Articles | Volume 20, issue 4
https://doi.org/10.5194/cp-20-817-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-20-817-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Apr 2024
Research article |
| 08 Apr 2024
| 08 Apr 2024
Holocene environmental and climate evolution of central west Patagonia as reconstructed from lacustrine sediments of Meseta Chile Chico (46.5° S, Chile)
Carolina Franco
CORRESPONDING AUTHOR
Institute of Geography, GEOPOLAR, University of Bremen, Bremen, Germany
Antonio Maldonado
Centro de Estudios Avanzados en Zonas Áridas (CEAZA), La Serena, Chile
Departamento de Biología Marina, Universidad Católica del Norte, Coquimbo, Chile
Christian Ohlendorf
Institute of Geography, GEOPOLAR, University of Bremen, Bremen, Germany
A. Catalina Gebhardt
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Bremerhaven, Germany
María Eugenia de Porras
IANIGLA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina
Amalia Nuevo-Delaunay
Centro de Investigación en Ecosistemas de la Patagonia (CIEP), Coyhaique, Chile
César Méndez
Centro de Investigación en Ecosistemas de la Patagonia (CIEP), Coyhaique, Chile
Bernd Zolitschka
Institute of Geography, GEOPOLAR, University of Bremen, Bremen, Germany
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Biogeosciences, 22, 2005–2022, https://doi.org/10.5194/bg-22-2005-2025, https://doi.org/10.5194/bg-22-2005-2025, 2025
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Inka-Coya Lake is located in the Atacama Desert, and this pioneer study characterized the gradient of microbial life along the deep lacustrine sediments that stratified for over 600 years, since the pre-mining period. Our results indicate there are great taxonomic novelty and strong relationships with geochemical composition especially in Cu, Fe, Ni, and V. We propose a clustering of taxa and function in three zones with characteristic taxonomic and functional potential.
Stella Birlo, Wojciech Tylmann, and Bernd Zolitschka
Geochronology, 5, 65–90, https://doi.org/10.5194/gchron-5-65-2023, https://doi.org/10.5194/gchron-5-65-2023, 2023
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Sediment cores from the volcanic lake Holzmaar provide a very precise chronology based on tree-ring-like annual laminations or varves. We statistically combine this varve chronology with radiometric dating and tested three different methods to upgrade the age–depth model. However, only one of the three methods tested improved the dating accuracy considerably. With this work, an overview of different age integration methods is discussed and made available for increased future demands.
Lilian Reiss, Christian Stüwe, Thomas Einwögerer, Marc Händel, Andreas Maier, Stefan Meng, Kerstin Pasda, Ulrich Simon, Bernd Zolitschka, and Christoph Mayr
E&G Quaternary Sci. J., 71, 23–43, https://doi.org/10.5194/egqsj-71-23-2022, https://doi.org/10.5194/egqsj-71-23-2022, 2022
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We aim at testing and evaluating geochemical proxies and material for radiocarbon dating for their reliability and consistency at the Palaeolithic site Kammern-Grubgraben (Lower Austria). While carbonate and organic carbon contents are interpreted in terms of palaeoclimate variability, pedogenic carbonates turned out to be of Holocene age. As a consequence, the proxy data assessed here are differentially suitable for environmental reconstructions.
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Short summary
We present a continuous record of lake sediments spanning the Holocene from central west Patagonia. By examining various indicators like elemental composition and grain size data, we found that, around ~5500 years ago, the way sediments settled in the lake changed. On a regional scale, our results suggest that rainfall, influenced by changes in the Southern Hemisphere Westerly Winds, played a key role in shaping the environment of the region for the past ~10 000 years.
We present a continuous record of lake sediments spanning the Holocene from central west...
