Earth-Science Reviews最新文献

{"title":"Coupling relationship of the Mississippi Valley-type zinc‑lead deposit and hydrothermal dolostone: Its role in metallogeny","authors":"Aiying Wei , Yiwen Ju , Yingchao Liu , Shuya Zhang , Huaikun Ma , Honglin Zhou , Dong Pan , Chuandong Xue","doi":"10.1016/j.earscirev.2025.105066","DOIUrl":"10.1016/j.earscirev.2025.105066","url":null,"abstract":"<div><div>The deposition, diagenesis, and subsequent evolution of dolostones are vital geological processes in basin sedimentary history, recording processes of evaporite formation, the Mississippi Valley–type (MVT) zinc–lead (Zn–Pb) deposit, and hydrocarbon accumulation. This review provides a comprehensive investigation and discussion on the tectonic framework of the MVT Zn–Pb deposits, the processes of dolostone formation, the spatiotemporal relationships between hydrothermal dolostone and MVT Zn–Pb deposits, and potential fluid migration mechanisms. These findings elucidate the coupling relationship between host dolostone and MVT Zn–Pb deposits, ultimately leading to the establishment of a metallogenic model.</div><div>In the Earth's geological system, nearly all basins or platforms bearing the MVT Zn–Pb deposits have undergone a sequence of distinct geological processes across different burial environments. These include the coexistence of penecontemporaneous dolostone and evaporites in the near-surface, shallow burial setting; the formation of burial dolostone and oil or gas reservoirs in deeper burial environment; and the development of hydrothermal dolostone and MVT Zn–Pb deposits in tectonic uplift setting.</div><div>The Zn–Pb ore-bearing dolostone originates from the interaction of carbonate rocks with hydrothermal fluids, as evidenced by the development of mineralised alteration zones at both the orebody and mineral scales. Orebodies are typically associated with columnar or tabular bodies of hydrothermal dolostone, or a mixture of both, or intersect the tabular body of the hydrothermal dolostone. Sulphides precipitation was likely to have occurred during the transition of dolomite from the replacement to saddle form. During the metallogenic stage, elevated fluid temperatures and high ion concentrations facilitate hydrothermal dolomitisation and thermochemical sulphate reduction processes, which were the primary factor controlling the spatiotemporal coexistence of dolostone and MVT Zn–Pb deposits. The lattice structure and chemical composition of hydrothermal dolomite can provide valuable insights into the sources of material, fluid migration pathways, and the transport mechanisms of reduced sulphur within related basins. Globally, in-situ thermochemical sulphate reduction is recognized as the dominant pathway for reduced sulphur generation in typical MVT Zn–Pb deposits.</div><div>The cogenetic model of MVT Zn–Pb deposits and dolostone formation can be divided into three distinct stages. In this model, the the first stage is thought to potentially generate abundant sulphur sources for the third stage, while the second stage provides rich reducing agents necessary for subsequent mineralisation. The coupling relationship between MVT Zn–Pb deposit and dolostone is primarily governed by the complex interactions of diverse fluids within the ore-bearing basins. This refined model not only enhances our understanding of the mineralisation proc","PeriodicalId":11483,"journal":{"name":"Earth-Science Reviews","volume":"264 ","pages":"Article 105066"},"PeriodicalIF":10.8,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-episode metamorphism and magmatism in the Paleozoic Altyn Orogen, West China: Implications for the tectonic evolution of the Proto-Tethys Ocean","authors":"Jie Dong , Chunjing Wei","doi":"10.1016/j.earscirev.2025.105067","DOIUrl":"10.1016/j.earscirev.2025.105067","url":null,"abstract":"<div><div>The Proto-Tethys Ocean plays a significant role in the processes of supercontinent breakup-assembling and Eurasia's formation history. The Paleozoic Altyn Orogen marks the northern boundary of the Proto-Tethys Ocean realm and holds the deepest records of continental subduction, but the detailed tectonic evolution of this orogen remains controversial. We present a systematic overview of recent studies of metamorphism and granitoid magmatism within the Paleozoic Altyn Orogen. This Orogen includes the North Altyn Tectonic Belt (NAB), Central Altyn Block (CAB) and South Altyn Tectonic Domain (SAD), in which four-episode metamorphism (M-I to -IV) and five-episode granitoid magmatism (G1–5) are recognized. The M-I metamorphism is marked by high-pressure and low-temperature (HP-LT) eclogites with ages of >522 Ma in the NAB, which, together with the arc-related G1 granitoids of 536–510 Ma, indicates an early Cambrian cold subduction. The M-II metamorphism is characterized by ultrahigh-pressure (UHP) rocks in the SAD. It shares clockwise <em>P–T</em> paths characterized by the prograde to the <em>P</em><sub>max</sub> (peak pressure) (M-IIa) stage at ∼500 Ma and post-<em>P</em><sub>max</sub> decompression to high amphibolite facies or HP-(U)HT (ultrahigh- to high-temperature) granulite facies conditions (M-IIb) at ∼480 Ma. The <em>P</em><sub>max</sub> conditions of M-IIa vary from the stability field of quartz to that of coesite and stishovite, registering continental subduction to different mantle depths with the maximum up to 300 km. The M-IIa metamorphism was accompanied by the G2 adakitic granitoids with ages of 510–500 Ma, and M-IIb metamorphism was associated with the G2 A-type granitoids aged 495–480 Ma, related to the subduction and exhumation of a microcontinent. The M-III metamorphism is represented by LP-(U)HT granulites with ages of 462–441 Ma and LP overprinting on the exhumed HP-UHP rocks in the SAD. This LP metamorphism, associated with the G3 I/A-type granitoids (475–450 Ma), may indicate an arc/backarc extension. The M-IV metamorphism occurred in the SAD involves an earlier HP eclogite stage at ∼430 Ma (M-IVa) and a later granulite facies overprinting stage at ∼400 Ma (M-IVb). The M-IVa, together with the G4 adakitic granitoids (450–420 Ma), suggests closing of the backarc basins with crustal thickening. While the M-IVb, along with the G5 A-type granitoids (420–370 Ma), indicates the post-collision extension. Summarizing the regional metamorphism, granitoid magmatism and other geological data, we propose an alternative model to address tectonic evolution of the Altyn Orogen. It involves: (i) the early subduction of the Proto-Tethys Ocean (>522–510 Ma), (ii) subsequent micro-continental subduction and exhumation (510–480 Ma), (iii) late oceanic subduction and arc-backarc extension (475–450 Ma), (iv) closing of the backarc basin and continental subduction-collision (450–420 Ma) in response to the final closure of the Proto-Te","PeriodicalId":11483,"journal":{"name":"Earth-Science Reviews","volume":"262 ","pages":"Article 105067"},"PeriodicalIF":10.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An overview of observed changes in precipitation totals and extremes over global land, with a focus on Africa","authors":"Tewodros Addisu Yate ,&nbsp;Guoyu Ren","doi":"10.1016/j.earscirev.2025.105063","DOIUrl":"10.1016/j.earscirev.2025.105063","url":null,"abstract":"<div><div>Precipitation is one of the crucial climatic variables that has significant impact on the natural and human systems, with several important sectors of the Earth's system responding to its spatiotemporal variability. Consequently, various studies are conducted on global and regional scales to evaluate changes and trends in precipitation, with more emphasis on extremes. This review assesses existing studies on precipitation trends conducted using <em>in situ</em> data or gauge-based datasets, examining their comparability and consistency to identify regional trends. It also seeks to demonstrate the pressing challenges related to the availability and accessibility of precipitation data, with a particular focus on Africa. The existing gauge-based global and regional studies are limited and generally diverse, making it difficult to infer robust regional trends from their findings. Complex differences are observed in data periods, analysis region, methods, precipitation metrics, and the type of datasets used. This review notes that there is uneven station distribution in each continent, and that this is also mirrored in the existing global datasets, while Africa constitutes one of the least covered global regions. Yet, a few studies agree that long-term precipitation totals exhibit non-significant decreasing trends over northern Africa and significantly decreasing trends in parts of western Africa. Conversely, long-term annual precipitation totals have increased significantly over Asia, northern and central Europe, southern Canada and the eastern United States. Generally, despite accounting for different analysis periods, total and extreme trends match up for most global regions. Areas with significant increasing extreme trends, such as RX1day, RX5day and R95pTOT indices, include South Africa, eastern Asia, Canada, northern and central Europe, northeastern United States, and western Australia. Overall, more efforts are needed to significantly expand station coverage across Africa and ease restrictions to allow greater access to data. Initiatives to establish and monitor climate stations across Africa need to be supported. Regional studies that use <em>in situ</em> or gauge-based datasets need to increase and employ comparable analysis regions and data periods, as well as assess and adjust for systematic biases in precipitation data at urban stations.</div></div>","PeriodicalId":11483,"journal":{"name":"Earth-Science Reviews","volume":"262 ","pages":"Article 105063"},"PeriodicalIF":10.8,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influences of paleoclimatic changes on organic matter enrichment mechanisms in freshwater and saline lacustrine oil shales in China: A machine learning approach","authors":"Man Lu ,&nbsp;Guoqiang Duan ,&nbsp;Tongxi Zhang ,&nbsp;Naihao Liu ,&nbsp;Yuxuan Song ,&nbsp;Zezhou Zhang ,&nbsp;Jinqi Qiao ,&nbsp;Zhaoyang Wang ,&nbsp;Zilong Fang ,&nbsp;Qingyong Luo","doi":"10.1016/j.earscirev.2025.105061","DOIUrl":"10.1016/j.earscirev.2025.105061","url":null,"abstract":"<div><div>Lacustrine oil shales are valuable unconventional resources, with their organic matter (OM) enrichment closely linked to paleoclimatic conditions. However, the mechanisms controlling OM enrichment in freshwater and saline lacustrine environments remain underexplored. This study represents the first application of the random forest (RF) classifier to investigate how paleoclimatic changes influence OM enrichment mechanisms in lacustrine oil shales in China. By analyzing the bulk geochemical (total organic carbon (TOC), trace and major elements) and molecular biomarker data from seven representative lacustrine oil shales, we demonstrate that the RF classifier can effectively discriminate between freshwater and saline lacustrine oil shales. The results indicate that the TOC content is the most significant parameter, with freshwater shales having higher TOC values than their saline counterparts. Further analyses suggest that OM enrichment in these two types of lacustrine settings was driven by a combination of factors, including paleoproductivity, paleowater conditions, and terrigenous inputs, all modulated by paleoclimatic changes. Freshwater lacustrine shales were generally deposited during humid and warm periods with higher atmospheric CO₂ levels and greater precipitation, which led to higher paleoproductivity, reduced terrigenous influx, rising lake levels, and improved OM production and preservation. In contrast, saline lacustrine shales were deposited during dry and cold periods, when increased water salinity and diminished paleoproductivity resulted in lower OM production, reduced preservation, and decreased TOC content. These findings provide key insights into the role of paleoclimate in shaping OM-rich lacustrine shales and establish a framework for evaluating organic-rich shale deposits. The study also underscores the potential for future geochemical datasets to enhance classification models and broaden applications of machine learning in the exploration of hydrocarbon resources.</div></div>","PeriodicalId":11483,"journal":{"name":"Earth-Science Reviews","volume":"262 ","pages":"Article 105061"},"PeriodicalIF":10.8,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wildfire Fuels Mapping through Artificial Intelligence-based Methods: A Review","authors":"Riyaaz Uddien Shaik ,&nbsp;Mohamad Alipour ,&nbsp;Kasra Shamsaei ,&nbsp;Eric Rowell ,&nbsp;Bharathan Balaji ,&nbsp;Adam Watts ,&nbsp;Branko Kosovic ,&nbsp;Hamed Ebrahimian ,&nbsp;Ertugrul Taciroglu","doi":"10.1016/j.earscirev.2025.105064","DOIUrl":"10.1016/j.earscirev.2025.105064","url":null,"abstract":"<div><div>Understanding fire behavior is a crucial step in wildfire risk assessment and management. Accurate and near real-time knowledge of the spatio-temporal characteristics of fuels is critical for analyzing pre-fire risk mitigation and managing active-fire emergency response. Geospatial modeling and land cover mapping using remote sensing combined with artificial intelligence techniques can provide fuel information at regional scales with high accuracy and resolution, as evidenced by the extensive recent work in the literature that appeared with increasing volume in the open literature. This paper provides a comprehensive survey of the state-of-the-art in wildfire fuel mapping, focusing on the research frontier of fire fuel models, fuel mapping methods, remote sensing data sources, existing datasets/reference maps, and applicable artificial intelligence techniques. The main findings highlight the increasing research on fire fuel mapping worldwide, with a considerable emphasis on multispectral imagery and the Random Forest classifier for its efficacy with limited data. The majority of these studies concentrate on relatively limited geographical scales spanning a small variety of fuel types, thus leaving a gap in regional and national-scale mapping. Further, this review focuses on identifying the major challenges in wildfire fuel mapping and viable solutions as they relate to (i) ground truth data scarcity, (ii) mapping understory vegetation, (iii) temporal latency, and (iv) lack of uncertainty-aware models. Lastly, this paper identifies potential AI-driven solutions that promise a significant leap in fuel mapping and discusses the latest developments and potential future trends in AI-based fuel mapping applications.</div></div>","PeriodicalId":11483,"journal":{"name":"Earth-Science Reviews","volume":"262 ","pages":"Article 105064"},"PeriodicalIF":10.8,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Key patterns in exceptional fossil preservation since the rise of metazoans","authors":"Filipe G. Varejão ,&nbsp;Rodrigo I. Cerri ,&nbsp;Lucas V. Warren ,&nbsp;Mariza G. Rodrigues ,&nbsp;Stephen J. Puetz ,&nbsp;Paloma P. de Lorenso ,&nbsp;Marcello G. Simões","doi":"10.1016/j.earscirev.2025.105065","DOIUrl":"10.1016/j.earscirev.2025.105065","url":null,"abstract":"<div><div>A comprehensive compilation of Konservat-Lagerstätten reveals their organization into two major environmental and preservation cycles since the dawn of the metazoan fossil record. The Ediacaran–Carboniferous interval is marked by the predominant preservation of arthropods, worms, and shelly invertebrates, typically found compressed, pyritized, or phosphatized within siliciclastic-dominated marine deposits. In contrast, the Permian–Quaternary interval is marked by the preservation of arthropods, shelly invertebrates, vertebrates, and plants, primarily as impressions and compressions in siliciclastic non-marine deposits. Distinct, short-lived intervals (lasting millions of years) with unique preservation patterns occur during transitions. These cycles are strongly influenced by global sea level changes and transgressions over intracontinental areas, significantly affecting environmental and depositional parameters. Conversely, the evolution of clades and mass extinction events appear to have minimal direct influence on the formation of conservation deposits. Challenging the common belief that microbial mats became rare and irrelevant to fossil preservation after the Ediacaran, our data indicate specific periods where these biosedimentary structures played a crucial role in the formation of conservation deposits. Finally, the database was tested for sampling bias, and the weighted data showed minimal deviation from the unbiased data, reinforcing the reliability of the analyses.</div></div>","PeriodicalId":11483,"journal":{"name":"Earth-Science Reviews","volume":"262 ","pages":"Article 105065"},"PeriodicalIF":10.8,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Archean inheritance in Paleoproterozoic orogens: Example of the Southeastern Churchill Province, Trans-Hudson Orogen, Canada","authors":"Antoine Godet ,&nbsp;Isabelle Lafrance","doi":"10.1016/j.earscirev.2025.105060","DOIUrl":"10.1016/j.earscirev.2025.105060","url":null,"abstract":"<div><div>Deciphering the genesis and evolution of crustal lithotectonic blocks and defining the nature of their boundaries are prerequisites for assessing the nature and duration of crustal assembly processes through time and identifying new ore systems. However, ancient small-scale crustal masses and peripheral areas of large cratons have often been involved in subsequent orogenic cycles, heavily reworking and partially overprinting primary geological records, and hindering straightforward tectonic reconstruction. In this study, we present a new comprehensive summary of the geochronological record of the Southeastern Churchill Province (SECP), Trans-Hudson Orogen, Québec, Canada. New time-space diagrams and distribution maps of the Archean to Paleoproterozoic bedrock units form the foundation of our understanding of the tectonic history and cratonization processes in this region. The SECP records an Archean evolution from c. 2920–2735 Ma TTG magmatism forming a newly defined nucleus crustal block, the Koksoak Domain; c. 2735–2690 Ma orthopyroxene-TTG and hybrid magmatism at the margins of the latter; c. 2690–2620 Ma tholeiitic to calc-alkaline volcanism, partial melting of basement-rocks, and basin development upon extensional tectonics in its core; and a period of tectonic quiescence until c. 1.9 Ga. The units of the Koksoak Domain feature a similar magmatic evolution, in terms of timing and chemistry, as the Douglas Harbour Domain of the NE Superior Craton and perhaps the basement of the Meta Incognita microcontinent, defining the new Ungava Bay Terrane. The Paleoproterozoic record of the SECP provides evidence for the reactivation of inherited structures at the lithospheric scale, limited strike-slip displacement of Archean blocks, and structural control on endowment. These findings align with the previously proposed model of successive accretion of crustal blocks over approximately 100 million years (c. 1900–1800 Ma). Our work emphasizes the necessity of tracking lithotectonic blocks and their boundaries through time, especially in terranes that have been subjected to multiple orogenic cycles.</div></div>","PeriodicalId":11483,"journal":{"name":"Earth-Science Reviews","volume":"262 ","pages":"Article 105060"},"PeriodicalIF":10.8,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research progress and current application of weak turbulence and turbulence intermittency in stable boundary layers","authors":"Yan Ren ,&nbsp;Hongsheng Zhang ,&nbsp;Xiaoye Zhang ,&nbsp;Xuhui Cai ,&nbsp;Yu Song ,&nbsp;Jiening Liang ,&nbsp;Lei Zhang ,&nbsp;Tong Zhu ,&nbsp;Jianping Huang","doi":"10.1016/j.earscirev.2025.105062","DOIUrl":"10.1016/j.earscirev.2025.105062","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Research on the stable boundary layer is not only a scientific challenge but is also the foundation of studies on the atmospheric environment, weather, and climate change, with significant practical value in social and economic development. Starting from the mutual transitions between weakly and strongly stable boundary layer states, we review the research progress and application of weak turbulent motions and turbulence intermittency. Turbulent intermittency can be driven by internal (the feedback interaction of wind shear and stability) and external factors (sub-mesoscale motions). We clarified the interaction mechanism between the internal and external factors of turbulent intermittency and elucidated how the interaction affects the evolution of stable boundary layer. Given the widespread existence and importance of sub-mesoscale motion, by separating and quantitatively characterizing sub-mesoscale and turbulent motions from the complex flow fields of stable boundary layers, turbulence intermittency can be identified and quantitatively characterized. Accordingly, the typical characteristics of alternating quiescent and bursting periods of turbulence intermittency events can be determined. Notably, during weak turbulence and quiescent periods of turbulence intermittency, the turbulent transport of matter and energy can be affected by sub-mesoscale motions, has been overestimated easily, relevant corrections are necessary. Eliminating the effects of sub-mesoscale motions can improve the similarity relationships of the stable boundary layers. Moreover, non-stationary turbulent transport during bursting periods of turbulence intermittency events will change the general understanding of classical problems. For example, the surface energy closure rate during the bursting periods can even be very close to totally closure. Turbulence intermittency has wide applications. In this study, turbulence intermittency is combined with haze pollution research to propose the concept of the turbulence barrier effect and investigate the physical mechanisms through which turbulence barriers can be strengthened or broken. The turbulence barrier effect significantly affects turbulent transport of matter, such as carbon dioxide and water vapor; thus, it is vital in practical issues, such as early warning for dust storms and dense fog events. However, three key challenges still require further investigation: physical mechanisms of state transitions and mechanisms of vertical structure evolution in stable boundary layers; physical origins, spatial and temporal evolution patterns, and parameterization of turbulence intermittency; and improvement of the similarity theory of stable boundary layers. Finally, we discussed future research directions on weak turbulence and turbulence intermittency in stable boundary layers, and explored the potential applications of observational facts, theoretical breakthroughs, and simulation advances in stable boundary layers to i","PeriodicalId":11483,"journal":{"name":"Earth-Science Reviews","volume":"262 ","pages":"Article 105062"},"PeriodicalIF":10.8,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical properties of gas hydrate-bearing sediments: Research progress, challenges and perspectives","authors":"Yapeng Zhao ,&nbsp;Gaowei Hu ,&nbsp;Lele Liu ,&nbsp;Changling Liu ,&nbsp;Yizhao Wan ,&nbsp;Qingtao Bu ,&nbsp;Yunkai Ji ,&nbsp;Zhun Zhang ,&nbsp;Liang Kong","doi":"10.1016/j.earscirev.2025.105058","DOIUrl":"10.1016/j.earscirev.2025.105058","url":null,"abstract":"<div><div>We provide a comprehensive overview and summarizes the recent advances in the mechanical properties of hydrate-bearing sediments (HBS) from three aspects: experimental investigation, numerical simulation, and constitutive model. Mechanical properties and microscopic mechanisms under the influence of multiple factors are expounded in depth. The results show that hydrate saturation and confining pressure are the most significant factors affecting the mechanical behavior of HBS, and the effects of various factors are different and coupled. The essence of macroscopic mechanical properties is the evolution of microscopic particle relationships. Numerical simulation is an important means to study cross-scale mechanical behavior. The constitutive model is typified by the elastoplastic model based on critical state theory. Further, the challenges facing current research are discussed, and the solutions and development directions are clarified. In the future, the focus should be on the cross-scale unification of micro (atomic and crystal scales), <em>meso</em> (particle scale) to macro (sample and reservoir scales), also including the study of non-homogeneous fracture-filling hydrate. Meanwhile, there is an urgent need to establish unified industry standards and a global database to accelerate academic exchanges and sharing of achievements.</div></div>","PeriodicalId":11483,"journal":{"name":"Earth-Science Reviews","volume":"262 ","pages":"Article 105058"},"PeriodicalIF":10.8,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ice-marginal terrestrial landsystems: Sediment heterogeneity, architecture and hydrogeological implications","authors":"Emmanuelle Arnaud ,&nbsp;Tara Harvey ,&nbsp;Laura Weaver ,&nbsp;Jessica R. Meyer ,&nbsp;Beth L. Parker","doi":"10.1016/j.earscirev.2025.105059","DOIUrl":"10.1016/j.earscirev.2025.105059","url":null,"abstract":"<div><div>Previously glaciated landscapes often present unique challenges for hydrogeological investigations. Specifically, ice-marginal terrestrial landsystems are often difficult to characterize and model considering the dynamic nature of the ice and associated meltwater and sediment gravity flow processes that result in heterogeneous sediment successions and architectures over a range of scales. This paper integrates the many advances in our understanding of glacial geology with a focus on its hydrogeological implications. Ice-marginal terrestrial landsystems can be conceptualized as complex arrangements of glacial conditions that vary as the ice margin stagnates or fluctuates over time. Subglacial, englacial, proglacial, glaciofluvial, glaciolacustrine and gravitational or glacitectonic deformation processes lead to erosional and depositional elements that stack over time to form complex subsurface successions with uncertain lateral variability. The geomorphology and sediments at surface within an area are the last expression of those erosional and depositional elements over time. The nature and architecture of sediment types expected in eight different settings are reviewed and their hydrogeological significance discussed. The evolution of a contaminated site's conceptual model is then used to demonstrate how detailed sedimentological and stratigraphic characterization of glacial successions together with an understanding of ice-marginal landsystems, can lead to a more robust site conceptual model of hydraulic conductivity architecture that can better constrain hydrogeological investigations.</div></div>","PeriodicalId":11483,"journal":{"name":"Earth-Science Reviews","volume":"262 ","pages":"Article 105059"},"PeriodicalIF":10.8,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}