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

Pagani, Mark; Pedentchouk, Nikolai; Huber, Matthew; Sluijs, Appy; Schouten, Stefan; Brinkhuis, Henk; Sinninghe Damsté, Jaap S; Dickens, Gerald Roy; Expedition 302 Scientists (2006): Stable carbon isotope ratios of alkane of IODP Hole 302-M0004A. PANGAEA, https://doi.org/10.1594/PANGAEA.733130, Supplement to: Pagani, M et al. (2006): Arctic hydrology during global warming at the Palaeocene/Eocene thermal maximum. Nature, 442(10), 671-675, https://doi.org/10.1038/nature05043

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

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
The Palaeocene/Eocene thermal maximum represents a period of rapid, extreme global warming approx ~55 million years ago, superimposed on an already warm world (Zachos et al., 2003, doi:10.1126/science.1090110; Bowen et al., 2004, doi:10.1038/nature03115; Thomas et al., 2002, doi:10.1130/0091-7613(2002)030<1067:WTFFTF>2.0.CO;2). This warming is associated with a severe shoaling of the ocean calcite compensation depth **4 and a >2.5 per mil negative carbon isotope excursion in marine and soil carbonates (Zachos et al., 2003, doi:10.1126/science.1090110; Bowen et al., 2004, doi:10.1038/nature03115; Thomas et al., 2002, doi:10.1130/0091-7613(2002)030<1067:WTFFTF>2.0.CO;2; Zachos et al., doi:10.1126/science.1109004). Together these observations indicate a massive release of 13C-depleted carbon (Zachos et al., doi:10.1126/science.1109004) and greenhouse-gas-induced warming. Recently, sediments were recovered from the central Arctic Ocean (Backman et al., 2006, doi:10.2204/iodp.proc.302.2006), providing the first opportunity to evaluate the environmental response at the North Pole at this time. Here we present stable hydrogen and carbon isotope measurements of terrestrial-plant- and aquatic-derived n-alkanes that record changes in hydrology, including surface water salinity and precipitation, and the global carbon cycle. Hydrogen isotope records are interpreted as documenting decreased rainout during moisture transport from lower latitudes and increased moisture delivery to the Arctic at the onset of the Palaeocene/Eocene thermal maximum, consistent with predictions of poleward storm track migrations during global warming (Backman et al., 2006, doi:10.2204/iodp.proc.302.2006). The terrestrial-plant carbon isotope excursion (about ~4.5 to ~6 per mil) is substantially larger than those of marine carbonates. Previously, this offset was explained by the physiological response of plants to increases in surface humidity (Bowen et al., 2004, doi:10.1038/nature03115). But this mechanism is not an effective explanation in this wet Arctic setting, leading us to hypothesize that the true magnitude of the excursion - and associated carbon input - was greater than originally surmised. Greater carbon release and strong hydrological cycle feedbacks may help explain the maintenance of this unprecedented warmth.of this unprecedented warmth.
Coverage:
Latitude: 87.866580 * Longitude: 136.177350
Date/Time Start: 2004-08-27T00:00:00 * Date/Time End: 2004-08-27T00:00:00
Minimum DEPTH, sediment/rock: 378.21 m * Maximum DEPTH, sediment/rock: 390.71 m
Event(s):
302-M0004A (ACEX-M4A) * Latitude: 87.866580 * Longitude: 136.177350 * Date/Time: 2004-08-27T00:00:00 * Elevation: -1287.9 m * Penetration: 427.9 m * Recovery: 85.91 m * Location: Arctic Ocean * Campaign: Exp302 (Arctic Coring Expedition, ACEX) * Basis: Vidar Viking * Device: Drilling/drill rig (DRILL)
Comment:
Depth, sediment=Depth (mcd)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rockDepthmGeocode
2Sample code/labelSample labelPagani, Mark
3n-Alkane C17, d13CC17 d13Cper mil PDBPagani, MarkMass spectrometer Finnigan MAT 253
4n-Alkane C17, d13C, standard deviationC17 d13C std dev±Pagani, MarkMass spectrometer Finnigan MAT 253
5n-Alkane C27, d13CC27 d13Cper mil PDBPagani, MarkMass spectrometer Finnigan MAT 253
6n-Alkane C27, d13C, standard deviationC27 d13C std dev±Pagani, MarkMass spectrometer Finnigan MAT 253
7n-Alkane C29, d13CC29 d13Cper mil PDBPagani, MarkMass spectrometer Finnigan MAT 253
8n-Alkane C29, d13C, standard deviationC29 d13C std dev±Pagani, MarkMass spectrometer Finnigan MAT 253
9n-Alkane C17, dDC17 dDper mil SMOWPagani, MarkMass spectrometer Finnigan MAT 253
10n-Alkane C17, dD, standard deviationC17 dD std dev±Pagani, MarkMass spectrometer Finnigan MAT 253
11n-Alkane C27, dDC27 dDper mil SMOWPagani, MarkMass spectrometer Finnigan MAT 253
12n-Alkane C27, dD, standard deviationC27 dD std dev±Pagani, MarkMass spectrometer Finnigan MAT 253
13n-Alkane C29, dDC29 dDper mil SMOWPagani, MarkMass spectrometer Finnigan MAT 253
14n-Alkane C29, dD, standard deviationC29 dD std dev±Pagani, MarkMass spectrometer Finnigan MAT 253
Size:
417 data points

Download Data

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

View dataset as HTML