Article
Engineering, Geological
O. Casablanca, G. Biondi, E. Cascone
Summary: The method of characteristics was used to develop a rigorous solution for the evaluation of seismic bearing capacity of shallow foundations resting on homogenous fully submerged soil, taking into account the effect of earthquake-induced pore water pressures. The solution, derived with reference to both the Hill and Prandtl plastic mechanisms, provides a general valid solution that has been verified against finite element analysis results.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Geology
Christoph A. Heinrich, James A. D. Connolly
Summary: The loss of magmatic sulfides can explain the deficit of copper in evolved arc magmas and the depletion of Cu/Ag ratio in the continental crust. We investigated whether sulfides can be mechanically entrained with rising magmas and how this would impact their geochemical fate in the upper crust.
Article
Geochemistry & Geophysics
Max S. Sharpe, Simon J. Barker, Shane M. Rooyakkers, Colin J. N. Wilson, Isabelle Chambefort, Michael C. Rowe, C. Ian Schipper, Bruce L. A. Charlier
Summary: The concentrations of sulfur, chlorine, and fluorine in volcanic eruptive materials can provide insights into geothermal fluid compositions, ore deposit formation, and volcanic eruption processes and impacts. By studying these concentrations in different host materials, we can decipher the origins and evolution of magmas.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2022)
Article
Geochemistry & Geophysics
Alice Alex, Zoltan Zajacz
Summary: Fluids containing chlorine and sulfur play a critical role in transporting ore metals, but there is limited experimental data on the speciation and solubility of these metals in these fluids. This study investigated the effect of oxygen fugacity on the solubility of Cu, Ag, and Au in high-temperature fluids. The results provide insights into the behavior of these metals in ore-forming environments.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geology
L. Chavarria, C. Bustamante, A. Cardona, G. Bayona
Summary: By analyzing the geological characteristics of volcanic and intrusive rocks in the Northern Andes from the Early Jurassic to Early Cretaceous, it is revealed that there were variations in crustal thickness and magmatic saturation temperatures during this period, indicating that the magma source was formed in a crust 35 to 50 km thick, with two phases characterized by thick crust during the arc evolution.
INTERNATIONAL GEOLOGY REVIEW
(2022)
Article
Geosciences, Multidisciplinary
Tingting Zheng, Jian Lin, Hans Schouten, Deborah K. Smith, Emily Klein, Ross Parnell-Turner
Summary: This study uses gravity data to analyze the crustal structure and melt distribution beneath the propagating Cocos-Nazca spreading center in the Galapagos triple junction region. The standard thermal model applied to the mantle Bouguer gravity anomaly does not accurately determine crustal thickness. A smoothing filter applied to the model with different widths explains the flattening of the gravity anomaly and suggests different concentrations of partial melt in the mantle. The residual gravity gradient along the spreading center is similar to that of the East Pacific Rise, indicating similar shallow mantle properties.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Albert Chang-sik Cheong, Min-Ji Jung, Hui Je Jo, Jeongmin Kim, Shinae Lee, Youn-Joong Jeong
Summary: The study investigates the early evolution of the Cretaceous magmatic flare-up in Northeast Asian continental margins using geochronological and geochemical data. Lithospheric thinning and asthenospheric upwelling played vital roles in igniting the magmatic flare-up. The involvement of lithospheric mantle and crustal basement in magma generation during this event is indicated.
GEOSCIENCE FRONTIERS
(2023)
Article
Energy & Fuels
Shi Shen, Yanghui Li, Xiang Sun, Lei Wang, Yongchen Song
Summary: This study conducted mechanical experiments to investigate the effects of temperature and pore pressure on methane hydrate-bearing sediments (MHBSs). The results showed that with decreasing temperature and increasing pore pressure, the strength of the samples increased, and the dilatant volumetric strain also increased. The study also established a numerical relation between strength, temperature, and pore pressure.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Mike Cassidy, Alexander A. Iveson, Madeleine C. S. Humphreys, Tamsin A. Mather, Christoph Helo, Jonathan M. Castro, Philipp Ruprecht, David M. Pyle
Summary: The partitioning of halogens in magmas is important for understanding geological processes. This study provides new data on fluid/melt partition coefficients for halogens under different conditions, and evaluates the effects of changing fluid composition on partitioning. The results show that partition coefficients are influenced by pressure, temperature, and fluid composition. The experimental results provide realistic constraints on halogen partitioning in natural conditions and can be useful for the interpretation of melt inclusions and volcano gas data.
AMERICAN MINERALOGIST
(2022)
Article
Geochemistry & Geophysics
Ming Jian Cao, Noreen J. Evans, Pete Hollings, David R. Cooke, Brent I. A. McInnes, KeZhang Qin
Summary: The trace elemental and isotopic signatures in apatite can be modified during hydrothermal alteration. However, the characteristics like rare earth elements, Y, U, Th, Zr, and Nd isotope composition remain preserved, providing insight into the origin, chemistry, and evolution of primary magma and ore-forming hydrothermal fluids.
Article
Geosciences, Multidisciplinary
Qie Qin, Tao Wang, He Huang, Zhaochong Zhang, Ying Tong, Peng Song, Jianjun Zhang
Summary: The geochemical study of late Paleozoic peraluminous granitic plutons in the South Tianshan Belt reveals they were likely formed from crustal reworking, providing crucial insights into the region's geological history.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Chemistry, Physical
Paul Marshall, James B. Burkholder
Summary: Rate coefficients for reactions of H2SO4 with OH, O, and Cl radicals were estimated computationally. The formation of HOSO3 radical was observed as a product of the reactions, and its possible formation through OH + SO3 addition was also investigated. These results are crucial for understanding the atmospheric impact of these reactions.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Geochemistry & Geophysics
J. H. F. L. Davies, A. Marzoli, H. Bertrand, N. Youbi, M. Ernesto, N. D. Greber, M. Ackerson, G. Simpson, A-S Bouvier, L. Baumgartner, T. Pettke, F. Farina, H. Ahrenstedt, U. Schaltegger
Summary: Zircon occasionally crystallizes in evolved melt pockets in mafic large igneous province (LIP) magmas and provides high-precision age constraints on LIP events. The study suggests that upper crustal assimilation during the emplacement of the CAMP likely led to zircon saturation in some cases, supported by heterogeneous isotopic and elemental compositions in LIP zircon.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yangyang Sun, Jun Liang, Philipp Brandt, Alex Spiess, Secil Oeztuerk, Christoph Janiak
Summary: The robust cucurbituril-MOF composite CB6@MIL-101-Cl was synthesized by a wet impregnation method and a concomitant OH-to-Cl ligand exchange, exhibiting excellent adsorption performance for SO2 at low pressure and strong recyclability.
Article
Geochemistry & Geophysics
Simone Papa, Giorgio Pennacchioni, Alfredo Camacho, Kyle P. Larson
Summary: This study investigates pseudotachylytes within the Serre Massif in Calabria, Southern Italy, and suggests that these pseudotachylytes were formed by shallow seismic faulting. Modelling and microstructural observations indicate that the rocks were formed at high temperatures.
