cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.742618
title: Stable carbon and oxygen isotope ratios of foraminifera and organic carbon of ODP Hole 188-1167A (Table 2)

description: Ocean Drilling Program Leg 188, Prydz Bay, East Antarctica is part of a larger initiative to explore the Cenozoic history of the Antarctic Ice Sheet through direct drilling and sampling of the continental margins. In this paper, we present stable isotopic results from Ocean Drilling Program (ODP) Site 1167 located on the Prydz Channel Trough Mouth Fan (TMF), the first Antarctic TMF to be drilled. The foraminifer-based d18O record is interpreted along with sedimentary and downhole logging evidence to reconstruct the Quaternary glacial history of Prydz Bay and the adjacent Lambert Glacier Amery Ice Shelf System (LGAISS). We report an electron spin resonance age date of 36.9±3.3 ka at 0.45 m below sea floor and correlate suspected glacial–interglacial cycles with the global isotopic stratigraphy to improve the chronology for Site 1167. The d18O record based on planktonic (Neogloboquadrina pachyderma (s.)) and limited benthic results (Globocassidulina crassa), indicates a trend of ice sheet expansion that was interrupted by a period of reduced ice volume and possibly warmer conditions during the early–mid-Pleistocene (0.9–1.38 Ma). An increase in d18O values after ~900 ka appears to coincide with the mid-Pleistocene climate transition and the expansion of the northern hemisphere ice sheet. The d18O record in the upper 50 m of the stratigraphic section indicates as few as three glacial–interglacial cycles, tentatively assigned as marine isotopic stages (MIS) 16–21, are preserved since the Brunhes/Matuyama paleomagnetic reversal (780 ka). This suggests that there is a large unconformity near the top of the section and/or that there may have been few extreme advances of the ice sheet since the mid-Pleistocene climate transition resulting in lowered sedimentation rates on the Prydz Channel TMF. The stable isotopic record from Site 1167 is one of the few available from the area south of the Antarctic Polar Front that has been linked with the global isotopic stratigraphy. Our results suggest the potential for the recovery of useful stable isotopic records in other TMFs.
description: Supplement to: Theissen, Kevin M; Dunbar, Robert G; Cooper, Alan K; Mucciarone, David A; Hoffmann, Dirk L (2003): The Pleistocene evolution of the East Antarctic Ice Sheet in the Prydz bay region: stable isotopic evidence from ODP Site 1167. Global and Planetary Change, 39(3-4), 227-256
DOI: 10.1594/pangaea.840843
title: Late Neogene benthic stable isotope record of ODP Hole 165-999A

description: We report on epibenthic foraminiferal d18O and d13C and percentage coarse fraction records from Caribbean Ocean Drilling Program (ODP) Site 999 (12°44'N, 78°44'W, water depth 2828 m) spanning the interval from 8.5 to 5.3 Ma. Low epibenthic d13C values and low amounts of sand-sized particles (mostly foraminifer shells) indicate a poorly ventilated deep Caribbean throughout the late Miocene. At this time the deep Caribbean was dominated by a nutrient-rich and corrosive water mass. A generally constant d13C gradient between the Caribbean and deep Atlantic records during the late Miocene suggests that the fluctuations in d13C reflect global changes in d13C of the dissolved inorganic carbon due to varying erosion of organic carbon from terrigenous soils and shelf sediments. The observed 100-kyr cyclicity of epibenthic d13C is in good accordance with the variability of terrigenous input to the equatorial Atlantic as recorded by magnetic susceptibility records of the Ceara Rise. However, some short-term gradient changes between 7.0 and 4.5 Ma indicate a poorer ventilation of the deep Atlantic related to a reduced production of deep water in the Atlantic. The Messinian Salinity Crisis between 6.0 and 5.3 Ma did not affect the intermediate to deep water gradient between the Caribbean and the Atlantic. Comparison to the Bahama platform record of ODP Site 1006, however, indicates a poorer ventilation of the shallower northern Caribbean basins coincident with the isolation of the Mediterranean Sea.
description: DEPTH, sediment is given in mbsf.
description: Supplement to: Bickert, Torsten; Haug, Gerald H; Tiedemann, Ralf (2004): Late Neogene benthic stable isotope record of ODP Site 999: Implications for Caribbean paleoceanography, organic carbon burial and the Messininian Salinity Crisis. Paleoceanography, 19(1), PA1023
DOI: 10.1594/pangaea.132801
title: Stable oxygen isotope ratios of Cibicidoides wuellerstorfi from the Plio-Pleistocene section of Site ODP 184-1143 in the South China Sea

description: All benthic foraminiferal data are based on Cibicidoides wuellerstorfi, or Uvigerina peregrina data corrected to C. wuellerstorfi values following the standard of Shackleton and Hall (1983, doi:10.2973/dsdp.proc.69.118.1983), 0.64‰ was subtracted from the delta18O values of U. peregrina
DOI: 10.1594/pangaea.919588
title: Stable carbon and oxygen isotope ratios of foraminifera of IODP Site 341-U1421
DOI: 10.1594/pangaea.56207
title: (Table 5) Isotopes and paleoproductivity of sediment core PS2212-3

description: Ages modified from Vogt (1997, hdl:10013/epic.10254).
DOI: 10.1594/pangaea.58453
title: (Fig. 4) Distribution and stable isotope record of foraminifera, and ice-rafted debris sediment core PS1243-1

description: age is given in calendar years
DOI: 10.1594/pangaea.140005
title: Stable isotopes on Globigerinoides ruber in sediment core GeoB3808-6
DOI: 10.1594/pangaea.56206
title: (Table 3) Isotopes and paleoproductivity of sediment core PS2138-1

description: Ages modified after Knies (1999, hdl:10013/epic.10307).
DOI: 10.1594/pangaea.139997
title: Stable isotopes on Globigerinoides ruber in sediment core GeoB1105-4
DOI: 10.1594/pangaea.527925
title: Benthic foraminifera assemblages and stable isotopes of sediment core PS2458-4
DOI: 10.1594/pangaea.626593
title: (Table 3) Isotope data from nine sites on a north-south transect from the Congo Fan (4°S) to the Cape Basin (30°) representing the glacial stage MIS 6a

description: calc. % C4: Estimates are based on 5% C4 plants in the Congo area and a d13C value of C4 plants of -21 per mil.
DOI: 10.1594/pangaea.834857
title: (Table 1) Stable isotopic composition of water samples from Hakon Mosby Mud Vulcano
DOI: 10.1594/pangaea.855372
title: Stable isotope ratios of Cibicidoides of sediment core KNR159-36
DOI: 10.1594/pangaea.626589
title: (Table 3) Isotope data from nine sites on a north-south transect from the Congo Fan (4°S) to the Cape Basin (30°) representing the interglacial stage MIS 1

description: calc. % C4: Estimates are based on 5% C4 plants in the Congo area and a d13C value of C4 plants of -21 per mil.
DOI: 10.1594/pangaea.730467
title: (Table 1) Stable oxygen isotope ratios of Cibicidoides wuellerstorfi from sediment core GeoB3938-1

description: Dataset corrected on 2017-06-21: Data were erroneously linked to event GeoB3939-1 instead of GeoB3938-1.
DOI: 10.1594/pangaea.833226
title: Lipids of sediment core MD08-3167
DOI: 10.1594/pangaea.843935
title: Chemical composition of Holocene sediment core M51/3_601 (SL152) from the Eastern Mediterranean Sea
DOI: 10.1594/pangaea.223486
title: Stable isotope data of sediment core GeoB2109-1
DOI: 10.1594/pangaea.58455
title: (Fig. 5) Distribution and stable isotope record of foraminifera, and ice-rafted debris of sediment core PS1230-1 (fig 5)

description: age is given in calendar years
DOI: 10.1594/pangaea.203893
title: (Table AT1) Grain size distribution and stable isotope record of benthic foraminifera of ODP Hole 175-1085A

description: The Walvis Paradox states that opal accumulation fluctuates in counterphase to general productivity on Walvis Ridge, off northern Namibia. Sediments of early Quaternary age from Site 1085 (Cores 175-1085A-7H to 10H, off South Africa) were studied to check the phase relationships of general productivity and opal deposition in the region off the Oranje River, near the southern end of the Namibia upwelling system. The proxies used are delta18O of Cibicidoides wuellerstorfi, delta13C of C. wuellerstorfi, benthic foraminifers per gram (BF/g), Uvigerina spp. per gram (U/g), estimated diatom abundance (EDA) and sulfide and oxide aggregates (SOA) in the coarse fraction. EDA and BF/g are taken to indicate diatom and organic matter productivity, respectively. Oxygen isotopes were used to determine phase within the glacial-interglacial cycles.The phase relationships between the different proxies emerge when applying internal stacking methods. For Core 175-1085A-7H, five prescribed 41-k.y. cycles were combined into an average 41-k.y. cycle for the different indices. Productivity indices (BF/g and U/g) tend to follow delta18O in the accustomed manner (with glacial periods showing maximum productivity), but not EDA, whose maximum appears closer to interglacials, offset toward cooling. Thus, phase relationships are similar to those on Walvis Ridge, extending the Walvis Paradox to the southern end of the Namibia upwelling system for the early Quaternary. A tentative reconstruction of the phase of intensity of mixing is given, based on the two productivity indicators EDA and BF/g. Mixing is strongest during the glacial maximum.
description: Supplement to: Anderson, Patricia A; Charles, Christopher D; Berger, Wolfgang H (2001): Walvis Paradox confirmed for the Early Quaternary at the Southern End of the Namibia upwelling system, ODP Site 10851. In: Wefer, G; Berger, WH; Richter, C (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 175, 1-31
DOI: 10.1594/pangaea.218133
title: (Table T6) Stable oxygen and carbon isotope ratios of Neogloboquadrina pachyderma (sinistral) at ODP Site 177-1093 in the Southern Ocean

description: Depth is composite depth (mcd). Stable isotope analyses were conducted at the University of Florida (UF) below 71.03 mcd, and Scripps Institution of Oceanography (SIO)
DOI: 10.1594/pangaea.819252
title: (Table 11) Carbon and oxygen isotope values for foraminifera in sediment core AOS94_B19
DOI: 10.1594/pangaea.843933
title: Chemical composition of Holocene sediment core M51/3_563 from the Eastern Mediterranean Sea
DOI: 10.1594/pangaea.742793
title: Stable carbon and oxygen isotopic composition of benthic foraminifera of IODP Site 306-U1313

description: Old Version, please see new version doi:10.1594/PANGAEA.871350
DOI: 10.1594/pangaea.789142
title: Stable oxygen isotope ratios of Cibicidoides wuellerstorfi and Uvigerina sp. from ODP Sites 184-1147 and 184-1148

description: Sediment depth is given in meters composite depth [mcd].
DOI: 10.1594/pangaea.713175
title: Globigerinoides ruber (white) isotopes of sediment core GeoB1408-3
DOI: 10.1594/pangaea.67490
title: (Table A5) Stable isotope data of ODP Hole 154-928C
DOI: 10.1594/pangaea.856583
title: Stable carbon and oxygen isotope ratios of planktonic and benthic foraminifera from IODP Site 306-U1313 in the Atlantic Ocean (MIS 23-19)
DOI: 10.1594/pangaea.323640
title: (Table 4) Stable oxygen and carbon isotopic composition from plankton sample GeoB8336-2
DOI: 10.1594/pangaea.67485
title: (Table A4) Stable isotope data of ODP Hole 154-927A
DOI: 10.1594/pangaea.54707
title: Stable isotope data of sediment core GeoB2109-1
DOI: 10.1594/pangaea.609881
title: Stable carbon isotope values of different dead benthic foraminifera in surface sediments
DOI: 10.15468/dl.vcn3ue
title: Occurrence Download

description: A dataset containing 1764 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is one of (Human Observation, Machine Observation, Observation)",
 "Country is China",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Chroicocephalus brunnicephalus (Jerdon, 1840)",
 "Year 1980-2025"
 ]
}

 The dataset includes 1764 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0003670-250310093411724/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.54687
title: Stable isotope analysis on sediment core PS2446-4
DOI: 10.1594/pangaea.779466
title: (Table 6) Stable carbon and oxygen isotope composition of live and dead benthic foraminifera in surface sediments at Bouvet Island stations

description: -0.05 m depth is mean of MUC bottom water sample.
DOI: 10.1594/pangaea.842418
title: (Table 3) Stable isotope composition of benthic foraminifera from Kara Sea sediment cores
DOI: 10.1594/pangaea.856872
title: Stable isotopic composition of benthic foraminifera in Florida Keys sediments
DOI: 10.1594/pangaea.775316
title: (Table AT2) Nitrogen concentrations and d15N of sediments from ODP Holes 170-1040C and 205-1254A decalcified with varying HCl concentrations

description: Leg 205 samples were frozen onboard. Leg 170 sample was air-dried and stored as a dried powder.
DOI: 10.1594/pangaea.802561
title: (Table 3) Planulina ariminensis δ¹⁸O and Mg/Ca, the predicted d18O of calcite and the calcification temperature of core top samples, as well as temperature, salinity, Delta[CO3**2-]calcite of bottom waters

description: Delta d18O (Predicted - Measurement) is the difference between the predicted d18O of calcite and the P. ariminensis d18O.The calcification temperature is calculated after equation (5).Delta T is the difference between the calcification temperature and the bottom water temperature.* Mean values of CTD stations GeoB9532-4, 9533-4, 9534-1, 9535-1.# Data from the WOA2009 [Antonov et al., 2010; Locarnini et al., 2010].
DOI: 10.1594/pangaea.67483
title: (Table A3) Stable isotope data of ODP Hole 154-926C
DOI: 10.1594/pangaea.688707
title: (Appendix A) Stable carbon and oxygen isotope ratios of Cretaceous planktic foraminifera of ODP Site 207-1257 from the Demerara Rise in the western equatorial Atlantic
DOI: 10.1594/pangaea.67526
title: Stable isotope data of ODP Hole 154-925C (Table A2)
DOI: 10.1594/pangaea.688708
title: (Appendix A) Stable carbon and oxygen isotope ratios of Cretaceous planktic foraminifera of ODP Site 207-1259 from the Demerara Rise in the western equatorial Atlantic
DOI: 10.1594/pangaea.784178
title: (Table T3) Oxygen and carbon isotope ratios of benthic foraminifers from ODP Sites 184-1147 and 184-1148

description: DEPTH, sediment is given in mbsf. Specimens were chosen from the &gt;63 µm fraction. Adjustment factors after Shackleton et al. (1995, doi:10.2973/odp.proc.sr.138.117.1995).
DOI: 10.1594/pangaea.707183
title: (Table 3, Appendix) Stable carbon isotope composition of bulk sediment from DSDP Hole 74-527
DOI: 10.1594/pangaea.713056
title: (Table DR3) Foraminiferal oxygen and carbon isotope data for DSDP Site 62-463

description: Benthic foraminifera include species of Nuttalides and Gavelinella. All other species listed are planktic foraminifera. All other species listed are planktic foraminifera. Stable isotope data are expressed relative to the Vienna Peedee belemnite standard.
DOI: 10.1594/pangaea.837746
title: Stable isotope ratios of Maestrichtian foraminifera of DSDP Hole 44-390
DOI: 10.1594/pangaea.67491
title: (Table A6) Stable isotope data of ODP Hole 154-929A
DOI: 10.1594/pangaea.932074
title: Cibicidoides wuellerstorfi stable isotopes of ODP Site 175-1085
DOI: 10.1594/pangaea.422431
title: Stable isotope analysis of bulk carbonate in sediment core PG1163
DOI: 10.1594/pangaea.775314
title: (Table T1) Carbon and nitrogen concentrations, and δ¹³C and d15N of sediments from ODP Leg 205 Sites and Site 170-1040
DOI: 10.1594/pangaea.711133
title: (Table 1) Rock description and nitrogen concentrations and isotopic compositions of altered oceanic crust samples from ODP Hole 129-801C

description: The basement at Site 801 is divided into 4 intervals (the alkaline basalt sills and 3 MORB sections) according to the geochemical characterization of more than 100 communal samples (Plank et al., 2000; http://www-odp.tamu.edu/publications/185_IR/185ir.htm). For each interval, one composite was made for submarine extrusives (FLO) and clastic rocks (VCL) by combing proportional communal samples. FLO and VCL are then combined into the MIX composite in a ratio of 30-70%. The SUPER composite was made for the entire MORB interval by combing the 3 MORB composites. The SED composite was made for the intercalated sediments in the upper 230 m of the basement (mostly in Sequences I, III, and IV, see descriptions by Plank et al. (2000); http://www-odp.tamu.edu/publications/185_IR/185ir.htm; Alt (2003); doi:10.1029/2002GC000400).
DOI: 10.1594/pangaea.864230
title: (Figure 2b) Stable carbon isotopic composition of the n-C31 alkane (δ¹³Cwax) and d13Cwax corrected for the ''Suess Effect” of sediment core GeoB9501-4
DOI: 10.1594/pangaea.698998
title: Stable carbon and oxygen isotope ratios of Cibicidoides wuellerstorfi in the 500 to 340 kyr section of ODP Site 162-980 in the subpolar North Atlantic

description: Subpolar North Atlantic proxy records document millennial-scale climate variations 500,000 to 340,000 years ago. The cycles have an approximately constant pacing that is similar to that documented for the last glacial cycle. These findings suggest that such climate variations are inherent to the late Pleistocene, regardless of glacial state. Sea surface temperature during the warm peak of Marine Isotope Stage 11 (MIS 11) varied by 0.5° to 1°C, less than the 4° to 4.5°C estimated during times of ice growth and the 3°C estimated for glacial maxima. Coherent deep ocean circulation changes were associated with glacial oscillations in sea surface temperature.
description: Depth is composite depth (mcd)
description: Supplement to: Oppo, Delia W; McManus, Jerry F; Cullen, James L (1998): Abrupt climate cvents 500,000 to 340,000 years ago: evidence from subpolar North Atlantic sediments. Science, 279(5355), 1335-1338
DOI: 10.1594/pangaea.726883
title: Seawater carbonate chemistry and processes during experiments with Emiliania huxleyi (PML B93/11A)

description: The formation of calcareous skeletons by marine planktonic organisms and their subsequent sinking to depth generates a continuous rain of calcium carbonate to the deep ocean and underlying sediments. This is important in regulating marine carbon cycling and ocean-atmosphere CO2 exchange. The present rise in atmospheric CO2 levels causes significant changes in surface ocean pH and carbonate chemistry. Such changes have been shown to slow down calcification in corals and coralline macroalgae, but the majority of marine calcification occurs in planktonic organisms. Here we report reduced calcite production at increased CO2 concentrations in monospecific cultures of two dominant marine calcifying phytoplankton species, the coccolithophorids Emiliania huxleyi and Gephyrocapsa oceanica . This was accompanied by an increased proportion of malformed coccoliths and incomplete coccospheres. Diminished calcification led to a reduction in the ratio of calcite precipitation to organic matter production. Similar results were obtained in incubations of natural plankton assemblages from the north Pacific ocean when exposed to experimentally elevated CO2 levels. We suggest that the progressive increase in atmospheric CO2 concentrations may therefore slow down the production of calcium carbonate in the surface ocean. As the process of calcification releases CO2 to the atmosphere, the response observed here could potentially act as a negative feedback on atmospheric CO2 levels.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI).
description: Supplement to: Riebesell, Ulf; Zondervan, Ingrid; Rost, Björn; Tortell, Philippe Daniel; Zeebe, Richard E; Morel, Francois M M (2000): Reduced calcification of marine plankton in response to increased atmospheric CO2. Nature, 407, 364-367
DOI: 10.1594/pangaea.67493
title: (Table A6) Stable isotope data of ODP Hole 154-929C
DOI: 10.1594/pangaea.754732
title: Chemical composition of surface sediment samples from the Eastern Mediterranean Sea
DOI: 10.1594/pangaea.700818
title: Stable carbon and oxygen isotope ratios of Cibicidoides wuellerstorfi in the 340 to 0 kyr section of ODP Site 162-980 in the subpolar North Atlantic

description: Long, continuous, marine sediment records from the subpolar North Atlantic document the glacial modulation of regional climate instability throughout the past 0.5 million years. Whenever ice sheet size surpasses a critical threshold indicated by the benthic oxygen isotope (delta18O) value of 3.5 per mil during each of the past five glaciation cycles, indicators of iceberg discharge and sea-surface temperature display dramatically larger amplitudes of millennial-scale variability than when ice sheets are small. Sea-surface temperature oscillations of 1° to 2°C increase in size to approximately 4° to 6°C, and catastrophic iceberg discharges begin alternating repeatedly with brief quiescent intervals. The glacial growth associated with this amplification threshold represents a relatively small departure from the modern ice sheet configuration and sea level. Instability characterizes nearly all observed climate states, with the exception of a limited range of baseline conditions that includes the current Holocene interglacial.
description: Depth is composite depth (mcd). For the 500 to 340 kyr section see Oppo et al., (1998) data set: doi:10.1594/PANGAEA.698998
description: Supplement to: McManus, Jerry F; Oppo, Delia W; Cullen, James L (1999): A 0.5-million-year record of millennial-scale climate variability in the North Atlantic. Science, 283(5404), 971-975
DOI: 10.1594/pangaea.700860
title: (Table T1) Stable carbon and oxygen isotope ratios of benthic foraminifera in the Late Pliocene-Pleistocene section of ODP Site 181-1123 in the Southwest Pacific

description: Stable isotope records were generated for a late Pliocene-early Pleistocene interval from Ocean Drilling Program (ODP) Site 1123 in the southwest Pacific (41°47 S, 171°30 W; 3290 m water depth). Based on these data, new revisions were made to the shipboard splice and composite section. The isotope records will be used to evaluate the influence of North Atlantic and Southern Ocean deepwater masses on water entering the Pacific in the Deep Western Boundary Current. Three holes were cored at Site 1123, yielding a complete composite section over approximately the last 4.7 m.y. A representative spliced record (“the splice”) was developed aboard ship based on magnetic susceptibility, gamma ray attenuation bulk density, and percent reflectance data from the three adjacent holes (Carter, McCave, Richter, Carter, et al., 1999, doi:10.2973/odp.proc.ir.181.2000). No gaps in the sedimentary record were detected for the multiple-cored section of Site 1123. In addition to the isotope data, postcruise revisions to the splice and composite section based on stable isotope data are described here.
description: Depth, sediment is the depth of each Hole (mbsf). Interspecies corrections for oxygen isotope values followed Shackleton (1974), adding 0.64 to delta18O values from Cibicides sp. An offset of -0.9 was added to delta13C values measured from Uvigerina sp. (Duplessy et al., 1984, doi:10.1016/0033-5894(84)90099-1); 0.35 was added to the delta18O value for the single Nuttalides umbonifera analyzed (Shackleton and Hall, 1984, doi:10.2973/dsdp.proc.81.116.1984). The average species offsets between C. wuellerstorfi and Uvigerina sp. that were calculated for duplicates within the Site 1123 data set are in statistical agreement with these offsets
description: Supplement to: Harris, Sara E (2002): Data Report: Late Pliocene-Pleistocene carbon and oxygen stable isotopes from benthic foraminifers at Ocean Drilling Program Site 1123 in the Southwest Pacific. In: Richter, C (ed.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 181, 1-10