cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.132733
title: Dated age of sediment core NBP98-02-04-2
DOI: 10.1594/pangaea.357048
title: Paleoecological investigation of Hessische Senke at site Md-1
DOI: 10.1594/pangaea.357053
title: Paleoecological investigation of Hessische Senke at site NW2
DOI: 10.1594/pangaea.52417
title: (Table 1) Age determinations on DSDP Hole 64-480
DOI: 10.1594/pangaea.186370
title: Radiocarbon age determinations on sediment core M1048B
DOI: 10.1594/pangaea.357129
title: Paleoecological investigation of Hessische Senke at site MS08
DOI: 10.1594/pangaea.871658
title: (Table 2) Age determination of sediment core IG-KS-11 the Demerara Plateau, North Atlantic

description: The Demerara Plateau, belonging to the passive transform margin of French Guiana, was investigated during the IGUANES cruise in 2013. The objectives of the cruise were to explore the poorly-known surficial sedimentary column overlying thick mass transport deposits as well as to understand the factors controlling recent sedimentation. The presence of numerous bedforms at the seafloor was observed thanks to newly acquired IGUANES bathymetric, high resolution seismic and chirp data, while sediment cores allowed the characterization of the deposits covering the mass transport deposits. Modern oceanographic conditions were determined in situ, using mooring monitoring over a 10-month period. Our data indicate the presence of a Contourite Depositional System along the Demerara Plateau, most likely related to bottom current activity of the North Atlantic Deep Water (NADW). However, at the regional scale, large longitudinal waves parallel the NADW flow. Their shape and orientation seem to be inherited from interactions between bottom currents and paleomorphologies expressed at the top of mass transport deposits. Their evolution is possibly driven by the intensity of bottom current activity that might have changed over time. Overall, this work presents an integrated approach combining seismic and sedimentological evidence to study the processes at the origin of contourite formation in the Demerara Plateau. Other regional factors, such as local slope values and slope instability, also control sedimentation.
description: Supplement to: Tallobre, Cédric; Loncke, Lies; Bassetti, Maria Angela; Giresse, Pierre; Bayon, Germain; Buscail, Rosalyne; de Madron, Xavier Durrieu; Bourrin, François; Vanhaesebroucke, Marc; Sotin, Christine; IGUANES Scientific Party (2016): Description of a contourite depositional system on the Demerara Plateau: Results from geophysical data and sediment cores. Marine Geology, 378, 56-73
DOI: 10.1594/pangaea.186429
title: Radiocarbon age determinations on sediment core N12
DOI: 10.1594/pangaea.794474
title: (Table 1) 40Ar/39Ar geochronology at DSDP Hole 89-462A

description: 40Ar/39Ar geochronological studies were performed on basalts taken from the bottom of Hole 462A. An age of 129.7 ± 4.6 Ma was obtained for two temperature fractions (800 and 1000°C) of Sample 462A-109-1, 106-108 cm. That age is between the age of the oceanic basement, as deduced from the magnetic anomaly data, and the age of interlayered sediment, as deduced from the sparse fossil content.
description: Supplement to: Takigami, Yutaka; Amari, Sachiko; Ozima, Minoru; Moberly, Ralph (1986): 40Ar/39Ar geochronological studies of basalts from Hole 462A, Nauru Basin, Deep Sea Drilling Project Leg 89. In: Moberly, R; Schlanger, SO; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 89, 519-521
DOI: 10.1594/pangaea.186401
title: Radiocarbon age determinations on sediment core LY-71078
DOI: 10.1594/pangaea.357136
title: Paleoecological investigation of Hessische Senke at site Rau-2
DOI: 10.1594/pangaea.710996
title: (Table 1) Th and U isotope ratios of sediments from ODP Site 166-1009

description: U and Th blanks are &lt;1‰ of the measured sample and are corrected for. Raw ages and delta234U values are adjusted to account for initial 230Th to give the corrected numbers in the final two columns. Errors are 2 sigma and are propagated through the age calculation. All calculations have used the half-lives measured in Cheng et al.(2000, doi:10.1016/S0009-2541(99)00157-6)
DOI: 10.1594/pangaea.50602
title: Geochemistry and radionuclides of sediment core PS1170-3
DOI: 10.1594/pangaea.830680
title: (Table 1) Age determination of sediment cores HLY02-02-51 and HLY02-02-57

description: Measured on Neogloboquadrina pachyderma sinistral.
DOI: 10.1594/pangaea.890314
title: Age determinations of Branddam East Pan sediment sequence (ǁKaras Region, Namibia) by 14C dating of TOC bulk samples

description: 14C Age determinations have been done at sediment samples (bulk TOC) from a drill core and a pit at Branddam East Pan (Namibia) during the GeoArchives Campains (Project Spaces).Dating laboratory: Poznan Radiocarbon Laboratory, Poland (Dr. Tomasz Goslar)
DOI: 10.1594/pangaea.186338
title: Radiocarbon age determinations on sediment core V024-001
DOI: 10.1594/pangaea.842480
title: (Table 2) Age control points and sedimentation rates for sediment cores of the eastern edge of Shikoku Basin

description: Geochemical analyses were performed on three cores of hemipelagic sediment from the northwest Pacific Ocean (eastern edge of Shikoku Basin) dating from the last interglacial and glacial periods. The objective of this work is to delineate the relations between excess sedimentary barium [Ba(ex)] content and biogenic opal, carbonate, and organic carbon contents. Calculated Ba(ex) values show variable degrees of correlation with biogenic sediment fractions. The mass accumulation rate (MAR) of Ba(ex) covaries with the MARs of biogenic fractions, and in particular, with the MAR of biogenic carbonate (r**2 = 0.68) and TOC (R**2 = 0.50). Variable relations between barium and biogenic fractions in hemipelagic sediment provide detailed insight into the behavior of sedimentary barium. It appears that a significant proportion of the barium is affiliated with the carbonate fractions. Based on this strong correlation, carbonate dissolution rates of the last glacial to interglacial periods are estimated. Assuming that the MARs of carbonate and Ba(ex) covary, variation of the Ba/Ca ratio in sediments reflects the extent of postdepositional carbonate dissolution. The record of sedimentary Ba/Ca ratios exhibits striking difference between sediment of the glacial and interglacial periods, with a higher positive correlation during glacial intervals and a lower correlation during interglacial intervals; this pattern is the result of enhanced carbonate dissolution during interglacial times. Sedimentary Ba/Ca ratios may, therefore, be a useful tool for estimating the relative extent of carbonate dissolution. Ba(ex) curves and patterns in sedimentary Ba/Ca ratios resemble the established Pacific carbonate dissolution record (i.e., enhanced dissolution during interglacial times and reduced dissolution during glacial times) as suggested by previous studies. Variations in sedimentary Ba/Ca ratios strongly support an interpretation of pronounced glacial-interglacial fluctuation in carbonate dissolution in the northwest Pacific Ocean. An especially pronounced dissolution event is evident at 75 kyr during the transition interval form interglacial to glacial conditions. This suggests that Ba(ex) may be used as a proxy for evaluating carbonate dissolution in hemipelagic settings, but further study of the association between barium content and carbonate dissolution will be required to confirm this.
description: Supplement to: Hyun, Sangmin; Han, Sang-Joon; Taira, Asahiko (2002): Barium in hemipelagic sediment of the northwest Pacific: Coupling with biogenic carbonate. Paleoceanography, 17(4), 1066
DOI: 10.1594/pangaea.132737
title: Dated age of sediment core NBP98-02-05-20
DOI: 10.1594/pangaea.820985
title: (Table S1) Age determination of sediment core MD02-2505

description: Fine-scale, paired Mg/Ca-d18O profiles (Globigerinoides ruber white, sensu lato) from the San Lázaro Basin (SLB) at 25°N in the Northeast Pacific reveal a transition from a predominant presence of tropical/subtropical waters during the last glacial termination (T1) to an increasing influence of fresh and cold California Current waters toward the Holocene. Changing atmospheric circulation patterns over the Northeast Pacific in step with the demise of the Northern Hemisphere ice sheets and/or with a shift from El Niño- to La Niña-like conditions toward the Holocene are prime candidates to explain this water mass change. d18OSW-IVC increases of ~0.5-0.7 per mil during the Younger Dryas (YD) and Heinrich stadial 1 (HS1) at the SLB are observed in a number of d18OSW-IVC records from the tropical Pacific, more directly influenced by changes in the position of the Intertropical Convergence Zone (ITCZ). Conditioning by ITCZ migration of the tropical Pacific Ocean towards salinity increase during YD and HS1, and the subsequent advection of those water masses as far north as 25°N likely accounted for the reconstructed hydrographical changes at the SLB. A larger influence of tropical water masses as far north as 25°N plausibly contributed to changes in the atmospheric moisture transports to western North America and affected the regional hydrological cycle across T1. Finally, the fine-scale resolution of our d18OSW-IVC record allows pinpointing a shift from relative salty to fresh surface conditions at ~16.2 ka, signaling that the two-phase structure of HS1 is plausibly a ubiquitous feature of the northern tropical to extratropical ocean-atmosphere dynamics.
description: Supplement to: Rodriguez-Sanz, Laura; Mortyn, P Graham; Herguera, Juan-Carlos; Zahn, Rainer (2013): Hydrographic changes in the tropical and extratropical Pacific during the last deglaciation. Paleoceanography, 28(3), 529-538
DOI: 10.1594/pangaea.56011
title: Age determination of sediment core IK9373-10 (Table 1)
DOI: 10.1594/pangaea.917685
title: Age determination of fossil microatolls from the Spermonde Archipelago
DOI: 10.1594/pangaea.770268
title: Table 2 Radiocarbon measurements obtained on bulk organic carbon collected at seven different depths along core Co1202

description: Radiocarbon ages and calibrated ages, inferred using CalPal-2007online and the CalPal2007_HULU calibration curve (Danzeglocke et al., 2008), are given for the alkali residue (AR), the humic acid fraction (HA) and/or the corrected (corr.) HA fraction.
DOI: 10.1594/pangaea.107737
title: Radionuclides in sediment core GIK23259-3
DOI: 10.1594/pangaea.399070
title: Age determinations on sediment core L-66
DOI: 10.1594/pangaea.186324
title: Radiocarbon age determinations on sediment core YALOC69-106
DOI: 10.1594/pangaea.833682
title: (Table 2) Age determination of sediment cores from the Portuguese Margin

description: We demonstrate that changes in the behavior of the Mediterranean Outflow Water (MOW) prior to and through the last deglaciation played an important role in promoting Meridional Overturning Circulation (MOC). Estimation of past MOW salt and heat fluxes indicates that they gradually increased through the last deglaciation. Between 17.5 and 14.6 thousand years ago (ka B.P., where B.P. references year 1950), net evaporation from the Mediterranean exported sufficient fresh water from the North Atlantic catchment to cause an average salinity increase of 0.5 psu throughout the upper 2000 m of the entire North Atlantic to the north of 25°N. Combined with rapid intensification and shoaling of the MOW plume, which we identify around 15-14.5 ka B.P., this deglacial MOW-related salt accumulation preconditioned the North Atlantic for abrupt resumption of the MOC at 14.6 ka B.P.
description: Supplement to: Rogerson, Mike; Rohling, Eelco J; Weaver, Philip PE (2006): Promotion of meridional overturning by Mediterranean-derived salt during the last deglaciation. Paleoceanography, 21(4), PA4101
DOI: 10.1594/pangaea.357145
title: Paleoecological investigation of Hessische Senke at site Se-12a
DOI: 10.1594/pangaea.846603
title: (Table 1) Age determination of sediment core MD97-2141

description: The primary productivity dynamics of the last 200,000 years in the Sulu Sea was reconstructed using the abundance of the coccolithophore Florisphaera profunda in the IMAGES MD97-2141 core. We find that primary productivity was enhanced during glacial periods, which we suggest is due to a stronger East Asian winter monsoon. During the last 80 kyr, eight significant increases in primary productivity (PP) in the Sulu Sea are similar to East Asian winter monsoon changes recorded in Chinese loess. The PP maxima are not linked with Heinrich events (HE) in the North Atlantic, although four PP peaks are synchronous with HE. The PP oscillations have frequencies near those of the Dansgaard-Oeschger cycles in Northern Hemisphere ice records and indicate a teleconnection of the East Asian winter monsoon with Greenland climate. In this Sulu Sea record the East Asian winter monsoon oscillates with periodicities of ~6, 4.2-3.4, 2.3, and 1.5 kyr. In particular, the 1.5 kyr cycle exhibits a strong and pervasive signal from stage 6 to the Holocene without any ice volume modulation. This stationarity suggests that the 1.5 kyr cycle is not driven by some high-latitude forcing.
description: Calendar ages have been calculated using a 400 year reservoir correction and applying the Stuiver and Braziunas (1993) calibration curve for samples younger than 20,000 calendar years in age and a U/Th calibration curve for the samples older than 20,000 calendar years (Bard et al., 2993).
description: Supplement to: de Garidel-Thoron, Thibault; Beaufort, Luc; Linsley, Braddock K; Dannenmann, Stefanie (2001): Millennial-scale dynamics of the east Asian winter monsoon during the last 200,000 years. Paleoceanography, 16(5), 491-502
DOI: 10.1594/pangaea.186371
title: Radiocarbon age determinations on sediment core 326-36
DOI: 10.1594/pangaea.742750
title: (Table 1) Age-depth model of ODP Site 167-1014

description: Sediment depth is the composite depth (mcd), 14C measured on bulk organic matter (BOM). Isotopic events are also used for age model, see Hendy and Kennet (2000) dataset: doi:10.1594/PANGAEA.742764.
DOI: 10.1594/pangaea.888857
title: Age determination of sediment core KHARTYM, Man'inskii Khartym, Russia

description: This dataset was archived on 2018-04-23 from the EPD database (http://www.europeanpollendatabase.net).
DOI: 10.1594/pangaea.830724
title: (Table 1) Age determination of sediment cores CH07-98-22 and KNR140-2-59

description: Western subtropical North Atlantic oceanic and atmospheric circulations connect tropical and subpolar climates. Variations in these circulations can generate regional climate anomalies that are not reflected in Northern Hemisphere averages. Assessing the significance of anthropogenic climate change at regional scales requires proxy records that allow recent trends to be interpreted in the context of long-term regional variability. We present reconstructions of Gulf Stream sea surface temperature (SST) and hydrographic variability during the past two millennia based on the magnesium/calcium ratio and oxygen isotopic composition of planktic foraminifera preserved in two western subtropical North Atlantic sediment cores. Reconstructed SST suggests low-frequency variability of ~1°C during an interval that includes the Medieval Climate Anomaly (MCA) and the Little Ice Age (LIA). A warm interval near 1250 A.D. is distinct from regional and hemispheric temperature, possibly reflecting regional variations in ocean-atmosphere heat flux associated with changes in atmospheric circulation (e.g., the North Atlantic Oscillation) or the Atlantic Meridional Overturning Circulation. Seawater d18O, which is marked by a fresher MCA and a more saline LIA, covaries with meridional migrations of the Atlantic Intertropical Convergence Zone. The northward advection of tropical salinity anomalies by mean surface currents provides a plausible mechanism linking Carolina Slope and tropical Atlantic hydrology.
description: Supplement to: Saenger, Casey; Came, Rosemarie E; Oppo, Delia W; Keigwin, Lloyd D; Cohen, Anne L (2011): Regional climate variability in the western subtropical North Atlantic during the past two millennia. Paleoceanography, 26(2), PA2206
DOI: 10.1594/pangaea.357121
title: Paleoecological investigation of Hessische Senke at site Md-1
DOI: 10.1594/pangaea.68877
title: (Table 1) Age determination of sediment core SO82_2-2
DOI: 10.1594/pangaea.742493
title: (Table 1) Age determination of ODP Leg 166 holes

description: Thick, late Quaternary sediment sections were recovered at several sites on the leeward slope of Great Bahama Bank during Leg 166 of the Ocean Drilling Program. These sections have paleoceanographic records with potentially high temporal resolution. To make an initial assessment of the records corresponding to the Holocene highstand of sea level, we have identified and dated the sediments from the four upper slope sites (1004, 1005, 1008, and 1009) that were deposited during the period of time which spans the last glaciation through the Holocene. Age identifications are based upon the abundances of the Globorotalia menardii complex of planktonic foraminifera, the stable oxygen isotopic ratios of bulk sediment and the planktonic foraminifera Globogerinoides ruber, and AMS C-14 dating of bulk sediment. Comparison of these data with the sediment lithologic and geoacoustic properties shows that consistent stratigraphic relationships exist at each site: The uppermost interval of aragonite-rich sediments corresponds to the Holocene highstand of sea level (i.e. oxygen isotope stage 1) and these sediments are underlain by a relatively thin interval of aragonite-poor, partially lithified sediments which corresponds to the last glaciation when sea level was significantly lower than today (i.e. oxygen isotope stages 2-4). The Leg 166 upper slope sites possess carbonate accumulation and paleoceanographic proxy records with very high temporal resolution, with Sites 1004, 1008, and 1009 appearing to have the greatest stratigraphic integrity. Comparison of core and high-resolution seismic profile data establishes the Holocene nature of the uppermost seismic unit in the stratigraphic package of the western slope of Great Bahama Bank.
description: Supplement to: Slowey, Niall C; Wilber, R Jude; Haddad, Geoffrey A; Henderson, Gideon M (2002): Glacial-to-Holocene sedimentation on the western slope of Great Bahama Bank. Marine Geology, 185(1-2), 165-176
DOI: 10.1594/pangaea.773653
title: (Table T1) Age determination of seven ODP Leg 201 sites

description: As part of a wider paleoclimate and paleoceanographic study of Holocene-upper Pleistocene laminated sediments from the eastern equatorial Pacific and Peru continental margin, we completed 32 accelerator mass spectrometry (AMS) 14C dates from cores recovered during Ocean Drilling Program (ODP) Leg 201. Sample preparation and measurement were carried out at the ANTARES AMS facility, Australian Nuclear Science and Technology Organisation (ANSTO), in Sydney, Australia (Lawson et al., 2000, doi:10.1016/S0168-583X(00)00276-7; Fink et al., 2004, doi:10.1016/j.nimb.2004.04.025). Although the sediments are predominantly diatomaceous oozes (D'Hondt, Jørgensen, Miller, et al., 2003, doi:10.2973/odp.proc.ir.201.2003), they contain sufficient inorganic (e.g., foraminifer tests and nannofossil plates) and organic (Meister et al., 2005, doi:10.2973/odp.proc.sr.201.105.2005) carbon to allow 14C dating. These dates permitted us to reconstruct a history of sediment accumulation over the past 20 k.y., particularly on the Peru continental margin. In this report we present 14C AMS dates and other pertinent data from cores from Sites 1227, 1228, and 1229 collected during Leg 201 at the Peru continental margin.
description: Sediment depth is given in mbsf. The local marine reservoir correction used was Delta R = 238 ± 49 (Marine Reservoir Correction Database [MRCD; radiocarbon.pa.qub.ac.uk/marine/; Reimer and Reimer, 2001, supplementary material at www.calib.org] Site 108 [Taylor and Berger, 1967]) for Sites 1227-1231 and Delta R = 58 ± 47 (MRCD Site 107) for Sites 1225 and 1226.
description: Supplement to: Skilbeck, C Gregory; Fink, David (2006): Data report: Radiocarbon dating and sedimentation rates for Holocene–upper Pleistocene sediments, eastern equatorial Pacific and Peru continental margin. In: Jørgensen, BB; D'Hondt, SL; Miller, DJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 201, 1-15
DOI: 10.1594/pangaea.831402
title: (Table S4a) Concentrations of phosphorus components for ODP Site 119-738

description: DEPTH, sediment/rock [m] is given in mbsf.
DOI: 10.1594/pangaea.832435
title: (Table 1) Age determination of sediment cores OCE205-2-100GGGC and KNR166-2-31

description: Benthic foraminiferal Cd/Ca from a Florida Current sediment core documents the history of the northward penetration of southern source waters within the surface return flow of the Atlantic meridional overturning circulation (AMOC). Cd seawater estimates (CdW) indicate that intermediate-depth southern source waters crossed the equator and contributed to the Florida Current during the Bølling-Allerød warm period of the last deglaciation, consistent with evidence of only a modest AMOC reduction compared to today. The CdW estimates also provide the first paleoceanographic evidence of a reduction in the influence of intermediate-depth southern source waters within the Florida Current during the Younger Dryas, a deglacial cold event characterized by a weak North Atlantic AMOC. Our results reveal a close correspondence between the northward penetration of intermediate-depth southern source waters and the influence of North Atlantic Deep Water, suggesting a possible link between intermediate-depth southern source waters and the strength of the Atlantic AMOC.
description: Accelerator mass spectrometer (AMS) radiocarbon dates were converted to calendar age using the online calibration program Calib 5.02 (Stuiver and Reimer, 1993), the Marine04 calibration data set (Hughen et al., 2004), and a reservoir correction of 400 years.
description: Supplement to: Came, Rosemarie E; Oppo, Delia W; Curry, William B; Lynch-Stieglitz, Jean (2008): Deglacial variability in the surface return flow of the Atlantic meridional overturning circulation. Paleoceanography, 23(1), PA1217
DOI: 10.1594/pangaea.743344
title: Beryllium-10, mineralogy and grain size distribution of DSDP Hole 68-502B (Table 1)

description: We present a high-resolution 10Be profile from deep sea sediments (sampled from Hole 502B in the Caribbean sea) that strongly resembles the 10Be record in ice core profiles, particularly the Vostok core from Antarctica. This high-resolution profile revealed occurrences of enhanced 10Be concentrations at about 23-24, 37-39 and 60-65 ka. The excellent match between these peaks appearing in a georeservoir profile other than in polar ice, strengthens the implications that can be inferred from 10Be and provide global markers for chronological correlation of climatic events. The position at low latitude of the studied sediment section is, unlike the case with the high latitude polar regions, excellent for exposing causes of modulation in 10Be production. We interpret the source of the pattern and enhancements, particularly the 37-39 ka peak, of 10Be to be global and do not strictly relate to climatic conditions and/or production rates specific to the polar regions.
description: Supplement to: Aldahan, Ala; Possnert, Göran (1998): A high-resolution 10Be profile from deep sea sediment covering the last 70 ka: indication for globally synchronized environmental events. Quaternary Science Reviews, 17(11), 1023-1032