-alkane records show an inflection at 334.70 meters composite depth, which is roughly equivalent to where the inflection occurs in the carbonate record. These results suggest that the terrestrial compounds are directly recording changes in atmospheric carbon 13C and that the actual excursion may have been larger than that recorded by marine carbonates. completed Hasegawa, Takashi

jh7ujr@staff.kanazawa-u.ac.jp

https://orcid.org/0000-0003-0147-506X information principalInvestigator ODP Ocean Drilling Program theme 1995-01-01 creation PANGAEA

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https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-3.0: Creative Commons Attribution 3.0 Unported textTable und geoscientificInformation 2.77948 2.77948 -28.53283 -28.53283 2003-03-29T15:15:00 2003-04-02T01:25:00 334.45 378.21 Sediment depth is given in mcd, at top horizon of the sample. Each isotope value represents the average of duplicate analyses. Sample code/label thematicClassification DSDP/ODP/IODP sample designation DEPTH, sediment/rock physicalMeasurement m m n-Alkane C29, δ13C physicalMeasurement Mass spectrometer, Finnigan, MAT 252 ‰ PDB ‰ PDB n-Alkane C31, δ13C physicalMeasurement Mass spectrometer, Finnigan, MAT 252 ‰ PDB ‰ PDB n-Alkane C33, δ13C physicalMeasurement Mass spectrometer, Finnigan, MAT 252 ‰ PDB ‰ PDB Carbon Preference Index, n-Alkanes thematicClassification CPI(29-33) = 0.5 x ((C29+C31+C33)/(C28+C30+C32) + (C29+C31+C33)/(C30+C32+C34)) text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.776205?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: 208-1263A * LATITUDE: -28.532830 * LONGITUDE: 2.779480 * DATE/TIME START: 2003-03-29T15:15:00 * DATE/TIME END: 2003-04-02T01:25:00 * ELEVATION: -2717.1 m * PENETRATION: 345.6 m * RECOVERY: 295.78 m * LOCATION: Walvis Ridge, Southeast Atlantic Ocean * CAMPAIGN: Leg208 * BASIS: Joides Resolution * METHOD/DEVICE: Drilling/drill rig 40 cores; 345.6 m cored; 0 m drilled; 85.6 % recovery 2003-03-29T15:15:00