cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.732921
title: (Table 3) B/Ca and d11B measurements of Globigerinoides ruber white at ODP sites 154-925 to 154-929

description: size fraction 300-355 µm, ss
DOI: 10.1594/pangaea.545108
title: (Table 1) Stable oxygen and carbon isotope composition of bivalve shells of sediment core CRP-1, and of Wright Valley and McMurdo Sound

description: Bivalve shells from the CRP-l drillhole, Cape Roberts (Victoria Land Basin), have been analysed for their stable isotope composition to obtain information on Antarctic coastal palaeoceanography during the middle Pleistocene and early Miocene. Shells from a middle Pleistocene carbonate-rich unit (lithostratigraphic Unit 3.1; 33.82-3 1.89 metres below sea floor) have d180 values between +3.64 and +4.56 per mil PDB and d13C between +0.85 and + 1.09 per mil PDB. Oxygen isotopic compositions are close to or at equilibrium conditions with scawater at a temperature in the range of c. -2 to 0°C in the absence of melt water influx. Thus, the CRP-1 carbonate-unit was deposited under 'interglacial' polar conditions, comparable to those of the present-day and isotope stage 3 in the Ross Sea. 'Chlamys' sp. 1, retrieved from a lower Miocene diamictite at 62.19 mbsf, is the only unaltered shell of this age in CRP-1 and yielded a d18O value of -4.64 per mil PDB and d13C of -3.35 per mil PDB. These values show that palaeoceanographic conditions during early Miocene time were significantly different from those of today. The depleted stable oxygen isotope composition of the Miocene shell reflects both an appreciable input of melt or fresh water and warmer-than-present seawater temperatures.
description: Supplement to: Taviani, Marco; Zahn, Rainer (1998): The stable oxygen isotope record of Pleistocene and Miocene bivalves in the CRP-1 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 5(3), 419-423
DOI: 10.1594/pangaea.926673
title: Needle and stem parameters observed on larch trees in the taiga-tundra boundary of northeastern Siberia (S13)
DOI: 10.1594/pangaea.962077
title: Larch, ecosystem, and climatic, environmental variables at different sites in northeastern Siberia (S14)
DOI: 10.1594/pangaea.218134
title: (Table T7) Stable oxygen and carbon isotope ratios of Neogloboquadrina pachyderma (sinistral) at ODP Site 177-1094 in the Southern Ocean

description: Depth is composite depth (mcd). Stable isotope analyses were conducted at the University of Florida (UF)
DOI: 10.1594/pangaea.846542
title: Stable isotope composition of diatom-bound organic matter of sediment core SO136_111GC-12
DOI: 10.1594/pangaea.757213
title: (Table 2) Molecular composition and δ¹³C of methane and ethane of absorbed hydrocarbons from selected intervals of ODP Site 170-1041
DOI: 10.1594/pangaea.780277
title: (Table T1) Oxygen and carbon stable isotopes of calcareous microfossils from ODP Holes 189-1170A and 189-1172A
DOI: 10.1594/pangaea.223492
title: Stable isotope data of sediment core GeoB3808-6
DOI: 10.1594/pangaea.811223
title: (Table 1) Geochemical and lithological investigation of DSDP Hole 48-401
DOI: 10.1594/pangaea.67488
title: (Table A5) Stable isotope data of ODP Hole 154-928A
DOI: 10.1594/pangaea.218131
title: (Table T4) Stable oxygen and carbon isotope ratios of benthic and planktonic foraminifers and carbonate concentrations of ODP Site 177-1090 in the Southern Ocean

description: Depth is composite depth (mcd). Stable isotope analyses were conducted at the University of Florida (UF)
DOI: 10.1594/pangaea.757212
title: (Table 1) Molecular composition of free gas samples and C1/(C2 + C3)-ratios, δ¹³C of methane and ethane, and dD of methane ratios of ODP Leg 170 samples
DOI: 10.1594/pangaea.693830
title: Stable isotopes in opal of sediment core PS2606-6
DOI: 10.1594/pangaea.873336
title: (Figure 3) Stable oxygen isotopes on foraminifera of sediment core JM97-948/2A

description: In the old version of the dataset (https://doi.pangaea.de/10.1594/PANGAEA.510799) the age model was wrong. This is now corrected and the date and age model is presented as originally published in Risebrobakken et al., 2003.
DOI: 10.1594/pangaea.276118
title: (Appendix A) Oxygen and carbon isotopic data of living (stained) Stainforthia fusiformis from Havstens Fjord

description: The uppermost 10 mm of the cores were used.
DOI: 10.1594/pangaea.793485
title: (Table 2) Isotopic composition of Cibicidoides wuellerstorfi from ODP Hole 167-1020C sediments

description: DEPTH, sediment is given in mbsf.
DOI: 10.1594/pangaea.276119
title: (Appendix B) Oxygen and carbon isotopic data of living (stained) Stainforthia fusiformis from Gullmar Fjord

description: The uppermost 10 mm of the cores were used.
DOI: 10.1594/pangaea.323638
title: (Table 4) Stable oxygen and carbon isotopic composition from plankton sample Site GeoB8318
DOI: 10.1594/pangaea.775967
title: (Table T1) Stable oxygen and carbon isotope ratios of foraminifera from ODP Leg 207 sediments

description: Depth, sediment is given in mbsf.
DOI: 10.1594/pangaea.839063
title: d15N record of sediment cores SO90-39KG and SO130_275KL
DOI: 10.1594/pangaea.762947
title: (Appendix A) Oxygen and carbon isotope results of detrital carbonate grains of Heinrich layers from HU90-013-028 and IODP Sites 303-U1302/U1303/U1308 in the North Atlantic Ocean

description: We report oxygen and carbon isotope results of detrital carbonate grains from Heinrich layers at three sites in the North Atlantic located along a transect from the Labrador Sea to the eastern North Atlantic. Oxygen isotopic values of individual detrital carbonate grains from six Heinrich layers at all sites average - 5.6 ppm ± 1.5 ppm (1sigma; n = 166), reflecting values of dolomitic limestone derived from source areas in northeastern Canada. The d18O of bulk carbonate at Integrated Ocean Drilling Program (IODP) Site U1308 (re-occupation of Deep Sea Drilling Project (DSDP) Site 609) in the eastern North Atlantic records the proportion of detrital to biogenic carbonate and d18O decreases to - 5 ppm during Heinrich (H) events 1, 2, 4 and 5 relative to a background value of ~ 1 to 2 ppm for biogenic carbonate. Bulk d18O also decreases during H3 and H6 but only attains values of - 1ppm, indicating either a greater proportion of biogenic-to-detrital carbonate or a different source. Because the d18O of detrital carbonate is ~ 9 ppm lower than foraminifer carbonate, any fine-grained detrital carbonate not removed from the inner test chambers will lower foraminifer d18O. We conclude bulk carbonate d18O is a sensitive proxy for detrital carbonate and may be useful for identifying Heinrich layers in cores within and near the margins of the North Atlantic ice-rafted detritus (IRD) belt.
description: Supplement to: Hodell, David A; Curtis, Jason H (2008): Oxygen and carbon isotopes of detrital carbonate in North Atlantic Heinrich Events. Marine Geology, 256(1-4), 30-35
DOI: 10.1594/pangaea.793484
title: (Table 1) Isotopic composition of benthic foraminifers from ODP Site 167-1014 sediments

description: DEPTH, sediment is given in mbsf.
DOI: 10.1594/pangaea.865413
title: Palynological counts (dinoflagellate cysts) and foraminiferal geochemistry (δ¹⁸O, d18C, Mg/Ca) of the Pliocene-Pleistocene transition in DSDP Hole 94-610A
DOI: 10.1594/pangaea.223487
title: Stable isotope data of sediment core GeoB2117-1
DOI: 10.1594/pangaea.711136
title: (Table 2) Nitrogen concentrations and isotopic compositions of samples from DSDP holes from the Antarctic, Atlantic, and Pacific
DOI: 10.1594/pangaea.55125
title: Sedimentology of core PS2819-1
DOI: 10.1594/pangaea.830895
title: (Table 5) Stable oxygen isotope ratios of Globigerinoides ruber from core-top sediment samples
DOI: 10.1594/pangaea.55127
title: Sedimentology of core PS2820-1
DOI: 10.1594/pangaea.837668
title: Stable carbon and oxygen isotope rates of Maastrichtian ODP samples from Shatsky Rise

description: We present new isotopic and micropaleontological data from a depth transect on Shatsky Rise that record the response of the tropical Pacific to global biotic and oceanographic shifts during the mid-Maastrichtian. Results reveal a coupling between the upper ocean, characterized by a weak thermocline and low to intermediate productivity, and intermediate waters. During the earliest Maastrichtian, oxygen and neodymium isotope data suggest a significant contribution of relatively warm intermediate water from the North Pacific. Isotopic shifts through the early Maastrichtian suggest that this warmer water mass was gradually replaced by cooler waters originating in the Southern Ocean. Although the cooler water mass remained dominant through the remainder of the Maastrichtian, it was displaced intermittently at shallow intermediate depths by North Pacific intermediate water. The globally recognized "mid-Maastrichtian event" ~69 Ma, manifested by the brief appearance of abundant inoceramid bivalves over shallow portions of Shatsky Rise, is characterized by an abrupt increase (~2°-3°C) in sea surface temperatures, a greater flux of organic matter out of the surface ocean, and warmer (~4°C) intermediate waters. Results implicate simultaneous changes in surface waters and the sources/distribution patterns of intermediate water masses as an underlying cause for widespread biotic and oceanographic changes during mid-Maastrichtian time.
description: Supplement to: Frank, Tracy D; Thomas, Deborah J; Leckie, R Mark; Arthur, Michael A; Bown, Paul R; Jones, Kelly; Lees, Jackie A (2005): The Maastrichtian record from Shatsky Rise (northwest Pacific): A tropical perspective on global ecological and oceanographic changes. Paleoceanography, 20(1), PA1008
DOI: 10.1594/pangaea.704478
title: (Table 9) Stable carbon and oxygen isotope record of Paleocene foraminifera from ODP Hole 122-761B in the eastern subtropical Indian Ocean
DOI: 10.1594/pangaea.707833
title: (Appendix 1) Stable oxygen isotope ratios of Globigerinoides ruber and benthic foraminifera from ODP Site 184-1143

description: Analysed size fraction &gt;150 µm. Uvigerina peregrina d18O values can transferred to Cibicidoides wuellerstorfi d18O values by substracting 0.64‰ (Shackleton and Hall, 1983, doi:10.2973/dsdp.proc.69.118.1983)
DOI: 10.1594/pangaea.775968
title: (Table AT2) Stable oxygen and carbon isotope ratios of Whiteinella baltica after different cleaning procedures, ODP Core 207-1258B-51R
DOI: 10.1594/pangaea.223490
title: Stable isotope data of sediment core GeoB2204-2
DOI: 10.1594/pangaea.706924
title: (Table 2) Chemical composition of terrigenous material of deep-sea surface sediments
DOI: 10.1594/pangaea.706930
title: (Table 2) Chemical composition of terrigenous material from ODP Hole 138-850B
DOI: 10.1594/pangaea.855377
title: Stable isotope ratios of Cibicidoides wuellerstorfi of sediment core V24-253
DOI: 10.1594/pangaea.218111
title: (Table T1) Stable oxygen and carbon isotope ratios of Cibicidoides and carbonate concentrations of the sediment in ODP Hole 177-1088B in the Southern Ocean

description: Depth is composite depth (mcd). Stable isotope analyses were conducted at the University of Florida (UF)
DOI: 10.1594/pangaea.55823
title: Paleotemperatures, stable isotopes and alkenones in sediment core GeoB1016-3
DOI: 10.1594/pangaea.834581
title: (Table 3) Stable oxagen isotope record of planktonic foraminifera from Central Walvish Ridge

description: Above the Walvis Ridge, in the SE Atlantic Ocean, we collected living plantkic foraminifera from the upper water column using depth stratified plantkon tows. The oxygen isotope composition (d18Oc) in shells of foraminifera and shell concentration profiles show seasonal and depth habitats of individual species. The tow results are compared with the average annual deposition d18Oc from sediment traps and the interannual average d18Oc of fossil specimens in top sediments at the same site. The species Globigerinita glutinata best reflects the austral winter/spring sea surface temperature (SST). Its d18Oc signal in top sediments remains pristine. In contrast, tow results also show that Globigerinoides ruber continues to calcify below the surface mixed layer (SML), i.e., down to the deep chlorophyll maximum (DCM); hence its d18Oc signature of exported specimens reflects the SST only when SML incorporates the DCM. Deep tow and sediment trap results show that both Globorotalia truncatulinoides and Globorotalia inflata record the temperature between 150 and 350 m, depending on the season and the shell size. However, for all fossil taxa in sediments apart from Globigerinita glutinata, we observe a positive d18Oc shift with respect to the sediment trap and plankton tow values, likely related to the interannual flux changes and deep encrustation.
description: Supplement to: Loncaric, Neven; Peeters, Frank J C; Kroon, Dick; Brummer, Geert-Jan A (2006): Oxygen isotope ecology of recent planktic foraminifera at the central Walvis Ridge (SE Atlantic). Paleoceanography, 21(3), PA3009
DOI: 10.1594/pangaea.844873
title: (Table 3) Stable isotope record of Cretaceous foraminifera from DSDP Hole 44-392A

description: Mid-Cretaceous (Barremian-Turonian) plankton preserved in deep-sea marl, organic-rich shale, and pelagic carbonate hold an important record of how the marine biosphere responded to short- and long-term changes in the ocean-climate system. Oceanic anoxic events (OAEs) were short-lived episodes of organic carbon burial that are distinguished by their widespread distribution as discrete beds of black shale and/or pronounced carbon isotopic excursions. OAE1a in the early Aptian (~120.5 Ma) and OAE2 at the Cenomanian/Turonian boundary (~93.5 Ma) were global in their distribution and associated with heightened marine productivity. OAE1b spans the Aptian/Albian boundary (~113-109 Ma) and represents a protracted interval of dysoxia with multiple discrete black shales across parts of Tethys (including Mexico), while OAE1d developed across eastern and western Tethys and in other locales during the latest Albian (~99.5 Ma). Mineralized plankton experienced accelerated rates of speciation and extinction at or near the major Cretaceous OAEs, and strontium isotopic evidence suggests a possible link to times of rapid oceanic plateau formation and/or increased rates of ridge crest volcanism. Elevated levels of trace metals in OAE1a and OAE2 strata suggest that marine productivity may have been facilitated by increased availability of dissolved iron. The association of plankton turnover and carbon isotopic excursions with each of the major OAEs, despite the variable geographic distribution of black shale accumulation, points to widespread changes in the ocean-climate system. Ocean crust production and hydrothermal activity increased in the late Aptian. Faster spreading rates [and/or increased ridge length] drove a long-term (Albian-early Turonian) rise in sea level and CO2-induced global warming. Changes in ocean circulation, water column stratification, and nutrient partitioning lead to a reorganization of plankton community structure and widespread carbonate (chalk) deposition during the Late Cretaceous. We conclude that there were important linkages between submarine volcanism, plankton evolution, and the cycling of carbon through the marine biosphere.
description: Supplement to: Leckie, R Mark; Bralower, Timothy J; Cashman, Katharine V (2002): Oceanic anoxic events and plankton evolution: Biotic response to tectonic forcing during the mid-Cretaceous. Paleoceanography, 17(3), 13-1-13-29
DOI: 10.1594/pangaea.323636
title: (Table 4) Stable oxygen and carbon isotopic composition from plankton sample Site GeoB8305
DOI: 10.1594/pangaea.884579
title: Stable carbon isotope record during Termination I in sediment core GL1090

description: This dataset was updated on 2018-09-17: column no 1 with sediment depth was added.
DOI: 10.1594/pangaea.323642
title: (Table 4) Stable oxygen and carbon isotopic composition from plankton sample GeoB8338-4
DOI: 10.1594/pangaea.804372
title: (Table 4) Carbon, oxygen, and strontium isotopic composition of microdrilled samples and pore waters from ODP Leg 164 sites
DOI: 10.1594/pangaea.131693
title: (Appendix B) Stable carbon and oxygen isotope ratios of Bulimina aculeata from ODP Hole 178-1098C
DOI: 10.1594/pangaea.774003
title: (Appendix Table AT2) δ¹⁸O and δ¹³C of Cibicidoides mundulus for ODP Site 202-1237

description: Analytical reproducibility of the laboratory standard typically was about ±0.06 per mil for d18O and ±0.03 per mil for d13C (±1 sigma). Sediment depth is given in mcd. For each isotope analysis, up to five specimens of Cibicidoides mundulus were picked from the 250 to 500 µm fraction.
DOI: 10.1594/pangaea.729172
title: (Appendix 1e) Comparison of stable isotope measurements of ODP Hole 160-964A

description: Measurement of G. ruber (white) Type a normal with a) Finnigan MAT 251 mass spectrometer at AWIBremerhaven and b) Finnigan MAT 252 mass spectrometer at IFM-GEOMAR Kiel.
DOI: 10.1594/pangaea.833686
title: (Table 1) Stable oxygen isotope ratios of planktonic foraminifera in Carribean core top samples and calculated habitat depth

description: Pliocene d18O records of shallow and deep dwelling planktonic foraminifers from the Caribbean (Ocean Drilling Program sites 999 and 1000), the tropical east Pacific (sites 1241 and 851), and the Atlantic (site 925, Ceara Rise, and site 1006, western Great Bahama Bank) were used to examine Atlantic-Caribbean-Pacific atmospheric and oceanic linkages associated with the progressive closure of the Central American Seaway (5.5-3 Ma). Comparisons indicate the development of an inner-Caribbean salinity gradient in the mixed layer and salinity changes on precessional periodicities after 4.4 Ma (site 1000), when the Pacific-Caribbean throughflow became significantly restricted. The high-amplitude variability in salinity is also observed at site 1006, monitoring the Caribbean outflow into the Atlantic. Comparisons of Caribbean and Atlantic planktonic d18O records suggest the North Atlantic subtropical gyre as a major source for high-salinity surface waters. Precession-induced variations in the volume transport of Pacific surface water masses through the Panamanian Seaway are considered a main factor to explain the Caribbean salinity minima. Results from a coupled climate model point to changes in the El Niño-Southern Oscillation state as a potential trigger for changes in the amount of Pacific inflow into the Caribbean.
description: Supplement to: Steph, Silke; Tiedemann, Ralf; Prange, Matthias; Groeneveld, Jeroen; Nürnberg, Dirk; Reuning, Lars; Schulz, Michael; Haug, Gerald H (2006): Changes in Caribbean surface hydrography during the Pliocene shoaling of the Central American Seaway. Paleoceanography, 21(4), PA4221
DOI: 10.1594/pangaea.63632
title: Delta 13C measured on alkenones of surface sediment samples GeoB1008-6 to GeoB3603-1 from the South Atlantic

description: We have analyzed the stable carbon isotopic composition of the diunsaturated C37 alkenone in 29 surface sediments from the equatorial and South Atlantic Ocean. Our study area covers different oceanographic settings, including sediments from the major upwelling regions off South Africa, the equatorial upwelling, and the oligotrophic western South Atlantic. In order to examine the environmental influences on the sedimentary record the alkenone-based carbon isotopic fractionation (Ep) values were correlated with the overlying surface water concentrations of aqueous CO2 ([CO2(aq)]), phosphate, and nitrate. We found Ep positively correlated with 1/[CO2(aq)] and negatively correlated with [PO43-] and [NO3-]. However, the relationship between Ep and 1/[CO2(aq)] is opposite of what is expected from a [CO2(aq)] controlled, diffusive uptake model. Instead, our findings support the theory of Bidigare et al. (1997, doi:10.1029/96GB03939) that the isotopic fractionation in haptophytes is related to nutrient-limited growth rates. The relatively high variability of the Ep-[PO4] relationship in regions with low surface water nutrient concentrations indicates that here other environmental factors also affect the isotopic signal. These factors might be variations in other growth-limiting resources such as light intensity or micronutrient concentrations.
description: Supplement to: Benthien, Albert; Andersen, Nils; Schulte, Sonja; Müller, Peter J; Schneider, Ralph R; Wefer, Gerold (2002): Carbon isotopic composition of the C37:2 alkenone in core-top sediments of the South Atlantic Ocean: Effects of CO2 and nutrient concentrations. Global Biogeochemical Cycles, 16(1), 1012
DOI: 10.1594/pangaea.833015
title: Mg/Ca and δ¹⁸O data from the shallow dwelling foraminifera Globigerinoides ruber (sensu stricto), and d18O from the thermocline-dwelling foraminifera Neogloboquadrina dutertrei of sediment core GeoB12605-3
DOI: 10.1594/pangaea.320091
title: (Appendix 2) Stable oxygen isotope composition of planktic foraminifera at station GeoB4003-1 during winter
DOI: 10.1594/pangaea.871123
title: Stable oxygen isotope record of Globigerina bulloides of sediment core MINMC06-1
DOI: 10.1594/pangaea.777101
title: (Table T1) Oxygen and carbon isotopic composition of benthic foraminifers and bulk carbonate from two ODP Leg 199 sites

description: High-resolution carbon and oxygen isotope records were produced from 240 analyses of two species of benthic foraminifers and bulk carbonate in sediments from across the Paleocene/Eocene (P/E) boundary in Ocean Drilling Program (ODP) Holes 1220B and 1221C. Although part of the carbon isotope excursion is not recorded in either Hole 1220B or Hole 1221C because of carbonate dissolution, both sites do record a significant part of the main geochemical excursion. The benthic foraminifers from Hole 1220B are believed to provide reliable geochemical records of the magnitude of the P/E excursion as judged by the quality of foraminifer preservation and similarity of the carbon isotope record to that seen at other deep-sea sites. However, anomalously positive values in the benthic d18O record in sediments from Hole 1221C and bulk carbonate in sediments from Hole 1220B indicate that diagenesis masks the primary isotopic signature in this part of the records. The Paleocene-Eocene Thermal Maximum is only observed in the Hole 1220B benthic foraminifer records, with a d18O excursion of -0.65 per mil to -0.85 per mil. The magnitude of the carbon isotope excursion is as much as 0.96 per mil in Hole 1221C and 2.01 per mil in Hole 1220B. Although smaller than at Southern Ocean Site 690 (2.6 per mil), the carbon isotope excursion in Hole 1220B is of similar magnitude to that observed in Deep Sea Drilling Project and ODP Sites 527, 738, and 1051 and the Alamedilla Section in Spain (-2.1 per mil, -1.6 per mil, -1.9 per mil, and -1.7 per mil, respectively).
description: Sediment depth is given in mbsf. Nuttallides truempyi and Cibicidoides spp. were picked from the &gt;250 µm fraction for isotopic analyses.
description: Supplement to: Nunes, Flavia; Norris, Richard D (2005): Data report: High-resolution stable isotope records across the Paleocene/Eocene boundary, ODP Sites 1220 and 1221. In: Wilson, PA; Lyle, M; Firth, JV (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 199, 1-12
DOI: 10.1594/pangaea.626592
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 5e

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.742783
title: Stable carbon and oxygen isotopic compsoition of Globorotalia inflata of IODP Site 306-U1313

description: Old Version, please see new version doi:10.1594/PANGAEA.871177
DOI: 10.1594/pangaea.819248
title: (Table 7) Carbon and oxygen isotope values for foraminifera in Arctic Ocean surface sediment samples
DOI: 10.1594/pangaea.707182
title: (Table 2, Appendix) Stable isotope composition of bulk sediment and foraminifera from ODP Hole 171-1049C