Article
Geosciences, Multidisciplinary
Yang Liao
Summary: This study uses an analytical model to explore the transport characteristics of melt, pressure, and heat within an idealized crystal mush layer/column, and finds the existence of transport asymmetry. The observed temperature gradient in magma mushes in the crust may result in different triggering mechanisms for magmatic unrest. The results highlight the importance of further exploration of the transport properties in the crystal mush.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geochemistry & Geophysics
Shuo Yin, Changqian Ma, Jiannan Xu
Summary: This study investigates the magma reservoir processes in the Baishiya granodiorite in northern Tibet Plateau and proposes a multistage formation process within the concept of crystal mush model. The gradual rejuvenation and convective self-mixing of crystal mush, along with recycling of antecrysts, contribute to the unique geochemical signatures observed in the granodiorite.
Article
Geosciences, Multidisciplinary
A. Metcalfe, S. Moune, J. -C Komorowski, R. Robertson, T. E. Christopher, E. P. Joseph, R. Moretti
Summary: Understanding variations in eruptive style and defining the processes and controls on different eruption styles is particularly important at arc volcanoes. This is due to the range of eruption styles which vary from phreatic behaviour to effusive magma extrusion and large explosive Plinian eruptions.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geochemistry & Geophysics
Jun Wang, Qiang Wang, Ji-Peng Zeng, Quan Ou, Wei Dan, Alexandra Yang Yang, Yi-Wei Chen, Gangjian Wei
Summary: The reaction mechanism between tholeiitic magma and crystal-rich mushes has been discovered, providing important insights into the formation of continental basalts.
JOURNAL OF PETROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Charlys Vaz de Sant'Anna Neves, Ciro Alexandre Avila, Reiner Neumann, Everton Bongiolo, Fabiano Richard Leite Faulstich, Wilson Teixeira
Summary: This study reveals that the titanite-centered ocellar texture may be formed through the interaction between mafic and felsic end-members. The formation process involves multiple stages, including the injection of a leucogranitic melt into a biotite-rich tonalitic hybrid mush and the destabilization of biotite resulting in the crystallization of titanite.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2023)
Review
Geosciences, Multidisciplinary
Michele Paulatto, Emilie E. E. Hooft, Kajetan Chrapkiewicz, Benjamin Heath, Douglas R. Toomey, Joanna V. Morgan
Summary: Seismic imaging methods have been crucial in understanding the physical properties and dynamics of magmatic systems. However, there are still challenges in imaging volcanoes due to the complex physics of wave propagation. This review summarizes the advantages and limitations of common imaging methods and proposes best practices for their implementation. The seismological evidence suggests that magma storage is dominated by low-melt fraction crystal mush, but small and medium-sized high-melt fraction magma chambers cannot be ruled out due to the limitations of seismic resolution. The use of multiple tomographic imaging methods and wider adoption of methods that use more of the seismic wavefield promise to overcome these limitations and provide more reliable constraints on melt fractions.
FRONTIERS IN EARTH SCIENCE
(2022)
Review
Geosciences, Multidisciplinary
B. M. Wallrich, C. F. Miller, G. A. R. Gualda, J. S. Miller, N. H. Hinz, J. E. Faulds
Summary: The Searchlight pluton (SLP) and coeval Highland Range volcanic sequence (HRV) are believed to represent intruded and erupted counterparts, and their exposed crustal section provides an illustration of a large, intermediate to silicic magmatic system. This study summarizes three decades of research on this system, emphasizing the direct connections between SLP and HRV and providing insights into the storage, extraction, transport, and eruption processes. New results reveal that the youngest silicic rocks in both SLP and HRV are distinctive rhyolite porphyries (RP) that are essentially identical in texture, mineral assemblage, and elemental compositions.
EARTH-SCIENCE REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Shaojie Gu, Yi Cui, Sungmin Yoon, Zizheng Wang, Yasuhiro Kimura, Yuhki Toku, Yang Ju
Summary: The {101} texture of deformed face-centered cubic metals can be alleviated by high-density pulsed electric current (HDPEC) treatment, which also leads to recovery of deformed grains, resulting in random grain orientation and equiaxed grain morphology to recover anisotropy in the deformed metals. This method provides a promising and cost-effective way to modify the microstructure of materials.
Article
Metallurgy & Metallurgical Engineering
Chang Songtao, Zhang Fang, Sha Yuhui, Zuo Liang
Summary: Recrystallization texture formation is determined by the competition among different texture components during nucleation and grain growth. The stored energy and orientation gradient are influenced by the grain orientation in the deformed microstructure. Segregation elements can hinder the nucleation and growth of recrystallization grains and prevent texture components with kinetic advantages from invading adjacent deformed grains. Investigating the competitive relations among recrystallization texture components under the intervention of segregation elements is valuable for precise recrystallization texture design and control.
ACTA METALLURGICA SINICA
(2023)
Article
Materials Science, Multidisciplinary
Shardul Kamat, Xuxiao Li, Benjamin Stump, Alex Plotkowski, Wenda Tan
Summary: Experimental work has shown promising results in controlling additive manufacturing metal grain structure. However, the effects of processing parameters on the grain structure are difficult to understand and predict solely from experiments. Therefore, a modeling framework is developed to couple a macro-scale thermal model and a meso-scale microstructure model. This framework is applied to electron beam additive manufacturing to study the complex solidification conditions and resulting grain structures. The framework has the potential to significantly reduce computational expenses and be applied to component-level problems.
MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
V. Yu Danilchenko, Ye M. Dzevin, R. M. Delidon
Summary: This study reviews and investigates the formation regularities of grain structure in metastable iron-nickel alloys under high temperature gradients during melt hardening, and its effects on martensitic transformations in thin ribbons. The comparison of texture between austenitic and martensitic phases on different sides of thin ribbons is carried out. The study also analyzes the factors determining the heterogeneous distribution of martensitic phase in local areas of the ribbon, such as size effects, residual stresses, and changes in chemical composition of the austenitic phase.
USPEKHI FIZIKI METALLOV-PROGRESS IN PHYSICS OF METALS
(2022)
Article
Geology
Juan A. Dahlquist, Matias M. Morales Camera, Pablo H. Alasino, Hugo Tickyj, Miguel A. S. Basei, Carmen Galindo, Juan A. Moreno, Sebastian Rocher
Summary: While Devonian calcalkaline magmatism is absent north of 33 degrees S, it is well developed to the south. The presence of plutons with Early Devonian ages and similar geochemical characteristics to Carboniferous arc granitoids suggests the existence of an Early Devonian magmatic arc. The data also indicate tectonic segmentation in the pre-Andean margin controlling the presence or absence of Devonian subduction-related magmatism.
INTERNATIONAL GEOLOGY REVIEW
(2022)
Correction
Geology
R. Saez, F. Nocete, J. I. Gil Ibarguchi, M. Rodriguez-Bayona, N. Inacio, D. Quispe, J. Rodriguez, J. F. Santos Zalduegui
Summary: One page is missing in the original PDF online version of the article.
JOURNAL OF IBERIAN GEOLOGY
(2021)
Article
Geochemistry & Geophysics
F. A. Caxito, M. Heilbron, C. M. Valeriano, H. Bruno, A. Pedrosa-Soares, F. F. Alkmim, F. Chemale, L. A. Hartmann, E. Dantas, M. A. S. Basei
Summary: A robust dataset from Neoproterozoic igneous rocks in southeastern South America reveals a protracted consumption process of oceanic lithosphere, forming a Himalayas-sized orogenic belt. Time dependent isotopic variation trends suggest that Tonian-Cryogenian magmatic rocks formed in intra-oceanic supra-subduction settings.
GEOCHEMICAL PERSPECTIVES LETTERS
(2021)
Article
Geosciences, Multidisciplinary
S. Siegesmund, S. Oriolo, B. Schulz, T. Heinrichs, M. A. S. Basei, B. Lammerer
Summary: The study of metasedimentary rocks in the Austroalpine, South Alpine and Penninic basement domains reveals their pre-Variscan tectonic evolution. The research suggests a continuum of tectonosedimentary processes from Late Ediacaran to Carboniferous periods, with detrital zircon samples mainly originating from the northeastern Saharan Metacraton and the Sinai basement. The Alpine basement, comprising Pan-African metasedimentary and subordinate metaigneous rocks, underwent significant reworking during the Paleozoic orogenic evolution.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2021)
Article
Geology
Lucas R. Tesser, Carlos E. Ganade, Roberto F. Weinberg, Miguel A. S. Basei, Renato Moraes, Laisa A. Batista
Summary: This study reports the first identification of sapphirine-bearing ultrahigh-temperature metamorphic rocks in the Borborema Province in NE Brazil, providing insights into their formation mechanisms and timing. The results suggest a correlation between high geothermal gradients, continental rifting events, and the opening of oceanic basins, as well as their association with the formation of the Columbia supercontinent.
JOURNAL OF METAMORPHIC GEOLOGY
(2022)
Article
Chemistry, Analytical
B. Puente-Berdasco, J. Rodriguez, D. Ballesteros, A. Painchault, C. Nehme, D. Mouralis, J. I. Gil-Ibarguchi, A. Martin-Izard, J. I. Garcia Alonso
Summary: A reliable method for measuring the Sr-87/Sr-86 ratio in carbonates without off-line strontium separation was developed and validated. The results were in agreement with expected values, making it suitable for geological studies.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Geosciences, Multidisciplinary
Mathias Hueck, Sebastian Oriolo, Pedro Oyhantcabal, Beatrix M. M. Heller, Klaus Wemmer, Siegfried Siegesmund, Miguel A. S. Basei
Summary: The amalgamation of southwestern Gondwana during the late Neoproterozoic Brasiliano/Pan-African orogenic cycle involved tectonic interaction of various cratons and basement fragments. A review of U-Pb and Lu-Hf spot analyses in zircon provides new insights on the pre-Brasiliano crustal growth and highlights similarities between different basement fragments. The results indicate an Archean origin for these fragments and intense orogenic reworking during the Rhyacian and Orosirian.
PRECAMBRIAN RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
P. Vesela, S. Oriolo, M. A. S. Basei, B. Lammerer, S. Siegesmund
Summary: Coupled U-Pb and Lu-Hf LA-ICP-MS analysis of zircon samples from metasedimentary sequences in the Western Tauern Window provided insights into the deposition and magmatic history of the region. The results indicate a protracted period of sedimentation and magmatism between the Late Paleozoic and the Mesozoic. The Hf isotopic data suggest a transition from post-collisional processes to intracontinental extension during the Late Paleozoic. These findings have significant implications for understanding the paleogeography and tectonic evolution of the region.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Jonatan A. Arnol, Norberto J. Uriz, Carlos A. Cingolani, Paulina Abre, Miguel A. Stipp Basei
Summary: This paper investigates the sedimentary provenance of the Silurian to Devonian siliciclastic successions in the central region of the San Juan Precordillera in Argentina. The study analyzes petrography, detrital zircon analyses, and isotopic data to determine the composition and sources of the sediments. The results reveal an evolution trend in the sediment composition and provide insights into the correlation of equivalent units in other foreland basins.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Brian L. Munoz, Eliel Enriquez, Augusto F. Morosini, Manuel Demartis, Ariel E. Ortiz Suarez, Lucio P. Pinotti, Fernando J. DEramo, Rodolfo O. Christiansen, Miguel A. Basei, Pablo M. Grosso Cepparo, Diego S. Pagano, Gabriel A. Ramos
Summary: A comprehensive study of the El Hornito Pluton in the Sierra Grande de San Luis, Argentina, provides insights into the composition, crystallization age, and depth of emplacement. The study reveals that the El Hornito Pluton was emplaced at a greater depth compared to other granites in the region, and the emplacement events occurred first in the west and later in the east.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Santiago N. Gonzalez, Gerson A. Greco, Antonella Galetto, Sofia Bordes, Miguel A. S. Basei, Martin N. Parada, Raul E. Giacosa, M. Josefina Pons
Summary: This study evaluates new geochronological and thermochronological data from an ignimbrite in the Marifil Volcanic Complex, finding that the age of eruption and deposition is better explained by the pumice zircon age. Fission track ages reflect a post-depositional process probably related to diagenetic mineral changes.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Hartwig E. Frimmel, Rajarshi Chakravarti, Miguel A. S. Basei
Summary: New age and isotope data from detrital zircon grains in quartz-pebble conglomerates in the Singhbhum Craton provide insights into zircon provenance and sediment deposition. This research has important implications for the discovery of gold and uranium deposits in the region.
MINERALIUM DEPOSITA
(2022)
Article
Geochemistry & Geophysics
Jose Julian Esteban, Julia Cuevas, Jose Maria Tubia
Summary: Based on LA-ICP-MS U-Pb zircon ages, this study discusses the geochronology and provenance of the Guadaiza nappe in Betic Cordilleras, Spain. The nappe consists of Triassic marbles and metapelitic sequence. Zircon analysis suggests the Triassic age for the marbles and reveals different age clusters for the metapelitic sequence, indicating a provenance from the triangle region between the West African Craton, the Metasaharan Craton, and the Hun Superterrane.
Article
Geosciences, Multidisciplinary
Fabricio A. Caxito, Leo Afraneo Hartmann, Monica Heilbron, Antonio Carlos Pedrosa-Soares, Henrique Bruno, Miguel A. S. Basei, Farid Chemale
Summary: By analyzing data from various fields, it has been concluded that the South Atlantic Brasiliano Orogenic System went through a Wilson cycle involving different stages such as rift, drift, subduction, collision, and collapse. The evidence from petrographic, isotopic, and geophysical data reveals the complex evolution of the South Atlantic Brasiliano Orogenic System with distinct components of the Wilson cycle.
PRECAMBRIAN RESEARCH
(2022)
Article
Archaeology
Javier Rodriguez, Alejandro G. Sinner, David Martinez-Chico, Jose Francisco Santos Zalduegui
Summary: This article presents a matching algorithm for lead isotope analyses that can quickly identify potential sources of metal. Using the archaeological site of Fuente Spitz in Spain as a case study, the potential ore sources for 29 Roman lead artifacts are provided. In addition, the accuracy and reliability of traditional lead isotope analyses are reevaluated by reanalyzing samples from nearby mining districts. The study also reveals the existence of foundries and smelting sites that produced lead products and ingots using galena ores from different mining districts, supplying them throughout Europe.
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2023)