Articles | Volume 13, issue 9
https://doi.org/10.5194/essd-13-4465-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-13-4465-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
A spectral library for laser-induced fluorescence analysis as a tool for rare earth element identification
Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Chemnitzer Str. 40, 09599 Freiberg, Germany
Jan Beyer
Institute of Applied Physics, TU Bergakademie Freiberg, Leipziger Strasse 23, 09599 Freiberg, Germany
Sandra Lorenz
Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Chemnitzer Str. 40, 09599 Freiberg, Germany
Suchinder Sharma
Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Chemnitzer Str. 40, 09599 Freiberg, Germany
Institute of Applied Physics, TU Bergakademie Freiberg, Leipziger Strasse 23, 09599 Freiberg, Germany
Axel D. Renno
Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Chemnitzer Str. 40, 09599 Freiberg, Germany
Johannes Heitmann
Institute of Applied Physics, TU Bergakademie Freiberg, Leipziger Strasse 23, 09599 Freiberg, Germany
Richard Gloaguen
Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Chemnitzer Str. 40, 09599 Freiberg, Germany
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Lutz Schirrmeister, Margret C. Fuchs, Thomas Opel, Andrei Andreev, Frank Kienast, Andrea Schneider, Larisa Nazarova, Larisa Frolova, Svetlana Kuzmina, Tatiana Kuznetsova, Vladimir Tumskoy, Heidrun Matthes, Gerit Lohmann, Guido Grosse, Viktor Kunitsky, Hanno Meyer, Heike H. Zimmermann, Ulrike Herzschuh, Thomas Boehmer, Stuart Umbo, Sevi Modestou, Sebastian F. M. Breitenbach, Anfisa Pismeniuk, Georg Schwamborn, Stephanie Kusch, and Sebastian Wetterich
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The strong ecosystem response to the Last Interglacial warming, reflected in the high diversity of proxies, shows the sensitivity of permafrost regions to rising temperatures. In particular, the development of thermokarst landscapes created a mosaic of terrestrial, wetland, and aquatic habitats, fostering an increase in biodiversity. This biodiversity is evident in the rich variety of terrestrial insects, vegetation, and aquatic invertebrates preserved in these deposits.
Michael Dietze, Sebastian Kreutzer, Margret C. Fuchs, and Sascha Meszner
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The R package sandbox is a collection of functions that allow the creation, sampling and analysis of fully virtual sediment sections, like having a virtual twin of real-world deposits. This article introduces the concept, features, and workflows required to use sandbox. It shows how a real-world sediment section can be mapped into the model and subsequently addresses a series of theoretical and practical questions, exploiting the flexibility of the model framework.
Thomas Opel, Sebastian Wetterich, Hanno Meyer, Alexander Y. Dereviagin, Margret C. Fuchs, and Lutz Schirrmeister
Clim. Past, 13, 587–611, https://doi.org/10.5194/cp-13-587-2017, https://doi.org/10.5194/cp-13-587-2017, 2017
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We studied late Quaternary permafrost at the Oyogos Yar coast (Dmitry Laptev Strait) to reconstruct palaeoclimate and palaeonvironmental conditions in the Northeast Siberian Arctic. Our ice-wedge stable isotope record, combined with data from Bol'shoy Lyakhovsky Island, indicates coldest winter temperatures during MIS5 and MIS2, warmest conditions during the Holocene, i.e. today, and non-stable winter climate during MIS3. New IRSL ages reveal high climate variability during MIS5.
Lutz Schirrmeister, Georg Schwamborn, Pier Paul Overduin, Jens Strauss, Margret C. Fuchs, Mikhail Grigoriev, Irina Yakshina, Janet Rethemeyer, Elisabeth Dietze, and Sebastian Wetterich
Biogeosciences, 14, 1261–1283, https://doi.org/10.5194/bg-14-1261-2017, https://doi.org/10.5194/bg-14-1261-2017, 2017
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We investigate late Pleistocene permafrost at the Buor Khaya Peninsula (Laptev Sea, Siberia) for cryolithological, geochemical, and geochronological parameters. The sequences were composed of ice-oversaturated silts and fine-grained sands with 0.2 to 24 wt% of organic matter. The deposition was between 54.1 and 9.7 kyr BP. Due to coastal erosion, the biogeochemical signature of the deposits represents the terrestrial end-member, and is related to organic matter deposited in the marine realm.
Lutz Schirrmeister, Margret C. Fuchs, Thomas Opel, Andrei Andreev, Frank Kienast, Andrea Schneider, Larisa Nazarova, Larisa Frolova, Svetlana Kuzmina, Tatiana Kuznetsova, Vladimir Tumskoy, Heidrun Matthes, Gerit Lohmann, Guido Grosse, Viktor Kunitsky, Hanno Meyer, Heike H. Zimmermann, Ulrike Herzschuh, Thomas Boehmer, Stuart Umbo, Sevi Modestou, Sebastian F. M. Breitenbach, Anfisa Pismeniuk, Georg Schwamborn, Stephanie Kusch, and Sebastian Wetterich
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The strong ecosystem response to the Last Interglacial warming, reflected in the high diversity of proxies, shows the sensitivity of permafrost regions to rising temperatures. In particular, the development of thermokarst landscapes created a mosaic of terrestrial, wetland, and aquatic habitats, fostering an increase in biodiversity. This biodiversity is evident in the rich variety of terrestrial insects, vegetation, and aquatic invertebrates preserved in these deposits.
Akshay Kamath, Samuel Thiele, Moritz Kirsch, and Richard Gloaguen
EGUsphere, https://doi.org/10.5194/egusphere-2024-3448, https://doi.org/10.5194/egusphere-2024-3448, 2024
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We developed a deep learning model that uses hyperspectral imaging data to predict key physical rock properties, specifically density, slowness, and gamma-ray values. Our model successfully learned to translate hyperspectral information into predicted physical properties. Tests on independent data gave accurate results, demonstrating the potential of hyperspectral data for mapping physical rock properties.
Aldino Rizaldy, Pedram Ghamisi, and Richard Gloaguen
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-4-W11-2024, 103–109, https://doi.org/10.5194/isprs-archives-XLVIII-4-W11-2024-103-2024, https://doi.org/10.5194/isprs-archives-XLVIII-4-W11-2024-103-2024, 2024
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We apply multi-range hyperspectral imaging on drill core material from a Kupferschiefer-type Cu–Ag deposit in Germany, mapping minerals such as iron oxides, kaolinite, sulfate, and carbonates at millimetre resolution and in a rapid, cost-efficient, and continuous manner to track hydrothermal fluid flow paths and vectors towards base metal deposits in sedimentary basins.
Michael Dietze, Sebastian Kreutzer, Margret C. Fuchs, and Sascha Meszner
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Trond Ryberg, Moritz Kirsch, Christian Haberland, Raimon Tolosana-Delgado, Andrea Viezzoli, and Richard Gloaguen
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Novel methods for mineral exploration play an important role in future resource exploration. The methods have to be environmentally friendly, socially accepted and cost effective by integrating multidisciplinary methodologies. We investigate the potential of passive, ambient noise tomography combined with 3D airborne electromagnetics for mineral exploration in Geyer, Germany. We show that the combination of the two geophysical data sets has promising potential for future mineral exploration.
I. C. Contreras, M. Khodadadzadeh, and R. Gloaguen
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K. Rafiezadeh Shahi, P. Ghamisi, R. Jackisch, M. Khodadadzadeh, S. Lorenz, and R. Gloaguen
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Thomas Opel, Sebastian Wetterich, Hanno Meyer, Alexander Y. Dereviagin, Margret C. Fuchs, and Lutz Schirrmeister
Clim. Past, 13, 587–611, https://doi.org/10.5194/cp-13-587-2017, https://doi.org/10.5194/cp-13-587-2017, 2017
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Lutz Schirrmeister, Georg Schwamborn, Pier Paul Overduin, Jens Strauss, Margret C. Fuchs, Mikhail Grigoriev, Irina Yakshina, Janet Rethemeyer, Elisabeth Dietze, and Sebastian Wetterich
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Carbon dioxide is a main greenhouse gas and a gas that well-represents air quality. Therefore, it is important to monitor the CO2 concentration in air. Creating an affordable and reliable CO2 sensor is the purpose of this paper. Using a mass-sensitive acoustic sensor (FBAR) we can detect increasing CO2 concentration by a mass increase on the sensor surface. As humidity changes often interfere with these signals the selection of CO2 over humidity changes is another topic addressed in this paper.
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We use a geomorphic approach in order to unravel the recent tectonic evolution of the Sierra Madre de Chiapas and Maya Mountains (northern Central America). Our results highlight elevated relict landscapes that are characterized by a low-amplitude relief. The distribution of these landscapes results from a tectonic control. We combine our results with published GPS and seismotectonic data in order to extend existing geodynamic models of the North American–Caribbean–Cocos plate boundary.
M. C. Fuchs, R. Gloaguen, S. Merchel, E. Pohl, V. A. Sulaymonova, C. Andermann, and G. Rugel
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A semi-distributed hydrological model is used to analyse the hydrological cycle of a glaciated high-mountain catchment in the Pamirs.
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This implies that expected Earth surface processes along precipitation and altitude gradients differ substantially.
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Preprint withdrawn
U. Mallast, R. Gloaguen, J. Friesen, T. Rödiger, S. Geyer, R. Merz, and C. Siebert
Hydrol. Earth Syst. Sci., 18, 2773–2787, https://doi.org/10.5194/hess-18-2773-2014, https://doi.org/10.5194/hess-18-2773-2014, 2014
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Geosciences – Geology
Greenland Geothermal Heat Flow Database and Map (Version 1)
MIS 5e sea-level history along the Pacific coast of North America
Slope deformation, reservoir variation and meteorological data at the Khoko landslide, Enguri hydroelectric basin (Georgia), during 2016–2019
Marine terraces of the last interglacial period along the Pacific coast of South America (1° N–40° S)
A standardized database of Marine Isotope Stage 5e sea-level proxies in southern Africa (Angola, Namibia and South Africa)
Database of global glendonite and ikaite records throughout the Phanerozoic
A status report on a section-based stratigraphic and palaeontological database – the Geobiodiversity Database
Lake and mire isolation data set for the estimation of post-glacial land uplift in Fennoscandia
William Colgan, Agnes Wansing, Kenneth Mankoff, Mareen Lösing, John Hopper, Keith Louden, Jörg Ebbing, Flemming G. Christiansen, Thomas Ingeman-Nielsen, Lillemor Claesson Liljedahl, Joseph A. MacGregor, Árni Hjartarson, Stefan Bernstein, Nanna B. Karlsson, Sven Fuchs, Juha Hartikainen, Johan Liakka, Robert S. Fausto, Dorthe Dahl-Jensen, Anders Bjørk, Jens-Ove Naslund, Finn Mørk, Yasmina Martos, Niels Balling, Thomas Funck, Kristian K. Kjeldsen, Dorthe Petersen, Ulrik Gregersen, Gregers Dam, Tove Nielsen, Shfaqat A. Khan, and Anja Løkkegaard
Earth Syst. Sci. Data, 14, 2209–2238, https://doi.org/10.5194/essd-14-2209-2022, https://doi.org/10.5194/essd-14-2209-2022, 2022
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We assemble all available geothermal heat flow measurements collected in and around Greenland into a new database. We use this database of point measurements, in combination with other geophysical datasets, to model geothermal heat flow in and around Greenland. Our geothermal heat flow model is generally cooler than previous models of Greenland, especially in southern Greenland. It does not suggest any high geothermal heat flows resulting from Icelandic plume activity over 50 million years ago.
Daniel R. Muhs
Earth Syst. Sci. Data, 14, 1271–1330, https://doi.org/10.5194/essd-14-1271-2022, https://doi.org/10.5194/essd-14-1271-2022, 2022
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The last interglacial period, known as marine isotope substage (MIS) 5e, was the last time in recent geologic history when sea level was substantially higher than present. It is an important time period to understand because climate models forecast a higher global sea level in the not-too-distant future. Geologic records of this high-sea stand (marine terraces, reefs) along the Pacific coast of North America are reviewed here with the identification of knowledge gaps where more work is needed.
Alessandro Tibaldi, Federico Pasquaré Mariotto, Paolo Oppizzi, Fabio Luca Bonali, Nino Tsereteli, Levan Mebonia, and Johni Chania
Earth Syst. Sci. Data, 13, 3321–3335, https://doi.org/10.5194/essd-13-3321-2021, https://doi.org/10.5194/essd-13-3321-2021, 2021
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Under a NATO project, we installed a monitoring system at the Khoko landslide facing the Enguri artificial reservoir (Greater Caucasus). During 2016–2019, we compare slope deformation with meteorological factors and variations in the water level of the reservoir. Our results indicate that the landslide displacements appear to be controlled by variations in hydraulic load and partially by rainfall.
Roland Freisleben, Julius Jara-Muñoz, Daniel Melnick, José Miguel Martínez, and Manfred R. Strecker
Earth Syst. Sci. Data, 13, 2487–2513, https://doi.org/10.5194/essd-13-2487-2021, https://doi.org/10.5194/essd-13-2487-2021, 2021
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Tectonically active coasts are dynamic environments that host densely populated areas and associated infrastructure. We measured and described last interglacial marine terraces along 5000 km of the western South American coast. The pattern of terrace elevations displays short- to long-wavelength structures that may be controlled by crustal faults and the subduction of major bathymetric anomalies. Latitudinal climate characteristics may further influence their generation and preservation.
J. Andrew G. Cooper and Andrew N. Green
Earth Syst. Sci. Data, 13, 953–968, https://doi.org/10.5194/essd-13-953-2021, https://doi.org/10.5194/essd-13-953-2021, 2021
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A standardized database compiled to a common format is presented for indicators of sea level during the last interglacial from the southern African coast (Angola, Namibia and South Africa). These enable further analysis of the nature of the sea-level highstand and its regional variability.
Mikhail Rogov, Victoria Ershova, Oleg Vereshchagin, Kseniia Vasileva, Kseniia Mikhailova, and Aleksei Krylov
Earth Syst. Sci. Data, 13, 343–356, https://doi.org/10.5194/essd-13-343-2021, https://doi.org/10.5194/essd-13-343-2021, 2021
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A database of a modern metastable cold-water mineral (ikaite) and its replacement mineral (glendonite) spanning 540 million years has been created to understand their distribution in space and time. A significant body of evidence suggests that glendonite occurrences are restricted mainly to cold-water settings; however they do not occur during every glaciation or cooling event reported from the Phanerozoic. This compilation improves our understanding of climatic conditions of the past.
Hong-He Xu, Zhi-Bin Niu, and Yan-Sen Chen
Earth Syst. Sci. Data, 12, 3443–3452, https://doi.org/10.5194/essd-12-3443-2020, https://doi.org/10.5194/essd-12-3443-2020, 2020
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We introduce here a comprehensive database of stratigraphy and palaeontology biodiversity, the Geobiodiversity Database (GBDB). The GBDB collects and provides a big volume of fossil and stratum record data and aims to be more widely used by geoscientists and contribute to better quantitative research on palaeontology and stratigraphy, and furthermore, to a deeper understanding of the evolution of life and of Earth's history.
Jari Pohjola, Jari Turunen, and Tarmo Lipping
Earth Syst. Sci. Data, 12, 869–873, https://doi.org/10.5194/essd-12-869-2020, https://doi.org/10.5194/essd-12-869-2020, 2020
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When modelling land uplift processes, there is a need for historical data in which dating, elevation and consequently spatial data are connected to the shore level at that time. In addition, human settlements were located above the seawater level in Fennoscandia. This information can be used to validate and update the post-glacial land uplift model. In this paper, a collection of data consisting of geological and archaeological data sets is presented.
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Short summary
We present a library of high-resolution laser-induced fluorescence (LiF) reference spectra using the Smithsonian rare earth phosphate standards for electron microprobe analysis. With the recurring interest in rare earth elements (REEs), LiF may provide a powerful tool for their rapid and accurate identification. Applications of the spectral LiF library to natural materials such as rocks could complement the spectroscopy-based toolkit for innovative, non-invasive exploration technologies.
We present a library of high-resolution laser-induced fluorescence (LiF) reference spectra using...
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