Search Results - "Riechelmann, Sylvia"
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A novel multiproxy approach to reconstruct the paleoecology of extinct cephalopods
Published in Gondwana research (01-03-2019)“…Reconstructing marine paleoenvironments from the skeletal hardparts of nektic organisms is often hampered by their unknown migrational pathways involving…”
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Time series of δ26Mg variability in precipitation of north‐west Germany
Published in The depositional record (01-06-2022)“…This study presents δ26Mg values, Mg2+ concentrations, δ18O and δ2H values of monthly collected rain and snow samples between 2014 and 2017 from north‐west…”
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High‐Resolution Proxy Records From Two Simultaneously Grown Stalagmites From Zoolithencave (Southeastern Germany) and their Potential for Palaeoclimate Reconstruction
Published in Geochemistry, geophysics, geosystems : G3 (01-06-2020)“…Abstract Two small annually laminated stalagmites from Zoolithencave (southeastern Germany) grew between CE 1821 and 1970 (Zoo‐rez‐1) and CE 1835 and 1970…”
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Petrographic and geochemical constraints on the formation of gravity‐defying speleothems
Published in The depositional record (01-05-2023)“…Cave carbonates, seemingly growing in defiance of gravity, have attracted the community's interest for more than a century. This paper focusses on…”
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Drivers of the Late Ordovician Mass Extinction: redox, volcanism, atmospheric oxygen/carbon dioxide and/or glaciation
Published in Estonian journal of earth sciences (01-03-2023)“…Keywords: halite, carbonate, trace elements, strontium isotopes, microthermometry, LOME icehouse…”
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Environmental relevance monitoring and assessment of ochreous precipitates, hydrochemistry and water sources from abandoned coal mine drainage
Published in Environmental monitoring and assessment (01-08-2024)“…This study investigated the mineralogical and chemical characteristics of ochreous precipitates and mine water samples from abandoned Upper Carboniferous hard…”
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Controls on formation and alteration of early diagenetic dolomite: A multi-proxy δ44/40Ca, δ26Mg, δ18O and δ13C approach
Published in Geochimica et cosmochimica acta (01-08-2020)“…The full potential of the dolomite Ca isotope proxy only unfolds when combined with data of the other main elements (C, O, Mg) in the crystal lattice of…”
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Long-term elemental trends in drip waters from monitoring Bunker Cave: New insights for past precipitation variability
Published in Chemical geology (20-02-2022)“…A seven-year (2006–2013) monitoring was conducted in Bunker Cave, northwest Germany. The monitoring programme incorporates cave air temperature, the amount of…”
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Impact of diagenetic alteration on brachiopod shell magnesium isotope (δ26Mg) signatures: Experimental versus field data
Published in Chemical geology (15-11-2016)“…Due to their thermodynamically stable low-Mg calcite mineralogy, the shells of brachiopods are often counted among the most reliable archives of the…”
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Calcite Mg and Sr partition coefficients in cave environments: Implications for interpreting prior calcite precipitation in speleothems
Published in Geochimica et cosmochimica acta (15-01-2020)“…Trace element to Ca ratios in speleothems have emerged as important proxies that reflect local environmental conditions. However, interpretations of speleothem…”
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Scaling in fractured geothermal carbonate reservoir rocks: An experimental approach
Published in Geothermics (01-01-2025)Get full text
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Seawater chemistry of a modern subtropical ‘epeiric’ sea: Spatial variability and effects of organic decomposition
Published in Geochimica et cosmochimica acta (01-12-2021)“…Direct studies of recent epeiric seawater chemistry and their geological significance are relatively few compared to the far more abundant studies from ancient…”
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Time series of δ 26 Mg variability in precipitation of north‐west Germany
Published in The depositional record (01-06-2022)“…Abstract This study presents δ 26 Mg values, Mg 2+ concentrations, δ 18 O and δ 2 H values of monthly collected rain and snow samples between 2014 and 2017…”
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Experimental precipitation of cryogenic carbonate
Published in Chemical geology (30-09-2023)“…Cryogenic cave carbonates (CCC) represent a specific type of speleothem precipitating from freezing water in caves. Over the past decade, considerable progress…”
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Towards an improved understanding of Ca–Mg carbonates with nonplanar surfaces: An experimental approach
Published in Sedimentology (05-09-2024)“…ABSTRACT Saddle dolomite is a Ca–Mg carbonate characterized by curved crystal faces, curved cleavage and sweeping extinction under cross‐polarized light…”
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Testing the preservation potential of early diagenetic dolomites as geochemical archives
Published in Sedimentology (01-02-2020)“…Early marine diagenetic dolomite is a rather thermodynamically‐stable carbonate phase and has potential to act as an archive of marine porewater properties…”
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Echinoid skeletal carbonate as archive of past seawater magnesium isotope signatures – Potential and limitations
Published in Geochimica et cosmochimica acta (15-08-2018)“…The low-Mg (spine) to high-Mg (test) calcite skeletal hardparts of echinoids are exploited in carbonate archive research. These studies, however, are not…”
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Fluid upwelling and alluvial controls on spring localization: An example from Sri Lanka
Published in Groundwater for sustainable development (01-08-2024)“…In water-scarce regions, perennial springs can be a valuable source of drinking water. However, to identify unreported springs and shallow water upwelling…”
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Integrated stratigraphy (radiolarians, calcareous nannofossils, carbon and strontium isotopes) of the Sinemurian–Pliensbachian transition at Mt. Rettenstein, Northern Calcareous Alps, Austria
Published in Global and planetary change (01-05-2022)“…A 95 m thick succession of grey siliceous limestone and marl on Mount Rettenstein in the Northern Calcareous Alps allowed us to study well-preserved and…”
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Physicochemical characteristics of drip waters: Influence on mineralogy and crystal morphology of recent cave carbonate precipitates
Published in Geochimica et cosmochimica acta (15-11-2014)“…Speleothems are one of the most intensively explored continental archives for palaeoclimate variability. The parameters, however, that control speleothem…”
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