cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.961504
title: MANOP Site H manganese nodules and crusts chemical composition determined by atomic absorption spectrometry (AAS)

description: Manganese nodules and crusts were sampled from box cores collected at the Manganese Nodule Program (MANOP) site H in the Eastern Equatorial Pacific ocean. For majority of site H nodule bottoms have smooth, lustrous patches, whereas nodule tops are generally rough and dull. The top/bottom orientation of each manganese nodule was labeled during curation. Most of the nodutes studied were cut in haIf, and a 3-5 mm layer was scraped from nodule tops and bottoms. The chemical analysis was performed on both top and bottom sides as well as on the whole specimen. Atomic absorption spectrometry (AAS) was used folIowing complete dissolution with HF and aqua regia in teflon bombs.
description: From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.This dataset represents the digitized Table 1, pp. 934 of the related publication.
DOI: 10.1594/pangaea.961505
title: MANOP Site H manganese nodules and crusts chemical composition determined by instrumental neutron activation (INAA)

description: Manganese nodules and crusts were sampled from box cores collected at the Manganese Nodule Program (MANOP) site H in the Eastern Equatorial Pacific ocean. For majority of site H nodule bottoms have smooth, lustrous patches, whereas nodule tops are generally rough and dull. The top/bottom orientation of each manganese nodule was labeled during curation. Most of the nodutes studied were cut in haIf, and a 3-5 mm layer was scraped from nodule tops and bottoms. The chemical analysis was performed on both top and bottom sides as well as on the whole specimen. They were analysed at the U.S. Geological Survey, Menlo Park using instrumental neutron activation analysis with high-resolution lithium-drifted germanium detectors. This method involves the meeasurement of gamma-ray emission after proper irradiation of the samples.
description: From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.This dataset represents the digitized Table 2, pp. 935 of the related publication.
DOI: 10.1594/pangaea.961506
title: MANOP Sites S and R manganese nodules chemical composition determined by atomic absorption spectrometry (AAS)

description: Manganese nodules were sampled from box cores collected at the Manganese Nodule Program (MANOP) site S (Clarion-Clipperton Fracture Zone) and site R (Murray Fracture Zone) in the Central Pacific ocean. For these sites nodule tops are smoother than nodule bottoms, which commonly have a gritty texture. The top/bottom orientation of each manganese nodule was labeled during curation. Most of the nodutes studied were cut in haIf, and a 3-5 mm layer was scraped from nodule tops and bottoms. The chemical analysis was performed on both top and bottom sides as well as on the whole specimen. They were analysed at the U.S. Geological Survey, Menlo Park using instrumental neutron activation analysis with high-resolution lithium-drifted germanium detectors. This method involves the meeasurement of gamma-ray emission after proper irradiation of the samples.
description: From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.This dataset represents the digitized Table 3, pp. 935 of the related publication.
DOI: 10.1594/pangaea.354572
title: Color measurements on sediment core SO106-261KA
DOI: 10.1594/pangaea.386603
title: (Table B1) Stable isotope ratios of benthic foraminifera from sediment core RS67-GC52
DOI: 10.1594/pangaea.386604
title: (Table B1) Stable isotope ratios of benthic foraminifera from sediment core RS78-GC18
DOI: 10.1594/pangaea.60257
title: (Appendix C) Smoothed, interpolated benthic foraminiferal isotope ratios of ODP Site 138-849 on the East Pacific Rise
DOI: 10.1594/pangaea.60261
title: Final stable oxygen and carbon isotope ratios of benthic foraminifera versus age of ODP Site 138-849 on the East Pacific Rise
DOI: 10.1594/pangaea.706232
title: Composite stratigraphy of ODP Site 177-1094 and sediment core TTN057-13-PC4 (Table 1)

description: Visual counts of ice-rafted debris (IRD), foraminifera, and radiolaria were made for ~1500 samples in Site 1094 spanning the last four climatic cycles (marine isotope stages 1-11). Most, but not all, of the IRD variability is captured by whole-core physical properties including magnetic susceptibility and Q-ray attenuation bulk density. Glacial periods are marked by high IRD abundance and millennial-scale variability, which may reflect instability of ice shelves in the Weddell Sea region. Each interglacial period exhibits low IRD and high foraminiferal abundance during the early part of the interglacial, indicating relatively warm sea-surface temperatures and reduced influence of sea ice. IRD increases and foraminiferal abundances decrease during the latter part of each interglacial, indicating a return to more glacial-like conditions. Glacial terminations I and V are each characterized by a step-wise reduction in ice-rafting punctuated by a brief pulse in IRD delivery and reversal in delta18O. The coarse fraction of the sediment is dominated by ash and radiolaria, and the relative abundance of these components is remarkably similar to the concentration of Na+ in Vostok. Each of these variables is believed to be controlled mainly by sea-ice cover, thereby providing a means for sediment-ice core correlation.
description: Supplement to: Kanfoush, Sharon L; Hodell, David A; Charles, Christopher D; Janecek, Thomas R; Rack, Frank R (2002): Comparison of ice-rafted debris and physical properties in ODP Site 1094 (South Atlantic) with the Vostok ice core over the last four climatic cycles. Palaeogeography, Palaeoclimatology, Palaeoecology, 182(3-4), 329-349
DOI: 10.1594/pangaea.354422
title: Color measurements on sediment core SO79-164KL
DOI: 10.1594/pangaea.798383
title: (Table 7) Age model of ODP Site 138-850
DOI: 10.1594/pangaea.354424
title: Color measurements on sediment core SO79-26KL
DOI: 10.1594/pangaea.354563
title: Color measurements on sediment core SO106-217KL
DOI: 10.1594/pangaea.354427
title: Color measurements on sediment core SO79-71KL
DOI: 10.1594/pangaea.798384
title: (Table 8) Age model of ODP Site 138-851
DOI: 10.1594/pangaea.798385
title: (Table 9) Age model of ODP Site 138-852
DOI: 10.1594/pangaea.798386
title: (Table 10) Age model of ODP Site 138-853
DOI: 10.1594/pangaea.803486
title: (Table 2) Calcium carbonate at DSDP Holes 85-574 and 85-574A
DOI: 10.1594/pangaea.354426
title: Color measurements on sediment core SO79-53KL
DOI: 10.1594/pangaea.354428
title: Color measurements on sediment core SO79-77KL
DOI: 10.1594/pangaea.354429
title: Color measurements on sediment core SO79-82KL
DOI: 10.1594/pangaea.798392
title: (Table 19) Sedimentation rates of ODP Site 138-845

description: Sediment depth is given in mcd. Estimated in overlapping 0.2 Ma intervals.
DOI: 10.1594/pangaea.131554
title: Age model of sediment core SO106-243KL
DOI: 10.1594/pangaea.131555
title: Age model of sediment core SO106-286KL
DOI: 10.1594/pangaea.887156
title: Carbonate weight percentages and foraminifer δ¹⁸O records from core TN057-10
DOI: 10.1594/pangaea.56039
title: (Table 2) SPECMAP stack of stable oxygen isotopes covering the last 300 000 years
DOI: 10.15468/dl.vn27r9
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
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 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0044308-240906103802322/datasets/export for details.
DOI: 10.1594/pangaea.132131
title: (Table 1) Clay mineral percentages in surface sediments from the Siberian Arctic shelf
DOI: 10.1594/pangaea.705284
title: Age calibration of the most significant coccolithophore biostratigraphic events at ODP Site 177-1089 (Table 1)

description: Coccolithophore assemblages at ODP Site 1089 in the southern Cape Basin (~41°S) were used to reconstruct surface-water conditions for the late Quaternary (Marine Isotope Stages (MIS) 1-15) in a region of strong hydrographic gradients in the southeast Atlantic. Stratigraphic control was provided by oxygen isotope stratigraphy and calcareous nannofossil events that are thought to be synchronous over a broad range of latitudes. The greatest coccolith abundances occurred at glacial terminations and, to a lesser degree, during glacial stages. Conversely, coccolithophores were the least abundant during the transition between interglacial to glacial stages, when calcium carbonate dissolution was strong. With the exception of these intervals, coccolith preservation is moderate to good, allowing study of the assemblages. The total abundance of coccolithophores and calcium carbonate variations at Site 1089 result both from variations in dissolution and carbonate production. During terminations, for example, the greatest calcium carbonate concentrations occurred at the same time as a moderate-to-poor preservation of coccoliths and foraminifers. Carbonate production was relatively high during these intervals. However, during terminations IV and V, maxima in carbonate production in the ocean were linked to high-dissolution processes at Site 1089. This trend is not observed for terminations I, II and III [Hodell et al., Earth Planet. Sci. Lett. 192 (2001) 109-124, doi:10.1016/S0012-821X(01)00430-7]. The interval from MIS 9 to 13 is coincident with high abundances of highly calcified species such as Gephyrocapsa caribbeanica. Here we discuss the contribution of this ubiquitous species to the production of calcium carbonate and their paleoecological significance. Except for occasional coccolith-barren intervals during interglacial periods, subtropical coccolith species were present continuously at ODP Site 1089 during the late Pleistocene. This suggests that the Polar Front has been south of Site 1089 for the last 600 kyr.
description: Depth is composite depth (mcd)
description: Supplement to: Flores, José-Abel; Marino, Maria; Sierro, Francisco Javier; Hodell, David A; Charles, Christopher D (2003): Calcareous plankton dissolution pattern and coccolithophore assemblages during the last 600 kyr at ODP Site 1089 (Cape Basin, South Atlantic): paleoceanographic implications. Palaeogeography, Palaeoclimatology, Palaeoecology, 196(3-4), 409-426
DOI: 10.1594/pangaea.51706
title: (Appendix) Stable isotopes and sea surface temperatures reconstructed from sediment core RC11-120
DOI: 10.1594/pangaea.354420
title: Color measurements on sediment core SO79-108KL
DOI: 10.1594/pangaea.354423
title: Color measurements on sediment core SO79-169KL
DOI: 10.1594/pangaea.131553
title: Age model of sediment core SO106-184KL
DOI: 10.1594/pangaea.407653
title: Stable isotope ratios of benthic foraminifera stable from Miocene Pacific sediments, DSDP Leg 29, Site 281 (Table 2)

description: Seven Miocene Pacific Ocean Deep Sea Drilling Project sites from four different water masses (planktonic foraminiferal biogeographic regions) have been correlated using 18 prominent carbon isotopic events defined in the benthic foraminiferal delta13C records in DSDP Site 289. The correlations are based on the assumption that there are global or at least Pacific-wide controls on the delta13C of deep-water [HCO3]**-. Each of the individual delta13C records is correlated to Site 289 based on the shape of the curves in a manner analogous to that used to correlate sea-floor magnetic anomaly patterns.The results of this correlation experiment confirm that planktonic foraminiferal biostratigraphy and carbon isotopic stratigraphy are consistent within the tropical surface water mass and precise to +/-100,000 years. Correlations between surface water masses suggest that the precision of foraminiferal biostratigraphy is on the average less than +/-200,000 years due to the lack of cosmopolitan marker species and diachronism of species occurrences. Carbon isotope stratigraphy used in conjunction with biostratigraphy has the potential to provide an easily utilized, globally applicable, correlation tool (with an interregional precision of +/-100,000 years or better) as more continuous and undisturbed deep-sea sections become available as a result of the Hydraulic Piston Coring Program.
description: Supplement to: Loutit, Tom S; Pisias, Nicklas G; Kennett, James P (1983): Pacific Miocene carbon isotope stratigraphy using benthic foraminifera. Earth and Planetary Science Letters, 66, 48-62
DOI: 10.1594/pangaea.358436
title: (Table 3) Stable isotope ratios measured on Uvigerina sp. from sediment core W8709A-13
DOI: 10.1594/pangaea.386588
title: (Table B1) Stable isotope ratio of benthic foraminifera from sediment core RS67-GC13
DOI: 10.1594/pangaea.386598
title: (Table B1) Stable isotope ratios of benthic foraminifera from sediment core RS67-GC16
DOI: 10.1594/pangaea.61073
title: (Table 1) Stable isotope ratios of benthic foraminifera from sediment core RC13-110 in the eastern Pacific
DOI: 10.1594/pangaea.55386
title: Stable oxygen isotope ratios of benthic foraminifera from sediment core RC13-110 (Table 1)

description: The Milankovitch theory of climate change predicts that variations of the climate system should match the dominant frequencies of the orbital forcing in the 41 and 23 kyr**-1 frequency bands. Such a linear theory would predict that the amplitude variations of the climate response in these bands should match amplitude variations in orbital forcing. Here we compare amplitude variations of the marine oxygen isotope record with orbital forcing in these bands over the last 700,000 years and find systematic changes through time. We express these amplitude mismatches as variations in the glacial response time, a measure of the climate system's sensitivity to orbitally induced insolation changes. Variations in the glacial response time occur in all frequencies bands without strong concentration of variance in any given band, and have a 'red' spectrum with larger variations at the longer periods. The response time is coherent with delta18O at periods of 100 and 41 kyr, which suggests that the variations in glacial response time in part reflect internal feedback mechanisms of the global climate system. The phase relationship between the estimated glacial response time and the delta18O (ice volume) record is very different at these two frequencies, which suggests at least two separate feedback mechanisms. The first mechanism enhances the 100,000-year climate cycle by increasing rates of change during major glacial terminations. Candidates for this feedback include lithospheric depression and rebound, enhanced ice calving from large marine based ice sheets, and possibly others. A second set of mechanisms, which is detected in the response to the 41,000-year orbital cycle of Earth's obliquity, accelerates ice growth events and slows glacial melting. Some models which include feedbacks between ice sheets, sea ice, and deep ocean temperatures predict early rapid ice growth, followed by slower growth, and this general feature is consistent with our analysis. While we can not at present identify the specific feedbacks leading to asymmetry of growth and decay rates at different frequency bands, the finding of this ice-growth acceleration mechanism in the 41,000-year frequency band suggests that high-latitude processes, where insolation varies most strongly at this rhythm, may be involved. Our finding of systematic changes in climate sensitivity has implications for orbitally tuned chronologies in Pleistocene sediments. Instead of a constant phase shift within a frequency band between orbital forcing and glacial response, as has been assumed in the past, we suggest a variable phase. The largest changes in age estimates for isotopic events are at the glacial terminations, which in our chronology are as much as 3500 years older that estimated previously.
description: Supplement to: Pisias, Nicklas G; Mix, Alan C; Zahn, Rainer (1990): Nonlinear response in the global climate system: evidence from benthic oxygen isotopic record in core RC13-110. Paleoceanography, 5(2), 147-160
DOI: 10.1594/pangaea.798378
title: (Table 2) Age model of ODP Site 138-845
DOI: 10.1594/pangaea.845858
title: Calcium carbonate and organic carbon content, and stable isotope composition of sediment core RC10-62

description: CaCO3, C-org data by Lyle for this paper. Stable isotope analyses by Mix for this paper and Pisias and Mix (1997).
DOI: 10.1594/pangaea.798380
title: (Table 4) Age model of ODP Site 138-847
DOI: 10.1594/pangaea.798402
title: (Table 23) Sedimentation rates of ODP Site 138-849

description: Sediment depth is given in mcd. Estimated in overlapping 0.2 Ma intervals.
DOI: 10.1594/pangaea.798396
title: (Table 24) Sedimentation rates of ODP Site 138-850

description: Sediment depth is given in mcd. Estimated in overlapping 0.2 Ma intervals.
DOI: 10.1594/pangaea.803485
title: (Table 1) Stable isotope ratios of benthic foraminifera from DSDP Hole 85-574A

description: Sediment depth is given in mbsf. All d18O analyses have been normalized to values of Uvigerina sp., and d13C analyses have been normalized to values of Cibicidoides spp.
DOI: 10.1594/pangaea.807292
title: (Table 4) Factor-loading matrix estimate for the time slice 1 samples of ODP Leg 138 holes

description: DEPTH, sediment is given in mbsf.
DOI: 10.1594/pangaea.60255
title: (Appendix A) Stable carbon and oxygen isotope ratios of benthic foraminifera from ODP Site 138-849 on the East Pacifi Rise
DOI: 10.15468/dl.m6xyj5
title: Occurrence Download

description: A dataset containing 137 species occurrences available in GBIF matching the query:
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 "Geometry POLYGON ((73.63841 32.05122, 73.75088 32.05122, 73.75088 32.09429, 73.63841 32.09429, 73.63841 32.05122))",
 "Year is greater than or equal to 2010",
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 "OccurrenceStatus is Present",
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 The dataset includes 137 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0044309-240906103802322/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.52247
title: (Table 1) Stable isotopes measured on planktonic foraminifer Globorotalia tumida from DSDP Hole 68-503B
DOI: 10.1594/pangaea.845863
title: Calcium carbonate and stable isotope composition of sediment core V19-30

description: CaCO3 from Ninkovich and Shackleton (1975). Stable isotopes from Shackleton and Pisias (1985).
DOI: 10.1594/pangaea.798399
title: (Table 27) Sedimentation rates of ODP Site 138-853

description: Sediment depth is given in mcd. Estimated in overlapping 0.2 Ma intervals.
DOI: 10.1594/pangaea.798393
title: (Table 20) Sedimentation rates of ODP Site 138-846

description: Sediment depth is given in mcd. Estimated in overlapping 0.2 Ma intervals.
DOI: 10.1594/pangaea.808774
title: Paleomagnetic measurements on sediment core 10PC03
DOI: 10.1594/pangaea.386601
title: (Table B1) Stable isotope ratios of benthic foraminifera from sediment core RS67-GC3
DOI: 10.1594/pangaea.386606
title: (Table B1) Stable isotope ratios of benthic foraminifera from sediment core SO36-17SL
DOI: 10.1594/pangaea.386608
title: (Table B1) Stable isotope ratios of benthic foraminifera from sediment core SO36-7SL
DOI: 10.1594/pangaea.726689
title: (Table 2) Linear sedimentation rates in DSDP Hole 68-503B

description: based on oxygen isotope chronostratigraphy og Imbrie et al. (1984)
DOI: 10.1594/pangaea.354430
title: Color measurements on sediment core SO79-85KL
DOI: 10.1594/pangaea.354425
title: Color measurements on sediment core SO79-48KL
DOI: 10.1594/pangaea.720931
title: (Table 2) Age model of ODP Hole 145-884B
DOI: 10.1594/pangaea.720932
title: (Table 2) Age model of ODP Hole 145-884D
DOI: 10.1594/pangaea.354559
title: Color measurements on sediment core SO106-181KL
DOI: 10.1594/pangaea.358437
title: (Table 3) Stable isotope ratios measured on Uvigerina sp. from sediment core W8709A-1
DOI: 10.1594/pangaea.358439
title: (Table 3) Stable isotope ratios measured on Uvigerina sp. from sediment core W8709A-8
DOI: 10.1594/pangaea.55519
title: (Table 3) Stable oxygen isotope ratios of Neogloboquadrina pachyderma from surface sediments in the Southern Ocean

description: Data compilation of Charles and Fairbanks (1990) and Keigwin and Boyle (1989)
DOI: 10.1594/pangaea.354570
title: Color measurements on sediment core SO106-251KL
DOI: 10.1594/pangaea.354571
title: Color measurements on sediment core SO106-254KL
DOI: 10.1594/pangaea.354573
title: Color measurements on sediment core SO106-268KA
DOI: 10.1594/pangaea.354574
title: Color measurements on sediment core SO106-272KA
DOI: 10.1594/pangaea.354575
title: Color measurements on sediment core SO106-276KL
DOI: 10.1594/pangaea.354576
title: Color measurements on sediment core SO106-278KA
DOI: 10.1594/pangaea.354560
title: Color measurements on sediment core SO106-184KL
DOI: 10.1594/pangaea.354561
title: Color measurements on sediment core SO106-189KL
DOI: 10.1594/pangaea.354562
title: Color measurements on sediment core SO106-206KL
DOI: 10.1594/pangaea.354564
title: Color measurements on sediment core SO106-222SL
DOI: 10.1594/pangaea.354565
title: Color measurements on sediment core SO106-229KL
DOI: 10.1594/pangaea.354566
title: Color measurements on sediment core SO106-235KL
DOI: 10.1594/pangaea.354567
title: Color measurements on sediment core SO106-243KL
DOI: 10.1594/pangaea.354568
title: Color measurements on sediment core SO106-244KA
DOI: 10.1594/pangaea.354569
title: Color measurements on sediment core SO106-249KL
DOI: 10.1594/pangaea.55509
title: Age model of ODP Site 138-847
DOI: 10.1594/pangaea.131556
title: Age model of sediment core SO79-164KL
DOI: 10.1594/pangaea.358457
title: Age model of ODP Site 138-845
DOI: 10.1594/pangaea.358458
title: Age model of ODP Site 138-848
DOI: 10.1594/pangaea.358459
title: Age model of ODP Site 138-849
DOI: 10.1594/pangaea.358460
title: Age model of ODP Site 138-850
DOI: 10.1594/pangaea.358461
title: Age model of ODP Site 138-851