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  • 2020-2024  (14)
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  • 1
    Publication Date: 2023-11-24
    Description: This GGR Bibliographic Review is a survey of approximately 5200 geoanalytical publications for the year 2021. Selected articles, numbering over 340, containing measurement results for relevant geological and environmental reference materials are listed with individual summaries of target analytes, relevant reference materials and producers. A brief summary of a selection of these publications is included that highlights notable developments in geoanalytical studies, newly developed or characterised RMs, and new datasets of established reference materials that have been re‐analysed using improved or state‐of‐the‐art measurement techniques.
    Description: Key Points: Literature review of 5200 geoanalytical publications for the year 2021. 344 selected articles with summaries of target analytes, relevant reference materials and producers. Selected publications include data obtained by new analytical developments and improved analytical protocols for established RMs, and identifies recently developed RMs for specific scientific topics.
    Description: http://georem.mpch-mainz.gwdg.de/
    Keywords: ddc:550 ; review ; analytical geochemistry ; geochemical reference materials ; reference material data ; GeoReM database ; environmental reference materials
    Language: English
    Type: doc-type:article
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  • 2
    Publication Date: 2024-02-07
    Description: Oxygen depletion threatens an increasing number of shallow water environments, specifically habitats below the seasonal halocline in coastal settings of the Baltic Sea. To understand the natural variations of dissolved oxygen levels on seasonal and inter-annual time-scales prior to the instrumental era, high-resolution archives are urgently required. The present study evaluates the potential use of Mn/Ca values in shells of the bivalve, Arctica islandica to infer concentrations of past dissolved oxygen concentrations. This study is based on laser ablation – inductively coupled plasma – mass spectrometry (LA-ICP-MS) data of six contemporaneous specimens and demonstrates that background variations of shell Mn/Ca are inversely linked to dissolved oxygen concentrations in the water column (r = −0.68; R2 = 0.46, p 〈 0.0001), which in turn are coupled to the amount of dissolved Mn. The regular seasonal changes were superimposed by sharp Mn/Ca peaks, most likely resulting from the ingestion of a large amount of Mn-rich organic particles. The availability of such particles can increase due to the resuspension of food particles by strong bottom currents or alternatively, result from increased particle flux from surface waters after major river discharges and subsequent phytoplankton blooms. Besides sharp Mn/Ca peaks, often accompanied by sharp Ba/Ca peaks and increased shell growth rate. In addition, after exceptional major barotropic inflows from the North Sea, the biogeochemical steady-state conditions remained disturbed for up to ca. two years, because the redox-sensitive elements were removed from the water column by oxygenated waters, and it took time for them to build up again in the water column. Therefore, subsequent to such Major Baltic Inflows (MBIs), dissolved Mn levels and shell Mn/Ca values were strongly reduced despite summertime low-oxygen conditions. As demonstrated here, Mn/Ca data of A. islandica shells can potentially serve as a proxy for dissolved oxygen levels in the water column. To further develop this proxy, a set of additional environmental and physiological proxies such as shell Ba/Ca values and growth rate should be critically assessed and used in combination with shell Mn/Ca.
    Type: Article , PeerReviewed
    Format: text
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  • 3
    Publication Date: 2024-06-01
    Keywords: AGE; Aluminium/Calcium ratio; Barium/Calcium ratio; Cueva Larga, Puerto Rico; DISTANCE; Isotope ratio mass spectrometer (IRMS) with a GasBench; LA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer; Magnesium/Calcium ratio; Phosphorus/Calcium ratio; PR-LA-1; Sample ID; speleothem; Speleothem sample; SPS; Stable isotopes; Strontium/Calcium ratio; Thorium/Calcium ratio; trace elements; Uranium/Calcium ratio; δ13C, carbonate; δ18O, carbonate
    Type: Dataset
    Format: text/tab-separated-values, 20317 data points
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  • 4
    Publication Date: 2024-06-01
    Description: High-resolution multi-proxy records from two lakes on the southern Tibetan Plateau, Nam Co and Tangra Yumco, are used to infer long-term variations in the Asian monsoon system. We examine the moisture evolution during the Late Glacial Maximum and Holocene using the trace element and stable isotope composition of ostracod shells. The sediment records covering the past 24 cal. ka BP and 18 cal. ka BP, respectively, demonstrate the suitability of ostracod shell chemistry as paleoenvironmental proxy. We analysed (i) Mg/Ca, Ba/Ca and Sr/Ca ratios as salinity proxies, (ii) Fe/Ca, Mn/Ca and U/Ca ratios representing redox conditions and microbial activity, and (iii) rare earth elements (REEs) reflecting weathering and changes in provenance.
    Keywords: Ostracoda; Paleoclimate; Paleolimnology; Rare earth elements; Stable carbon and oxygen isotopes; trace elements ratio
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 5
    Publication Date: 2024-06-01
    Description: We present results of Th/U dating, stable isotope and trace element data from a speleothem from Puerto Rico. Th/U dating was performed using isotope dilution MC-ICPMS. Activity ratios were corrected for initial Th assuming an detrital weight ratio 232Th/238U = 0.154 ± 0.038 (corresponding to an activity ratio of the detritus in secular equilibrium of (230Th/232Th)detr = 19.79 ± 4.93), and secular equilibrium of the detritus. Ages are calculated using the decay constants by Cheng et al. (2000)). Uncertainties are given as 2σ- range, and do not include half-life uncertainties. Th/U dating shows that stalagmite PR-LA-1 covers the period from 15.4 to 46.2 ka with a growth interruption between 35.5 and 41.1 ka. Stable isotope samples were drilled with a spatial resolution of 1 mm and measured using an IRMS equipped with a Gasbench. Element/Calcium ratios of the speleothem were measured by laser ablation ICPMS and were reduced to the resolution of the stable isotope records.
    Keywords: speleothem; Stable isotopes; trace elements
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 6
    Publication Date: 2024-06-01
    Description: We present a new speleothem trace element and stable isotope record, which extends previous paleoclimate evidence from Cuban speleothems to the last 96 ka. Stable isotope samples were micromilled at a resolution of 0.10-0.33mm, and measured using an IRMS equipped with a Gasbench. Line scans of Element/Calcium ratios of the speleothem were measured by laser ablation ICPMS and were reduced to the resolution of the stable isotope records.
    Keywords: AGE; Central America; Mass spectrometer DeltaPlusXL coupled to a Gasbench II; paleoclimatology; Santo Tomas Cave, Cuba; speleothem; Speleothem sample; SPS; Stable isotopes; Stalagmite Cuba Medio; STC-CM; δ13C, stacked; δ18O, stacked
    Type: Dataset
    Format: text/tab-separated-values, 3568 data points
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  • 7
    Publication Date: 2024-06-01
    Description: We present a new speleothem trace element and stable isotope record, which extends previous paleoclimate evidence from Cuban speleothems to the last 96 ka. Stable isotope samples were micromilled at a resolution of 0.10-0.33mm, and measured using an IRMS equipped with a Gasbench. Line scans of Element/Calcium ratios of the speleothem were measured by laser ablation ICPMS and were reduced to the resolution of the stable isotope records.
    Keywords: AGE; Barium/Calcium ratio; Central America; Laser-ablation inductively coupled plasma sector field mass spectrometer (LA-ICP-SF-MS); Magnesium/Calcium ratio; paleoclimatology; Phosphorus/Calcium ratio; Santo Tomas Cave, Cuba; speleothem; Speleothem sample; SPS; Stalagmite Cuba Medio; STC-CM; Strontium/Calcium ratio; trace elements; Uranium/Calcium ratio
    Type: Dataset
    Format: text/tab-separated-values, 11205 data points
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  • 8
    Publication Date: 2024-06-01
    Description: For trace element analyses, single specimens of C. wuellerstorfi have been analyzed using femtosecond laser ablation inductively coupled plasma mass spectrometry (fs-LA-ICP131 MS) at the Geochemistry Laboratory at the Max Planck Institute for Chemistry. Na, Mg, and Sr of 142 specimens of C. wuellerstorfi have been measured at high-resolution on (up to) each of the final five chambers to eliminate possible inaccuracies that are likely to be caused by varying sample size. The fs-LA-ICP-MS analyses were performed on 25-μm diameter spots on each chamber with a pulse repetition rate of 15 Hz at low fluence (0.1-0.3 J/cm2). Calibration was performed with the microanalytical synthetic reference material MACS‐3 for carbonate and NIST612 for silica. Average values of all chambers analyzed in the same specimen were used for further analyses. Since foraminifers from different regions show particular offsets in the Mg/Ca composition of their shell, depending on region specific temperature ranges of ambient seawater, region-specific formulas are used. We have applied the formula Mg/Ca=0.82e^0.19*BWT of Tisserand et al. (2013) from samples collected from similar geographic situations to avoid offsets. The formula has been applied to calculate temperature variability of each analyzed chamber. The average value obtained from chamber-to-chamber temperature variability of each specimen has been applied as average temperature data of the entire test.
    Keywords: 165-999A; Caribbean Sea; Cibicidoides wuellerstorfi, Magnesium/Calcium ratio; Cibicidoides wuellerstorfi, Sodium/Calcium ratio; Cibicidoides wuellerstorfi, Strontium/Calcium ratio; DRILL; Drilling/drill rig; Joides Resolution; LA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer; Leg165; Sample code/label; Sample ID; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 3701 data points
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  • 9
    Publication Date: 2024-06-01
    Description: Here, we present a global compilation of previously reported sightings of the rare planktic foraminifer Globorotalia cavernula Bé, 1967 as well as new observations of live-collected specimens from the Southern Ocean (Subantarctic south of Africa). The goal of this synthesis is to provide the geographic and stratigraphic context needed to investigate the past and present-day distributions of this rare but possibly under-recognized species. The previous records include modern occurrences in the water column (collected by plankton net tows and a single sediment trap) and seafloor sediments ranging in age from recent to Eocene. Seafloor sediment samples were collected by dredge, sediment grabs and core-tops. Deeper sediments came from drilling cores. Existing databases provided a foundation for this compilation, particularly ForCenS for surface sediments (Siccha & Kucera, 2017) and FORCIS for water-column collections (de Garidel-Thoron et al., 2022; Chaabane et al., 2022, 2023). These records were supplemented with occurrences from the literature, PANGEA, and cruise reports of the Deep Sea Drilling Project (DSDP) / Ocean Drilling Program (ODP). Searches were conducted in October 2022 using Google Scholar, GBIF, EOL (Encyclopedia of Life, "http://eol.org", which includes records from the Smithsonian NMNH). Where available, we include information on the abundance of G. cavernula in each collection, and indicate whether photographic evidence (or drawings) could be found to support the identification. Globorotalia crozetensis Thompson, 1973 (reclassified as G. cavernula by Brummer & Kučera, 2022) and closely related Globorotalia petaliformis Boltovskoy, 1974 were also included in compilation.
    Keywords: 15-147; 154-925; 164-997A; 180-1108B; 26-253; 26-254; 26-258A; 2803; 2804; 29-284; 40-362A; 49-411A; 49-412; 54-423; 54-424; 54-425; 73-519; Abundance; abundance data; Abundance per volume; Age, comment; Antarctic Ocean/Tasman Sea/PLATEAU; ATLANTIS_II_cruise31_36; Author(s); Be67_EL_10-1-130; Be67_EL_10-1-131; Be67_EL_10-19-186; Be67_EL_10-19-187; Be67_EL_10-20-190; Be67_EL_10-2-133; Be67_EL_10-24-208; Be67_EL_10-28-219; Be67_EL_10-29-221; Be67_EL_10-31-225; Be67_EL_10-31-226; Be67_EL_10-31-227; Be67_EL_10-3-136; Be67_EL_10-32-230; Be67_EL_10-4-139; Be67_EL_10-5-141; Be67_EL_11-5-249; Be67_EL_13-1-443; Be67_EL_13-2-449; Be67_EL_13-3-456; Be67_EL_13-6-474; Be67_EL_14-4-594; Be67_EL_15-17-806; Be67_EL_15-23-843; Be67_EL_15-26-864; Be67_EL_15-5-751; Be67_EL_15-5-752; Be67_EL_17-34-1112; Be67_EL_18-1-1137; Be67_EL_18-2-1138; Be67_EL_18-3-1150; Be67_EL_19-1171; Be67_EL_19-13-1233; Be67_RC9_80; Be67_RC9_92; Be67_V16_202; BOFS31/1K; BOFS31#1; Caribbean Sea/RIDGE; CD53; Charles Darwin; Closing Discovery net, Manufacturer unknown, N70V; Comment; COMPCORE; Composite Core; Core tops; CP_trap; Cruise/expedition; Depth, description; Disc2_1951_2803; Disc2_1951_2804; DRILL; Drilling/drill rig; EL 10-1-130; EL 10-1-131; EL 10-19-186; EL 10-19-187; EL 10-20-190; EL 10-2-133; EL 10-24-208; EL 10-28-219; EL 10-29-221; EL 10-31-225; EL 10-31-226; EL 10-31-227; EL 10-3-136; EL 10-32-230; EL 10-4-139; EL 10-5-141; EL 11-5-249; EL 13-1-443; EL 13-2-449; EL 13-3-456; EL 13-6-474; EL 14-4-594; EL 15-17-806; EL 15-23-843; EL 15-26-864; EL 15-5-751; EL 15-5-752; EL 17-34-1112; EL 18-1-1137; EL 18-2-1138; EL 18-3-1150; EL 19-1171; EL 19-13-1233; ELT10; ELT11; ELT13; ELT14; ELT15; ELT17; ELT18; ELT19; Eltanin; Event label; GeoB1728-3; Giant box corer; GIK15612-2; GIK15637-1; GIK15667-1; GIK15669-2; GIK15672-2; GIK17933-2; GKG; Globorotalia cavernula; Globorotalia crozetensis; Globorotalia petaliformis; Glomar Challenger; Gravity corer (Kiel type); Hayward86_station17; Indian Ocean//PLATEAU; Indian Ocean//RIDGE; Joides Resolution; KAL; Kasten corer; Knorr73_MOC131; KOL; LATITUDE; Leg15; Leg154; Leg164; Leg180; Leg26; Leg29; Leg40; Leg49; Leg54; Leg73; LONGITUDE; M20/2; M35/1; M35027-1; M53; M53_167; M53_169; M53_172-1; M57; M6; M9; Meteor (1964); Meteor (1986); MOC; MOCNESS opening/closing plankton net; MONITOR MONSUN; Namibia Continental Margin; net tows; Nicaraguan Rise, North Atlantic Ocean; North Atlantic; North Atlantic/BASIN; North Atlantic/FRACTURE ZONE; Northeast Atlantic; North Pacific/MOUND; North Pacific/SEDIMENT POND; Number of specimens; occurrence data; Ocean and sea region; off West Africa; Optional event label; PC; Persistent Identifier; Piston corer; Piston corer (Kiel type); PLA; planktic foraminifera; Plankton net; R/V_Knorr_73_MOC131; RC08; RC08-39; RC 9-80; RC 9-92; Reference/source; Robert Conrad; S. A. Agulhas II; Sample method; Sediment cores; Sediment sample; SES; Site; SL; SO95; Solomon Sea; Sonne; South Atlantic/RIDGE; South Atlantic Ocean; South China Sea; Species; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); station 17; Trap; TRAP; Uniform resource locator/link to reference; V16; V 16-202; van Veen Grab; Vema; VGRAB; VOY016; VOY016_W2; VOY016_W3; VOY019; VOY019_M6; VOY019_M9; W2; W3
    Type: Dataset
    Format: text/tab-separated-values, 1061 data points
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  • 10
    Publication Date: 2024-06-01
    Keywords: Age, 230Th/U Thorium-Uranium; Age, dated; Age, dated standard deviation; Comment; Corrected, using the decay constants by Cheng et al. (2000); Cueva Larga, Puerto Rico; DISTANCE; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Laboratory code/label; PR-LA-1; Sample ID; speleothem; Speleothem sample; SPS; Thorium-230/Thorium-232 activity ratio; Thorium-230/Thorium-232 activity ratio, standard deviation; Thorium-230/Uranium-238 activity ratio; Thorium-230/Uranium-238 activity ratio, standard deviation; Thorium-232; Thorium-232, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-234/Uranium-238 activity ratio (0); Uranium-234/Uranium-238 activity ratio (0), standard deviation; Uranium-238; Uranium-238, standard deviation; Uranium-thorium isotope dilution measurement by MC-ICPMS
    Type: Dataset
    Format: text/tab-separated-values, 1289 data points
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