Journal of South American Earth Sciences最新文献

{"title":"The role of mantle–crustal sources in the genesis of the San Feliciano Plutonic System (SFPS), Concepcion del Oro, Zacatecas (Cretaceous): Insights from Geochemistry, Sm–Nd isotopes, and U–Pb geochronology","authors":"Erik Emmanuel M. Torres ,&nbsp;Sanjeet K. Verma ,&nbsp;Eduardo G. Partida ,&nbsp;Elson P. Oliveira ,&nbsp;Macario R. Rocha ,&nbsp;Hector Hernández-Mendoza","doi":"10.1016/j.jsames.2025.105698","DOIUrl":"10.1016/j.jsames.2025.105698","url":null,"abstract":"<div><div>The San Feliciano Plutonic System (SFPS) is located south of Concepcion del Oro, Zacatecas, Mexico, and is emplaced within a Mesozoic marine sedimentary sequence as part of the Concepcion del Oro Intrusive Belt (COIB). This region is historically recognized for its abundant mineral resources, including gold (Au), silver (Ag), lead (Pb), zinc (Zn), and copper (Cu). The mineralogical assemblage of the SFPS consists of moderately altered phenocrysts of plagioclase and potassium feldspar, with lesser amounts of quartz. Hornblende is present in moderate quantities, accompanied by clinopyroxene, apatite, biotite, and magnetite. The presence of secondary minerals such as calcite, sericite, quartz, secondary feldspar, pyrite and oxides reflect varying degrees of hydrothermal alteration. The SFPS exhibits an intermediate composition (SiO_2(adj) = 52.39–66.37 wt%), ranging from monzonite/quartz monzonite to diorite and syenite, which is consistent with an I-type granitoid signature. Chondrite-normalized Rare Earth Element (REE) patterns reveal enrichment in Light Rare Earth Elements (LREE) relative to Heavy Rare Earth Elements (HREE). Geochemical data suggest that the magma originated from partial melting, followed by fractional crystallization and assimilation during its evolution, before being emplaced into the middle to upper continental crust. Whole-rock isotopic data indicates that the magma originated from partial melting of a depleted mantle source, accompanied by interaction with continental crust. This interpretation is supported by εNd values ranging from +2.0 to +3.6 and model ages around 0.5 Ga at t = 74.3 Ma (average age). U–Pb geochronology constrains the crystallization age of the plutonic system to between 83.49 ± 3.25 Ma and 69.31 ± 2.30 Ma, placing the SFPS in the Late Cretaceous (Santonian-Campanian). The tectonic model suggests that the magma was generated in a continental volcanic arc setting, associated with syn-tectonic magmatism during active crustal deformation. Additionally, there is also evidence of pre-magmatic activity on the western side of the COIB, contemporaneous with magmatism on the eastern side. This tectonomagmatic evolution is linked to the subduction of the Farallon Plate beneath the North American Plate from the Late Cretaceous to the Paleogene, during the development of the Cretaceous–Eocene Mexican Magmatic Arc (CEMMA).</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105698"},"PeriodicalIF":1.5,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The brachiopod faunas from the Huaraco Formation (Andacollo Embayment): the transition of warm to cold sea currents along southwestern Gondwana","authors":"Cristian Adrián Pardo ,&nbsp;Arturo César Taboada ,&nbsp;María Alejandra Pagani ,&nbsp;Carlos Oscar Limarino","doi":"10.1016/j.jsames.2025.105695","DOIUrl":"10.1016/j.jsames.2025.105695","url":null,"abstract":"<div><div>We present the first systematic descriptions of the brachiopod faunas from the Huaraco Formation in Andacollo, Neuquén Province, Argentina. This study analyzes two fossil-bearing horizons and briefly describes their sedimentary paleoenvironment. Additionally, a stratigraphic analysis was performed to determine the correct position of the fossil-bearing horizons in the stratigraphic column. The first fossil-bearing horizon crops out in the Cerro San Pedro, where the identified taxa are: <em>Linipalus andacolloensis</em> sp. nov., <em>Neochonetes</em> (<em>Neochonetes</em>) <em>granulifer</em> (Owen, 1852), <em>Gonzalezius naranjoensis</em> Taboada, 2004, <em>Linispinus</em> cf. <em>L. crassus</em> Lazarev, 2008 and <em>Leiorhynchus</em> sp. The second fossil-bearing horizon crops out at Cerro Minas, with the identified taxa being: <em>Tivertonia jachalensis</em> (Amos, 1960), <em>Lanipustula patagoniensis</em> Simanauskas, 1996, and <em>Rhynchopora</em> sp. These faunas, restricted to the Andacollo Embayment, allow us to establish new biostratigraphic units, the <em>Linipalus-Neochonetes</em> and <em>Tivertonia-Lanipustula</em> biozones, respectively. The first biozone is included in the <em>Marginovatia-Maemia</em> Chronozone, recognized in central-western Argentina, with an earliest late Bashkirian age. This, in turn, could indicate the southernmost extent reached by the warm sea currents of the First Pennsylvanian Transgression. On the other hand, the <em>Tivertonia-Lanipustula</em> Biozone, which characterizes the fauna of the second fossil-bearing horizon, has a Moscovian age. The co-occurrence of <em>T. jachalensis</em> and <em>L. patagoniensis</em> indicates that the cold sea currents displaced to the north reached the Andacollo Embayment, located approximately 60°S. The faunistic succession of brachiopods from the Andacollo Embayment enriches our understanding of the paleobiogeographic scenario of the southwestern margin of Gondwana, highlighting a transition between warm to cold sea currents.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105695"},"PeriodicalIF":1.5,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144772937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geochemical and structural segmentation inside the Laguna del Maule hydrothermal system","authors":"Joaquin Llano ,&nbsp;Nicolás Vigide","doi":"10.1016/j.jsames.2025.105697","DOIUrl":"10.1016/j.jsames.2025.105697","url":null,"abstract":"<div><div>The Laguna del Maule Volcanic Complex is one of the most studied active volcanic systems in the South American Andean range, but hardly any investigations have combined geochemical fluids with the structural arrangement. Therefore, we discuss the relationship between thermal waters and the structural characteristics in this volcanic system, in order to provide a new approach on the understanding of the hydrothermal system in the area. We carried out a geochemical analysis of thermal manifestations, focusing on Cajón Grande and Guanaco hot springs on the Argentine sector of this volcanic Complex, to compare our results with the ones already published in the literature on Chilean territory. The integration of the physicochemical analyses, isotopic compositions, and a morphostructural analysis allow us to identify a possible reservoir segmentation that we consider to be associated with a relative temporal evolution between these thermal manifestations. Here, we recognized a previous stage controlled by the volcanism of Cerro Campanario that influences Cajón Grande and Guanaco thermal emissions. Whereas, a current stage related to the actual active magmatism determines the composition of the other water manifestations. Therefore, our findings contribute to the understanding of the Laguna del Maule Hydrothermal System, and shed light on the role of structures associated with fluid circulation.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105697"},"PeriodicalIF":1.7,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil carbon dioxide diffuse emission during a volcano-tectonic seismic Swarm at Laguna del Maule volcanic field","authors":"M.C. Lamberti ,&nbsp;N. Nuñez ,&nbsp;G. Velasquez Vargas ,&nbsp;G. Pedreros Delgado ,&nbsp;J. Llano ,&nbsp;A. Massenzio ,&nbsp;C. Bucarey Parra ,&nbsp;G. Viti ,&nbsp;M. Agusto","doi":"10.1016/j.jsames.2025.105689","DOIUrl":"10.1016/j.jsames.2025.105689","url":null,"abstract":"<div><div>The Laguna del Maule volcanic field is an Andean system characterized by extraordinary postglacial rhyolitic volcanism and one of the highest rates of surface uplift globally. Following a sustained increase in seismic activity in April 2023, the volcanic monitoring observatories in Chile and Argentina raised the technical alert level of the Laguna del Maule volcanic field from green, its baseline activity level, to yellow. At the peak of the seismic crisis, we conducted a diffuse CO₂ flux survey at Las Nieblas fluid discharge zone, located in the Cajón Troncoso. In addition to CO₂ flux measurements, we performed gas composition analyses using a Multigas device at Las Nieblas and collected soil gas samples for carbon isotopic analysis at two fluid discharge zones: Las Nieblas and Cajón Grande. Our survey revealed that Las Nieblas emits CO₂ exclusively through cold soils, with fluxes exceeding 4500 g m⁻² d⁻¹. Statistical analysis of the flux data indicates a dual origin for the CO₂, with a larger proportion derived from an endogenous source. Carbon isotopic analysis further supports a magmatic origin for CO₂. Based on our results, the magmatic CO₂ output at Las Nieblas is estimated at 37 t d⁻¹, representing a minimum emission rate for the site. Additionally, the diffuse degassing structure mapped at Las Nieblas shows a strong linkage with the Troncoso Fault. At Cajón Grande, the carbon isotopic composition suggests an organic source for CO₂, with only a minor magmatic contribution. Overall, this preliminary study reinforces the hypothesis of a sill intrusion beneath Laguna del Maule volcanic field and suggests that the CO₂ released at Las Nieblas may be directly sourced from this silicic intrusion and emitted via the Troncoso Fault.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105689"},"PeriodicalIF":1.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of irrigation suitability of groundwater from the semi-arid Oriental Basin in eastern-central Mexico","authors":"Priyadarsi D. Roy ,&nbsp;Sekar Selvam ,&nbsp;Oscar Agesandro García-Arriola ,&nbsp;José Luis Sánchez-Zavala ,&nbsp;Irma Gabriela Vargas-Martínez ,&nbsp;Logesh Natarajan","doi":"10.1016/j.jsames.2025.105696","DOIUrl":"10.1016/j.jsames.2025.105696","url":null,"abstract":"<div><div>Water from the deficit Libres-Oriental aquifer is used for irrigating agricultural fields in the semi-arid Oriental Basin of eastern-central Mexico. Its chemistry (Ca–Mg–HCO₃) is influenced by ion exchange and silicate weathering of the volcaniclastic lithologies and dissolution of karstic rocks. Multiple approaches such as the US Regional Salinity Laboratory (USSL) categorization, Donnen classification and Wilcox diagram as well as estimation of the irrigation water quality index (IWQI) were used to evaluate its irrigation suitability by collecting samples from different wells within the basin. Water from about 60 % of the sampled wells, showing high and very-high salinity hazards, remained unsuitable in the USSL categorization. It should be avoided for irrigating salt sensitive plant, and soil in the irrigated fields might also need permeability enhancement. Computed IWQI values were mostly congruent, and they demarcated the wells at western and southern parts of the basin as suitable (low restriction) for irrigation.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105696"},"PeriodicalIF":1.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Concentration of Black Carbon (BCe) in snow, glacier ice, and glacier water from high mountains in central Mexico and central Andes (Peru and Bolivia)","authors":"Guillermo Ontiveros-Gonzalez′ ,&nbsp;Alejandro Carrillo-Chavez ,&nbsp;Luzmila Davila-Roller ,&nbsp;Carolina Muñoz-Torres ,&nbsp;Daniela Kristell Calvo-Ramos ,&nbsp;Rocio Garcia-Martinez ,&nbsp;Luisa Fernanda Rueda-Garzon","doi":"10.1016/j.jsames.2025.105668","DOIUrl":"10.1016/j.jsames.2025.105668","url":null,"abstract":"<div><div>We measure the total optical radiative effect of the sediments (light-absorbing particles) present in surface snow (30 cm), glacier ice, and water samples collected at several high mountains: Iztaccíhuatl and Citlaltépetl in central Mexico; Vallunaraju in Cordillera Blanca, Peru; Condoriri, Huayna Potosi, and Ilimani in Cordillera Real, Bolivia, using a light-absorbing method. This method consists of shining a controlled amount of light on a filter that contains the sediments (light-absorbing particles) from the samples. Different types of light-absorbing particles (LAPs) darken snow surfaces, enhancing snowmelt on glaciers and snowfields. LAPs are often a mixture of biotic and abiotic components at the snow surface, yet methods to separate their respective abundance and albedo-reducing effects are lacking. As more sediments are present on the filter, a more significant amount of light is absorbed. It is important to note that this method does not directly measure the content of black carbon (BC) but, in general, of light-absorbing particles (LAP) without distinguishing between them, and it quantifies the content as equivalent to black carbon (BCe). For all the locations, the snow samples present an average of 1400 ng/g BCe; for the water samples, 1100 ng/g BCe; and for the ice samples, 450 ng/g BCe. For all the samples, a minimum of 12 ng/g BCe and a maximum of 2678 ng/g BCe, corresponding to Vallunaraju (Peru) and Iztaccíhuatl (México), respectively, were measured. Finally, we used the NOAA HYSPLIT Model to trace the possible' backward trajectories at the three localities. The concentrations measured in this BCe work are comparable to those reported in other parts of the world.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105668"},"PeriodicalIF":1.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Natural and artificial radionuclides in rocks and soils of the Galápagos Islands","authors":"Severina Zita Irsigler ,&nbsp;Martin Hubert Gerzabek ,&nbsp;Christopher Lüthgens ,&nbsp;Franz Zehetner","doi":"10.1016/j.jsames.2025.105693","DOIUrl":"10.1016/j.jsames.2025.105693","url":null,"abstract":"<div><div>For the first time on the Galápagos Islands, we conducted a systematic study of the levels of natural and anthropogenic radionuclides in lava and soils. We used newly collected lava samples as well as soil samples from previous studies, including a soil chronosequence with soil ages up to 1070 ka and an elevation sequence covering an arid-to-humid climate gradient.</div><div>The levels of most natural radionuclides were higher in the topsoils than in the lava samples, probably due to residual accumulation during weathering, with concentrations increasing from young to old soils. Concentrations of ⁴⁰K showed an opposite trend, likely due to its high mobility after release from primary minerals through weathering processes. The inventories of ¹³⁷Cs (36.9–380 Bq m⁻²) and ²¹⁰Pb_ex (573–7764 Bq m⁻²) correlated significantly, with rainfall being an influencing factor. Comparison of the ¹³⁷Cs inventories in the studied soils with those found across South America shows a similar range as reported for the area between 3° northern and 10° southern latitude in Brazil.</div><div>Overall, the levels of natural and anthropogenic radionuclides in the soils of the Galápagos Islands are rather low compared to other regions of the world. An elevated contribution to the population radiation dose is not to be expected.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105693"},"PeriodicalIF":1.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling debris flood propagation in scarce data terrain, case study in the Colombian Andes","authors":"Federico Gómez Cardona ,&nbsp;Edier Aristizábal Giraldo ,&nbsp;Martin Mergili","doi":"10.1016/j.jsames.2025.105660","DOIUrl":"10.1016/j.jsames.2025.105660","url":null,"abstract":"<div><div>Debris floods are hazardous phenomena with long travel distances and high velocities and impact forces. They are common in steep channels and characterized by sediment concentrations that range from 20% to 50% and peak discharges comparable to flooding. Several of the affected watersheds lack relevant data, making robust hazard and risk analysis hard to implement. Added to high vulnerability and low capacity and funding for a successful risk management from government and institutions, this leads to deadly disasters. In this study, three different models are compared from three of the main approaches to the simulation: empirical, hydraulic and mass-routing. Flow-R, Iber and r.avaflow are employed on the simulation of a debris flood that took place in Salgar (Colombia) in 2015, where 112 landslides were triggered by the unusual occurrence of two rainstorms. The subsequent debris flood killed more than 100 people and the cost of reconstruction was over USD 12 million. All models provide conservative results and good recall (&gt;65%) as compared with observed impacted area. Flow-R parameters are tuned to local conditions and provide a good, conservative yet probabilistic spatial prediction. Iber adjusts best to the particular case with mean velocities from 2 to 4 <span><math><mrow><mi>m</mi><msup><mrow><mi>s</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math></span> and depths around 2 m, while r.avaflow shows highly conservative results with mean velocities from 2 to 10 <span><math><mrow><mi>m</mi><msup><mrow><mi>s</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math></span> and depths varying from 1 to 7 m and can suit better a long-term risk analysis.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105660"},"PeriodicalIF":1.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mapping groundwater contamination risk in a periurban watershed in northeast Brazil","authors":"Matheus Natan Ferreira Alves de Sousa,&nbsp;Caio Victor Macêdo Pereira,&nbsp;Bárbara Hillary de Almeida Pinto,&nbsp;Diego Allysson Gomes Araujo,&nbsp;Pedro Júlio Castro dos Santos,&nbsp;Gabriel Dalla Rosa Carvalho,&nbsp;José Arthur do Nascimento Ramalho,&nbsp;Júlia Mairla Santos Herculano,&nbsp;Nixdali Freire de Oliveira,&nbsp;Francisca Luciana Bevenuto Gonzaga,&nbsp;Raíssa Cássia Andrade de Souza,&nbsp;Erizangela de Abreu Barbosa,&nbsp;Glinton Braga Praxedes,&nbsp;Rafael Alves de Medeiros,&nbsp;Aline Maria Fernandes Galdino da Silva,&nbsp;Raoni Lopes de Araújo Nogueira de Souza,&nbsp;Vera Lúcia Lopes de Castro,&nbsp;Carlos Wilmer Costa","doi":"10.1016/j.jsames.2025.105687","DOIUrl":"10.1016/j.jsames.2025.105687","url":null,"abstract":"<div><div>Groundwater is the most readily available source of fresh water worldwide and plays a crucial role in different human activities, but faces increasing threats due to overexploitation, contamination and effects of climate change. In Brazilian cities such as Natal, capital of Rio Grande do Norte state (RN), the growing demand for this resource in response to rapid urban growth and increasing water supply needs highlights the importance of integrated management and pollution control strategies. This study adopted an integrated approach within a Geographic Information System (GIS) environment, using primary and secondary spatial data, and applied Multi-Criteria Decision Analysis (MCDA) to assess the intrinsic vulnerability and contamination risk of aquifers in the Doce River Basin (DRB), in the metropolitan area of Natal (RN). The methodology involved assigning weights and scores to natural attributes, well density and land use and land cover. The analysis considered the potential risk of contamination by any type of contaminating agent, including nutrients, organic compounds, and other anthropogenic pollutants commonly associated with urban land use. The results revealed moderate to high vulnerability and contamination risk in over 90 and 80 % of the DRB, respectively. Low average rainfall, sandy soils, and shallow or highly permeable aquifers, combined with intensive human activities significantly exacerbate the risk of groundwater degradation. Urban areas on sedimentary terrain and unconfined, porous and fractured aquifers are particularly critical.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105687"},"PeriodicalIF":1.7,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144716167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Open minds, open -slab- windows","authors":"Federico M. Dávila ,&nbsp;Melisa Rodriguez ,&nbsp;Juan M. Dagert ,&nbsp;Gastón Pennacchio ,&nbsp;Adeline Clutier ,&nbsp;Pilar Ávila ,&nbsp;Federico Martina ,&nbsp;Miguel Ezpeleta ,&nbsp;Claudia M. Herrera","doi":"10.1016/j.jsames.2025.105690","DOIUrl":"10.1016/j.jsames.2025.105690","url":null,"abstract":"<div><div>In this contribution, we trace the development of knowledge on the Patagonian slab window, from early 20th-century observations and mapping to the transformative impact of plate tectonics and, in particular, the foundational work of Dr. Victor A. Ramos. His contributions paved the way for more sophisticated research in the 21st century, integrating advanced geochemical, geophysical, and numerical techniques that have significantly enhanced our understanding of this geodynamic feature along the southernmost margin of South America. Despite substantial progress, many questions remain. Here, we review the topic, emphasising Dr. Ramos's contributions and examining how past insights continue to shape current perspectives on slab window formation. Finally, we outline key unresolved issues, highlighting opportunities for future research.</div></div>","PeriodicalId":50047,"journal":{"name":"Journal of South American Earth Sciences","volume":"165 ","pages":"Article 105690"},"PeriodicalIF":1.7,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}