Article
Engineering, Chemical
Wei Xiong, Lie-Hui Zhang, Yu-Long Zhao, Jian-Fa Wu, Jin-Hui Huang, Jian Yao
Summary: The study introduces an improved CPA-vdW model to predict the phase behavior of mixtures, with accurate predictions for different systems, which is helpful for simulating the process of CO2 injection to extract CH4.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Geochemistry & Geophysics
Jenny S. Nakai, Anne F. Sheehan, Rachel E. Abercrombie, Donna Eberhart-Phillips
Summary: Using seismometers on the ocean floor and on land, seismic attenuation near the Hikurangi trench offshore New Zealand was investigated. The study revealed high attenuation above a recurring shallow slow-slip event and within the subducting Hikurangi Plateau. The presence of high temperatures, melt, fluids, and fractures in the region was inferred through the analysis of seismic attenuation.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Chemistry, Physical
Enyuan Hu, Qinghao Li, Xuelong Wang, Fanqi Meng, Jue Liu, Jie-Nan Zhang, Katharine Page, Wenqian Xu, Lin Gu, Ruijuan Xiao, Hong Li, Xuejie Huang, Liquan Chen, Wanli Yang, Xiqian Yu, Xiao-Qing Yang
Summary: In the highly delithiated LiCoO2, oxygen redox occurs globally rather than forming localized dimerization. Experimental techniques like RIXS and NPDF, along with theoretical calculations, provide insights into achieving reversible deep delithiation and high energy density for LiCoO2-based electrodes.
Article
Chemistry, Applied
Cong Chen, Liang Chen, Yangguang Hu, Ke Yan, Ting Wang, Youju Huang, Chao Gao, Junjie Mao, Shoujie Liu, Benxia Li
Summary: This study demonstrates the successful conversion of CO2 to methane using the delicately designed In/TiO2-VO photocatalyst. The relationship between the structure and performance of the photocatalyst is clarified through experimental and theoretical analyses. This work provides a new strategy for the development of effective photocatalysts.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Geochemistry & Geophysics
Duncan E. Stevens, Timothy J. Henstock, Lisa C. McNeill
Summary: The study reveals that shallow slip on the plate-boundary fault during the 2004 Aceh-Andaman Earthquake was related to thick incoming sediments on the oceanic plate, with the accumulation of thick Nicobar Fan and trench wedge sediments leading to high heat flux within the basal sediments. This pre-subduction dehydration of large portions of the accreted sediment column strengthens the decollement beneath the prism, suggesting potential co-seismic velocity-weakening behavior close to the trench in similar subduction zones.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geosciences, Multidisciplinary
Shujuan Su, Ying Li, Zhi Chen, Qifeng Chen, Zhaofei Liu, Chang Lu, Le Hu
Summary: The Zhangjiakou-Penglai Fault Zone has been analyzed for its geothermal fluids's chemistry and its relationship with regional and local tectonics. The study found that the geothermal waters exhibited spatial variations along the fault zone, different tectonic segments experienced different geochemical processes, and the origin and evolution of geothermal fluids were influenced by fault-fluid relationships.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Tim Lichtenberg, Dan J. Bower, Mark Hammond, Ryan Boukrouche, Patrick Sanan, Shang-Min Tsai, Raymond T. Pierrehumbert
Summary: This study presents a coupled numerical framework to investigate the early evolution of Earth-sized rocky planets with idealized clear-sky atmospheres dominated by different volatile elements. The results show that the central metrics of early planetary evolution are controlled by the dominant volatile and outgassing history of the planet, with thermal sequences falling into three general classes based on cooling timescale. The numerical experiments demonstrate the capabilities of the modeling framework to link the interior and atmospheric evolution of rocky exoplanets with multiwavelength astronomical observations.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2021)
Article
Chemistry, Physical
Kevin M. Hickson, Somnath Bhowmick, Yury V. Suleimanov, Joao Brandao, Daniela V. Coelho
Summary: Experimental and theoretical study on gas-phase reactions between O(D-1) and H2O and O(D-1) and D2O at room temperature and below were conducted, revealing divergences between experimental and theoretical results at low temperatures, which require further discussion on potential origins.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Geochemistry & Geophysics
Shao-Rui Zhao, Zhan-Ke Li, Zu-Wei Lin, Jian-Feng Gao, Hua-Shan Sun, Martin Yan Hei, Xin-Fu Zhao
Summary: The Jiaodong Peninsula in China is known for its world-class gold deposits, but the source and evolution of hydrothermal fluids responsible for gold mineralization remains debated. The Linglong gold deposit, one of the largest in the region, is hosted within a Late Jurassic granite and controlled by fault structures. The study highlights the use of lithium and oxygen isotopes to characterize the source of hydrothermal fluids and fluid-rock interactions.
Article
Electrochemistry
Prachi Pragnya, Daniel Gall, Robert Hull
Summary: In situ transmission electron microscopy (TEM) techniques were used to study the corrosion of Inconel-625 alloy under different conditions. The results showed that the corrosion rate increased significantly at high temperatures and in the presence of oxygen. Salt hydration also accelerated the corrosion process. The researchers suggested that adjusting the composition of chloride melts could reduce the corrosion rate.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Geochemistry & Geophysics
Fang-Hua Cui, Chao Zhang, Dai-Tian Jin, Lu-Yuan Wang, Ji-Lei Gao, Ming Ma, Ya-Dong Li
Summary: This study presents new mineral chemical data of the Jinling skarn deposit in western Shandong Province, China, and provides insights into the formation processes of the iron skarn deposit. The results indicate that the Jinling deposit is hydrothermal and the metallogenic iron is enriched by leaching of Fe-rich fluids derived from primitive magmatic melt from the solidified diorites.
Article
Biochemical Research Methods
Amanda R. Bubas, Evan Perez, Luke J. Metzler, Scott D. Rissler, Michael J. Van Stipdonk
Summary: Electrospray ionization (ESI) is used to generate gas-phase uranyl complexes for tandem mass spectrometry studies. Experimental and DFT calculations show dissociation of nitrate ligands leads to interesting product ions, with O-2 and NO2 being eliminated from the complexes.
JOURNAL OF MASS SPECTROMETRY
(2021)
Article
Geochemistry & Geophysics
Zhihai Zhang, Yana Fedortchouk, Jacob J. Hanley, Mitchell Kerr
Summary: This study conducted experiments under kimberlite ascent conditions to examine the relationship between the H2O:CO2 ratio of the fluid and diamond resorption, finding that the morphology of diamond resorption depends on the proportions of end-member aqueous and carbonic fluids. This suggests that the bulk composition of the fluid plays a role in determining diamond resorption characteristics.
Article
Environmental Sciences
Fanyan Yang, Jicheng Zhong, Shaoming Wang, Xiaokang Hu, Hongwei Wang, Mengyao Tang, Min Zhang, Chuanzhe Sun, Lei Zhang
Summary: In this study, the temporal and spatial variability of CH4 concentrations and diffusive fluxes were investigated in a temperate river-reservoir system in North China. The results showed significant heterogeneity in CH4 concentrations and fluxes, with the river inflow zone being a hotspot for CH4 emissions and autumn having the highest CH4 flux. Water temperature, water depth, and water productivity were identified as the main factors regulating CH4 concentration and diffusive flux.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
Article
Geology
Caiyun Lan, Xiaoping Long
Summary: The Paleoproterozoic Great Oxidation Event (GOE) led to a dramatic change in atmospheric composition, making oxygen a persistent component in global surface processes. However, the distribution of dissolved oxygen in the ocean during this event remains unclear. By analyzing samples from the Upper Taihua Group in the Lushan area, researchers found evidence of redox-stratified seawater and a marine depositional setting. The presence of both oxic and suboxic/anoxic water in the ocean during the GOE was revealed, suggesting extensive redox stratification.
ORE GEOLOGY REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
N. Zaheri-Abdehvand, A. Tarantola, I Rasa, S. Hassanpour, C. Peiffert
JOURNAL OF ASIAN EARTH SCIENCES
(2020)
Article
Geosciences, Multidisciplinary
Leandre Ponthus, Michel de Saint Blanquat, Damien Guillaume, Marc Le Romancer, Norman Pearson, Suzanne O'Reilly, Michel Gregoire
Article
Chemistry, Physical
R. Mosser-Ruck, J. Sterpenich, N. Michau, M-C Jodin-Caumon, A. Randi, M. Abdelmoula, O. Barres, M. Cathelineau
APPLIED CLAY SCIENCE
(2020)
Article
Geochemistry & Geophysics
Georges Ona-Nguema, Delphine Guerbois, Celine Pallud, Jessica Brest, Mustapha Abdelmoula, Guillaume Morin
Article
Geochemistry & Geophysics
Constantinos Mavrogonatos, Panagiotis Voudouris, Federica Zaccarini, Stephan Klemme, Jasper Berndt, Alexandre Tarantola, Vasilios Melfos, Paul G. Spry
Review
Geochemistry & Geophysics
Panagiotis Voudouris, Vasilios Melfos, Constantinos Mavrogonatos, Adonis Photiades, Eugenia Moraiti, Branko Rieck, Uwe Kolitsch, Alexandre Tarantola, Christophe Scheffer, Denis Morin, Olivier Vanderhaeghe, Paul G. Spry, James Ross, Konstantinos Soukis, Markos Vaxevanopoulos, Igor V. Pekov, Nikita V. Chukanov, Andreas Magganas, Marianna Kati, Athanasios Katerinopoulos, Stefanos Zaimis
Summary: The Lavrion area in Greece is located in the back-arc region of the active Hellenic subduction zone, and underwent multiple stages of metamorphism and deformation due to the collision and collapse of the Cycladic belt between the Eocene and the Miocene. During the Miocene, movement of a large-scale detachment fault system facilitated exhumation and the emplacement of magmatic rocks, leading to the formation of the famous Lavrion silver deposits with unique mineralization styles. The Lavrion deposit contains a high number of different elements and minerals, and is distinguished by being the type-locality for 23 of them, making it a potential candidate for future UNESCO Global Geopark status.
Article
Geochemistry & Geophysics
Asfaw Zegeye, Cedric Carteret, Martine Mallet, David Billet, Tom Ferte, Crosby S. Chang, Thomas Hauet, Mustapha Abdelmoula
Summary: Experimental and analytical results show that antimony (Sb) can affect the precipitation and formation of biogenic minerals in microbiologically mediated redox reactions. Sb(V) can stabilize the structure of green rust, preventing its transformation into more stable phases.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Environmental Sciences
Abdellatif Elghali, Mostafa Benzaazoua, Hassan Bouzahzah, Mustapha Abdelmoula, James J. Dynes, Heather E. Jamieson
Summary: When mine tailings are exposed to water and oxygen, acid mine drainage (AMD) can be generated, leading to the release of metal(oid)s into the environment. Fresh and oxidized tailings show significant differences in their physical, mineralogical, and geochemical properties, with oxidized tailings releasing large amounts of iron, sulfur, and zinc.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Wei-Jyun Wang, Frankie Roberts, Stena Peterson, Su Ha, Louis Scudiero, Romain Coustel, Martine Mallet, Mustapha Abdelmoula, Christian Ruby
Summary: The synthesized palladium-coated iron-iron oxide nanoparticles exhibit superior performance in formate oxidation and electrochemical CO2 reduction to formate. Analysis methods confirm that electronic perturbation and changes in chemical properties on the catalyst surface play a significant role in enhancing its performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Computer Science, Interdisciplinary Applications
Van-Hoan Le, Marie-Camille Caumon, Alexandre Tarantola
Summary: Numerous calibration data linking Raman spectral parameters with PVX properties of different gases have been published, but discrepancies exist between them. This paper examines the inter-laboratory applicability of existing calibration data and provides universal calibration data and a user-friendly interface for measurements. The FRAnCIs Python interface facilitates the application of these calibrations and estimates measurement uncertainty.
COMPUTERS & GEOSCIENCES
(2021)
Article
Geochemistry & Geophysics
Fatima Meite, Thomas Hauet, Patrick Billard, Tom Ferte, Mustapha Abdelmoula, Asfaw Zegeye
Summary: Anthropogenic activities have resulted in the accumulation of Pb in the environment, posing a threat to ecosystems. This study investigates the impact of Pb on the bioreduction and transformation processes of iron oxides, which play a crucial role in controlling the environmental fate of Pb. The findings highlight the sensitivity of magnetism as a monitoring method and provide insights into the behavior of Pb in the presence of iron-reducing bacteria.
Article
Geochemistry & Geophysics
Fatima Meite, Mustapha Abdelmoula, Patrick Billard, Thomas Hauet, Asfaw Zegeye
Summary: This study investigates the changes in Pb-bearing ferrihydrite during bioreduction, finding that Pb doping leads to a decrease in reduction rate and extent, as well as influencing the formation of secondary minerals. Through redox cycling, Pb significantly sorbs onto the minerals that are formed.
Article
Chemistry, Physical
Liva Dzene, Patrick Dutournie, Jocelyne Brendle, Lionel Limousy, Jean-Marc Le Meins, Laure Michelin, Loic Vidal, Simon Gree, Mustapha Abdelmoula, Christelle Martin, Nicolas Michau
Summary: The synthesis of iron-rich phyllosilicates with different Fe/Si molar ratios was attempted in this study. The results revealed that the stability field of the 2:1 clay mineral was wider and less sensitive to redox conditions compared to the 1:1 clay mineral. Additionally, heterogeneous phases were formed.
CLAYS AND CLAY MINERALS
(2022)
Article
Chemistry, Multidisciplinary
M. Abdelmoula, C. Ruby, M. Mallet, J. Ghanbaja, R. Coustel, Louis Scudiero, Wei-Jyun Wang
Summary: Synthesized Fe@FeOx nanoparticles were characterized using various spectroscopic techniques and microscopy. Different phases, including metallic iron, ferrous hydroxide, magnetite, and ferric oxide, were identified in the core-shell structure. Upon coating the supporting material, the ferrous hydroxide reacted with Pd2+aq to form Fe@FeOx/Pd nanoparticles.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Geochemistry & Geophysics
Louise Lenoir, Thomas Blaise, Diana Chourio-Camacho, Antonin Richard, Alexandre Tarantola, Pierre Agrinier, Thomas Rigaudier, Gael Monvoisin, Gerard Bardoux, Benjamin Brigaud, Jocelyn Barbarand
Summary: This study provides new constraints on the fluid flow system at the origin of two F-Ba deposits located at the unconformity between the south of the Paris Basin and the northern edge of the French Massif Central. Microthermometry and bulk crush-leach analyses were used to determine isotope ratios of mineralizing fluids and the composition of fluid inclusions hosted by fluorite. The findings suggest that the mineralizing fluids originated from a brine, likely Triassic evaporated seawater compatible with nearby dolomitic facies. The composition of the brine evolved from hydrothermal alteration of the Variscan basement and partial dissolution and replacement of the host sedimentary rocks. The study also suggests chlorine isotope fractionation by ion filtration in clay-rich horizons. Fluorite crystallized at temperatures higher than the host Triassic sedimentary rocks. The ascending brines in the Early Cretaceous experienced pressure and temperature drops and possibly mixed with SO4-rich pore water of the sedimentary rocks, resulting in precipitation of silica followed by fluorite and barite, forming stratabound deposits similar to those found in Western Europe.
MINERALIUM DEPOSITA
(2023)
Article
Geochemistry & Geophysics
Huichuan Liu, Alan R. Hastie, Chiara Maria Petrone
Summary: This study conducted isotope analyses on two ocean island basalt (OIB)-associated enriched mafic intrusions in the Yunnan-Burma region, and found that these rocks may have originated from the subduction recycling of marine sediments and altered oceanic crust.
Article
Geochemistry & Geophysics
L. Notini, M. Scambelluri, A. Tommasi, A. Zanetti, F. Ferri, A. Rodriguez-Vargas, E. Rampone
Summary: This study provides important petrologic information on the mantle wedge above an active subduction zone in Southern Colombia. The researchers analyzed a unique suite of rock samples and found evidence of hydration, metasomatism, and partial melting in the mantle wedge. They also observed variations in lithotypes, textures, and mineral abundance, indicating different interactions with melts and fluids. This study sheds light on the complex petrological processes occurring in the mantle wedge and contributes to our understanding of subduction zone dynamics.
Article
Geochemistry & Geophysics
Sourav Bhattacharjee, Aniket Chakrabarty, Roger H. Mitchell, Suresh Chandra Patel, Evgeniy N. Kozlov, Ekaterina N. Fomina, Monojit Dey, Supratim Pal
Summary: The Hogenakkal complex in India consists of silicate-rich and silicate-poor carbonatites and clinopyroxenites. The formation of carbonatite is influenced by silicate minerals. The carbohydrothermal mineralization in the carbonatites is induced by magma-derived fluids and interactions with the surrounding rocks.
Article
Geochemistry & Geophysics
Jia-Min Wang, Kyle Patrick Larson, Jin-Jiang Zhang, Liang Zhao, Fu-Yuan Wu
Summary: The role of collisional belts in the global carbon budget is controversial. This study reveals a previously unrecognized carbon source in the collisional orogen of the Himalayas, where metamorphism of carbonate-bearing rocks in the hanging wall resulted in significant CO2 degassing.
Article
Geochemistry & Geophysics
Joseph Martial Akame, Elson Paiva Oliveira, Vinciane Debaille, Marc Poujol, Bernhard Schulz, Dieudonnee Bisso, Fabien Humbert, Serge Parfait Koah Na Lebogo, Philmont Zo'o Zame
Summary: Archean granitoids play key roles in the crustal evolution and can provide important insights into early geologic processes.
Article
Geochemistry & Geophysics
Xiguang Huang, Jun He, Jingxin Zhao, Jingzhao Dou, Weiyong Li, Aimin Hu, Ge Liu, Yiru Ji, Fukun Chen, Shuangqing Li
Summary: This study investigates the zircon ages and whole-rock geochemical data of Late Paleozoic magmatic rocks in the Western Yunnan Tethyan belt to identify the origin and mechanism of mantle melting. The results suggest that these magmatic rocks may originate from different mantle domains that were metasomatized by slab-derived fluids and sediment-derived melts.