Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Liebetrau, Volker; Krause, Stefan (2014): U-Th isotope systematics and light stable isotope data of carbonate enriched sediments at MASOX and HyBIS sites (methane seepage off Svalbard) from JAGO dives during cruise Maria S. Merian MSM21/4. PANGAEA, https://doi.org/10.1594/PANGAEA.825734, In supplement to: Berndt, Christian; Feseker, Tomas; Treude, Tina; Krastel, Sebastian; Liebetrau, Volker; Niemann, Helge; Bertics, Victoria J; Dumke, Ines; Dünnbier, Karolin; Ferre, Benedicte; Graves, Carolyn; Gross, Felix; Hissmann, Karen; Hühnerbach, Veit; Krause, Stefan; Lieser, Kathrin; Schauer, Jürgen; Steinle, Lea (2014): Temporal constraints on hydrate-controlled methane seepage off Svalbard. Published Online January 2 2014, Science, https://doi.org/10.1126/science.1246298

Always quote above citation when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Coverage:
Median Latitude: 78.584373 * Median Longitude: 9.447790 * South-bound Latitude: 78.555830 * West-bound Longitude: 9.420830 * North-bound Latitude: 78.612830 * East-bound Longitude: 9.473500
Date/Time Start: 2012-08-23T18:41:00 * Date/Time End: 2012-08-25T13:15:59
Minimum DEPTH, sediment/rock: 0.05 m * Maximum DEPTH, sediment/rock: 0.05 m
Event(s):
MSM21/4_579-1 * Latitude Start: 78.555830 * Longitude Start: 9.473500 * Latitude End: 78.557000 * Longitude End: 9.471000 * Date/Time Start: 2012-08-23T18:41:00 * Date/Time End: 2012-08-23T22:02:59 * Location: North Greenland Sea * Campaign: MSM21/4 * Basis: Maria S. Merian * Device: Submersible JAGO (JAGO)
MSM21/4_597-1 * Latitude Start: 78.611830 * Longitude Start: 9.425830 * Latitude End: 78.612830 * Longitude End: 9.420830 * Date/Time Start: 2012-08-25T08:13:00 * Date/Time End: 2012-08-25T13:15:59 * Elevation Start: -380.5 m * Elevation End: -396.5 m * Location: North Greenland Sea * Campaign: MSM21/4 * Basis: Maria S. Merian * Device: Submersible JAGO (JAGO)
Comment:
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.
HyBIS U-measurements were performed on Quadrupole Inductively Coupled Plasma Mass Spectrometer (Q-ICP-MS) on limited precision 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.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4DEPTH, sediment/rockDepthmGeocode
5Depth, top/minDepth topmKrause, Stefan
6Depth, bottom/maxDepth botmKrause, Stefan
7Sample code/labelSample labelKrause, Stefanleachate mode in brackets
8LocationLocationKrause, Stefan
9DescriptionDescriptionKrause, Stefan
10Sample massSamp mmgLiebetrau, Volkers. note 1
11non-silicates, totalnon silic tot%Liebetrau, Volkers. note 2
12Age, datedAge datedkaLiebetrau, VolkerMC-ICP-MS, isotope dilution
13Age, errorAge e±Liebetrau, VolkerMC-ICP-MS, isotope dilution
14Uranium 238238Umg/kgLiebetrau, VolkerMC-ICP-MS, isotope dilution
15Error, absoluteError a±Liebetrau, VolkerMC-ICP-MS, isotope dilution
16Thorium 232232Thmg/kgLiebetrau, VolkerMC-ICP-MS, isotope dilution
17Error, absoluteError a±Liebetrau, VolkerMC-ICP-MS, isotope dilution
18Uranium 234/Uranium 238 activity ratio(234U/238U)Liebetrau, VolkerMC-ICP-MS, isotope dilutiondelta234U(o) (meas. 234U/238U act. ratio -1) * 1000 at time 0 (today)
19Uranium 234/Uranium 238 activity ratio, error, absolute(234U/238U) e±Liebetrau, VolkerMC-ICP-MS, isotope dilution
20Thorium 230/Thorium 232 activity ratio(230Th/232Th)Liebetrau, VolkerMC-ICP-MS, isotope dilution
21Error, absoluteError a±Liebetrau, VolkerMC-ICP-MS, isotope dilution
22Uranium 238/Thorium 232 activity ratio(238U/232Th)Liebetrau, VolkerMC-ICP-MS, isotope dilution
23Error, absoluteError a±Liebetrau, VolkerMC-ICP-MS, isotope dilution
24Thorium 230/Uranium 234 activity ratio(230Th/234U)Liebetrau, VolkerMC-ICP-MS, isotope dilution230Th/234U activity ratio corrected for inherited 230Th by application of 230Th/232Th activity ratio of 0.75 ± 0.2 as continental crust average value (according to Wedepohl, 1995)
25Error, absoluteError a±Liebetrau, VolkerMC-ICP-MS, isotope dilution
26Uranium 234/Uranium 238 activity ratio(234U/238U)Liebetrau, VolkerCalculateddelta234U(t)(234U/238U act. ratio at zero age -1) * 1000 at time (t = U/Th-age)
Measured 234U/238U back-calculated for 234U decay since carbonate precipitation, based on the individual U/Th ingrowth age and half-lives measured by Cheng et al. (2000).
27Uranium 234/Uranium 238 activity ratio, error, absolute(234U/238U) e±Liebetrau, VolkerCalculated
28δ13C, carbonateδ13C carb‰ PDBLiebetrau, VolkerMass spectrometer Finnigan MAT 253with respect to VPDB
29Error, absoluteError a±Liebetrau, VolkerMass spectrometer Finnigan MAT 253
30δ18O, carbonateδ18O carb‰ PDBLiebetrau, VolkerMass spectrometer Finnigan MAT 253with respect to VPDB
31Error, absoluteError a±Liebetrau, VolkerMass spectrometer Finnigan MAT 253
32CarbonateCarbKrause, StefanX-ray diffractometry (Philips PW1710)
33Sample code/labelSample labelLiebetrau, VolkerFor sub-samples postulated of cogenetic origin by petrographic observations the isoplot 3.75 software of the Berkeley Geochronology Center, CA, USA is applyied for isochron age estimates.
34Uranium 234/Uranium 238 activity ratio(234U/238U)Liebetrau, VolkerCalculateddelta234U(t)(234U/238U act. ratio at zero age -1) * 1000 at time (t = U/Th-age)
Measured 234U/238U back-calculated for 234U decay since carbonate precipitation, based on the individual U/Th ingrowth age and half-lives measured by Cheng et al. (2000).
delta234U(t) of Rosholt-1 isochron approaches based on isoplot 3.75 calculation.
35Uranium 234/Uranium 238 activity ratio, error, absolute(234U/238U) e±Liebetrau, VolkerCalculated
36Age modelAge modelkaLiebetrau, VolkerAge estimates applying the Rosholt-1 isochron approach in 3 dimensional projection according data reduction system after Ludwig (2008).
37Age, errorAge e±Liebetrau, Volker
38Age modelAge modelkaLiebetrau, VolkerAge estimates applying the Osmond isochron approach according data reduction system after Ludwig (2008).
39Age, errorAge e±Liebetrau, Volker
Size:
119 data points

Download Data

Download dataset as tab-delimited text (use the following character encoding: )

View dataset as HTML