PANGAEA_776205 (Table T1) Stable carbon isotopic composition of n-alkanes and carbon preference index of ODP Hole 208-1263A Hasegawa, Takashi; Yamamoto, Shinya; Pratt, Lisa M (Table T1) Stable carbon isotopic composition of n-alkanes and carbon preference index of ODP Hole 208-1263A 2006 PANGAEA Dataset 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 https://doi.pangaea.de/10.1594/PANGAEA.776205 Investigator Takashi Hasegawa jh7ujr@staff.kanazawa-u.ac.jp Earth Science Sample code/label DEPTH, sediment/rock n-Alkane C29, δ13C n-Alkane C31, δ13C n-Alkane C33, δ13C Carbon Preference Index, n-Alkanes geoscientificInformation 208-1263A Drilling/drill rig Leg208 DSDP/ODP/IODP sample designation Mass spectrometer, Finnigan, MAT 252 Joides Resolution 2003-03-29 2003-04-02 Complete -28.53283 -28.53283 2.77948 2.77948 334.45 m (DEPTH, sediment/rock) 378.21 m (DEPTH, sediment/rock) ODP Ocean Drilling Program unrestricted CC-BY-3.0: Creative Commons Attribution 3.0 Unported English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 52 data points text/tab-separated-values

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. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.776205"! ** Sediment depth is given in mcd, at top horizon of the sample. Each isotope value represents the average of duplicate analyses.

https://doi.org/10.2973/odp.proc.sr.208.202.2006 Data report: Stable carbon isotope fluctuation of long-chain n-alkanes from Leg 208 Hole 1263A across the Paleocene/Eocene boundary https://hdl.handle.net/10013/epic.27914.d001 DSDP/ODP/IODP sample designation https://www-odp.tamu.edu:443/ ODP https://www-odp.tamu.edu:443/resolutn.html Joides Resolution DIF 9.4 2026-05-01