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  • 1
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    Oligocene Biomarker Temperature Estimates from ODP Hole 154-929A and DSDP Hole 75-516F (2020)
    PANGAEA
    Details
    Publication Date: 2024-07-19
    Description: Falling atmospheric CO2 levels led to cooling through the Eocene and the expansion of Antarctic ice sheets close to their modern size near the beginning of the Oligocene, a period of poorly documented climate. Here we present the first record of climate evolution across the entire Oligocene (33.9-23.0 Ma) based on new TEX86 Sea Surface Temperature (SST) estimates from southwestern Atlantic Deep Sea Drilling Project Site 516 (paleolatitude ~ 36°S) and western equatorial Atlantic Ocean Drilling Project Site 929 (paleolatitude ~ 0°), combined with a compilation of existing SST records and climate modeling. In this relatively low CO2 Oligocene world (~300-700 ppm), warm climates similar to those of the late Eocene continued with only brief interruptions, while the Antarctic ice sheet waxed and waned. SSTs are spatially heterogenous, but generally support late Oligocene warming coincident with declining atmospheric CO2. This Oligocene warmth, especially at high latitudes, belies a simple relationship between climate and atmospheric CO2 and/or ocean gateways, and is only partially explained by current climate models. Though the dominant climate drivers of this enigmatic Oligocene world remain unclear, our results help fill a gap in understanding past Cenozoic climates and the way long-term climate sensitivity responded to varying background climate states.
    Keywords: Deep Sea Drilling Project; DSDP; Ocean Drilling Program; ODP; Oligocene; TEX86
    Type: dataset bundled publication
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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  • 2
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    Plio-Pleistocene Mg/Ca and TEX86 sea surface temperature records of ODP Sites 184-1143 and 165-999 (2014)
    PANGAEA
    In:  Supplement to: O'Brien, Charlotte L; Foster, Gavin L; Martínez-Botí, Miquel Àngel; Abell, Richard; Rae, James W B; Pancost, Richard D (2014): High sea surface temperatures in tropical warm pools during the Pliocene. Nature Geoscience, 7, 606-611, https://doi.org/10.1038/ngeo2194
    Details
    Publication Date: 2024-07-19
    Description: The western warm pools of the Atlantic and Pacific oceans are a critical source of heat and moisture for the tropical climate system. Over the past five million years, global mean temperatures have cooled by 3-4 °C. Yet, current reconstructions of sea surface temperatures indicate that temperature in the warm pools has remained stable during this time. This stability has been used to suggest that tropical sea-surface temperatures are controlled by some sort of thermostat-like regulation. Here we reconstruct sea surface temperatures in the South China Sea, Caribbean Sea and western equatorial Pacific Ocean for the past five million years, using a combination of the Mg/Ca, TEXH86-and Uk'37 surface temperature proxies. Our data indicate that during the period of Pliocene warmth from about 5 to 2.6 million years ago, the western Pacific and western Atlantic warm pools were about 2 °C warmer than today. We suggest that the apparent lack of warming seen in the previous reconstructions was an artefact of low seawater Mg/Ca ratios in the Pliocene oceans. Taking this bias into account, our data indicate that tropical sea surface temperatures did change in conjunction with global mean temperatures. We therefore conclude that the temperature of the warm pools of the equatorial oceans during the Pliocene was not limited by a thermostat-like mechanism.
    Keywords: Deep Sea Drilling Project; DSDP; Ocean Drilling Program; ODP
    Type: dataset publication series
    Format: application/zip, 18 datasets
    Location Call Number Limitation Availability
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  • 3
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    (Table S6) Published Pliocene-Pleistocene Mg/Ca-SST data for DSDP Hole 22-214, corrected for changes in Mg/Casw, Globigerinoides ruber (2014)
    PANGAEA
    Details
    Publication Date: 2024-07-23
    Keywords: 22-214; AGE; Calculated from Mg/Ca ratios (Dekens et al. 2002); Corrected; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Globigerinoides ruber, Magnesium/Calcium ratio; Glomar Challenger; Indian Ocean//RIDGE; interpolated; Leg22; Magnesium/Calcium ratio; Sea surface temperature, annual mean
    Type: dataset
    Format: text/tab-separated-values, 260 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    (Table 3) CO2 reconstruction for DSDP Hole 94-608 (2018)
    PANGAEA
    Details
    Publication Date: 2024-07-23
    Keywords: -; 94-608; AGE; Alkenone C37:2, δ13C; Carbon dioxide; Carbon dioxide, aquatic, fraction; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; Globigerinoides spp., δ13C; Glomar Challenger; Haptophytes, biomass, δ13C; Leg94; North Atlantic/FLANK; Sample code/label; Sea surface temperature, annual mean; SST, BAYSPAR (BAYesian SPAtially-varying Regression); δ13C, carbon dioxide, aquatic; δ13C, carbon dioxide, gaseous; ε
    Type: dataset
    Format: text/tab-separated-values, 2584 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Oligocene Biomarker Temperature Estimates from DSDP Hole 75-516F (2020)
    PANGAEA
    Details
    Publication Date: 2024-07-23
    Keywords: 72-516F; Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; AGE; Branched and isoprenoid tetraether index; Crenarchaeol, fractional abundance; Crenarchaeol isomer, fractional abundance; Deep Sea Drilling Project; Depth, composite top; DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Glycerol dialkyl glycerol tetraethers, fractional abundance Ia; Glycerol dialkyl glycerol tetraethers, fractional abundance IIa; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa; Leg72; Methane index; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Ocean Drilling Program; ODP; Oligocene; Ring index; Sample code/label; Sample comment; Sample ID; Sea surface temperature; South Atlantic/CONT RISE; SST, from BAYSPAR (50th Percentile); SST, from BAYSPAR (5th Percentile); SST, from BAYSPAR (95th Percentile); SST, from TEX86H; Tetraether index of 86 carbon atoms; TEX86; Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; ΔRing index
    Type: dataset
    Format: text/tab-separated-values, 1860 data points
    Location Call Number Limitation Availability
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  • 6
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    (Table 1) Fractional abundances of GDGTs in DSDP Hole 94-608 (2018)
    PANGAEA
    Details
    Publication Date: 2024-07-23
    Keywords: 94-608; Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; AGE; Comment; Crenarchaeol, fractional abundance; Crenarchaeol regio-isomer; Deep Sea Drilling Project; DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Glycerol dialkyl glycerol tetraethers, fractional abundance Ia; Glycerol dialkyl glycerol tetraethers, fractional abundance Ib; Glycerol dialkyl glycerol tetraethers, fractional abundance Ic; Glycerol dialkyl glycerol tetraethers, fractional abundance IIa; Glycerol dialkyl glycerol tetraethers, fractional abundance IIb; Glycerol dialkyl glycerol tetraethers, fractional abundance IIc; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIb; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIc; Isoprenoid glycerol dialkyl glycerol tetraether; Leg94; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; North Atlantic/FLANK; Sample code/label; Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance
    Type: dataset
    Format: text/tab-separated-values, 2970 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    (Table 2) Biomarker indices of DSDP Hole 94-608 (2018)
    PANGAEA
    Details
    Publication Date: 2024-07-23
    Keywords: 94-608; Acyclic glycerol dialkyl glycerol tetraether; AGE; Alkenone, unsaturation index UK'37; Branched and isoprenoid tetraether index; Branched glycerol dialkyl glycerol tetraether; Calculated, TEX86; Comment; Crenarchaeol; Deep Sea Drilling Project; DEPTH, sediment/rock; Difference; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; GSA Geological Time Scale v.4.0 2012; Isoprenoid glycerol dialkyl glycerol tetraether; Leg94; Methane index; North Atlantic/FLANK; Ratio; Ring index; Ring index of tetraether index of 86 carbon atoms; Sample code/label; Sample mass; Sea surface temperature, annual mean; SST, BAYSPAR (BAYesian SPAtially-varying Regression); SST, from UK'37; Tetraether index of 86 carbon atoms
    Type: dataset
    Format: text/tab-separated-values, 3211 data points
    Location Call Number Limitation Availability
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  • 8
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    (Table S6) Published Pliocene-Pleistocene Mg/Ca-SST data for ODP Site 165-999, corrected for changes in Mg/Casw, Globigerinoides sacculifer (2014)
    PANGAEA
    Details
    Publication Date: 2024-07-23
    Keywords: 165-999; AGE; Calculated from Mg/Ca ratios (Dekens et al. 2002); Caribbean Sea; COMPCORE; Composite Core; Corrected; Globigerinoides sacculifer, Magnesium/Calcium ratio; interpolated; Joides Resolution; Leg165; Magnesium/Calcium ratio; Ocean Drilling Program; ODP; Sea surface temperature, annual mean
    Type: dataset
    Format: text/tab-separated-values, 1678 data points
    Location Call Number Limitation Availability
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  • 9
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    (Table S6) Published Pliocene-Pleistocene Mg/Ca-SST data for DSDP Hole 70-509B, corrected for changes in Mg/Casw, Globigerinoides sacculifer (2014)
    PANGAEA
    Details
    Publication Date: 2024-07-23
    Keywords: 70-509B; AGE; Calculated from Mg/Ca ratios (Dekens et al. 2002); Corrected; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Globigerinoides sacculifer, Magnesium/Calcium ratio; Glomar Challenger; interpolated; Leg70; Magnesium/Calcium ratio; North Pacific/MOUND; Sea surface temperature, annual mean
    Type: dataset
    Format: text/tab-separated-values, 722 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    (Table S1) GDGT abundance, temperature estimates, and BIT indices for ODP Site 184-1143 (2014)
    PANGAEA
    Details
    Publication Date: 2024-07-19
    Keywords: 184-1143; AGE; Branched and isoprenoid tetraether index; Branched and isoprenoid tetraether index, standard deviation; Calculated; Calculated from TEX86 (Kim et al., 2010); Calibrated, Deep Time Bayesian (Tierney and Tingley, 2013); COMPCORE; Composite Core; Crenarchaeol, fractional abundance; Crenarchaeol regio-isomer, fractional abundance; DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; DSDP/ODP/IODP sample designation; Hexamethylated branched glycerol dialkyl glycerol tetraether IIIa/a'; Joides Resolution; Leg184; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Ocean Drilling Program; ODP; Pentamethylated branched glycerol dialkyl glycerol tetraether IIa/a'; Sample code/label; Sea surface temperature, annual mean; Sea surface temperature, annual mean, standard deviation; South China Sea; Tetraether index of 86 carbon atoms; Tetramethylated branched glycerol dialkyl glycerol tetraether Ia; Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance
    Type: dataset
    Format: text/tab-separated-values, 2484 data points
    Location Call Number Limitation Availability
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