Now showing 1 - 7 of 7
  • 2021Journal Article
    [["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Paleoceanography and Paleoclimatology"],["dc.bibliographiccitation.volume","36"],["dc.contributor.author","Fischer, Meike B."],["dc.contributor.author","Oeser, Martin"],["dc.contributor.author","Weyer, Stefan"],["dc.contributor.author","Folco, Luigi"],["dc.contributor.author","Peters, Stefan T. M."],["dc.contributor.author","Zahnow, Fabian"],["dc.contributor.author","Pack, Andreas"],["dc.date.accessioned","2021-06-01T09:41:37Z"],["dc.date.available","2021-06-01T09:41:37Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1029/2020PA004159"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/84980"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.eissn","2572-4525"],["dc.relation.issn","2572-4517"],["dc.title","I‐Type Cosmic Spherules as Proxy for the Δ′ 17 O of the Atmosphere—A Calibration With Quaternary Air"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2016Journal Article
    [["dc.bibliographiccitation.firstpage","1495"],["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Rapid Communications in Mass Spectrometry"],["dc.bibliographiccitation.lastpage","1504"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Pack, Andreas"],["dc.contributor.author","Tanaka, Ryoji"],["dc.contributor.author","Hering, Markus"],["dc.contributor.author","Sengupta, Sukanya"],["dc.contributor.author","Peters, Stefan"],["dc.contributor.author","Nakamura, Eizo"],["dc.date.accessioned","2018-11-07T10:11:34Z"],["dc.date.available","2018-11-07T10:11:34Z"],["dc.date.issued","2016"],["dc.description.abstract","RATIONALE: The precise determination of Delta'O-17 values in terrestrial material is becoming increasingly important to understand the mass-dependent fractionation processes that cause variations in oxygen isotope ratios. San Carlos olivine is widely used as the reference material for oxygen isotope measurements of terrestrial and extraterrestrial materials. We report new Delta'O-17 values for San Carlos olivine that were independently determined in two different laboratories (Geoscience Center [GZG], University of Gottingen) and Institute for Study of the Earth's Interior [ISEI], Okayama University, Misasa) in direct comparison with VSMOW2 and SLAP2 water standards. METHODS: The delta O-17 and delta O-18 values of VSMOW2, SLAP2, GISP, and San Carlos olivine were determined relative to reference gas. In both laboratories, water and San Carlos olivine samples were prepared by BrF5 fluorination. In both laboratories, the O-2 released from water and olivine samples was passed through the same purification system and measured using the same mass spectrometer relative to the same reference gas. RESULTS: In both laboratories, the delta O-17(VSMOW2) and delta O-18 (VSMOW2) scales were slightly compressed with respect to the recommended composition of VSMOW2 and SLAP2. The new Delta'O-17(0.528) value (calculated from the VSMOW2-SLAP2 scaled 6 values) of San Carlos olivine from GZG was -36 +/- 9 ppm and, from ISEI, a value of -40 +/- 7 ppm (1(7 standard deviation) was determined. These values are similar to 50 ppm higher than previously reported from the same laboratories. Possible causes for the observed discrepancies are discussed. CONCLUSIONS: The results of this study in comparison with previous data from the same laboratories demonstrated that for high accuracy determination of Delta'O-17 values: (i) calibration of the reference gas relative to O-2 released from primary standards (VSMOW2, SLAP2) in the same laboratory is highly recommended, (ii) non-linearity of the mass spectrometer may not only affect delta O-17 and delta O-18 values but also Delta'O-17 values, and (iii) the VSMOW2-SLAP2 scaling should also be applied to analyses of rocks and minerals. Studies that are concerned with small differences in Delta'O-17 at similar delta O-18 values, however, are not affected by non-linearity of the mass spectrometer. Copyright (C) 2016 John Wiley & Sons, Ltd."],["dc.identifier.doi","10.1002/rcm.7582"],["dc.identifier.isi","000379974500007"],["dc.identifier.pmid","27321837"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40075"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1097-0231"],["dc.relation.issn","0951-4198"],["dc.title","The oxygen isotope composition of San Carlos olivine on the VSMOW2-SLAP2 scale"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]
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  • 2017-06-01Journal Article
    [["dc.bibliographiccitation.firstpage","15702"],["dc.bibliographiccitation.journal","Nature communications"],["dc.bibliographiccitation.lastpage","15702"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Pack, Andreas"],["dc.contributor.author","Höweling, Andres"],["dc.contributor.author","Hezel, Dominik C."],["dc.contributor.author","Stefanak, Maren T."],["dc.contributor.author","Beck, Anne-Katrin"],["dc.contributor.author","Peters, Stefan T. M."],["dc.contributor.author","Sengupta, Sukanya"],["dc.contributor.author","Herwartz, Daniel"],["dc.contributor.author","Folco, Luigi"],["dc.date.accessioned","2019-07-09T11:43:29Z"],["dc.date.available","2019-07-09T11:43:29Z"],["dc.date.issued","2017-06-01"],["dc.description.abstract","Molten I-type cosmic spherules formed by heating, oxidation and melting of extraterrestrial Fe,Ni metal alloys. The entire oxygen in these spherules sources from the atmosphere. Therefore, I-type cosmic spherules are suitable tracers for the isotopic composition of the upper atmosphere at altitudes between 80 and 115 km. Here we present data on I-type cosmic spherules collected in Antarctica. Their composition is compared with the composition of tropospheric O2. Our data suggest that the Earth's atmospheric O2 is isotopically homogenous up to the thermosphere. This makes fossil I-type micrometeorites ideal proxies for ancient atmospheric CO2 levels."],["dc.identifier.doi","10.1038/ncomms15702"],["dc.identifier.pmid","28569769"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14540"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58894"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","2041-1723"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject.ddc","550"],["dc.title","Tracing the oxygen isotope composition of the upper Earth's atmosphere using cosmic spherules"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]
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  • 2017Journal Article
    [["dc.bibliographiccitation.artnumber","227"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nature communications"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Magna, Tomáš"],["dc.contributor.author","Žák, Karel"],["dc.contributor.author","Pack, Andreas"],["dc.contributor.author","Moynier, Frédéric"],["dc.contributor.author","Mougel, Bérengère"],["dc.contributor.author","Peters, Stefan T. M."],["dc.contributor.author","Skála, Roman"],["dc.contributor.author","Jonášová, Šárka"],["dc.contributor.author","Mizera, Jiří"],["dc.contributor.author","Řanda, Zdeněk"],["dc.date.accessioned","2018-06-28T08:55:56Z"],["dc.date.available","2018-06-28T08:55:56Z"],["dc.date.issued","2017"],["dc.description.abstract","Chemical fingerprints of impacts are usually compromised by extreme conditions in the impact plume, and the contribution of projectile matter to impactites does not often exceed a fraction of per cent. Here we use chromium and oxygen isotopes to identify the impactor and impact-plume processes for Zhamanshin astrobleme, Kazakhstan. ε54Cr values up to 1.54 in irghizites, part of the fallback ejecta, represent the 54Cr-rich extremity of the Solar System range and suggest a CI-like chondrite impactor. Δ17O values as low as -0.22‰ in irghizites, however, are incompatible with a CI-like impactor. We suggest that the observed 17O depletion in irghizites relative to the terrestrial range is caused by partial isotope exchange with atmospheric oxygen (Δ17O = -0.47‰) following material ejection. In contrast, combined Δ17O-ε54Cr data for central European tektites (distal ejecta) fall into the terrestrial range and neither impactor fingerprint nor oxygen isotope exchange with the atmosphere are indicated.Identifying the original impactor from craters remains challenging. Here, the authors use chromium and oxygen isotopes to indicate that the Zhamanshin astrobleme impactor was a carbonaceous chrondrite by demonstrating that depleted 17O values are due to exchange with atmospheric oxygen."],["dc.identifier.doi","10.1038/s41467-017-00192-5"],["dc.identifier.pmid","28794408"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14651"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15152"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.eissn","2041-1723"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Zhamanshin astrobleme provides evidence for carbonaceous chondrite and post-impact exchange between ejecta and Earth's atmosphere"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2020Journal Article
    [["dc.bibliographiccitation.firstpage","85"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Minerals"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Whyatt, Laura"],["dc.contributor.author","Peters, Stefan"],["dc.contributor.author","Pack, Andreas"],["dc.contributor.author","Kirkland, Christopher L."],["dc.contributor.author","Balic-Zunic, Tonci"],["dc.contributor.author","Szilas, Kristoffer"],["dc.date.accessioned","2020-11-05T15:10:58Z"],["dc.date.available","2020-11-05T15:10:58Z"],["dc.date.issued","2020"],["dc.description.sponsorship","Villum Fonden"],["dc.identifier.doi","10.3390/min10010085"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/68505"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-352.8"],["dc.publisher","MDPI"],["dc.relation.eissn","2075-163X"],["dc.rights","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Metasomatic Reactions between Archean Dunite and Trondhjemite at the Seqi Olivine Mine in Greenland"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2022Journal Article
    [["dc.bibliographiccitation.artnumber","maps.13905"],["dc.bibliographiccitation.journal","Meteoritics & Planetary Science"],["dc.contributor.author","Bischoff, Addi"],["dc.contributor.author","Patzek, Markus"],["dc.contributor.author","Peters, Stefan T. M."],["dc.contributor.author","Barrat, Jean‐Alix"],["dc.contributor.author","Di Rocco, Tommaso"],["dc.contributor.author","Pack, Andreas"],["dc.contributor.author","Ebert, Samuel"],["dc.contributor.author","Jansen, Christian A."],["dc.contributor.author","Kmieciak, Kryspin"],["dc.date.accessioned","2022-09-01T09:50:43Z"],["dc.date.available","2022-09-01T09:50:43Z"],["dc.date.issued","2022"],["dc.description.sponsorship"," Alexander von Humboldt-Stiftung https://doi.org/10.13039/100005156"],["dc.description.sponsorship"," Deutsche Forschungsgemeinschaft https://doi.org/10.13039/501100001659"],["dc.identifier.doi","10.1111/maps.13905"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/113785"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-597"],["dc.relation.eissn","1945-5100"],["dc.relation.issn","1086-9379"],["dc.rights.uri","http://creativecommons.org/licenses/by-nc-nd/4.0/"],["dc.title","The chondrite breccia of Antonin (\n L4\n ‐5)—A new meteorite fall from Poland with a heterogeneous distribution of metal"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2019Journal Article
    [["dc.bibliographiccitation.artnumber","e0220390"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","PLOS ONE"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Sisma-Ventura, Guy"],["dc.contributor.author","Tütken, Thomas"],["dc.contributor.author","Peters, Stefan T. M."],["dc.contributor.author","Bialik, Or M."],["dc.contributor.author","Zohar, Irit"],["dc.contributor.author","Pack, Andreas"],["dc.date.accessioned","2019-08-05T11:39:26Z"],["dc.date.available","2019-08-05T11:39:26Z"],["dc.date.issued","2019"],["dc.description.abstract","Here we explore the carbon and oxygen isotope compositions of the co-existing carbonate and phosphate fractions of fish tooth enameloid as a tool to reconstruct past aquatic fish environments and harvesting grounds. The enameloid oxygen isotope compositions of the phosphate fraction (δ18OPO4) vary by as much as ~4‰ for migratory marine fish such as gilthead seabream (Sparus aurata), predominantly reflecting the different saline habitats it occupies during its life cycle. The offset in enameloid Δ18OCO3-PO4 values of modern marine Sparidae and freshwater Cyprinidae from the Southeast Mediterranean region vary between 8.1 and 11.0‰, similar to values reported for modern sharks. The mean δ13C of modern adult S. aurata and Cyprinus carpio teeth of 0.1±0.4‰ and -6.1±0.7‰, respectively, mainly reflect the difference in δ13C of dissolved inorganic carbon (DIC) of the ambient water and dietary carbon sources. The enameloid Δ18OCO3-PO4 and δ13C values of ancient S. aurata (Holocene) and fossil Luciobarbus sp. (Cyprinidae; mid Pleistocene) teeth agree well with those of modern specimens, implying little diagenetic alteration of these tooth samples. Paired δ18OPO4-δ13C data from ancient S. aurata teeth indicate that hypersaline water bodies formed in the Levant region during the Late Holocene from typical Mediterranean coastal water with high evaporation rates and limited carbon input from terrestrial sources. Sparid tooth stable isotopes further suggest that coastal lagoons in the Eastern Mediterranean had already formed by the Early Holocene and were influenced by terrestrial carbon sources. Overall, combined enameloid oxygen and carbon isotope analysis of fish teeth is a powerful tool to infer the hydrologic evolution of aquatic environments and assess past fishing grounds of human populations in antiquity."],["dc.identifier.doi","10.1371/journal.pone.0220390"],["dc.identifier.pmid","31365545"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16330"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62285"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.eissn","1932-6203"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Past aquatic environments in the Levant inferred from stable isotope compositions of carbonate and phosphate in fish teeth"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]
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