Wörner, Gerhard

[["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","198"],["dc.bibliographiccitation.journal","Journal of Asian Earth Sciences"],["dc.bibliographiccitation.lastpage","221"],["dc.bibliographiccitation.volume","78"],["dc.contributor.author","Xu, L."],["dc.contributor.author","Xiao, Yilin"],["dc.contributor.author","Wu, Fei"],["dc.contributor.author","Li, Shuguang"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Woerner, Gerhard"],["dc.date.accessioned","2018-11-07T09:16:32Z"],["dc.date.available","2018-11-07T09:16:32Z"],["dc.date.issued","2013"],["dc.description.abstract","The Late Jurassic Jingshan granite located at the south-eastern margin of the North China Craton contains abundant garnets which can be subdivided into three types based on texture and composition: (i) euhedral garnet in mafic biotite and garnet rich enclave (Grt I), (ii) coarse-grained garnet (Grt II) in the host granite, and (iii) small euhedral garnet in aplite (Grt III). In general, Grt I has higher FeO, CaO and lower MnO contents than Grt II. Grt III has higher Mn, but lower Ca contents than others. Grt I has lower MREE and HREE contents than Grt II. Grt III has prominent and distinctly negative Eu anomaly as well as higher MREE composition compared to the others. Systematic variations in oxygen isotope compositions are observed among the three garnet types, with delta O-18 values of <3.8%, in most of Grt I, 3.8-4.7%, in most Grt II (for inclusion-free garnets), and typically >4.7%, in Grt III. Some of the Grt ll and Grt III display two distinct zonings with cores having similar major and trace element compositions to Grt I. Cathodoluminescence (CL) images revealed that the zircons from different garnet-bearing samples possess fine-scale oscillatory zoned magmatic rims with inherited cores. In situ zircon U-Pb dating and trace element analyses show that the dark-luminescent magmatic rims all have Jurassic concordia ages (similar to 160 Ma) and similar trace element patterns. Most of the inherited cores also display similar Triassic ages of 210-236 Ma, which is similar to the ages of ultrahigh pressure (UHP) metamorphic rocks of the Dabie-Sulu orogen (230 Ma). In addition, Jurassic concordia ages were also found in a zircon inclusion in Grt I, implying that the Grt I was formed shortly before the main magmatic event. The age data suggest that the three different garnet types may be genetically related and modified by cogenetic magmatic events. Based on the zircon U-Pb ages from different garnet,bearing samples, the major element, trace element, oxygen isotope, and zoning textures of the three kinds of garnet we suggest that Grt I may be peritectic garnet, whereas Grt II and III are probably the results of magmatic dissolution-precipitation processes and re-equilibration of garnets with changing magmatic conditions during melting, differentiation, crystallization, and cooling within the granite. We conclude from the oxygen isotopic character of the garnets and ages of the zircons that the source rocks for the Jingshan granites are from Dabie-Sulu orogen representing the South China Craton. (C) 2012 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.jseaes.2012.11.026"],["dc.identifier.isi","000327804600013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/27959"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.relation.issn","1878-5786"],["dc.relation.issn","1367-9120"],["dc.title","Anatomy of garnets in a Jurassic granite from the south-eastern margin of the North China Craton: Magma sources and tectonic implications"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","23"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Communications Earth & Environment"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Klaes, Björn"],["dc.contributor.author","Wörner, Gerhard"],["dc.contributor.author","Kremer, Katrina"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Kronz, Andreas"],["dc.contributor.author","Scholz, Denis"],["dc.contributor.author","Mueller, Carsten W."],["dc.contributor.author","Höschen, Carmen"],["dc.contributor.author","Struck, Julian"],["dc.contributor.author","Arz, Helge Wolfgang"],["dc.contributor.author","Kilian, Rolf"],["dc.date.accessioned","2022-04-01T10:02:41Z"],["dc.date.available","2022-04-01T10:02:41Z"],["dc.date.issued","2022"],["dc.description.abstract","Abstract Volcanic ash layers are important markers for the chronostratigraphy of paleoclimate and paleoenvironmental archives at the southern tip of South America. However, this requires that tephras are well-dated. We report geochemical data from stalagmite MA1 formed in a non-karst cave near Mt. Burney volcano in southernmost Patagonia (~53°S). High-resolution LA-ICP-MS analyses, SEM imagery, EPMA data, and NanoSIMS enable to identify volcanogenic signals during the last 4.5 kyrs from sub-annual trace element variations and tephra particles in distinct laminae. Our new 230 Th/U-chronology of MA1 provides precise dating of tephra from Mt. Burney (MB) and, probably, Aguilera (A) at 4,216 +93 / −193 yrs BP (MB 2 ), 2,291 ± 33 yrs BP (MB 3 ), 853 +41 / −60 yrs BP (MB 4 ) and 2,978 +91 / −104 yrs BP (A 1 ). This unique high-resolution record holds potential to date further eruptions from Southern Andean volcanoes for the tephrochronology in this critical region, and potentially also large-volume explosive volcanism off South America."],["dc.identifier.doi","10.1038/s43247-022-00358-0"],["dc.identifier.pii","358"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/105979"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-530"],["dc.relation.eissn","2662-4435"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","High-resolution stalagmite stratigraphy supports the Late Holocene tephrochronology of southernmost Patagonia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","123"],["dc.bibliographiccitation.journal","Journal of Asian Earth Sciences"],["dc.bibliographiccitation.lastpage","140"],["dc.bibliographiccitation.volume","89"],["dc.contributor.author","Liu, Lei"],["dc.contributor.author","Xiao, Yilin"],["dc.contributor.author","Woerner, Gerhard"],["dc.contributor.author","Kronz, A."],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Hou, Zhenhui"],["dc.date.accessioned","2018-11-07T09:37:28Z"],["dc.date.available","2018-11-07T09:37:28Z"],["dc.date.issued","2014"],["dc.description.abstract","This study explores the potential of detrital rutile geochemistry and thermometry as a provenance tracer in rocks from the Central Dabie ultrahigh-pressure metamorphic (UHPM) zone in east-central China that formed during Triassic continental collision. Trace element data of 176 detrital rutile grains selected from local river sediments and 91 rutile grains from distinct bedrocks in the Shuanghe and Bixiling areas, obtained by both electron microprobe (EMP) and in situ LA-ICP-MS analyses, suggest that geochemical compositions and thermometry of detrital rutiles are comparable to those from their potential source rocks. After certification of the Cr-Nb discrimination method for the Central Dabie UHPM zone, we show that 29% of the detrital rutiles in the Shuanghe area were derived from metamafic sources whereas in the Bixiling area that it is up to 76%. Furthermore, the proportion of distinct types of detrital rutiles combined with modal abundances of rutile in metapelites and metamafic bedrocks can be used to estimate the proportion of different source lithologies. Based on this method the proportion of mafic source rocks was estimated to similar to 10% at Shuanghe and >60% at Bixiling, respectively, which is consistent with the proportions of eclogite (the major rutile-bearing metamafic rock) distribution in the field. Therefore, the investigation of detrital rutiles is a potential way to evaluate the proportion of metamafic rocks and even to prospect for metamafic bodies in UHPM terranes. Zr-in-rutile temperatures were calculated at different pressures and compared with temperatures derived from rock-in rutiles and garnet-clinopyroxene Fe-Mg thermometers. Temperatures calculated for detrital rutiles range from 606 degrees C to 707 degrees C and 566 degrees C to 752 degrees C in Shuanghe and Bixiling, respectively, at P= 3 GPa with an average temperatures of ca. 630 degrees C for both areas. These temperature averages and ranges are similar to those calculated for rutiles from surrounding source rocks. Combined with comparable Zr distribution characteristics between detrital and source rock rutiles, demonstrating a close source-sediment link for rutiles from clastic and rock in UHPM terranes. Thus rutiles can be accurate tracers of source rock lithologies in sedimentary provenance studies even at a small regional scale. In Bixiling, Nb/Ta ratios of metamafic and metapelitic detrital rutiles fall between 11.0 to 27.3 and 7.7 to 20.5, respectively. In contrast, in Shuanghe, these ratios are highly variable, ranging from 10.9 to 71.0 and 7.6 to 87.1, respectively. When ignoring four outlier compositions with extremely high Nb/Ta in Shuanghe, a distinct clustering of Nb/Ta ratios in rutiles is shown: metapelitic detrital rutiles have Nb/Ta of 7-40 vs. metamafic detrital rutiles with Nb/Ta = 11-25. The Nb/ Ta characteristics in detrital rutiles from both areas may reflect the degree of fluid-rock interaction during metamorphism and/or different source lithologies. Therefore, the trace element compositions in detrital rutiles can accurately trace the lithology, proportion and fluid-rock interaction of different source rocks. (C) 2014 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.jseaes.2014.04.003"],["dc.identifier.isi","000337207200011"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32848"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.relation.issn","1878-5786"],["dc.relation.issn","1367-9120"],["dc.title","Detrital rutile geochemistry and thermometry from the Dabie orogen: Implications for source-sediment links in a UHPM terrane"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","55"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Contributions to Mineralogy and Petrology"],["dc.bibliographiccitation.lastpage","74"],["dc.bibliographiccitation.volume","154"],["dc.contributor.author","Scheibner, Birgit"],["dc.contributor.author","Woerner, Gerhard"],["dc.contributor.author","Civetta, Lucia"],["dc.contributor.author","Stosch, Heinz Guenter"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Kronz, Andreas"],["dc.date.accessioned","2018-11-07T11:00:56Z"],["dc.date.available","2018-11-07T11:00:56Z"],["dc.date.issued","2007"],["dc.description.abstract","Igneous garnets have the potential to strongly fractionate rare earth elements (REE). Yet informations on partition coefficients are very scant, and criteria for distinguishing between hydrothermal and magmatic garnets are ambiguous. To fill this gap, we present trace element and isotopic data for two types of Ca-rich garnets from phonolites (Mt. Somma-Vesuvius). Both Ca-garnet populations are different in their style and dynamics of fractionation: one population is progressively strongly depleted in HREE from core to rim, reflecting REE fractionation in the host phonolite via earlier-crystallized garnets. Such examples for extreme changes in HREE in garnets are only known for hydrothermal grandites by REE-bearing fluids. The second garnet population is homogeneous and formed in a closed system. Near-flat patterns between Sm and Lu confirm experimental data indicating lower D(Sm)/D(Lu) for Ca-rich garnets than for e.g. pyrope-rich garnets. It follows: D-Grt/PhMelt for La = 0.5, Sm = 48 and Yb = 110."],["dc.identifier.doi","10.1007/s00410-006-0179-z"],["dc.identifier.isi","000247210700004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/51038"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0010-7999"],["dc.title","Rare earth element fractionation in magmatic Ca-rich garnets"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","575"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Geostandards and Geoanalytical Research"],["dc.bibliographiccitation.lastpage","591"],["dc.bibliographiccitation.volume","42"],["dc.contributor.author","Wu, Shitou"],["dc.contributor.author","Karius, Volker"],["dc.contributor.author","Schmidt, Burkhard C."],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Wörner, Gerhard"],["dc.date.accessioned","2018-12-10T13:42:18Z"],["dc.date.available","2018-12-10T13:42:18Z"],["dc.date.issued","2018"],["dc.description.abstract","Two sample preparation techniques (ultrafine powder pellet and flux‐free fusion glass) for LA‐ICP‐MS bulk analysis of granitoids were compared. Ultrafine powder particles produced by wet milling were characterised as d50: ~ 1.0 μm, d90: ~ 5.0 μm. Agate abrasion (balls and vial) during wet milling affects only SiO2 measurements and is negligible for other elements. For the flux‐free fusion glass, a second grinding of the initial fused glass and re‐melting were necessary to produce compositionally homogeneous glasses. Nickel and Cu can be contaminated during the fusion procedure, and Sn and Pb were depleted after the melting process. The homogeneity of fusion glasses was comparable to that of MPI‐DING glasses, while the powder pellets were less homogeneous. This heterogeneity is ascribed to large (up to 10 μm) crystal fragments (e.g., biotite) persisting in powders even after 45 min of milling. For most elements of interest, both preparation techniques give reliable LA‐ICP‐MS results of granitoid reference materials within 10% of the reference values. Thus, we can recommend both techniques to avoid common problems associated with acid dissolution ICP‐MS. For high‐precision measurements (especially Zr, Hf, Th and U), the flux‐free fusion glass technique is a better choice than ultrafine powder pellets."],["dc.identifier.doi","10.1111/ggr.12230"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/57079"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Comparison of Ultrafine Powder Pellet and Flux-free Fusion Glass for Bulk Analysis of Granitoids by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","443"],["dc.bibliographiccitation.issue","3-4"],["dc.bibliographiccitation.journal","Quaternary Science Reviews"],["dc.bibliographiccitation.lastpage","459"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Schimpf, Daniel"],["dc.contributor.author","Kilian, Rolf"],["dc.contributor.author","Kronz, Andreas"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Spoetl, Christoph"],["dc.contributor.author","Woerner, Gerhard"],["dc.contributor.author","Deininger, Michael"],["dc.contributor.author","Mangini, Augusto"],["dc.date.accessioned","2018-11-07T08:59:33Z"],["dc.date.available","2018-11-07T08:59:33Z"],["dc.date.issued","2011"],["dc.description.abstract","Stalagmites are important palaeo-climatic archives since their chemical and isotopic signatures have the potential to record high-resolution changes in temperature and precipitation over thousands of years. We present three U/Th-dated records of stalagmites (MA1-MA3) in the superhumid southern Andes, Chile (53 degrees S). They grew simultaneously during the last five thousand years (ka BP) in a cave that developed in schist and granodiorite. Major and trace elements as well as the C and 0 isotope compositions of the stalagmites were analysed at high spatial and temporal resolution as proxies for palaeo-temperature and palaeo-precipitation. Calibrations are based on data from five years of monitoring the climate and hydrology inside and outside the cave and on data from 100 years of regional weather station records. Water-insoluble elements such as Y and HREE in the stalagmites indicate the amount of incorporated siliciclastic detritus. Monitoring shows that the quantity of detritus is controlled by the drip water rate once a threshold level has been exceeded. In general, drip rate variations of the stalagmites depend on the amount of rainfall. However, different drip-water pathways above each drip location gave rise to individual drip rate levels. Only one of the three stalagmites (MA1) had sufficiently high drip rates to record detrital proxies over its complete length. Carbonate-compatible element contents (e.g. U, Sr, Mg), which were measured up to sub-annual resolution, document changes in meteoric precipitation and related drip-water dilution. In addition, these soluble elements are controlled by leaching during weathering of the host rock and soils depending on the pH of acidic pore waters in the peaty soils of the cave's catchment area. In general, higher rainfall resulted in a lower concentration of these elements and vice versa. The Mg/Ca record of stalagmite MM was calibrated against meteoric precipitation records for the last 100 years from two regional weather stations. Carbonate-compatible soluble elements show similar patterns in the three stalagmites with generally high values when drip rates and detrital tracers were low and vice versa. delta C-13 and delta O-18 values are highly correlated in each stalagmite suggesting a predominantly drip rate dependent kinetic control by evaporation and/or outgassing. Only C and 0 isotopes from stalagmite MA1 that received the highest drip rates show a good correlation between detrital proxy elements and carbonate-compatible elements. A temperature-related change in rainwater isotope values modified the MA1 record during the Little Ice Age (similar to 0.7-0.1 ka BP) that was similar to 1.5 degrees C colder than today. The isotopic composition of the stalagmites MA2 and MA3 that formed at lower drip rates shows a poor correlation with stalagmite MA1 and all other chemical proxies of MM. 'Hendy tests' indicate that the degassing-controlled isotope fractionation of MA2 and MA3 had already started at the cave roof, especially when drip rates were low. Changing pathways and residence times of the seepage water caused a non-climatically controlled isotope fractionation, which may be generally important in ventilated caves during phases of low drip rates. Our proxies indicate that the Neoglacial cold phases from 3.5 to 2.5 and from 0.7 to 0.1 ka BP were characterised by 30% lower precipitation compared with the Medieval Warm Period from 1.2 to 0.8 ka BP, which was extremely humid in this region. (C) 2010 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.quascirev.2010.12.006"],["dc.identifier.isi","000287434000015"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23930"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.relation.issn","0277-3791"],["dc.title","The significance of chemical, isotopic, and detrital components in three coeval stalagmites from the superhumid southernmost Andes (53 degrees S) as high-resolution palaeo-climate proxies"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","24"],["dc.bibliographiccitation.journal","Journal of South American Earth Sciences"],["dc.bibliographiccitation.lastpage","42"],["dc.bibliographiccitation.volume","52"],["dc.contributor.author","Godoy, Benigno"],["dc.contributor.author","Woerner, Gerhard"],["dc.contributor.author","Kojima, Shoji"],["dc.contributor.author","Aguilera, Felipe"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Hartmann, Gerald"],["dc.date.accessioned","2018-11-07T09:38:43Z"],["dc.date.available","2018-11-07T09:38:43Z"],["dc.date.issued","2014"],["dc.description.abstract","Magmatism at Andean Central Volcanic Zone (CVZ), or Central Andes, is strongly influenced by differentiation and assimilation at high pressures that occurred at lower levels of the thick continental crust. This is typically shown by high light to heavy rare earth element ratios (LREE/HREE) of the erupted lavas at this volcanic zone. Increase of these ratios with time is interpreted as a change to magma evolution in the presence of garnet during evolution of Central Andes. Such geochemical signals could be introduced into the magmas be high-pressure fractionation with garnet on the liquidus and/or assimilation from crustal rocks with a garnet-bearing residue. However, lavas erupted at San Pedro-Linzor volcanic chain show no evidence of garnet fractionation in their trace element patterns. This volcanic chain is located in the active volcanic arc, between 22 degrees 00'S and 22 degrees 30'S, over a continental crust similar to 70 km thick. Sampled lavas show Sr/Y and Sm/Yb ratios <40 and <4.0, respectively, which is significantly lower than for most other lavas of recent volcanoes in the Central Andes. In addition, Sr-87/Sr-86 ratios from San Pedro-Linzor lava flows vary between 0.7063 and 0.7094. This is at the upper range, and even higher than those observed at other recent Central Andean volcanic rocks (<0.708). The area in which the San Pedro-Linzor volcanic chain is located is constituted by a felsic, Proterozoic upper crust, and a thin mafic lower crustal section (<25 km). Also, the NW SE orientation of the volcanic chain is distinctive with respect to the N-S orientation of Central Andean volcanic front in northern Chile. We relate our geochemical observations to shallow crustal evolution of primitive magmas involving a high degree of assimilation of upper continental crust. We emphasize that low pressure AFC- (Assimilation Fractional Crystallization) type evolution of the San Pedro-Linzor volcanic chain reflects storage, fractionation, and contamination of mantle-derived magmas at the upper felsic crust (<40 km depth). The ascent of mantle-derived magmas to mid-crustal levels is related with the extensional regime that has existed in this zone of arc-front offset since Late-Miocene age, and the relatively thin portion of mafic lower crust observed below the volcanic chain. (C) 2014 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.jsames.2014.02.004"],["dc.identifier.isi","000336464700002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33126"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.relation.issn","0895-9811"],["dc.title","Low-pressure evolution of arc magmas in thickened crust: The San Pedro-Linzor volcanic chain, Central Andes, Northern Chile"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","567"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Geostandards and Geoanalytical Research"],["dc.bibliographiccitation.lastpage","584"],["dc.bibliographiccitation.volume","43"],["dc.contributor.author","Wu, Shitou"],["dc.contributor.author","Wörner, Gerhard"],["dc.contributor.author","Jochum, Klaus Peter"],["dc.contributor.author","Stoll, Brigitte"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Kronz, Andreas"],["dc.date.accessioned","2019-10-10T07:21:46Z"],["dc.date.available","2019-10-10T07:21:46Z"],["dc.date.issued","2019"],["dc.description.abstract","The limit of detection (LOD), ICP mass load effect, downhole induced fractionation and matrix effect of 193 nm ArF excimer laser ablation system at high spatial resolution were systematically investigated. Trace elements in GSD-1G, StHs6/80-G and NIST612 were measured at 10 μm spot size. The results showed that the LOD decreased with the increasing ablation diameter. In addition, the LOD of part of trace elements was in a range of 1–10 μg g−1 at 7 μm spot size. Mass load effect was negatively correlated with the corresponding oxide melting temperature, while positively correlated with the elemental 1st ionization potential. Downhole fractionation was negligible when the ratio of ablation depth to spot size was smaller than 1:1. Matrix effect between NIST610, GSD-1G, ATHO-G and StHs6/80-G did not change in the spot size ranged from 10 μm to 50 μm. The analytical results of GSD-1G, StHs6/80-G and NIST612 at 10 μm spot size matched well with the reference values. Generally, 10 μm spatial resolution could satisfy the requirements of trace elements analysis."],["dc.description.sponsorship","China Scholarship Council http://dx.doi.org/10.13039/501100004543"],["dc.description.sponsorship","National Natural Science Foundation of China http://dx.doi.org/10.13039/501100001809"],["dc.identifier.doi","10.1111/ggr.12301"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16907"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62484"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1639-4488"],["dc.relation.issn","1751-908X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","The Preparation and Preliminary Characterisation of Three Synthetic Andesite Reference Glass Materials (ARM‐1, ARM‐2, ARM‐3) for In Situ Microanalysis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","15"],["dc.bibliographiccitation.journal","Geochimica et Cosmochimica Acta"],["dc.bibliographiccitation.volume","71"],["dc.contributor.author","Wegner, W."],["dc.contributor.author","Woerner, Gerhard"],["dc.contributor.author","Harmon, Russell S."],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Singer, Bradley S."],["dc.date.accessioned","2018-11-07T11:00:03Z"],["dc.date.available","2018-11-07T11:00:03Z"],["dc.date.issued","2007"],["dc.format.extent","A1097"],["dc.identifier.isi","000248789902565"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/50846"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.publisher.place","Oxford"],["dc.relation.conference","17th Annual V M Goldschmidt Conference"],["dc.relation.eventlocation","Cologne, GERMANY"],["dc.relation.issn","0016-7037"],["dc.title","Evolution of a maturing arc system: The west-central Isthmus of Panama"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]