Article
Engineering, Civil
Xiao-Long Qiu, Baoli Wang, Meiling Yang, Wanzhu Li, Ruoyu Sun, Guilin Han, Cong-Qiang Liu
Summary: River damming alters the behavior of riverine strontium (Sr). The dissolved Sr concentrations in reservoirs are stratified and increase with depth, likely due to the influence of phytoplankton and the precipitation and dissolution of calcite. Long-term hydraulic loads along the reservoirs result in a significant increase in dissolved Sr concentrations. Furthermore, the 87Sr/86Sr ratio of reservoir phytoplankton can be used to distinguish between autochthonous and allochthonous sources of particulate matter.
JOURNAL OF HYDROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Wen-qian Wang, Joachim A. R. Katchinoff, Claudio Garbelli, Adrian Immenhauser, Quan-feng Zheng, Yi-chun Zhang, Dong-xun Yuan, Yu-kun Shi, Jiuyuan Wang, Noah Planavsky, Shu-zhong Shen
Summary: The Permian Period experienced unprecedented Earth system changes, transitioning from icehouse to greenhouse conditions and facing two biocrises associated with volcanisms. Seawater Sr isotope records can illuminate the Permian Earth system evolution, but face issues such as low resolution and potential diagenetic alteration. New research suggests that changes in hydrothermal input, rather than continental weathering intensity, may have been the primary driver of the observed variations in Permian seawater 87Sr/86Sr ratios.
EARTH-SCIENCE REVIEWS
(2021)
Article
Environmental Sciences
Xiaodong He, Peiyue Li, Hua Shi, Yuanxiang Xiao, Yanan Guo, Hanghang Zhao
Summary: In this study, the sources of strontium and its isotopic composition in hydraulic fracturing flowback fluid were identified, and it was determined that 87Sr/86Sr can be used as a sensitive indicator for groundwater pollution. A modeling approach was used to assess the sensitivity of 87Sr/86Sr in indicating contamination, and it was found that even a small amount (0.89%) of fracturing flowback fluid can be identified using this method.
Article
Engineering, Civil
Catherine Lerouge, Mathieu Debure, Ana-Maria Fernandez, Philippe Negrel, Benoit Made, Nicolas Maubec, Christine Flehoc, Catherine Guerrot, Michaela Blessing, Benoit Henry, Jean-Charles Robinet
Summary: The water transfers and processes in the groundwaters and clay pore waters in Te ' gulines Clay in Brienne-Le-chateau, France were studied. The investigation revealed temporary perched water table in the first ridgetop, lateral groundwater transfers and runoff towards the valley, and the composition differences between groundwaters and pore waters. The groundwater had low TDS concentration and calcic-carbonate composition, while the pore waters were chemically heterogeneous and showed Ca-Mg-SO4 enrichment.
JOURNAL OF HYDROLOGY
(2023)
Article
Geochemistry & Geophysics
M. E. H. Cherchali, J. P. Liegeois, M. Mesbah, N. Daas, K. Amrous, S. A. Ouarezki
Summary: In the Central Hoggar region, understanding the flow and residence time of groundwater is crucial, especially in the arid region of Central Sahara. The study reveals the existence of different aquifers along fault lines, either in equilibrium with the Cenozoic volcanic system or the Precambrian basement. The Pan-African Adriane shear zone plays a significant role in determining the characteristics of groundwater near Tamanrasset City.
APPLIED GEOCHEMISTRY
(2022)
Article
Geochemistry & Geophysics
Yann Lucas, Francois Chabaux, Alain Clement, Bertrand Fritz, Coralie Ranchoux, Julien Ackerer, Eric Pelt, Anne-Desiree Schmitt, Peter Stille
Summary: The decrease in Sr concentrations in CS springs in the Strengbach catchment can be explained by the response of mineral weathering to pH increase. The different responses of CS springs to the increase in pH can be explained by the length of water residence time in the bedrock. The isotopic variations in CS springs can be explained by differences in transit time and saturation of water with respect to minerals.
Article
Energy & Fuels
Norbert Clauer
Summary: The study on pore waters from hydrocarbon-bearing sand layers in the Peciko gas reservoir in Indonesia revealed that the recovered leachates were likely contaminated during coring. The Sr isotopic ratios of the leachates increased with depth, indicating recent surface water supply to the upper pore waters. Additionally, minerals dissolved by dilute HCl showed lower Sr isotopic ratios than the associated pore waters, suggesting earlier crystallization prior to recent surface water flushing of the sediments.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Robert K. Poirier, Madison Q. Gaetano, Kimberly Acevedo, Morgan F. Schaller, Maureen E. Raymo, Reinhard Kozdon
Summary: This study introduces the Foraminiferal Preservation Index (FPI) to quantify the degree of diagenesis in benthic foraminifera, highlighting deep-ocean water mass composition as a primary driver of diagenesis over time. Stable isotope data from foraminiferal tests of varying preservation quality suggest significant biases in geochemical proxy records used to reconstruct past climate changes.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2021)
Article
Engineering, Geological
Olesya E. Lepokurova, Nikolai S. Trifonov
Summary: This study aims to calculate various geothermometers using the available chemical composition database of formation waters, to select the most suitable geothermometers for specific conditions, and to provide modern and accurate data for geothermometers in oil field formation waters. The results show that in the studied Tomsk region, Mg-Li and Na-Li geothermometers, as well as Na-K-Ca geothermometer with Mg correction, are the most suitable geothermometers.
BULLETIN OF THE TOMSK POLYTECHNIC UNIVERSITY-GEO ASSETS ENGINEERING
(2022)
Article
Medicine, Legal
Christine Lehn, Andreas Rossmann, Matthias Graw, Gareth R. Davies
Summary: The skeletal remains of a female corpse found in Burgenland, Austria in 1993 were identified 23 years later using biogeochemical isotope methods, which predicted her origin in the northern Caribbean. This case showcases the effectiveness of isotope biogeochemistry investigations in providing crucial information for identifying unknown individuals.
FORENSIC SCIENCES RESEARCH
(2022)
Article
Archaeology
Edgar S. Steenstra, Jasper Berndt, Stephan Klemme, Wim van Westrenen, Arlen Heginbotham, Gareth R. Davies
Summary: Excimer nano-second laser ablation inductively coupled plasma mass spectrometry (ns-LA-ICP-MS) is an important tool for chemical characterization of Cu alloys, but variable matrix-induced elemental fractionation poses challenges. This study systematically investigates these issues by analyzing the Cultural Heritage Alloy Reference Material Set (CHARM) of Cu alloy targets, determining the extent to which silicate glass reference materials can be used and the optimal internal standard for a wide range of compositions. By using external standards and internal element standardization, accuracy improvements can be achieved in analyzing brass and bronze artifacts.
Article
Geochemistry & Geophysics
Jiawang Wu, Zhifei Liu, Annie Michard, Kazuyo Tachikawa, Amalia Filippidi, Zhiwei He, Rick Hennekam, Shouye Yang, Gareth R. Davies, Gert J. de Lange
Summary: In marine sediments, the presence of barite can significantly affect the detrital Sr signal, especially in samples with high barite content. An additional NH4Cl leaching step is recommended to eliminate any remaining barite and obtain an unbiased detrital Sr signal. This is particularly important in areas with high biological productivity where sediments are characterized by abundant barite content.
Article
Chemistry, Analytical
S. W. Merkel, P. D'Imporzano, K. van Zuilen, J. Kershaw, G. R. Davies
Summary: The main factor restricting lead isotope analysis of metals from museum collections is the requirement for physical material. Portable laser ablation (pLA) has emerged as a minimally invasive method with key benefits for accurate and precise analysis.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Archaeology
Alice C. S. Knaf, Catarina Guzzo Falci, Habiba, Casper J. Toftgaard, Janne M. Koornneef, Annelou van Gijn, Ulrik Brandes, Corinne L. Hofman, Gareth R. Davies
Summary: This study analyzes the provenance and microwear of pre-colonial Caribbean jade objects from the Hatt Collection in the National Museum of Denmark. The findings suggest that the exchange of jade materials and finished objects in the pan-Caribbean region during the Ceramic Age was more complex than previously thought, involving sources in Guatemala, eastern Cuba, and the northern Dominican Republic. Additionally, the study reveals stronger ties between the ornaments from St. Croix and Indigenous communities on Puerto Rico compared to other Lesser Antillean Islands.
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2022)
Article
Optics
Bram J. A. Mooij, Ivo H. M. van Stokkum, G. R. Davies, Freek Ariese
Summary: Mars is a prime candidate for the search of extraterrestrial life, and endolithic life is often hidden below the surface. In the search for endolithic life on Mars, time-resolved Raman spectroscopy (TRRS) is a promising non-invasive detection method that can separate mineral Raman, bacterial Raman, and bacterial fluorescence signals.
Article
Geochemistry & Geophysics
P. Staudigel, A. J. Davies, M. Bernecker, M. Tagliavento, H. J. L. van der Lubbe, C. Nooitgedacht, N. Looser, S. M. Bernasconi, H. Vonhof, J. Fiebig
Summary: Geochemical analyses of carbonate minerals provide insight into temperature and water composition during formation, while fluid trapped in minerals can be used to reconstruct paleotemperatures and diagenetic processes. The Delta(47)-Delta(48) dual-clumped isotope thermometer is highly sensitive to water/carbonate ratio and behaves differently in rock-buffered and water-dominated systems. Heating experiments and evaluation of sampling methods demonstrate the potential of this approach in understanding kinetic processes in biomineralization and resolving ambiguities in climate records.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Geosciences, Multidisciplinary
F. J. C. Peeters, H. J. L. van der Lubbe, P. Scussolini
Summary: In this study, the BomDia algorithm was developed to improve age-depth models using bulk sediment composition as a potential source of information. The algorithm demonstrated significant improvements in predicting the ages of marine deposits compared to traditional linear interpolation methods.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2023)
Article
Medicine, Legal
Lisette M. Kootker, Saskia T. M. Ammer, Daniel J. Wescott, Gareth R. Davies, Hayley L. Mickleburgh
Summary: This study examines the alterations in isotope signatures of various human tissues throughout decomposition, finding significant shifts in the isotopic compositions of hair and bones, while dental samples record the most consistent data, making them better targets for forensic investigations.
INTERNATIONAL JOURNAL OF LEGAL MEDICINE
(2023)
Article
Anthropology
Joanna Ostapkowicz, Rick J. Schulting, Gareth R. Davies
Summary: This paper presents the first systematic study of pre-Columbian imported stone celts recovered from the limestone islands of the Lucayan archipelago. The study found that the Lucayan archipelago had a sufficient supply of stone celts and there was no clear evidence of size diminution with distance from sources. The majority of stone celts were jade, supplemented with other materials.
JOURNAL OF ANTHROPOLOGICAL ARCHAEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Igor K. Nikogosian, Antoine J. J. Bracco Gartner, Paul R. D. Mason, Douwe J. J. van Hinsbergen, Klaudia F. Kuiper, Uwe Kirscher, Sergei Matveev, Araik Grigoryan, Edmond Grigoryan, Arsen Israyelyan, Manfred J. van Bergen, Janne M. Koornneef, Jan R. Wijbrans, Gareth R. Davies, Khachatur Meliksetian
Summary: This study presents new geochronological, palaeomagnetic, and geochemical constraints to understand the geodynamic evolution of the South Armenian Block (SAB) and its Gondwanan origin. It reveals the timing of rifting and provides insights into the geological history of the SAB since the Permian.
Article
Multidisciplinary Sciences
Suzette Timmerman, Thomas Stachel, Janne M. Koornneef, Karen V. Smit, Rikke Harlou, Geoff M. Nowell, Andrew R. Thomson, Simon C. Kohn, Joshua H. F. L. Davies, Gareth R. Davies, Mandy Y. Krebs, Qiwei Zhang, Sarah E. M. Milne, Jeffrey W. Harris, Felix Kaminsky, Dmitry Zedgenizov, Galina Bulanova, Chris B. Smith, Izaac Cabral Neto, Francisco V. Silveira, Antony D. Burnham, Fabrizio Nestola, Steven B. Shirey, Michael J. Walter, Andrew Steele, D. Graham Pearson
Summary: The sublithospheric diamonds from Brazil and Guinea, with ages ranging from 450 to 650 million years ago, were formed in a subduction system near Gondwana. These diamonds were preserved beneath Gondwana for over 300 million years and might have enhanced supercontinent stability by attaching to the lithospheric keel.
Editorial Material
Astronomy & Astrophysics
Fulvio Franchi, Barbara Cavalazzi, Gareth Davies, Fernando Gomez
FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
(2023)
Article
Geochemistry & Geophysics
Natascia Luciani, Igor K. Nikogosian, Cees-Jan De Hoog, Gareth R. Davies, Janne M. Koornneef
Summary: This study quantifies crustal recycling in a complex subduction setting through examining Italian magmatism. The study reveals lower boron isotope values in Italian magmatism compared to previous studies on arc and post-collisional setting magmas. Phengite plays an important role in the source of Italian magmas.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Chemistry, Analytical
Yaakov Weiss, Steffen Jockusch, Janne M. Koornneef, Oded Elazar, Gareth R. Davies
Summary: This study applied a new laser ablation technique combined with mass spectrometry measurements to analyze trace elements and radiogenic isotopes in high-density fluid microinclusion-bearing diamonds. The results showed that the new technique produced enough material for quantitative analysis of rare-earth elements and revealed that HDF microinclusions within individual diamonds are rather homogeneous in their isotopic composition.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)