Simon, Klaus

[["dc.bibliographiccitation.firstpage","48"],["dc.bibliographiccitation.journal","Precambrian Research"],["dc.bibliographiccitation.lastpage","62"],["dc.bibliographiccitation.volume","255"],["dc.contributor.author","Duda, Jan-Peter"],["dc.contributor.author","Blumenberg, Martin"],["dc.contributor.author","Thiel, Volker"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Zhu, Maoyan"],["dc.contributor.author","Reitner, Joachim"],["dc.date.accessioned","2018-11-07T09:31:39Z"],["dc.date.available","2018-11-07T09:31:39Z"],["dc.date.issued","2014"],["dc.description.abstract","Despite the importance of palaeoecosystems with Ediacara-type fossils for the early evolution of metazoans, only little is known about the interplay of geological and biological processes in these environments. The reason is that sedimentary structures, biogenic structures and (bio-) geochemical signatures (e.g. hydrocarbon biomarkers) are commonly not well preserved due to the predominance of volcanic and siliciclastic lithologies. The Shibantan Member (Dengying Formation, South China) is one of only few carbonate settings with Ediacara-type organisms worldwide and its lithology promises an excellent preservation of sedimentary fades and (bio-) geochemical signatures. Here we provide the first comprehensive geobiological characterisation of the Shibantan Member in order to reconstruct the interplay between sedimentary and (bio-) geochemical processes and to assess the microbial activities in the palaeoecosystem with Ediacara-type fossils. Fades analyses revealed that carbonate and organic matter were autochthonously formed by (bio-) geochemical processes linked to microbial mats. However, the material was frequently reworked and re-deposited within the same setting (i.e. para-autochthonous) as evidenced by small-scale (hummocky-) cross stratification, erosional contacts, lenticular bedding and load casts. Negative Ce anomalies (Ce/Ce ) and low V/Cr ratios demonstrate that molecular O-2 was present in the water column, whereas characteristic Ni/Co-, V/(V + Ni), and V/Sc ratios suggest the contemporaneous presence of sub- to anoxic water. Taken together, these observations imply a temporarily stratified water body frequently mixed and ventilated by storms. C-13-enrichments in the Shibantan carbonates (delta C-13 = +3.29 to + 3.98 parts per thousand, VPDB) together with C-13-depletions of syngenetic n-alkanes cleaved from the extraction residue using catalytic hydropyrolysis (HyPy; delta C-13 = -31.7 to -363 parts per thousand, VPDB) could indicate a significant withdrawal of C-12 by primary producers that thrived within the mats. At the same time, sulphurised biomarkers in the bitumen and HyPy-pyrolysate hint at organic matter decomposition and concomitant sulphide production by sulphate reducing bacteria. When oxygen was available at the sediment-water interface due to mixing by storms, sulphide oxidising bacteria were possibly temporarily favoured. The results demonstrated that palaeoenvironmental conditions dynamically changed through a complex interplay of biogenic and abiogenic processes. (C) 2014 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.precamres.2014.09.012"],["dc.identifier.isi","000347578000003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31580"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1872-7433"],["dc.relation.issn","0301-9268"],["dc.title","Geobiology of a palaeoecosystem with Ediacara-type fossils: The Shibantan Member (Dengying Formation, South China)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","67"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Petrology"],["dc.bibliographiccitation.lastpage","98"],["dc.bibliographiccitation.volume","53"],["dc.contributor.author","Slaby, Ewa"],["dc.contributor.author","Martin, Herve"],["dc.contributor.author","Hamada, Morihisa"],["dc.contributor.author","Smigielski, Michal"],["dc.contributor.author","Domonik, Andrzej"],["dc.contributor.author","Goetze, Jens"],["dc.contributor.author","Hoefs, Jochen"],["dc.contributor.author","Halas, Stanislaw"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Devidal, Jean-Luc"],["dc.contributor.author","Moyen, Jean-Francois"],["dc.contributor.author","Jayananda, Mudlappa"],["dc.date.accessioned","2018-11-07T09:15:55Z"],["dc.date.available","2018-11-07T09:15:55Z"],["dc.date.issued","2012"],["dc.description.abstract","Growth and regrowth textures, trace element and oxygen isotope compositions, and water content or species have been studied in alkali feldspars from the late Archaean Closepet igneous bodies. Feldspar crystals grew from mixed magmas that are characterized by a high degree of homogenization. The 3D depiction of trace element distribution indicates that the crystallization process was followed by interaction with fluids. The magmatic system involved in feldspar formation shows non-linear dynamics. The interaction with fluids is also deterministic, but in contrast to magmatic crystallization, it shows an increasing persistency in element behaviour. The degree of persistency of the element activities in both processes has been calculated using the Hurst exponent. The recrystallization (regrowth) process induced by fluids proceeded along crystal fractures and cleavages, causing selective enrichment in large ion lithophile elements (light rare earth elements), Pb, Y, and in various water species. It did not change the feldspar oxygen isotope signature. In turn, the incorporation of hydrogen species into feldspar domains reduced Al-O--Al defect densities in the structure, decreasing their luminescence. Water speciation shows persistent behaviour during heating, the process being reversible at least up to 600 degrees C. Carbonate crystals with a mantle isotope signature are associated with the re-equilibrated feldspar domains. The feldspar compositions, the abundance of water species in them and the refractory nature of the residuum after heating, the unchanged oxygen isotopes and the mantle signature of co-precipitated carbonates testify that the observed recrystallization has taken place at temperatures above 600 degrees C with H2O-CO2 fertile, mantle-derived fluids. The paper draws special attention to some methodological aspects of the problem. The multi-method approach used here (major element, trace element and isotope geochemistry, infra-red, cathodoluminescence, 3D depiction of geochemical data and fractal statistics) may help to recognize and separate the various processes throughout the alteration history of the pluton."],["dc.description.sponsorship","IGSci PASci 'Hybrid'; IGSci PASci-CNRS-UMR [6524-LMV]"],["dc.identifier.doi","10.1093/petrology/egr056"],["dc.identifier.isi","000299347800004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/27815"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","0022-3530"],["dc.title","Evidence in Archaean Alkali Feldspar Megacrysts for High-Temperature Interaction with Mantle Fluids"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","85"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Lithos"],["dc.bibliographiccitation.lastpage","97"],["dc.bibliographiccitation.volume","105"],["dc.contributor.author","Slaby, Ewa"],["dc.contributor.author","Goetze, Jens"],["dc.contributor.author","Woerner, Gerhard"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Wrzalik, Roman"],["dc.contributor.author","Smigielski, Michal"],["dc.date.accessioned","2018-11-07T11:11:41Z"],["dc.date.available","2018-11-07T11:11:41Z"],["dc.date.issued","2008"],["dc.description.abstract","The crystallization history of zoned K-feldspar phenocrysts in microgranular magmatic enclaves in the Karkonosze granite (SW Poland) reveals that the crystals grew in stirred coeval magmas of contrasting compositions. The growth mechanism and crystal compositions are investigated using cathodoluminescence and profiling by Electron Microprobe and Laser Ablation ICP-MS. These methods provide insight into the crystallization process and the varying compositions of the host melt. The phenocrysts show two types of growth patterns - with or without resorption interfaces. The trace-element distribution, heterogeneous across different zones and within single phenocryst zones, reflects a dynamic process of crystal growth from compositionally heterogeneous magma. Hybridization is also reflected in the density of structural Al-O--Al defects - features that relate to coupled Ba-Al incorporation into the crystal structure. Differences in structural-defect densities and crystal composition trace the degree of hybridization in the granitic magma during the growth of the K-feldspar phenocrysts. (C) 2008 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","[BW 1642]; [BST 1241/8]; [NN307176633]"],["dc.identifier.doi","10.1016/j.lithos.2008.02.006"],["dc.identifier.isi","000260993100008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/53489"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0024-4937"],["dc.title","K-feldspar phenocrysts in microgranular magmatic enclaves: A cathodoluminescence and geochemical study of crystal growth as a marker of magma mingling dynamics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","153"],["dc.bibliographiccitation.journal","Precambrian Research"],["dc.bibliographiccitation.lastpage","164"],["dc.bibliographiccitation.volume","310"],["dc.contributor.author","Wudarska, Alicja"],["dc.contributor.author","Wiedenbeck, Michael"],["dc.contributor.author","Słaby, Ewa"],["dc.contributor.author","Lepland, Aivo"],["dc.contributor.author","Birski, Łukasz"],["dc.contributor.author","Simon, Klaus"],["dc.date.accessioned","2020-12-10T15:20:54Z"],["dc.date.available","2020-12-10T15:20:54Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1016/j.precamres.2018.02.021"],["dc.identifier.issn","0301-9268"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72850"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Halogen chemistry and hydrogen isotopes of apatite from the >3.7 Ga Isua supracrustal belt, SW Greenland"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","91"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Applied Physics A"],["dc.bibliographiccitation.lastpage","97"],["dc.bibliographiccitation.volume","111"],["dc.contributor.author","Hormes, J."],["dc.contributor.author","Roy, A."],["dc.contributor.author","Bovenkamp, G.-L."],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Kim, C.-Y."],["dc.contributor.author","Boerste, N."],["dc.contributor.author","Gai, S."],["dc.date.accessioned","2018-11-07T09:26:46Z"],["dc.date.available","2018-11-07T09:26:46Z"],["dc.date.issued","2013"],["dc.description.abstract","We have investigated four stained glass samples recovered from an archaeological excavation at the Cathedral in Paderborn (Germany) between 1978 and 1980. On two of the samples there are parts of paintings. Concentrations of major elements were determined using two independent techniques: LA-ICP-MS (a UV laser ablation microsampler combined with an inductively coupled plasma mass spectrometer) and synchrotron radiation X-ray excited X-ray fluorescence (SR-XRF). The SR-XRF data were quantified by using the program package PyMCA developed by the software group of the ESRF in Grenoble. Significant differences were found between the concentrations determined by the two techniques that can be explained by concentration gradients near the surface of the glasses caused, for example, by corrosion/leaching processes and the different surface sensitivities of the applied techniques. For several of the elements that were detected in the glass and in the colour pigments used for the paintings X-ray absorption near edge structure (XANES) spectra were recorded in order to determine the chemical speciation of the elements of interest. As was expected, most elements in the glass were found as oxides in their most stable form. Two notable exceptions were observed: titanium was not found as rutile-the most stable form of TiO2-but in the form of anatase, and lead was not found in one defined chemical state but as a complex mixture of oxide, sulphate, and other compounds."],["dc.identifier.doi","10.1007/s00339-012-7505-2"],["dc.identifier.isi","000316075700012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30377"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0947-8396"],["dc.title","Medieval glass from the Cathedral in Paderborn: a comparative study using X-ray absorption spectroscopy, X-ray fluorescence, and inductively coupled laser ablation mass spectrometry"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","693"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Contributions to Mineralogy and Petrology"],["dc.bibliographiccitation.lastpage","696"],["dc.bibliographiccitation.volume","164"],["dc.contributor.author","Wedepohl, Karl Hans"],["dc.contributor.author","Simon, Klaus"],["dc.date.accessioned","2019-07-09T11:40:50Z"],["dc.date.available","2019-07-09T11:40:50Z"],["dc.date.issued","2012"],["dc.description.abstract","During the Variscan orogeny in Central Europe, partial melting in the lower continental crust formed granitic magmas, which intruded into the upper crust and left compounds of Ca (plus Eu2+), Mg, etc. in the lower crust. From the late Paleozoic decomposition of the tonalitic upper crust, sedimentary graywackes were produced reflecting the composition of this crust. The repeated reworking of the sedimentary cover caused the formation of sands. Sandstones as their products of consolidation contain increasing fractions of quartz and decreasing feldspar from Carboniferous and Triassic to Cretaceous age. A distinct negative Eu anomaly characterizes the majority of these rocks. The latter is imprinted by the Variscan magmatism. Quartz as used for numerous Medieval wood ash glasses is marked for its Central European origin by a distinct negative Eu anomaly in contrast to many soda glasses produced outside Germany mostly with a small or none Eu anomaly."],["dc.identifier.doi","10.1007/s00410-012-0768-y"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11390"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58265"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1432-0967"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Chemical characteristics (REE, etc.) of Paleozoic and Mesozoic graywackes and sandstones from Central Europe"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","96"],["dc.bibliographiccitation.journal","Geochimica et Cosmochimica Acta"],["dc.bibliographiccitation.lastpage","109"],["dc.bibliographiccitation.volume","220"],["dc.contributor.author","Hetzinger, S."],["dc.contributor.author","Halfar, J."],["dc.contributor.author","Kronz, A."],["dc.contributor.author","Simon, K."],["dc.contributor.author","Adey, W.H."],["dc.contributor.author","Steneck, R.S."],["dc.date.accessioned","2020-12-10T14:24:13Z"],["dc.date.available","2020-12-10T14:24:13Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1016/j.gca.2017.09.044"],["dc.identifier.issn","0016-7037"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72185"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Reproducibility of Clathromorphum compactum coralline algal Mg/Ca ratios and comparison to high-resolution sea surface temperature data"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1095"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Environmental Earth Sciences"],["dc.bibliographiccitation.lastpage","1124"],["dc.bibliographiccitation.volume","69"],["dc.contributor.author","Graue, Birte"],["dc.contributor.author","Siegesmund, Siegfried"],["dc.contributor.author","Oyhantcabal, Pedro"],["dc.contributor.author","Naumann, R."],["dc.contributor.author","Licha, Tobias"],["dc.contributor.author","Simon, Klaus"],["dc.date.accessioned","2018-11-07T09:24:05Z"],["dc.date.available","2018-11-07T09:24:05Z"],["dc.date.issued","2013"],["dc.description.abstract","Severe stone deterioration is evident at the Cologne cathedral. In particular, the \"Drachenfels\" trachyte, which was the building material of the medieval construction period, shows significant structural deterioration as well as massive formation of gypsum crusts. The present article investigates crust formation on limestone, sandstone, and volcanic rock from the Cologne cathedral as well as from the Xanten and Altenberg cathedrals. These three buildings, showing varying degrees of deterioration, are located in different areas and exposed to varying industrial, urban, and rural pollution. Thin laminar and black framboidal crusts form on calcareous as well as silicate stone. The lack of a significant intrinsic calcium and sulfur source for the formation of the gypsum crusts on the Drachenfels trachyte indicates major extrinsic environmental impact: a sufficient offer of SO (x) from pollutant fluxes as well as external calcium sources (e.g., pollution, mortars, neighboring calcite stones). Chemical analyses reveal strong gypsum enrichment within the crusts as well as higher concentrations of lead and other pollutants (arsenic, antimony, bismuth, tin, etc.), which generally can be linked to traffic and industry. The formation of weathering crusts in an industrial environment is clearly distinguishable from that in rural areas. Scanning electron microscopy observations confirm that the total amount of pollution is less at the Altenberg cathedral than at the Cologne and Xanten cathedrals. XRF analyses show that the formation of gypsum occurs in lower amounts at Altenberg. This correlates well with the measured SO2 content and the intensity of the decay at the different locations. Furthermore, the different types of crusts, e.g., framboidal and laminar, can be differentiated and assigned to the different locations. The black weathering crusts on the silicate Drachenfels trachyte contribute to the degradation of the historic building material. They enhance mechanical moisture-related deterioration processes and the decay by chemical corrosion of rock-forming minerals. Although SO2 concentrations in air have shown a strong decrease over the past 30 years, degradation in connection with weathering crusts is still observed. This indicates that not only contemporary or recent emissions, but also past pollutant concentrations have to be considered."],["dc.description.sponsorship","Deutsche Bundesstiftung Umwelt [DBU-AZ-28253-45]"],["dc.identifier.doi","10.1007/s12665-012-2161-6"],["dc.identifier.isi","000319765600004"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10396"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29734"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1866-6299"],["dc.relation.issn","1866-6280"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.relation.orgunit","Abteilung Strukturgeologie und Geodynamik"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","The effect of air pollution on stone decay: the decay of the Drachenfels trachyte in industrial, urban, and rural environments-a case study of the Cologne, Altenberg and Xanten cathedrals"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Journal of Quaternary Science"],["dc.contributor.author","Ivanova, Varvara"],["dc.contributor.author","Shchetnikov, Alexander"],["dc.contributor.author","Semeney, Elena"],["dc.contributor.author","Filinov, Ivan"],["dc.contributor.author","Simon, Klaus"],["dc.date.accessioned","2022-05-02T08:02:18Z"],["dc.date.available","2022-05-02T08:02:18Z"],["dc.date.issued","2022"],["dc.identifier.doi","10.1002/jqs.3428"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/107279"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-561"],["dc.relation.eissn","1099-1417"],["dc.relation.issn","0267-8179"],["dc.title","LA‐ICP‐MS analysis of rare earth elements in tooth enamel of fossil small mammals (Ust‐Oda section, Fore‐Baikal area, Siberia): paleoenvironmental interpretation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Geochimica et Cosmochimica Acta"],["dc.bibliographiccitation.volume","73"],["dc.contributor.author","Heim, Christine"],["dc.contributor.author","Lausmaa, Jukka"],["dc.contributor.author","Sjovall, Peter"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Thiel, Volker"],["dc.date.accessioned","2018-11-07T08:29:13Z"],["dc.date.available","2018-11-07T08:29:13Z"],["dc.date.issued","2009"],["dc.identifier.isi","000267229901256"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16597"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.publisher.place","Oxford"],["dc.relation.conference","19th Annual VM Goldschmidt Conference"],["dc.relation.eventlocation","Davos, SWITZERLAND"],["dc.title","Traces of a fossil deep biosphere in fracture fillings of the Aspo Diorite (Sweden)"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]