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  • Forschungsdaten  (46)
Publikationsart
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Erscheinungszeitraum
  • 1
    Publikationsdatum: 2023-01-30
    Beschreibung: Here we present zircon petrochronological data, tephra whole-rock/glass compositions, and amphibole thermobarometry comprising the last four explosive eruptions of Ilopango Caldera in El Salvador (Tierra Blanca eruptive suite, TB). Our datasets include 238U-230Th disequilibrium geochronology, trace-elements, and oxygen isotope compositions from polished and unpolished zircon crystals analyzed using a CAMECA IMS 1280-HR secondary ion mass spectrometer (SIMS) at Heidelberg University, Germany. Additionally, pumice clasts whole-rock chemical analyses from the TB suite were performed at the German Research Centre for Geosciences (GFZ) using a PANalytical AXIOS Advanced wavelength-dispersive spectrometer, whereas major and trace-elements, glass shard, and mineral compositions were collected using an electron microprobe analysis (EMPA) at GEOMAR - Helmholtz-Centre for Ocean Research Kiel and by Laser Ablation Inductively Coupled Plasma - Mass Spectrometry (LA-ICP-MS) at Institute of Earth Sciences, Academia Sinica in Taipei. Whole-rock Sr-Nd isotope determinations were carried out at Departamento de Geología, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE; Mexico) with a Nu-Instruments thermal ionization mass spectrometer (Nu-TIMS), whereas whole-rock U-series were determined using a ThermoFisher Neptune inductively-coupled mass-spectrometer multi-collector (ICP-MS-MC) at the University of Wyoming (UWYO, USA).
    Schlagwort(e): Central America; E009; E012; E014; E015; E017; E021; E023; E044; E047; E053; Geochemistry; geochronology; GLASS; ROCK; Rock sample; TB_E020; TB_E021; TB_E022; TB_E029; TB_E032; TB_E033; TB_E035; TB_E038; TB_E039; TB_E040; TB_E042; TB_E043; TB_E044; TB_E078; TB_E079; TB_E084; zircon
    Materialart: Dataset
    Format: application/zip, 8 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    Publikationsdatum: 2023-01-30
    Beschreibung: This dataset includes results from oxygen isotope compositions from zircon crystal interiors (polished sections) of the Tierra Blanca Joven (TBJ) eruption from Ilopango caldera in El Salvador. Zircon crystals were analyzed employing Secondary Ion Mass Spectrometry at Heidelberg University.
    Schlagwort(e): Central America; Comment; Domain, mineralogy; Geochemistry; geochronology; GLASS; ROCK; Rock sample; Sample code/label; TB_E17-32; zircon; δ18O; δ18O, standard deviation
    Materialart: Dataset
    Format: text/tab-separated-values, 264 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    Publikationsdatum: 2023-01-30
    Beschreibung: This dataset includes results from U-Pb dating from zircon crystal interiors (polished sections) of the Tierra Blanca Joven eruption (TBJ) from Ilopango caldera in El Salvador. Zircon crystals were analyzed employing Secondary Ion Mass Spectrometry at Heidelberg University.
    Schlagwort(e): Age, dated; Age, dated standard error; Central America; Comment; Correlation; Domain, mineralogy; Geochemistry; geochronology; GLASS; Lead-204/Lead-206, standard error; Lead-204/Lead-206 ratio; Lead-207/Lead-206, standard error; Lead-207/Lead-206 ratio; Lead-208/Lead-206 ratio; Lead-208/Lead-206 ratio, standard error; ROCK; Rock sample; Sample code/label; TB_E17-32; Thorium/Uranium ratio; Uranium; Uranium-238/Lead-206, standard error; Uranium-238/Lead-206 ratio; zircon
    Materialart: Dataset
    Format: text/tab-separated-values, 473 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 4
    Publikationsdatum: 2023-02-12
    Beschreibung: This dataset includes results from U-Th disequilibria dating from zircon rims (outermost crystal face) and crystal interiors (polished crystals) of the last four explosive silicic eruptions from Ilopango caldera in El Salvador (TBJ, TB2, TB3, and TB4). Zircon crystals were analyzed employing Secondary Ion Mass Spectrometry at Heidelberg University.
    Schlagwort(e): Age, dated; Age, dated, error to older; Age, dated, error to younger; Central America; Comment; Domain, mineralogy; Event label; Geochemistry; geochronology; GLASS; ROCK; Rock sample; Sample code/label; Sample type; TB_E17-1; TB_E17-17; TB_E17-32; TB_E17-4; Thorium-230/Thorium-232 activity ratio; Thorium-230/Thorium-232 activity ratio, standard error; Uranium; Uranium-238/Thorium-232 activity ratio; Uranium-238/Thorium-232 activity ratio, standard error; zircon; Zircon-melt model isochron slope; Zircon-melt model isochron slope, standard error
    Materialart: Dataset
    Format: text/tab-separated-values, 3144 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 5
    Publikationsdatum: 2023-02-12
    Beschreibung: This dataset includes results from trace element concentrations from zircon rims (outermost crystal face) and crystal interiors (polished sections) of the last four explosive silicic eruptions from Ilopango caldera (TBJ, TB2, TB3, and TB4) in El Salvador. Zircon crystals were analyzed employing Secondary Ion Mass Spectrometry at Heidelberg University.
    Schlagwort(e): Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, dated standard error; Central America; Cerium; Cerium, standard error; Comment; Domain, mineralogy; Dysprosium; Dysprosium, standard error; Erbium; Erbium, standard error; Europium; Europium, standard error; Europium anomaly; Europium anomaly, standard error; Event label; Gadolinium; Gadolinium, standard error; Geochemistry; geochronology; GLASS; Hafnium; Hafnium, standard error; Holmium; Holmium, standard error; Iron; Iron, standard error; Lanthanum; Lanthanum, standard error; Light rare-earth elements index; Lutetium; Lutetium, standard error; Magnesium; Magnesium, standard error; Manganese; Manganese, standard error; Neodymium; Neodymium, standard error; Phosphorus; Phosphorus, standard error; Praseodymium; Praseodymium, standard error; ROCK; Rock sample; Samarium; Samarium, standard error; Sample code/label; Sample type; TB_E17-1; TB_E17-17; TB_E17-32; TB_E17-4; Terbium; Terbium, standard error; Thorium; Thorium, standard error; Thorium/Uranium, standard error; Thorium/Uranium ratio; Thulium; Thulium, standard error; Ti-in-zircon temperature, calculated; Ti-in-zircon temperature, calculated, error; Titanium; Titanium, standard error; Uranium; Uranium, standard error; Ytterbium; Ytterbium, standard error; Ytterbium/Dysprosium, standard error; Ytterbium/Dysprosium ratio; Yttrium; Yttrium, standard error; zircon; Zirconium/Hafnium, standard error; Zirconium/Hafnium ratio; δ18O; δ18O, standard deviation
    Materialart: Dataset
    Format: text/tab-separated-values, 11956 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    Publikationsdatum: 2023-02-12
    Beschreibung: This dataset includes results from U-series and Sr-Nd whole-rock isotope compositions of the last four explosive silicic eruptions from Ilopango caldera in El Salvador (TBJ, TB2, TB3, and TB4). Sr and Nd isotope ratios were measured with a Nu Instruments thermal ionization mass spectrometer (Nu-TIMS) at Departamento de Geología, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE) in the state of Baja California (Mexico), whereas U and Th concentrations and isotopes were measured at University of Wyoming (UWYO) were measured by isotope dilution using a ThermoFisher Neptune ICP-MS multicollector.
    Schlagwort(e): Age, dated; Central America; Event label; Geochemistry; geochronology; GLASS; Neodymium-144/Neodymium-143; Neodymium-144/Neodymium-143, standard error; Replicate; ROCK; Rock sample; Sample code/label; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard error; TB_E17-1; TB_E17-17; TB_E17-32; TB_E17-4; Thorium; Thorium, standard error; Thorium-230/Thorium-232 activity ratio; Thorium-230/Thorium-232 activity ratio, standard error; Thorium-230/Uranium-238 activity ratio; Thorium-230/Uranium-238 activity ratio, standard error; Type; Unit; Uranium; Uranium, standard error; Uranium/Thorium, standard error; Uranium/Thorium ratio; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard error; Uranium-238/Thorium-232 activity ratio; Uranium-238/Thorium-232 activity ratio, standard error; zircon
    Materialart: Dataset
    Format: text/tab-separated-values, 139 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    Publikationsdatum: 2023-02-12
    Beschreibung: This dataset includes results from amphibole geothermobarometry of explosive silicic eruptions from Ilopango caldera in El Salvador (TBJ, TB2, TB3, and TB4). Amphibole compositions were analyzed employing a JEOL JXA 8200 wavelength dispersive microprobe at the GEOMAR - Helmholtz-Centre for Ocean Research Kiel.
    Schlagwort(e): Aluminium oxide; Calcium oxide; Central America; Chlorine; Chromium(III) oxide; Depth, continental, geothermobarometry; Depth, oceanic, geothermobarometry; E012; E014; Eruption; Event label; Fluorine; Fugacity of oxygen, logarithm; Fugacity of oxygen, logarithm, uncertainty; Fugacity of oxygen, relative; Geochemistry; geochronology; GLASS; Iron oxide, FeO; Magnesium oxide; Manganese oxide; Melt water content; Melt water content, uncertainty; Potassium oxide; Pressure, calculated; Pressure, calculated, uncertainty; ROCK; Rock sample; Sample code/label; Sample ID; Silicon dioxide; Sodium oxide; TB_E029; TB_E032; TB_E042; TB_E17-4; Temperature, calculated; Temperature, calculated, uncertainty; Titanium dioxide; Total; zircon
    Materialart: Dataset
    Format: text/tab-separated-values, 1956 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    Publikationsdatum: 2023-07-10
    Beschreibung: This dataset includes results from X-ray fluorescence (XRF) analyses of the last four explosive silicic eruptions from Ilopango caldera in El Salvador (TBJ, TB2, TB3, and TB4). Samples were analyzed employing a PANalytical AXIOS Advanced wavelength-dispersive spectrometer.
    Schlagwort(e): Aluminium oxide; Antimony; Barium; Caesium; Calcium oxide; Carbon dioxide; Central America; Cerium; Chromium; Cobalt; Copper; Dysprosium; E009; E012; E014; E015; E017; E021; E023; E044; E047; E053; Erbium; Europium; Event label; Gadolinium; Gallium; Geochemistry; geochronology; GLASS; Hafnium; Holmium; Iron oxide, Fe2O3; Lanthanum; Latitude of event; Lead; Lithium; Longitude of event; Lutetium; Magnesium oxide; Manganese oxide; Molybdenum; Neodymium; Nickel; Niobium; Oxides, total; PANalytical AXIOS Advanced wavelength-dispersive spectrometer; Phosphorus pentoxide; Potassium oxide; Praseodymium; ROCK; Rock sample; Rubidium; Samarium; Sample code/label; Scandium; Silicon dioxide; Sodium oxide; Stratigraphy; Strontium; Tantalum; TB_E020; TB_E021; TB_E022; TB_E029; TB_E032; TB_E033; TB_E035; TB_E038; TB_E039; TB_E040; TB_E042; TB_E043; TB_E044; TB_E078; TB_E079; TB_E084; TB_E17-1; TB_E17-17; Terbium; Thallium; Thorium; Thulium; Tin; Titanium dioxide; Tungsten; Unit; Uranium; Vanadium; Water in rock; X-ray fluorescence (XRF); Ytterbium; Yttrium; Zinc; zircon; Zirconium
    Materialart: Dataset
    Format: text/tab-separated-values, 1043 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 9
    Publikationsdatum: 2023-07-10
    Beschreibung: This dataset includes results from glass major- and trace-element compositions of the last four explosive silicic eruptions from Ilopango caldera in El Salvador (TBJ, TB2, TB3, and TB4). Major elements in the glass shards were analyzed employing a JEOL JXA 8200 wavelength dispersive microprobe at the GEOMAR - Helmholtz-Centre for Ocean Research Kiel, whereas trace-elements were determined by Laser Ablation Inductively Coupled Plasma - Mass Spectrometry (LA-ICP-MS) at Institute of Earth Sciences, Academia Sinica in Taipei (Taiwan).
    Schlagwort(e): Aluminium oxide; Barium; Barium/Cerium ratio; Barium/Lanthanum ratio; Barium/Niobium ratio; Barium/Rubidium ratio; Barium/Thorium ratio; Barium/Zirconium ratio; Caesium; Calcium; Calcium oxide; Central America; Cerium; Cerium/Europium ratio; Cerium/Hafnium ratio; Cerium/Lead ratio; Cerium/Uranium ratio; Cerium/Ytterbium ratio; Chromium; Cobalt; Dysprosium; Dysprosium/Lutetium ratio; Erbium; Europium; Event label; Gadolinium; Geochemistry; geochronology; GLASS; Hafnium; Holmium; Iron oxide, FeO; Lanthanum; Lanthanum/Niobium ratio; Lanthanum/Samarium ratio; Lanthanum/Thorium ratio; Lanthanum/Ytterbium ratio; Lead; Lead/Neodymium ratio; Lithium; Lithium/Yttrium ratio; Lutetium; Lutetium/Hafnium ratio; Magnesium oxide; Manganese oxide; Neodymium; Niobium; Niobium/Rubidium ratio; Niobium/Tantalum ratio; Niobium/Thorium ratio; Niobium/Titanium ratio; Niobium/Uranium ratio; Niobium/Zirconium ratio; Oxides, total; Phosphorus pentoxide; Potassium/Lanthanum ratio; Potassium oxide; Potassium oxide and Sodium oxide; Praseodymium; ROCK; Rock sample; Rubidium; Rubidium/Caesium ratio; Rubidium/Hafnium ratio; Rubidium/Lanthanum ratio; Rubidium/Neodymium ratio; Rubidium/Strontium ratio; Rubidium/Thorium ratio; Samarium; Samarium/Neodymium ratio; Samarium/Ytterbium ratio; Samarium/Zirconium ratio; Sample code/label; Scandium; Silicon dioxide; Sodium oxide; Strontium; Strontium/Neodymium ratio; Tantalum; Tantalum/Uranium ratio; TB_E17-1; TB_E17-17; TB_E17-32; TB_E17-4; TB_TB4; Terbium; Texture; Thorium; Thorium/Tantalum ratio; Thulium; Titanium/Zirconium ratio; Titanium dioxide; Unit; Uranium; Uranium/Lanthanum ratio; Uranium/Lead ratio; Uranium/Thorium ratio; Ytterbium; Yttrium; zircon; Zirconium; Zirconium/Caesium ratio; Zirconium/Hafnium ratio; Zirconium/Niobium ratio
    Materialart: Dataset
    Format: text/tab-separated-values, 3699 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    Publikationsdatum: 2023-09-02
    Beschreibung: We present geochemical data collected from volcanic ash-bearing sediments on the upper slope of the northern Hikurangi margin during the RV SONNE SO247 expedition in 2016. Gravity coring and seafloor drilling with the MARUM-MeBo200 allowed for collection of sediments down to 105 meters below seafloor (mbsf). Release of dissolved Sr2+ with isotopic composition enriched in 86Sr (87Sr/86Sr minimum = 0.708461 at 83.5 mbsf) is indicative of ash alteration. This reaction releases other cations in the 30-70 mbsf depth interval as reflected by maxima in pore-water Ca2+ and Ba2+ concentrations. In addition, we posit that Fe(III) in volcanogenic glass serves as an electron acceptor for methane oxidation, a reaction that releases Fe2+ measured in the pore fluids to a maximum concentration of 184 μM. Several lines of evidence support our proposed coupling of ash alteration with Fe-mediated anaerobic oxidation of methane (Fe-AOM) beneath the sulfate-methane transition (SMT), which lies at ∼7 mbsf at this site. In the ∼30-70 mbsf interval, we observe a concurrent increase in Fe2+ and a depletion of CH4 with a well-defined decrease in C-CH4 values indicative of microbial fractionation of carbon. The negative excursions in C values of both DIC and CH4 are similar to that observed by sulfate-driven AOM at low SO concentrations, and can only be explained by the microbially-mediated carbon isotope equilibration between CH4 and DIC. Mass balance considerations reveal that the iron cycled through the coupled ash alteration and AOM reactions is consumed as authigenic Fe-bearing minerals. This iron sink term derived from the mass balance is consistent with the amount of iron present as carbonate minerals, as estimated from sequential extraction analyses. Using a numerical modeling approach we estimate the rate of Fe-AOM to be on the order of 0.4 μmol cm−2 yr−1, which accounts for ∼12% of total CH4 removal in the sediments. Although not without uncertainties, the results presented reveal that Fe-AOM in ash-bearing sediments is significantly lower than the sulfate-driven CH4 consumption, which at this site is 3.0 μmol cm−2 yr−1. We highlight that Fe(III) in ash can potentially serve as an electron acceptor for methane oxidation in sulfate-depleted settings. This is relevant to our understanding of C-Fe cycling in the methanic zone that typically underlies the SMT and could be important in supporting the deep biosphere.
    Schlagwort(e): Center for Marine Environmental Sciences; DSRV SONNE; Hikurangi Margin; MARUM; MeBo200; Methane; New Zealand; SlamZ project; SO247; stable carbon isotopic composition; Tuaheni slide complex
    Materialart: Dataset
    Format: application/zip, 8 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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