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  • Data  (166)
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  • 1
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    An early Eocene carbon cycle perturbation at in the Southern Alps
    PANGAEA
    In:  Supplement to: Agnini, Claudia; Macrì, Patrizia; Backman, Jan; Brinkhuis, Henk; Fornaciari, Eliana; Giusberti, Luca; Luciani, Valeria; Rio, Domenico; Sluijs, Appy; Speranza, Fabio (2009): An early Eocene carbon cycle perturbation at ∼52.5 Ma in the Southern Alps: Chronology and biotic response. Paleoceanography, 24(2), PA2209, https://doi.org/10.1029/2008PA001649
    Details
    Publication Date: 2023-05-12
    Description: At least two transient events of extreme global warming occurred superimposed on the long-term latest Paleocene and early Eocene warming trend in the Paleocene-Eocene thermal maximum (PETM) (or ETM1 ~55.5 Ma) and the Elmo (or ETM2 ~53.6 Ma). Other than warmth, the best known PETM is characterized by (1) significant injection of 13C-depleted carbon into the ocean-atmosphere system, (2) deep-sea carbonate dissolution, (3) strong biotic responses, and (4) perturbations of the hydrological cycle. Documentation of the other documented and suspected "hyperthermals" is, as yet, insufficient to assess whether they are similar in nature to the PETM. Here we present and discuss biomagnetostratigraphic data and geochemical records across two lower Eocene successions deposited on a continental margin of the western Tethys: the Farra and Possagno sections in the Venetian pre-Alps. We recognize four negative carbon isotope excursions within chron C24. Three of these shifts correlate to known or suspected hyperthermals: the PETM, the Eocene thermal maximum 2 (~53.6 Ma), and the informally named "X event" (~52.5 Ma). The fourth excursion lies within a reverse subchron and occurred between the latter two. In the Farra section, the X event is marked by a ~0.6 per mil negative carbon isotope excursion and carbonate dissolution. Furthermore, the event exhibits responses among calcareous nannofossils, planktic foraminifera, and dinoflagellates that are similar to, though less intense than, those observed across the PETM. Sedimentological and quantitative micropaleontological data from the Farra section also suggest increased weathering and runoff as well as sea surface eutrophication during this event.
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 2
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    Median iGDGT fractional abudances in modern peats, modern peats above 15ºC and Paleogene lignites (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: Crenarchaeol, fractional abundance; Crenarchaeol isomer, fractional abundance; Isoprenoid acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; Material
    Type: Dataset
    Format: text/tab-separated-values, 21 data points
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  • 3
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    Ecological grouping of Paleocene-Eocene dinoflagellate cysts (2018)
    PANGAEA
    In:  Supplement to: Frieling, Joost; Sluijs, Appy (2018): Towards quantitative environmental reconstructions from ancient non-analogue microfossil assemblages: Ecological preferences of Paleocene – Eocene dinoflagellates. Earth-Science Reviews, 185, 956-973, https://doi.org/10.1016/j.earscirev.2018.08.014
    Details
    Publication Date: 2023-01-13
    Description: Supplementary dataset for manuscript with the same title. The file contains ecological grouping of Paleocene-Eocene dinoflagellate cysts, 17 different proxy data types and 3 ratios calculated from the dinoflagellate cyst assemblages. Data has been compiled from literature sources, referenced in the manuscript.
    Keywords: File format; File name; File size; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 4 data points
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  • 4
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    Late Pliocene benthic δ¹³C and δ¹⁸O from ODP Site 959 and δ13C from ODP Site 662 in the eastern equatorial Atlantic (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: We present high-resolution late Pliocene (~2.7-3.5 Ma) benthic foraminiferal stable isotope records from eastern equatorial Atlantic ODP Site 959 (δ^13^C and δ^18^O) and ODP Site 662 (δ^13^C). The complementary δ^18^O record from Site 662 was published in Lisiecki and Raymo (2005; doi:10.1029/2004PA001071). Site 959 data was generated using the epibenthic species Cibicides wuellerstorfi and stable isotope analysis was performed at Utrecht University in 2016 on either a Thermo-Finnigan Kiel III automated preparation system coupled to a Thermo-Finnigan MAT 253 mass spectrometer, or a Thermo Finnigan GasBench-II carbonate preparation device coupled to a Thermo Finnigan Delta-V mass spectrometer. Site 662 data was generated using Cibicides wuellerstorfi when possible, and alternatively, a combination of Cibicides species (Cibicides spp.) was used. Stable isotope analysis was performed in the early 1990s at Massachusetts Institute of Technology using a VG Prism mass spectrometer. These new records are combined with previously published benthic δ¹³C and δ¹⁸O records. By assuming that both δ¹³C and δ¹⁸O behave as conservative tracers, we estimate the isotopic end-members of deep Atlantic water masses. At least three endmembers are needed to explain the spatial δ¹³C-δ¹⁸O variability in the deep North Atlantic Ocean: two Northern Component Water (NCW) and one Southern Component Water (SCW) water masses. We use a ternary mixing model to quantify the mixing proportions between SCW and NCW in the deep Atlantic ocean.
    Keywords: Benthic isotopes; Cibicides; Eastern Equatorial Atlantic; ODP Site 662; ODP Site 959; δ13C; δ18O
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 5
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    Carbonate geochemistry from an outcrop sample at Forada Site, Southern Alps, Italy (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: This dataset belongs to a data compilation that contains total organic carbon content, calcium carbonate content and concentrations for major elements, covering the Paleocene-Eocene Thermal Maximum, for the following sites: Forada Site, Italy, IODP 302 Site M0004, IODP 342 Site U1403, Bass River Site, US, Lodo Gulch Site, US, ODP 121 Site 752, and ODP 189 Site 1172. The data were generated in the period between 2014 – 2017 at the GeoLab of Utrecht University in The Netherlands. Organic carbon and CaCO3 were calculated following decalcification and C/N analysis with a Fisons Instruments CNS NA 1500 analyzer. Major elements were measured using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES, Perkin Elmer 9224 Optima 3000) following total destruction with hydrogen fluoride. These data are used to determine the redox conditions at the sites mentioned above. Here, we present the carbonate geochemistry from an outcrop sample at Forada Site.
    Keywords: CaCO3; Calcium carbonate; Carbon, organic, total; Corg; Element analyser, Fisons NA 1500; Eocene; Forada_Site; ICP-OES; IODP; iron; Italy; Molybdenum; OUTCROP; Outcrop sample; Paleocene; PETM; phosphurus; Sample ID; SECTION, height; TOC
    Type: Dataset
    Format: text/tab-separated-values, 18 data points
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  • 6
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    Major element composition from an outcrop sample at Lodo Gulch Site, Panoche Hills, California (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: This dataset belongs to a data compilation that contains total organic carbon content, calcium carbonate content and concentrations for major elements, covering the Paleocene-Eocene Thermal Maximum, for the following sites: Forada Site, Italy, IODP 302 Site M0004, IODP 342 Site U1403, Bass River Site, US, Lodo Gulch Site, US, ODP 121 Site 752, and ODP 189 Site 1172. The data were generated in the period between 2014 – 2017 at the GeoLab of Utrecht University in The Netherlands. Organic carbon and CaCO3 were calculated following decalcification and C/N analysis with a Fisons Instruments CNS NA 1500 analyzer. Major elements were measured using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES, Perkin Elmer 9224 Optima 3000) following total destruction with hydrogen fluoride. These data are used to determine the redox conditions at the sites mentioned above. Here, we present the major element composition from an outcrop sample at Lodo Gulch Site.
    Keywords: Aluminium; CaCO3; California; Corg; Eocene; ICP-MS; ICP-OES; Inductively coupled plasma mass spectrometry; IODP; iron; Iron; Lodo_Gulch_Site; Manganese; Molybdenum; OUTCROP; Outcrop sample; Paleocene; PETM; Phosphorus; phosphurus; Sample ID; SECTION, height; TOC; Vanadium
    Type: Dataset
    Format: text/tab-separated-values, 84 data points
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  • 7
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    Major element composition from an outcrop sample at Forada Site, Southern Alps, Italy (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: This dataset belongs to a data compilation that contains total organic carbon content, calcium carbonate content and concentrations for major elements, covering the Paleocene-Eocene Thermal Maximum, for the following sites: Forada Site, Italy, IODP 302 Site M0004, IODP 342 Site U1403, Bass River Site, US, Lodo Gulch Site, US, ODP 121 Site 752, and ODP 189 Site 1172. The data were generated in the period between 2014 – 2017 at the GeoLab of Utrecht University in The Netherlands. Organic carbon and CaCO3 were calculated following decalcification and C/N analysis with a Fisons Instruments CNS NA 1500 analyzer. Major elements were measured using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES, Perkin Elmer 9224 Optima 3000) following total destruction with hydrogen fluoride. These data are used to determine the redox conditions at the sites mentioned above. Here, we present the major element compositionfrom an outcrop sample at Forada Site.
    Keywords: Aluminium; CaCO3; Corg; Eocene; Forada_Site; ICP-MS; ICP-OES; Inductively coupled plasma mass spectrometry; IODP; iron; Iron; Italy; Manganese; Molybdenum; OUTCROP; Outcrop sample; Paleocene; PETM; Phosphorus; phosphurus; Sample ID; SECTION, height; TOC; Vanadium
    Type: Dataset
    Format: text/tab-separated-values, 98 data points
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  • 8
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    Abundances of isoGDGTs and and chrenarchaeol in the modern peat dataset (2020)
    PANGAEA
    Details
    Publication Date: 2023-02-07
    Keywords: Age, comment; Arctic Ocean; Area/locality; Branched glycerol dialkyl glycerol tetraether, Ia; Branched glycerol dialkyl glycerol tetraether, Ib; Branched glycerol dialkyl glycerol tetraether, Ic; Branched glycerol dialkyl glycerol tetraether, IIa; Branched glycerol dialkyl glycerol tetraether, IIa'; Branched glycerol dialkyl glycerol tetraether, IIb; Branched glycerol dialkyl glycerol tetraether, IIb'; Branched glycerol dialkyl glycerol tetraether, IIc; Branched glycerol dialkyl glycerol tetraether, IIc'; Branched glycerol dialkyl glycerol tetraether, IIIa; Branched glycerol dialkyl glycerol tetraether, IIIa'; Branched glycerol dialkyl glycerol tetraether, IIIb; Branched glycerol dialkyl glycerol tetraether, IIIb'; Branched glycerol dialkyl glycerol tetraether, IIIc; Branched glycerol dialkyl glycerol tetraether, IIIc'; Crenarchaeol; Crenarchaeol, fractional abundance; Crenarchaeol isomer; Crenarchaeol isomer, fractional abundance; Crenarchaeol regio-isomer/(Crenarchaeol regio-isomer + Crenarchaeol) ratio; DEPTH, sediment/rock; Eocene; ETM2; GDGT; GMGT; IODP; Isoprenoid acyclic glycerol dialkyl glycerol tetraether; Isoprenoid acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid dicyclic glycerol dialkyl glycerol tetraether; Isoprenoid dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, 4; Isoprenoid glycerol dialkyl glycerol tetraether, 5; Isoprenoid monocyclic glycerol dialkyl glycerol tetraether; Isoprenoid monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid tricyclic glycerol dialkyl glycerol tetraether; Isoprenoid tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; Lithology/composition/facies; Lomonosov Ridge; Paleocene; Paleolatitude; PETM; Reference/source; Sample ID; SECTION, height
    Type: Dataset
    Format: text/tab-separated-values, 1968 data points
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  • 9
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    GDGT and GMGT data (2020)
    PANGAEA
    Details
    Publication Date: 2023-02-24
    Description: * These data represent: Raw data presented in Sluijs et al., 2020 (Climate of the Past) - Peak areas of GDGTs and GMGTs peaks across the late Paleocene - early Eocene of Hole 4 of the Arctic Coring EXpecition (ACEX). - Abundances of isoGDGTs and and chrenarchaeol in the modern peat dataset. * where The data were generated on sediment samples taken from drill cores retreived from Lomonosov Ridge, Arctic Ocean, 2004 by the Integrated Ocean Drilling Program, stored in the Bremen Core Repository. For the present paper, we analyzed organic lipid extracts previously documented by Sluijs et al., (2006; 2008; 2009) using the current methodological standards. * when and how The lipid extracts were analyzed in 2018 in the organic geochemical laboratory at Utrecht University using Ultra High Performance liquid chromatography and atmospheric pressure chemical ionization mass spectrometry using an Agilent 1260 Infinity series HPLC system coupled to an Agilent 6130 single-quadrupole mass spectrometer (methods follow Hopmans et al., 2016) * why We re-analyzed the extracts because analytical methodology has improved since the generation of the original datasets and because the dataset from the Arctic is crucial for Paleocene-Eocene climatology.
    Keywords: Arctic Ocean; Eocene; ETM2; GDGT; GMGT; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Lomonosov Ridge; Paleocene; PETM
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 10
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    (Table S1) Carbonate content ans stable isotope record of samples from Farra d'Alpago and Possagno section
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Calcium carbonate; Event label; Farra_Section; Mass spectrometer Finnigan MAT 252; OUTCROP; Outcrop sample; Possagno_section; Sample code/label; SECTION, height; Southern Alps; δ13C, carbonate; δ18O, carbonate
    Type: Dataset
    Format: text/tab-separated-values, 386 data points
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