Poor Man's Line Scan – a simple tool for the acquisition of high-resolution, undistorted drill core photos
Lukas Gegg
CORRESPONDING AUTHOR
Institute of Earth and Environmental Sciences, University of Freiburg, Albertstraße 23b, 79104 Freiburg, Germany
Johann Gegg
independent engineer: 85132 Schernfeld, Germany
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Bennet Schuster, Lukas Gegg, Sebastian Schaller, Marius W. Buechi, David C. Tanner, Ulrike Wielandt-Schuster, Flavio S. Anselmetti, and Frank Preusser
Sci. Dril., 33, 191–206, https://doi.org/10.5194/sd-33-191-2024, https://doi.org/10.5194/sd-33-191-2024, 2024
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The Tannwald Basin, explored by drilling and formed by repeated advances of the Rhine Glacier, reveals key geological insights. Ice-contact sediments and evidence of deformation highlight gravitational and glaciotectonic processes. ICDP DOVE 5068_1_C core data define lithofacies associations, reflecting basin infill cycles, marking at least three distinct glacial advances. Integrating these findings aids understanding the broader glacial evolution of the Lake Constance amphitheater.
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We determined 10Be concentrations in moraine boulder surfaces in the southern Black Forest, SW Germany. We applied three independent dating methods to younger lake sediments. With the aid of independent age datasets, we calculated the growth of 10Be concentrations in moraine boulder surfaces.
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Erosion processes below glacier ice have carved large and deep basins in the landscapes surrounding mountain ranges as well as polar regions. With our comparison, we show that these two groups of basins are very similar in their shapes and sizes. However, open questions still remain especially regarding the sediments that later fill up these basins. We aim to stimulate future research and promote exchange between researchers working around the Alps and the northern central European lowlands.
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Luminescence properties of samples from the Rinikerfeld, northern Switzerland, are assessed. Reader-specific low preheat temperatures are invesigated to ensure suitable measurement conditions. While quartz is found to be dominated by stable fast components, signal loss is observed for feldspar and polymineral. In general, the ages of the fading corrected feldspar and the fine-grained polymineral fractions are in agreement with coarse-grained quartz, and ages indicate sedimentation during MIS6.
Bennet Schuster, Lukas Gegg, Sebastian Schaller, Marius W. Buechi, David C. Tanner, Ulrike Wielandt-Schuster, Flavio S. Anselmetti, and Frank Preusser
Sci. Dril., 33, 191–206, https://doi.org/10.5194/sd-33-191-2024, https://doi.org/10.5194/sd-33-191-2024, 2024
Short summary
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The Tannwald Basin, explored by drilling and formed by repeated advances of the Rhine Glacier, reveals key geological insights. Ice-contact sediments and evidence of deformation highlight gravitational and glaciotectonic processes. ICDP DOVE 5068_1_C core data define lithofacies associations, reflecting basin infill cycles, marking at least three distinct glacial advances. Integrating these findings aids understanding the broader glacial evolution of the Lake Constance amphitheater.
Felix Martin Hofmann, Claire Rambeau, Lukas Gegg, Melanie Schulz, Martin Steiner, Alexander Fülling, Laëtitia Léanni, Frank Preusser, and ASTER Team
Geochronology, 6, 147–174, https://doi.org/10.5194/gchron-6-147-2024, https://doi.org/10.5194/gchron-6-147-2024, 2024
Short summary
Short summary
We determined 10Be concentrations in moraine boulder surfaces in the southern Black Forest, SW Germany. We applied three independent dating methods to younger lake sediments. With the aid of independent age datasets, we calculated the growth of 10Be concentrations in moraine boulder surfaces.
Lukas Gegg and Frank Preusser
E&G Quaternary Sci. J., 72, 23–36, https://doi.org/10.5194/egqsj-72-23-2023, https://doi.org/10.5194/egqsj-72-23-2023, 2023
Short summary
Short summary
Erosion processes below glacier ice have carved large and deep basins in the landscapes surrounding mountain ranges as well as polar regions. With our comparison, we show that these two groups of basins are very similar in their shapes and sizes. However, open questions still remain especially regarding the sediments that later fill up these basins. We aim to stimulate future research and promote exchange between researchers working around the Alps and the northern central European lowlands.
Daniela Mueller, Frank Preusser, Marius W. Buechi, Lukas Gegg, and Gaudenz Deplazes
Geochronology, 2, 305–323, https://doi.org/10.5194/gchron-2-305-2020, https://doi.org/10.5194/gchron-2-305-2020, 2020
Short summary
Short summary
Luminescence properties of samples from the Rinikerfeld, northern Switzerland, are assessed. Reader-specific low preheat temperatures are invesigated to ensure suitable measurement conditions. While quartz is found to be dominated by stable fast components, signal loss is observed for feldspar and polymineral. In general, the ages of the fading corrected feldspar and the fine-grained polymineral fractions are in agreement with coarse-grained quartz, and ages indicate sedimentation during MIS6.
Cited articles
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Short summary
Geoscientists working with drill cores often struggle with proper photo documentation. We present a simple smartphone-based setup for acquiring high-resolution undistorted core pictures as an alternative to state-of-the-art commercial line scan imaging systems that are typically expensive and inflexible. It makes use of the phone's panoramic picture mode while being guided along the core in question on a rail, and the resulting images are of similar quality to classic line scan photos.
Geoscientists working with drill cores often struggle with proper photo documentation. We...