U-Th isotope systematics and light stable isotope data of carbonate enriched sediments at MASOX site (methane seepage off Svalbard) at sediment core MSM21/4_657-1

• Main Authors: Liebetrau, Volker, Krause, Stefan
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2014
• Subjects: DEPTH, sediment/rock; Depth, top/min; Depth, bottom/max; Sample code/label; Location; Description; Sample mass; non-silicates, total; Age, dated; Age, error; Uranium-238; Error, absolute; Thorium-232; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, error, absolute; Thorium-230/Thorium-232 activity ratio; Uranium-238/Thorium-232 activity ratio; Thorium-230/Uranium-234 activity ratio; δ13C, carbonate; δ18O, carbonate; Carbonates; Age model; Gravity corer; MC-ICP-MS, isotope dilution; Calculated; Mass spectrometer Finnigan MAT 253; X-ray diffractometry Philips PW1710; MSM21/4; Maria S. Merian; Svalbard
• Online Access: https://dx.doi.org/10.1594/pangaea.826110; https://doi.pangaea.de/10.1594/PANGAEA.826110

Values with # mark highly unreliable ages characterized by uncertainties larger than the deduced age or even dominated by 230Th correction values as well as isochron approaches based just on 2-point reference lines. Therefore, the latter may not provide any proof for the petrographic postulation of cogenetic origin.Uncertainties presented on 2 sigma level.Note 1: The sample weight represents the analysed amount dissolved in 4 N Acetic Acid and 2.25 N HNO3 (marked by -2), respectively, at room temperature over 2 hours. Remaining material was 2 x centrifuged, dried down and weighed for recalculation of the dissolved sample weight.Note 2: The equivalent percentage of the analysed non-silicate fraction represented by the sample weight. X-ray diffraction analyses indicated aragonite as the main non-silicate and easily dissolvable phase.