cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.962429
title: X-ray fluorescence inorganic geochemistry measurements of Site PI-02 from Lake Petén Itzá, Guatemala
DOI: 10.1594/pangaea.143696
title: Sedimentology and analysis of organic matter in core PS1906-1
DOI: 10.1594/pangaea.205715
title: (Table 4) Lipid biomarker concentrations from surface sediments, Southeast Atlantic
DOI: 10.1594/pangaea.206115
title: Biomarkers of sediment core CD61_198#6 (LIPSED2)

description: Bristol Chemistry. Authorship was originally taken from the JGOFS CDs (Lowry & BODC) and was changed by request of the BODC.
DOI: 10.1594/pangaea.227626
title: Sedimentology and geochemistry of core PS2123-2
DOI: 10.1594/pangaea.915600
title: Rock-Eval pyrolysis results for samples from sediment core MD13-3462G
DOI: 10.1594/pangaea.55099
title: Figure 2 and 3. Sedimentology of core PS2138-1
DOI: 10.1594/pangaea.143698
title: Sedimentology and analysis of organic matter in core GIK23065-3
DOI: 10.1594/pangaea.753641
title: (Table 1) Organic geochemistry of sediments from ODP Hole 112-680A
DOI: 10.1594/pangaea.948132
title: Fatty acid concentrations of sediment core HH14-897-GC-MF

description: Fatty acid concentrations were extracted and purified with wet chemical methods (details in publication) and quantified by an internal standard (19-MA) using a GC-FID.
DOI: 10.1594/pangaea.847781
title: (Table 3) Long-Chain n-Alkane and Lignin concentration of samples of sediment cores PS2170-4 and PS2185-4
DOI: 10.1594/pangaea.960177
title: Stable carbon and hydrogen isotopic compositions of palmitic acid in surface sediment from Baffin Bay and the Labrador Sea

description: Palmitic acid (PA) is ubiquitous in the biosphere and its hydrogen isotopic composition (δ2HPA) was proposed as a potential paleoenvironmental proxy for salinity, with δ2HPA values increasing with salinity. In this study, we analyzed 40 surface sediment samples from Baffin Bay and the Labrador Sea to examine the isotopic composition of PA in relation to local environmental variables, including salinity. In contrast to expectations, our results show a negative relationship between the δ2HPA and sea-surface salinity, raising questions about its pertinence/usefulness as a salinity proxy. Instead, our results suggest that the relative abundance of distinct organisms that employ different metabolisms is key in determining the hydrogen isotopic fractionations in PA. Whereas we show that PA is mostly produced through photoautotrophic metabolisms by diatoms and dinoflagellates, varying contributions from heterotrophic metabolisms may obscure the stable isotope composition of PA. Surprisingly, we found no correlation between the stable carbon isotopic composition of the sedimentary organic matter (δ13Corg) and palmitic acid (δ13CPA), implying major differences in either the dominant organisms producing sedimentary PA or in carbon isotope fractionation during lipid biosynthesis. We also found that the presence of extended sea-ice cover leads to enriched carbon and hydrogen isotopic compositions in PA. These enriched values suggest heterotrophic biodegradation in the water column and/or in the sediment as well as an increase in grazing activities. We propose that sea-ice cover and surface water oxygenation modulate the relative impact of phototrophic and heterotrophic metabolisms, and therefore the isotopic composition of marine sedimentary PA.
DOI: 10.1594/pangaea.908090
title: Chlorophyll a and phaeopigments at the sediment-water interface in the Canadian Arctic in 2008 and 2009
DOI: 10.1594/pangaea.810431
title: (Table 7) Accumulation of fish teeth in Maestrichtian to middle Eocene sediments at DSDP Site 74-527
DOI: 10.1594/pangaea.143697
title: Sedimentology and analysis of organic matter in core GIK23065-2
DOI: 10.1594/pangaea.807144
title: (Table 6) Hydrogen and oxygen indexes, hydrocarbon yields and C/N ratio at DSDP Hole 81-555
DOI: 10.1594/pangaea.143702
title: Sedimentology and analysis of organic matter in core GIK23342-3
DOI: 10.1594/pangaea.55692
title: Pollen analysis and dinoflagellate cyst of sediment core IOW211660-6
DOI: 10.1594/pangaea.792624
title: (Table 2) Amino acid concentrations in Karelian shungite samples from the Onego lake area
DOI: 10.1594/pangaea.780374
title: (Table 3-2) Rates of carbon dioxide assimilation, methane formation, and methane oxidation in bottom sediments of Poligon II near the Congo River mouth
DOI: 10.1594/pangaea.762035
title: Decadal-to-centennial scale variations during the Holocene reconstructed from sediment core D13902

description: Sea surface temperature (SST), marine productivity, and fluvial input have been reconstructed for the last 11.5 calendar (cal) ka B.P. using a high-resolution study of C37 alkenones, coccolithophores, iron content, and higher plant n-alkanes and n-alkan-1-ols in sedimentary sequences from the inner shelf off the Tagus River Estuary in the Portuguese Margin. The SST record is marked by a continuous decrease from 19C, at 10.5 and 7 ka, to 15C at present. This trend is interrupted by a fall from 18C during the Roman and Medieval Warm Periods to 16C in the Little Ice Age. River input was very low in the early Holocene but increased in the last 3 cal ka B.P. in association with an intensification of agriculture and deforestation and possibly the onset of the North Atlantic Oscillation/Atlantic Multidecadal Oscillation modes of variability. River influence must have reinforced the marine cooling trend relative to the lower amplitude in similar latitude sites of the eastern Atlantic. The total concentration of alkenones reflects river-induced productivity, being low in the early Holocene but increasing as river input became more important. Rapid cooling, of 1–2C occurring in 250 years, is observed at 11.1, 10.6, 8.2, 6.9, and 5.4 cal ka B.P. The estimated age of these events matches the ages of equivalent episodes common in the NE Atlantic– Mediterranean region. This synchronicity reveals a common widespread climate feature, which considering the twentieth century analog between colder SSTs and negative North Atlantic Oscillation (NAO), is likely to reflect periods of strong negative NAO.
description: Supplement to: Rodrigues, Teresa; Grimalt, Joan O; Abrantes, Fatima F; Flores, José-Abel; Lebreiro, Susana Martin (2009): Holocene interdependences of changes in sea surface temperature, productivity, and fluvial inputs in the Iberian continental shelf (Tagus mud patch). Geochemistry, Geophysics, Geosystems, 10(7), Q07U06
DOI: 10.1594/pangaea.777527
title: Concentration of pollen in soil samples from the A.D. 79 level at station Pompeii
DOI: 10.1594/pangaea.757130
title: Tab.3: Bacterial communities of soil profiles
DOI: 10.1594/pangaea.743926
title: (Table 1) Bacterial cell numbers, biovolumes, and biomasses per g sediment dry weight in the Northwest African upwelling region

description: Positions are uncertain, digized from map
DOI: 10.1594/pangaea.385557
title: Nucleic acids in sediment core 13368-004
DOI: 10.1594/pangaea.855870
title: Biogeochemical measurements of sediments collected at station MSM15/1_513-1 in the Black Sea during the MSM15/1 cruise in 2010
DOI: 10.1594/pangaea.746793
title: (Table 3a) Methane concentrations, its oxidation rate, Eh, and organic carbon contents in bottom sediments of the Kara Sea at Station DM49-4398-1b
DOI: 10.1594/pangaea.760390
title: (Table 1) Thermovaporization hydrocarbon yield as function of temperature of an ODP Hole 121-757B sample

description: Hydrocarbon yield expressed in nanograms per gram (ppb) of dry-weight sediment.
DOI: 10.1594/pangaea.746794
title: (Table 3a) Methane concentrations, its oxidation rate, Eh, and organic carbon contents in bottom sediments of the Kara Sea at Station DM49-4399-1b
DOI: 10.1594/pangaea.742109
title: (Table 1) Organic C, N, reduced S and amino acid contents in bottom sediments of the Black Sea
DOI: 10.1594/pangaea.838106
title: Pollen profile CUTHILL2, United Kingdom

description: This dataset was archived on 2014-11-03 from the EPD database (http://www.europeanpollendatabase.net).
DOI: 10.1594/pangaea.206127
title: Biomarkers of sediment core BOFS12055#3 (LSANOL)

description: Bristol Chemistry. Authorship was originally taken from the JGOFS CDs (Lowry & BODC) and was changed by request of the BODC.
DOI: 10.1594/pangaea.760917
title: (Table 2) Organic geochemistry of ODP Site 123-765
DOI: 10.1594/pangaea.867727
title: Alkenone concentration and accumulation rate in sediment of ODP Hole 104-642B

description: To be submitted by the author.
description: Supplement to: Bachem, Paul E; Risebrobakken, Bjørg; McClymont, Erin L (in prep.): Export productivity in the Pliocene Norwegian Sea.
DOI: 10.1594/pangaea.717355
title: Nucleic acids in sediment core 54301-002
DOI: 10.1594/pangaea.717356
title: Nucleic acids in sediment core 54301-019
DOI: 10.1594/pangaea.720989
title: Pigments of sediment core 12930-082
DOI: 10.1594/pangaea.720992
title: Pigments of sediment core 13077-069, subcore 2
DOI: 10.1594/pangaea.922212
title: Palynological abundance data from ODP Hole 189-1170D

description: Pollen, spo
DOI: 10.1594/pangaea.742495
title: Figure 4. Geochemistry on sediment core MD04-2879

description: Anaerobic ammonium oxidation (anammox) has been recognized as an important process converting fixed nitrogen to N2 in many marine environments, thereby having a major impact on the present-day marine nitrogen cycle. However, essentially nothing is known about the importance of anammox in past marine nitrogen cycles. In this study, we analyzed the distribution of fossil ladderane lipids, derived from bacteria performing anammox, in a sediment core from the northern Arabian Sea. Concentrations of ladderane lipids varied between 0.3 and 5.3 ng/g sediment during the past 140 ka, with high values observed during the Holocene, intervals during the last glacial, and during the penultimate interglacial. Maxima in ladderane lipid abundances correlate with high total organic carbon (4-6%) and elevated d15N (&gt;8 per mil) values. Anammox activity, therefore, seems enhanced during periods characterized by an intense oxygen minimum zone (OMZ). Low concentrations of ladderanes (&lt;0.5 ng/g sediment), indicating low-anammox activity, coincide with periods during which the OMZ was severely diminished. Since anammox activity covaried with OMZ intensity, it may play an important role in the loss of fixed inorganic nitrogen from the global ocean on glacial-interglacial timescales, which was so far attributed only to heterotrophic denitrification.
DOI: 10.1594/pangaea.921696
title: Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (flight ANT_1312282802)

description: Missing data: -9.0
DOI: 10.1594/pangaea.830342
title: Pigments in sediments at Panarea shallow CO2 seeps during cruise ECO2-3
DOI: 10.1594/pangaea.921699
title: Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (flight ANT_1312283101)

description: Missing data: -9.0
DOI: 10.1594/pangaea.921706
title: Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (flight ANT_1401054002)

description: Missing data: -9.0
DOI: 10.1594/pangaea.921698
title: Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (flight ANT_1312283001)

description: Missing data: -9.0
DOI: 10.1594/pangaea.921700
title: Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (flight ANT_1312283201)

description: Missing data: -9.0
DOI: 10.1594/pangaea.921701
title: Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (flight ANT_1312293301)

description: Missing data: -9.0
DOI: 10.1594/pangaea.921702
title: Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (flight ANT_1312313502)

description: Missing data: -9.0
DOI: 10.1594/pangaea.921703
title: Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (flight ANT_1401023602)

description: Missing data: -9.0
DOI: 10.1594/pangaea.921704
title: Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (flight ANT_1401023702)

description: Missing data: -9.0
DOI: 10.1594/pangaea.921697
title: Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (flight ANT_1312282902)

description: Missing data: -9.0
DOI: 10.1594/pangaea.811009
title: Raw counts of sporomorphs in the Eocene interval of IODP Hole 318-U1356A
DOI: 10.1594/pangaea.770141
title: (Table 1) Organic geochemical results for the samples from DSDP Hole 41-368

description: DSDP site 41–368 in the eastern Atlantic represents an unusual locality, where the behaviour of a short column of organic-rich shale can be studied in relation to the steep thermal gradient imposed by basaltic intrusions. This study indicates that the dominant effects on the measured parameters of the organic matter were thermal and that compositional variations in the original matter were minor in comparison.
description: Sediment depth is given in mbsf. Depths are calculated upwards from the core catcher, these are probably more representative of the true (absolute) depths than the DSDP convention of measuring downwards from the top of each core.
description: Supplement to: Simoneit, Bernd R T; Brenner, Shmuel; Peters, K E; Kaplan, Isaac R (1978): Thermal alteration of Cretaceous black shale by basaltic intrusions in the Eastern Atlantic. Nature, 273(5663), 501-504
DOI: 10.1594/pangaea.810255
title: (Table 1) Low-molecular-weight hydrocarbon concentrations, organic carbon contents, and Rock-Eval pyrolysis hydrogen indices at DSDP Hole 75-530A
DOI: 10.1594/pangaea.667519
title: (Table 2) Chemical evaluation of sapropels from ODP Site 107-655A in the Tyrrhenian Sea

description: Depth gives the mean depth (mbsf) of sapropel. Sapropels in core intervals 107-655A-2H-4,50-80. 107-655A-3H-1,60-90. 107-655A-3H-4,63-78
DOI: 10.1594/pangaea.798099
title: (Table 1) Low-molecular-weight hydrocarbon concentrations and organic carbon contents at DSDP Site 89-585

description: Sediment depth is given in mbsf. Empty cells indicate concentration below or near detection limit. ?0 indicates value uncertain due to peak overlapping. 2-Methylpentane also measured, but it was below detection limit.
DOI: 10.1594/pangaea.760918
title: (Table 3) Organic geochemistry of ODP Hole 123-766A
DOI: 10.1594/pangaea.789168
title: (Table 1) Geochemistry, hydrogen and oxygen index, phytane, pyrite and ash free of pyrite of sediments at DSDP Hole 93-603B
DOI: 10.1594/pangaea.720988
title: Pigments of sediment core 12930-066
DOI: 10.1594/pangaea.720993
title: Pigments of sediment core 13077-090, subcore 1
DOI: 10.1594/pangaea.720998
title: Pigments of sediment core PLG123/13-2
DOI: 10.1594/pangaea.720994
title: Pigments of sediment core 13200-033, subcore 1
DOI: 10.1594/pangaea.855867
title: Biogeochemical measurements of sediments collected at station MSM15/1_466-1 in the Black Sea during the MSM15/1 cruise in 2010
DOI: 10.1594/pangaea.217798
title: Biogeochemistry in surface sediment during PELAGIA cruise PLG95A
DOI: 10.1594/pangaea.728973
title: Figure 2: IP25 measurements and accumulation rates of sediment core PS2837-5

description: Sea ice is a critical component of the climate system: variations in sea-ice cover affect the albedo of polar regions, and also the rate of deepwater formation. Changes in the sea-ice cover of the North Atlantic Ocean are thought to have been related to abrupt climate changes throughout the last glacial termination, but reconstructions of sea-ice conditions are rare. Here we use the sedimentary abundance of the IP25 and brassicasterol biomarkers, produced by sea-ice-associated diatoms and open-water phytoplankton, respectively, to generate a record of sea-ice conditions in the northernmost Atlantic Ocean for the past 30,000 years. Our reconstruction shows that a stationary margin between sea-ice cover and the open ocean existed during the Last Glacial, although perennial sea-ice cover prevailed for most of the Last Glacial Maximum. An early warming about 14,000 years ago was associated with ice-free conditions; however, seasonal sea ice was present throughout the Holocene. We find temporal links between our record of sea ice and reconstructions of the amount of relatively warm Atlantic water advected into the Nordic Seas. We therefore conclude that changes in sea-ice conditions are linked to regional and global climate anomalies and oceanographic circulation in the North Atlantic.
description: For further details on the age model of the core and specific organic geochemical data (brassicasterol and total organic carbon content) we refer to the data set entry by Birgel and Hass, 2004, doi:10.1594/PANGAEA.728974. See doi:10.1594/PANGAEA.56094 for the GISP2 oxygen isotope data (Grootes et al, 1993).
description: Supplement to: Müller, Juliane; Massé, Guillaume; Stein, Ruediger; Belt, Simon T (2009): Variability of sea-ice conditions in the Fram Strait over the past 30,000 years. Nature Geoscience, 2, 772-227
DOI: 10.1594/pangaea.855730
title: Biogeochemical measurements of sediments collected at station MSM15/1_459-1 in the Black Sea during the MSM15/1 cruise in 2010
DOI: 10.1594/pangaea.855729
title: Biogeochemical measurements of sediments collected at station MSM15/1_448-1 in the Black Sea during the MSM15/1 cruise in 2010
DOI: 10.1594/pangaea.726447
title: (Table 5) Organic carbon analysis of sediments from ODP Hole 113-694C
DOI: 10.1594/pangaea.726448
title: (Table 5) Organic carbon analysis of sediments from ODP Hole 113-695A
DOI: 10.1594/pangaea.810192
title: (Table 3A) Enrichment factors for black shale-green shale pairs at DSDP Hole 75-530A

description: Sediment depth is given in mbsf. "Green" shale = nonblack shale = green shale or gray shale.
DOI: 10.1594/pangaea.810193
title: (Table 3B) Enrichment factors for gray shale-green shale pairs at DSDP Hole 75-530A
DOI: 10.1594/pangaea.819339
title: (Table 2) Approximate concentrations of some molecular markers of sediments from DSDP Leg 63 Holes

description: Based on dry sediment weight, empty cells mean no data.
DOI: 10.1594/pangaea.810170
title: (Table 1) Carbon, and pyrolysis at DSDP Core 75-530A-101
DOI: 10.1594/pangaea.54591
title: Figure 3. Geochemistry of sediment core PS2138-2
DOI: 10.1594/pangaea.810256
title: (Table 2) Low-molecular-weight hydrocarbon concentrations and organic carbon contents at DSDP Hole 75-532
DOI: 10.1594/pangaea.708688
title: (Table 3) Concentrations (in dry sediments) of bound alkenones, fatty acids, and alcohols in the oxidized and unoxidized turbidites from ODP Hole 157-952A
DOI: 10.1594/pangaea.884792
title: IP25 biomarker in sediment core PS92/039-2
DOI: 10.1594/pangaea.217792
title: Biogeochemistry of sediment core DI216_MC4
DOI: 10.1594/pangaea.57438
title: Analysis of organic material in sediment core PL94-64 (Table 4)
DOI: 10.1594/pangaea.57445
title: Nitrogeneous organic matter in surface sediments in the estuaries of the Ob and Yenisei rivers, tab 1
DOI: 10.1594/pangaea.808789
title: (Table 5) Pyrolysis assay and δ¹³C of organic matter at DSDP Hole 78-541
DOI: 10.1594/pangaea.143706
title: Sedimentology and analysis of organic matter in core PS1911-1
DOI: 10.1594/pangaea.903387
title: (Table 4) Chlorophyll a concentrations in Kaipara, Tauranga, and Manukau Harbours, New Zealand (2012)
DOI: 10.1594/pangaea.217793
title: Biogeochemistry of sediment core DI216_MC7
DOI: 10.1594/pangaea.816766
title: Biochemistry measured on water bottle samples during Fogo Isle cruise FL92/2
DOI: 10.1594/pangaea.803121
title: (Table 1) Organic geochemistry of ODP Leg 135 sediment samples
DOI: 10.1594/pangaea.909059
title: Mercury and organic geochemistry of Monte Velo quarry
DOI: 10.1594/pangaea.55693
title: Pollen analysis and dinoflagellate cyst of sediment core IOW211670-7
DOI: 10.1594/pangaea.887831
title: IP25 and Uk'37 proxy record of sediment core SO202/1_07-6
DOI: 10.1594/pangaea.816673
title: Biochemistry measured on water bottle samples during HUDSON cruise HUD92/1
DOI: 10.1594/pangaea.753777
title: Concentrations of beta-carotene, astaxanthin, canthaxanthin, and diatoxanthine of ODP Leg 112 samples (Table 2)

description: The quantitative distribution of carotenoids in sediments of Pleistocene to Miocene age from the Peru upwelling area is reported. Major pigments include beta-carotene, diatoxanthin, caroteno-3,3'-diols from phytoplankton, astaxanthin and canthaxanthin from crustaceans, and spheroidenone from bacteria. beta-carotene epoxides are major consituents, representing transformation products in the degradation of beta-carotene to low molecular weight compounds. The absolute abundance of carotenoids reflects bottom-water oxicity at the time of deposition; highest concentrations of carotenoids were observed in laminated muds deposited within the oxygen-minimum zone, with reduced or negligible concentrations of pigments observed in bioturbated sequences deposited during periods of well-oxygenated bottom water. beta-carotene, the most abundant pigment in recently deposited sediments, slowly degrades through a sequence of transformation reactions initiated by epoxidation. The 4,4' dioxo-carotenoids, which are unable to form 5,6-epoxides, have been preferentially preserved in these sediments.
description: Supplement to: Repeta, Daniel J (1990): Carotenoid diagenesis in Pleistocene to Miocene sediments from the Peru Margin. In: Suess, E; von Huene, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 112, 567-572
DOI: 10.1594/pangaea.786523
title: (Appendix S1) Concentrations of photosynthetic pigments in soils from five sites in northern Victoria Land

description: Concentrations are given per g dry weight and for each encountered peak. #0 = present in trace quantities.
DOI: 10.1594/pangaea.854060
title: Sediment core analysis from METEOR cruise M48/2 in the Benguela Upwelling System off Namibia in August 2000
DOI: 10.1594/pangaea.815177
title: (Table 1) Geology and geochemistry at DSDP Hole 71-511

description: Sediment depth is given in mbsf. Empty cells indicate no data. 71-511-55-5,0-5, 71-511-55-6,49-54, 71-511-58-4,120-125 and 71-511-58-4-CC also investigated but nothing was detected.
DOI: 10.1594/pangaea.760990
title: (Table 2) Content of total, neutral and phospholipids in massive sulfide samples from the Logachev and Broken Spur hydrothermal fields

description: Contents of lipids are given for massive sulfide matter. Phospholipid contents are given in % of their sum.
DOI: 10.1594/pangaea.874353
title: (Supplementary Table 5) Biomarker data of Core PS2138-2 (Time interval 60-140 ka)
DOI: 10.1594/pangaea.874354
title: (Supplementary Table 2) Biomarker data of Core PS2200-5 (Time interval MIS 6 - MIS5)

description: #999 = present
DOI: 10.1594/pangaea.124960
title: Amino acid compositions in sediment core TT013_2S_A