cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.712137
title: 10Be and 9Be concentrations and ratios of hydroxylamine leachable and residual phases of DSDP Site 64-477 (Table 1)

description: Profiles of both10Be and9Be concentrations have been measured in sediments from the DSDP, Leg 64, Site 477 core. Established in the deep Guaymas Basin, in an area of high heat flow, this site offers the opportunity of studying hydrothermal alteration induced by two distinct hydrothermal systems, those caused (I) by the intrusion of hot sills into porous sediments and (I) by heat associated with a magma chamber.The results show that the distribution of both beryllium isotopes between two operationally defined sedimentary phases (material susceptible to hydroxylamine leaching and residual material) changes with the degree of hydrothermal alteration. A decrease in10Be/9Be in the leachable phase of altered sediments relative to unaltered sediments indicates that hydrothermal alteration is not limited to a simple chemical leaching but involves redistribution of the beryllium isotopes between metamorphosed sedimentary phases. In addition, the similarity of the mean10Be/9Be ratios associated with the leachable and the residual phases in the part of the core which has experienced greenschist facies metamorphism suggests that this process leads in the prevailing geophysical conditions to isotopic homogenization.A close relationship exists between10Be and MgO concentrations in altered sediments from this core. This supports earlier observations that beryllium is not easily removed from the sedimentary column and indicates that this remains the case even under the conditions encountered in submarine hydrothermal systems.
description: Supplement to: Bourlès, Didier L; Brown, E T; Raisbeck, Grant M; Yiou, Françoise; Gieskes, Joris M (1992): Beryllium isotope geochemistry of hydrothermally altered sediments. Earth and Planetary Science Letters, 109(1-2), 47-56
DOI: 10.1594/pangaea.961104
title: Noble gas (helium and neon) measured on water samples from stainless steel CTD during METEOR cruise M176/2

description: This dataset contains measured isotopic compositions of noble gases (helium and neon) of water samples collected during the METEOR expedition (M176/2) between Sep 1st and Oct 6th, 2021 on the Rainbow hydrothermal field, Mid-Atlantic Ridge. Seawater samples for noble gases were collected in a copper pipe, which was connected to the Niskin bottles, with water flowing until bubbles in the tube were removed. While the water was flowing, the pipe was closed using an electrical drill and a ratchet to ensure it is tight enough. Helium and neon isotopes were analyzed at the University of Bremen, using the methods described by Sültenfuß et al. (2009). In detail, helium and neon were separated from other gases with a cryogenic system at 25 K. A fraction (3 %) of separated gases was diverted into the quadrupole mass spectrometer (QMS) (Balzers QMG112a®) to measure helium and neon. Upon raising the trap temperature to 45 K, helium and neon were released into the main sector field mass spectrometer (SMS) to measure the concentrations of 3He, 4He, and 20Ne. The measured concentrations were in a unit of CCSTP (cubic centimeters at standard temperature and pressure). delta3He (δ3He, in ‰) was calculated as: [3He/4He(sample)/3He/4He(air)-1]*100, and delta22Ne (δ22Ne, in ‰) was calculated as: [22Ne/20Ne(sample)/22Ne/20Ne(air)-1]*100. The background 3He (2.38 fM) in the deep ocean was calculated from the background δ3He (~ -1.7%) and equilibrium helium concentrations (~ 1.75 nM) at the salinity (35 PSU) and temperature (~ 3.5 °C) ranges of the seawater samples. The excess of 3He (3Hexs) was then calculated by extracting the measured 3He concentrations with the background 3He level.
DOI: 10.1594/pangaea.705047
title: (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 87-583D
DOI: 10.1594/pangaea.705048
title: (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 87-583F
DOI: 10.1594/pangaea.705049
title: (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 87-584
DOI: 10.1594/pangaea.710931
title: (Table 2) Results of stepwise degassing experiments and diffusion runs on pelagic clays from Core LR44-GPC-3

description: For all samples duration of each step was 60 min.
DOI: 10.1594/pangaea.962645
title: Lithium and osmium isotopes in bulk carbonates of ODP Hole 159-959D
DOI: 10.1594/pangaea.962641
title: Lithium and osmium isotopes, and trace element ratios in bulk carbonates of ODP Site 208-1263
DOI: 10.1594/pangaea.962643
title: Lithium and osmium isotopes, and trace element ratios in bulk carbonates of IODP Site 320-U1333
DOI: 10.1594/pangaea.385651
title: Radionuclides from sediment trap Polar_Front_1
DOI: 10.1594/pangaea.932623
title: K-Ar isotopy data of deformed samples from the Yushu mélange, western Jinsha Suture

description: Deformed samples from the Yushu mélange, in the western Jinsha Suture, have been dated by 40Ar/39Ar isotopy on micas and/or amphibole. Rock samples were crushed using standard procedures. Individual grains were handpicked from the 0.5-1-millimeter fraction of the crushed samples. Samples were irradiated in three batches, IR24, IR26 and IR36, at McMaster Nuclear Reactor (Hamilton, Ontario, Canada - https://nuclear.mcmaster.ca/facilities-equipment/facility-list/mcmaster-nuclear-reactor/) in its 8E high neutron flux facility. IR24 IR26 and IR36 lasted 50.967h, 50h and 200.95h with global efficiencies (J/h) of 4.97 x 10-5, 8.25 x 10-5 h-1 and 1.03 x 10-4 h-1. The analytical procedure is described by Ruffet et al. (1991, 1995). The irradiation standard were sanidine TCRs (28.608 ± 0.033 Ma according to Renne et al., 2011) for irradiation IR24 and IR26 and amphibole Hb3gr (1081.0 ± 1.2 Ma according to Renne et al., 2011) for irradiation IR36. Blanks were performed routinely each first or third/fourth run, and are subtracted from the subsequent sample gas fractions. Errors of apparent ages are plotted at the 1σ level and do not include the errors on the 40Ar*/39ArK ratio and age of the monitor and decay constant. The errors on the 40Ar*/39ArK ratio and age of the monitor and decay constant are included in the final calculation of the error margins on the pseudo-plateau and plateau ages. 40Ar/39Ar ages are provided with 2σ errors. Analytical data and parameters used for calculations (e.g. isotopic ratios measured on pure K and Ca salts; mass discrimination; atmospheric argon ratios; J parameter; decay constants) and reference sources are available in Table "Parameters used for Ar-Ar data analysis".
DOI: 10.1594/pangaea.963823
title: Dinoflagellate cyst concentrations in the benthic nepheloid layer, off Figueira da Foz (NW Portugal, Atlantic Iberian margin)
DOI: 10.1594/pangaea.963830
title: Dinoflagellate cyst concentrations in surface sediments, off Figueira da Foz (NW Portugal, Atlantic Iberian margin)
DOI: 10.1594/pangaea.963774
title: Noble gas (helium and neon) measured on water samples from stainless steel CTD during METEOR M176/2 cruise

description: This dataset contains measured isotopic compositions of noble gases (helium and neon) of water samples collected during the METEOR expedition (M176/2) between Sep 1st and Oct 6th, 2021 on the Rainbow hydrothermal field, Mid-Atlantic Ridge. Seawater samples for noble gases were collected in a copper pipe, which was connected to the Niskin bottles, with water flowing until bubbles in the tube were removed. While the water was flowing, the pipe was closed using an electrical drill and a ratchet to ensure it is tight enough. Helium and neon isotopes were analyzed at the University of Bremen, using the methods described by Sültenfuß et al. (2009). In detail, helium and neon were separated from other gases with a cryogenic system at 25 K. A fraction (3 %) of separated gases was diverted into the quadrupole mass spectrometer (QMS) (Balzers QMG112a®) to measure helium and neon. Upon raising the trap temperature to 45 K, helium and neon were released into the main sector field mass spectrometer (SMS) to measure the concentrations of 3He, 4He, and 20Ne. The measured concentrations were in a unit of CCSTP (cubic centimeters at standard temperature and pressure). delta3He (δ3He, in ‰) was calculated as: /[3He/4He(sample)/3He/4He(air)-1]× 100, and delta22Ne (δ22Ne, in ‰) was calculated as: [22Ne/20Ne(sample)/22Ne/20Ne(air)-1]*100. The background 3He (2.38 fM) in the deep ocean was calculated from the background δ3He (~ -1.7%) and equilibrium helium concentrations (~ 1.75 nM) at the salinity (35 PSU) and temperature (~ 3.5 °C) ranges of the seawater samples. The 3He concentrations contributed by atmospheric components were calculated by the [3He_A = 1.384 ×10**-6× 0.28823× (measured Ne - background Ne)]. The excess of 3He (3Hexs) was then calculated by extracting the measured 3He concentrations with the background 3He level, 3He_A, and 3He released from the decay of tritium (~ 0.1127 fmol/kg).
DOI: 10.1594/pangaea.707888
title: (Table 2) Os concentrations and 187Os/188Os ratios of leached sediment from ODP Hole 199-1218A

description: Sediment depth (m) is revised meters composite depth (rmcd)
DOI: 10.1594/pangaea.962186
title: Global literature database for freshwater jellyfish research between 1880 and 2023

description: Freshwater jellyfish (FWJ) research has historically been hampered by several factors, including but not limited to: focus on one life cycle stage, diversity of publication languages (numerous national languages), and regional bias, with results scattered across many sources. In this database, we attempted to compile all globally available literature pieces, i.e., peer-reviewed papers, reviews, notes, book chapters, and some grey literature published between 1880 and September 2023, but excluding newspaper articles, symposium and conference contributions, theses, and dissertations. The database contains information on three FWJ genera (Astrohydra, Craspedacusta, Limnocnida) totalling 697 entries. Other, less studied, taxonomically doubtful, and/or regionally restricted FWJ, salt lake, and low-saline tolerant genera (Australomedusa, Halmomises, Keralica, Mansariella, Moerisia) were not included. This database will enable investigators to systematically and comprehensively search for published research advancing the field of FWJ.
description: *****************************************************Explanation of the column headings of the data file*****************************************************Genus &gt; Three levels: Astrohydra, Craspedacusta, LimnocnidaReference &gt; Citation format of peer-reviewed paperPaper title &gt; Title of the articleYear &gt; Publication yearDecade &gt; Publication decadeJournal &gt; Publication journalVolume &gt; Journal volumeIssue &gt; Journal issueLanguage &gt; 20 levels: English, German, French, Russian, Spanish, OtherLife cycle stage &gt; Focus stage in the paper, three levels: Frustule, Medusa, PolypContinent &gt; Continent of primary institute affiliation of first author
DOI: 10.1594/pangaea.904772
title: (Table A8a) Results of TIMS analysis of rutile and description of grain fractions in the Barrovian metamorphic sequence

description: Results of TIMS analysis of rutile and description of grain fractions. 206Pb/204Pb ratios are corrected for spike and fractionation only. Radiogenic ratios are corrected for spike, fractionation and initial Pb using the K-feldspar composition. Data were reduced and errors propagated using AnySpike (Schmitz and Schoene, 2007).
DOI: 10.1594/pangaea.714846
title: (Table 1) SHRIMP U-Pb zircon results for ODP Site 176-735B samples

description: Zircon of sample 606, ODP sample 176-735B-104R-3,5-9. AGE is the 206Pb/238U age. Correction for common Pb made using the measured 238U/206Pb and 207Pb/206Pb ratios following Tera and Wasserburg (1972, doi:10.1016/0012-821X(72)90128-8), as outlined in Compston et al. (1992)
DOI: 10.1594/pangaea.833697
title: (Table 2) Be isotopic composition of Fe-Mn crusts at seamounts in the Northwest Pacific
DOI: 10.1594/pangaea.924604
title: Authigenic Pb and Nd isotope composition snapshot of surface sediments in the Atlantic sector of the Southern Ocean

description: Radiogenic lead (Pb) and neodymium (Nd) isotope compositions extracted from authigenic phases in marine sediments are sensitive tracers to reconstruct past ocean circulation and water mass mixing. Chemical reductive leaching of hydrogenetic ferromanganese oxyhydroxides from bulk sediments is the most practical way to recover past seawater Pb and Nd isotope signatures in the Southern Ocean, due to the scarcity of alternative archives. However, the leached signal could be compromised if substantial quantities of Pb and Nd were released from non-hydrogenetic sediment fractions during chemical extraction. We developed a very short 10-seconds leaching method to extract reliable seawater Pb and Nd isotope signals from sediments in the Atlantic sector of Southern Ocean. Based on this method, we extracted seawater Pb and Nd signals from 70 core top sediments covering different geological settings in the Atlantic sector of Southern Ocean collected by past Polarstern RV cruises to evaluate factor controlling the regional authigenic Pb and Nd isotopic composition variability.
DOI: 10.1594/pangaea.959566
title: Dissolved neodymium and hafnium isotope data of surface water samples during RV Meteor cruise M147

description: The dataset contains the isotope compositions of dissolved Nd and Hf in surface waters. Nd and Hf isotopes were measured by Neptune Plus MC-ICP-MS. External reproducibility was monitored by internal laboratory standard solutions NIST 3135a and CGHF1, and USGS reference material NOD-A-1.
description: % removal fraction = (1-[Nd or Hf]measured / [Nd or Hf]conservative) * 100. [Nd or Hf]measured represents the actual concentration measured and [Nd or Hf]conservative represents the concentration expected from conservative two-endmember mixing for the same salinity.
DOI: 10.1594/pangaea.707887
title: (Table 1) Os concentrations and 187Os/188Os ratios of bulk sediment from ODP Hole 199-1219A

description: Sediment depth (m) is revised meters composite depth (rmcd). Sample 199-1219A-17H-7,125-129 are two splits of the same sample powdered and homogenized separately
DOI: 10.1594/pangaea.711299
title: (Table 3) Concentrations and isotopic ratios of thorium and uranium in sediments at ODP Site 177-1090
DOI: 10.1594/pangaea.959520
title: Detrital zircon U-Pb geochronology of (Plio-)Pleistocene sediments in West Sarawak

description: The data set comprises detrital zircon U-Pb geochronology from two Pleistocene (possible Plio-Pleistocene) sandstone deposits in West Sarawak. Deposits at Kampung Jangkar (TB72) were almost entirely sourced by the Upper Cretaceous Pueh batholith, and the detrital data can be used to constrain the intrusion age of the batholith at c. 80±0.6 Ma. Deposits in Petra Jaya (northern Kuching city; TB15b) show a heterogeneous age pattern, indicating recycling of the Kayan Sandstone from the Bungo Range area. In particular sample TB15b shows a number of Miocene to Pliocene zircons that indicate felsic volcanism in central Borneo in the Late Miocene to early Pliocene, which correlates to previously known mafic volcanism (e.g., Nuit Volcanics).
DOI: 10.1594/pangaea.711298
title: (Table 3) Concentrations and isotopic ratios of thorium and uranium in sediments at ODP Site 177-1089
DOI: 10.1594/pangaea.963768
title: Dinoflagellate cyst abundance in the benthic nepheloid layer, sediment trap and surface sediments off Figueira da Foz (NW Portugal, Atlantic Iberian margin)
DOI: 10.1594/pangaea.963775
title: Dinoflagellate cyst concentrations in a sediment trap off Figueira da Foz (NW Portugal, Atlantic Iberian margin)
DOI: 10.1594/pangaea.868634
title: (Table 1, page 418) 10Be measurements inside a ferromanganese crust of the Atlantic Ocean

description: The growth rate of a manganese nodule from the South Atlantic Ocean (Rio Grande Ridge) has been determined using a 10Be profile as measured with a Tandem Van de Graaff accelerator. This rate is 4.5 mm /My. A correlation may exist between the 10Be flux and the Mn flux to nodules.
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.
description: Supplement to: Turekian, Karl K; Cochran, J Kirk; Krishnaswami, Seth; Lanford, W A; Parker, P D; Bauer, K A (1979): The measurement of 10Be in manganese nodules using a tandem Van De Graaff accelerator. Geophysical Research Letters, 6(5), 417-420
DOI: 10.1594/pangaea.57912
title: (Figure 3b) 230Th, 231Pa and 231Pa/230Th activity ratios of sediment core PS1508-1
DOI: 10.1594/pangaea.788550
title: Atlantic 231Pa/230Th and biogenic opal compilation of the Holocene and the LGM

description: The strength and geometry of the Atlantic meridional overturning circulation is tightly coupled to climate on glacial-interglacial and millennial timescales, but has proved difficult to reconstruct, particularly for the Last Glacial Maximum. Today, the return flow from the northern North Atlantic to lower latitudes associated with the Atlantic meridional overturning circulation reaches down to approximately 4,000 m. In contrast, during the Last Glacial Maximum this return flow is thought to have occurred primarily at shallower depths. Measurements of sedimentary 231Pa/230Th have been used to reconstruct the strength of circulation in the North Atlantic Ocean, but the effects of biogenic silica on 231Pa/230Th-based estimates remain controversial. Here we use measurements of 231Pa/230Th ratios and biogenic silica in Holocene-aged Atlantic sediments and simulations with a two-dimensional scavenging model to demonstrate that the geometry and strength of the Atlantic meridional overturning circulation are the primary controls of 231Pa/230Th ratios in modern Atlantic sediments. For the glacial maximum, a simulation of Atlantic overturning with a shallow, but vigorous circulation and bulk water transport at around 2,000 m depth best matched observed glacial Atlantic 231Pa/230Th values. We estimate that the transport of intermediate water during the Last Glacial Maximum was at least as strong as deep water transport today.
description: 231Pa/230Th and biogenic opal compilation of new and published data from the Holocene (in the range of 0 - 7 ka) and the Last Glacial Maximum (LGM) in the range of 19 - 24 ka. References for age models and published data are indicated in the last columns according to the list of references. Only 231Pa/230Th measurements by ICP-MS (or AMS) have been considered.
description: Supplement to: Lippold, Jörg; Luo, Yiming; Francois, Roger; Allen, Susan E; Gherardi, Jeanne-Marie; Pichat, Sylvain; Hickey, Ben M; Schulz, Hartmut (2012): Strength and geometry of the glacial Atlantic Meridional Overturning Circulation. Nature Geoscience, 5, 813-816
DOI: 10.15468/dl.4swwjv
title: Occurrence Download

description: A dataset containing 360 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "TaxonKey is one of (Plethodon kiamichi Highton, 1989)"
 ]
}

 The dataset includes 360 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0003568-250415084134356/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ej7ddo
title: Occurrence Download

description: A dataset containing 1951121 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Austria",
 "DatasetKey is ZOBODAT (Zoological Botanical Database)"
 ]
}

 The dataset includes 1951121 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0014945-151016162008034/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vrv279
title: Occurrence Download

description: A dataset containing 19 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Cousinia regelii C.Winkl."
 ]
}

 The dataset includes 19 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015033-240314170635999/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.a58x2z
title: Occurrence Download

description: A dataset containing 63 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is The InBIO Barcoding Initiative Database: Portuguese Bats (Chiroptera)"
 ]
}

 The dataset includes 63 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027279-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ej7hxr
title: Occurrence Download

description: A dataset containing 82 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Elleanthus longibracteatus (Lindl. ex Griseb.) Fawc."
 ]
}

 The dataset includes 82 records from 15 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0014945-160118175350007/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.nknmkx
title: Occurrence Download

description: A dataset containing 18 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Curcuma sessilis Gage"
 ]
}

 The dataset includes 18 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015404-240314170635999/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.x8ujsn
title: Occurrence Download

description: A dataset containing 1492 species occurrences available in GBIF matching the query:
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 "TaxonKey is Sphaerechinus Desor, 1856",
 "TaxonKey is Echinaster sepositus (Retzius, 1783)"
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}

 The dataset includes 1492 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0014940-171219132708484/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.