地球科学最新文献

{"title":"Correction: The chemical and Sm–Nd isotopic behaviour of accessory minerals in metasediments along the LP-HT Chugach Metamorphic Complex (Alaska)","authors":"Théo Biget, Emilie Bruand, Inês Pereira, Maud Boyet, Deta Gasser, Kurt Stüwe, Antonio Langone","doi":"10.1007/s00410-025-02261-1","DOIUrl":"10.1007/s00410-025-02261-1","url":null,"abstract":"","PeriodicalId":526,"journal":{"name":"Contributions to Mineralogy and Petrology","volume":"180 10","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00410-025-02261-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"The “Analogs for VENus' GEologically Recent Surfaces” (AVENGERS) Initiative: Using Terrestrial Analogs to Study Recent Volcano-Tectonic Activity on Venus and Inform the Characterization of Terrestrial Exoplanets","authors":"P. D’Incecco,&nbsp;J. Filiberto,&nbsp;J. B. Garvin,&nbsp;G. N. Arney,&nbsp;S. A. Getty,&nbsp;E. Kohler,&nbsp;L. M. Zelenyi,&nbsp;L. V. Zasova,&nbsp;O. I. Korablev,&nbsp;M. A. Ivanov,&nbsp;J. W. Head,&nbsp;D. A. Gorinov,&nbsp;S. Bhattacharya,&nbsp;S. S. Bhiravarasu,&nbsp;D. Putrevu,&nbsp;I. López,&nbsp;R. Ghail,&nbsp;P. Mason,&nbsp;J. Brossier,&nbsp;C. Monaco,&nbsp;S. Branca,&nbsp;R. A. Corsaro,&nbsp;D. Trang,&nbsp;J. R. Crandall,&nbsp;N. Mari,&nbsp;M. Blackett,&nbsp;G. Komatsu,&nbsp;A. Kosenkova,&nbsp;I. Flynn,&nbsp;S. Aveni,&nbsp;N. Lang,&nbsp;B. J. Thomson,&nbsp;I. Pagano,&nbsp;S. Cassisi,&nbsp;G. Eggers,&nbsp;R. E. Ernst,&nbsp;H. El Bilali,&nbsp;T. Kremic,&nbsp;J. Lustig-Yaeger,&nbsp;N. Izenberg,&nbsp;L. Bruzzone,&nbsp;M. El Yazidi,&nbsp;E. Ferroni,&nbsp;D. Coero Borga,&nbsp;C. Badia,&nbsp;S. Parisini,&nbsp;G. Fiasconaro,&nbsp;S. Cussini,&nbsp;M. Dolci,&nbsp;E. Brocato,&nbsp;G. Gallardo i Peres,&nbsp;N. Davidova,&nbsp;S. Kane,&nbsp;C. Ostberg,&nbsp;V. Ortega-Ramos,&nbsp;G. Di Achille","doi":"10.1029/2024JE008675","DOIUrl":"https://doi.org/10.1029/2024JE008675","url":null,"abstract":"<p>Several missions to Venus have recently been selected for launch, opening a new era for the exploration of the planet. A key question these missions seek to address is whether Venus is geologically active today. Detecting active volcanism on Venus would contribute to a better understanding of volcanic and atmospheric processes on Earth. The <i>Analogs for VENus' GEologically Recent Surfaces</i> (AVENGERS) initiative provides a comparative framework for the identification and analysis of terrestrial analog sites relevant to recent and possibly ongoing volcanic activity on Venus. Although this review focuses on terrestrial analogs for Venus exploration, the AVENGERS initiative also includes investigations that use Venus and Earth as analogs to better understand the evolution of terrestrial exoplanets. In addition, the AVENGERS initiative facilitates international collaboration by connecting Venus mission teams with the broader planetary and exoplanetary science communities. This review describes the scientific context of AVENGERS, details the selection criteria for terrestrial analog sites, and summarizes a set of suitable locations. Methodological approaches in analog studies that support the interpretation of Venus observations are also discussed.</p>","PeriodicalId":16101,"journal":{"name":"Journal of Geophysical Research: Planets","volume":"130 9","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024JE008675","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058007","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":"Stability of ammonia in C-O-H-N fluids at 3.0-7.8 GPa and 750–1100 °C: implications for the efficiency of nitrogen flux into the mantle","authors":"A. G. Sokol,&nbsp;A. A. Tomilenko,&nbsp;T. A. Bul’bak,&nbsp;A. N. Kruk","doi":"10.1007/s00410-025-02259-9","DOIUrl":"10.1007/s00410-025-02259-9","url":null,"abstract":"<div><p>The knowledge of Nitrogen speciation in the C-O-H-N fluid phase has important implications for the efficiency of Nitrogen flux and recycling in the mantle. The composition of nitrogen-rich C-O-H-N fluids is studied experimentally at pressures from 3.0 to 7.8 GPa, temperatures from 750 to 1090°С, and oxygen fugacity (<i>f</i>O₂) at the iron-wȕstite (IW) to fayalite-magnetite-quartz (FMQ) buffers simulating the conditions of a slab subducted to mantle depths from 100 to 250 km. Gas chromatography-mass spectrometry of the experimental quenched fluids reveals ammonia (NH₃), N₂, H₂O, CO₂, CH₄, as well as minor amounts of light alkanes and oxygen-bearing organics, while the NH₃/(N₂ + NH₃) ratio ranges from 0.01 to 0.97. Most of the experimental C-O-H-N fluids contain low fractions of NH₃ (≤ 0.12), while higher values are possible only at very low <i>f</i>O₂ unrealistic for subduction zones at depths &lt; 250 km. A semi-empirical model, with the equilibrium constant K*(K*=<span>(:{X}_{{NH}_{3}}^{2})</span>/<span>(:{X}_{{N}_{2}})</span>), is suggested to predict nitrogen speciation for a sediment-derived mobile phase with reduced H₂O contents for typical <i>P-T</i>-<i>f</i>O₂ ranges. As inferred previously, the fraction of NH₃ can exceed the N₂ fraction (<span>(:{X}_{{NH}_{3}}^{})</span>/<span>(:{X}_{{N}_{2}})</span> &gt;1) only in diluted aqueous fluids generated at temperatures of warm subduction and at a pressure of ~3.0 GPa, but it remains negligible in the hot subduction conditions. The transformation of the aqueous fluid into a supercritical fluid-melt (with reduced H₂O fraction) in warm or hot slabs subducted to depths equivalent to <i>P</i>≥3.5-5.5 GPa, is demonstrated to decrease significantly the fraction of NH₃ in the mobile phase, the redox conditions being invariable. In general, the aqueous fluid-to-SCFM transformation is expected to reduce the concentrations of nitrogen species compatible with phengite. Correspondingly, the coefficient of nitrogen partitioning between the mobile phase and phengite becomes lower with increasing pressure, which reduces the flux of nitrogen carried by both warm and hot slabs to depths &gt;150 km.</p></div>","PeriodicalId":526,"journal":{"name":"Contributions to Mineralogy and Petrology","volume":"180 10","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiphase Fracturing, Fluid Evolution, and Geothermal Sustainability in Mesoproterozoic Carbonates of the North China Craton","authors":"Lei Jiang,&nbsp;Zichen Wang,&nbsp;Yongliang Ou,&nbsp;Feng Ma,&nbsp;Yibo Wang","doi":"10.1111/bre.70057","DOIUrl":"https://doi.org/10.1111/bre.70057","url":null,"abstract":"<div>\u0000 \u0000 <p>Understanding the origin and evolution of fractures is critical for evaluating the long-term sustainability of geothermal water production from carbonate reservoirs, an emerging low-carbon energy source aligned with global carbon-neutrality goals. In this study, we develop a fracture-fluid evolution model for Mesoproterozoic carbonates of the North China Craton (NCC) by integrating U–Pb dating of fracture-filling dolomites with petrological, micro-CT, and multi-isotopic (C, O, clumped and ⁸⁷Sr/⁸⁶Sr) analyses. Three principal phases were identified at ~1550 to 973 Ma, 669 to 597 Ma, and 106 to 58 Ma. Clumped isotope-derived temperatures (57.1°C–93.6°C) and calculated burial depths (mostly &lt; 2 km, with few reaching ~2.5 km) indicate predominantly shallow diagenetic conditions. Fluids responsible for Phases I–II fracturing were primarily seawater-derived, whereas meteoric water dominated Phase III fracturing beginning in the late Mesozoic. Our results demonstrate that high reservoir connectivity—primarily driven by multiphase fracturing—exerts a first-order control on reservoir quality, while porosity and pore-throat dimensions play a secondary role. This connectivity, coupled with the absence of large karstic cavities, sustains high hydrostatic pressures and sustained geothermal yields. An estimated ~1.1 × 10²² J of geothermal energy—derived from meteoric recharge over recent geologic time—underscores the carbon-neutral potential of these fractured carbonates. The integrated methodology presented here offers a transferable framework for evaluating fractured geothermal systems worldwide.</p>\u0000 </div>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"37 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Observations of Clouds and Radiation Over King George Island and Implications for the Southern Ocean and Antarctica","authors":"Penny M. Rowe,&nbsp;Xun Zou,&nbsp;Irina Gorodetskaya,&nbsp;Robert A. Stillwell,&nbsp;Raul R. Cordero,&nbsp;Edgardo Sepulveda,&nbsp;David H. Bromwich,&nbsp;Zhenhai Zhang,&nbsp;F. Martin Ralph,&nbsp;Steven Neshyba","doi":"10.1029/2024JD042787","DOIUrl":"https://doi.org/10.1029/2024JD042787","url":null,"abstract":"<p>Clouds play an important role in the Southern Ocean and Antarctic surface energy balance via their radiative effects and in surface mass balance via precipitation formation. Here, we use measurements at Escudero Station (62.2°S, 58.97°W) on King George Island, north of the Antarctic Peninsula, to characterize clouds and their effects on the surface incoming radiation between 2017 and 2023. These measurements are unique providing 7 years of simultaneous cloud and radiation measurements, including year-round observations. Cloud measurements using a mini micropulse lidar showed that clouds are present 96% of the time with persistent low-level supercooled liquid-containing clouds: 86% of the lowest cloud bases are within the first 1 km. Liquid was present about 80% of the time, and most liquid was supercooled: cloud-base temperatures were below 0°C for 82% of atmospheric columns classified as liquid-containing. Combining pyranometer and pyrgeometer measurements with clear-sky radiative transfer modeling, we find that the downward cloud radiative forcing is negative during October–March and positive during April–September. For clouds with base temperatures below 260 K, downward longwave cloud forcing is found to be lower for ice-only clouds than for liquid-containing clouds; however, at warmer temperatures, both ice-only and liquid-containing clouds exhibited similar radiative forcing. During strong atmospheric river (AR) events, when long corridors of moisture bring heat and precipitation, surface temperatures are found to be positively correlated with downward shortwave (DSW) cloud forcing in summer, indicating that weaker DSW cloud forcing is linked to higher summertime surface temperatures.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 18","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024JD042787","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Hyperspectral imaging of river bathymetry using an ensemble of regression trees","authors":"Carl J. Legleiter,&nbsp;Paul J. Kinzel,&nbsp;Brandon T. Overstreet,&nbsp;Lee R. Harrison","doi":"10.1002/esp.70155","DOIUrl":"https://doi.org/10.1002/esp.70155","url":null,"abstract":"<p>Remote sensing has emerged as an effective tool for characterizing river systems, and machine learning (ML) techniques could make this approach even more powerful. To explore this possibility, we developed an ML-based workflow for hyperspectral imaging of river bathymetry using an ensemble of regression trees (HIRBERT). This approach involves using paired observations of depth and reflectance to select wavelength bands as predictors and then train a depth retrieval model; applying the model to the image yields a spatially continuous bathymetric map. We used data from five rivers with diverse morphologies and optical characteristics to assess whether HIRBERT can (1) provide more accurate depth estimates than a band ratio-based algorithm and (2) extend the range of depths detectable via remote sensing. Relative to single band combinations identified via optimal band ratio analysis (OBRA), regression tree ensembles improved depth retrieval performance, with observed versus predicted (OP) regression <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mi>R</mi>\u0000 <mn>2</mn>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$$ {R}^2 $$</annotation>\u0000 </semantics></math> values increasing for all five sites. Similarly, HIRBERT provided more reliable depth estimates than OBRA over the full range of depths present along each river. These results suggest that by incorporating additional spectral information from multiple wavelength bands, ML could enhance bathymetric mapping across a range of river environments. In addition, we show how graphical tools can facilitate interpretation of ML-based depth retrieval models and yield insight regarding relationships between depth and reflectance. The HIRBERT workflow is packaged in free, standalone software developed to support applications in river research and management. Although ML can enhance remote sensing of river bathymetry, the limitations of this approach must also be acknowledged: Field measurements of water depth are required to train a depth retrieval model and the resulting model should only be applied to the image from which the training data were derived. The inherently image-specific nature of this approach implies that developing generalized regression tree ensembles that could be applied at larger scales would require additional research.</p>","PeriodicalId":11408,"journal":{"name":"Earth Surface Processes and Landforms","volume":"50 12","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clastic Rocks of the Basement-Overlying Proterozoic Sedimentary Sequences: Communication 2. Sandstones and Main Features of Lithogeochemistry","authors":"A. V. Maslov,&nbsp;V. N. Podkovyrov,&nbsp;A. K. Khudoley,&nbsp;A. V. Kuptsova","doi":"10.1134/S0024490225700208","DOIUrl":"10.1134/S0024490225700208","url":null,"abstract":"<p>Based on the analysis of the bulk chemical composition of sandstones that make up the Proterozoic sedimentary sequences, which unconformably overlie the basement (Ai and Prikamsk formations; Mukun and Valdai groups; Kerur Formation; Gwalior, Athabasca, Libby Creek, Wufoshan, and Birim groups, and others), it has been shown that the content of the major oxides and trace elements in them in the overwhelming majority of cases differs significantly from the chemical composition of the average Proterozoic cratonic sandstone. Their composition corresponds mainly to litharenites, sublitharenites, arkoses, and subarkoses according to the classifications proposed by F.J. Pettijohn with co-authors and M. Herron. Most of the sandstones from the analyzed set belong to rocks containing a significant or predominant part of the lithogenic component. The detrital material composing the sandstones was sourced from fairly mature substrates, with insignificant role of the basic igneous and metamorphic (?) rocks. The bulk chemical composition of sandstones and the paleogeodynamic nature of rocks suggest that the substrates were produced by various orogenic/collisional and rifting events. As with the fine-grained clastic rocks in the studied Proterozoic sedimentary sequences, obviously, not all of the discriminant diagrams used in this study yield consistent results.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 5","pages":"512 - 526"},"PeriodicalIF":0.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050863","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":"Spontaneous Evolution From Electron-Only to Standard Reconnection in a Force-Free Current Sheet","authors":"Jincai Ren,&nbsp;San Lu,&nbsp;Rony Keppens","doi":"10.1029/2025JA034322","DOIUrl":"https://doi.org/10.1029/2025JA034322","url":null,"abstract":"<p>Electron-only reconnection is a novel reconnection regime observed recently in the turbulent magnetosheath and magnetotail, related to energy conversion and large-scale reconnection events. However, the relationship between this novel regime and standard kinetic reconnection is still not fully understood. In this paper, we investigate the spontaneous evolution from electron-only to standard reconnection in a force-free current sheet under guide fields using 2.5-dimensional particle-in-cell (PIC) simulations. Our results reveal that reconnection occurs within the electron-only regime initially, where ion outflow jets and ion heating are absent. This absence is attributed to the spatial limitations of the downstream region, which restricts the influence of electric forces, thereby preventing significant ion acceleration. Consequently, the negligible ion outflow velocities result in minimal work done by the pressure gradient term, and the contribution of ion enthalpy flux remains insignificant, thereby leading to the lack of ion heating during this phase. As reconnection proceeds, the available space for ion acceleration increases, allowing for both ion heating and the development of ion outflow jets, which ultimately results in a temporal evolution to the standard kinetic reconnection regime. We further examine the effect of ion temperature on this temporal evolution and discover that high ion temperature inhibits this temporal evolution from electron-only to standard reconnection, confining reconnection to the electron-only regime throughout the simulation even though the simulation domain is large. This work provides insights into the role of electron-only reconnection in the magnetosheath.</p>","PeriodicalId":15894,"journal":{"name":"Journal of Geophysical Research: Space Physics","volume":"130 9","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reassessing the Depositional Environment of the Amasiri Sandstone in Akpoha within the Turonian Eze-Aku Group through Integrated Geological Analyses","authors":"Nelson Onyebuchi Nwobi,&nbsp;Joshua Chuka Ubah,&nbsp;Ifeanyi Chidozie Oli","doi":"10.1134/S0024490225700154","DOIUrl":"10.1134/S0024490225700154","url":null,"abstract":"<p>The depositional environment of the Amasiri Sandstone within the Turonian Eze-Aku Group in the Lower Benue Trough, southeastern Nigeria, has remained controversial due to its lithological variability and complex facies architecture. This study combines detailed sedimentological observations derived from outcrop analysis, petrographic studies, and paleocurrent measurements to re-evaluate the depositional conditions and provenance of the Amasiri sandstone. Petrographic data indicate arkosic sandstone compositions, pointing toward potential source areas, including the Oban Massif, Calabar Flank, and the basement complexes around Ogoja. Analysis of sedimentological features and paleocurrent patterns supports a depositional scenario dominated by relatively dense gravity-driven sediment flows entering a marine or lagoonal basin. These findings suggest deposition within a hyperpycnal deltaic environment, providing a better understanding of the sedimentary processes that controlled the formation of the Amasiri Sandstone.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 5","pages":"604 - 620"},"PeriodicalIF":0.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050860","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":"Diamictites (Tilloids) in Precambrian and Paleozoic Sections of the Eastern Part of the Middle Tien Shan","authors":"A. G. Shevkunov","doi":"10.1134/S0024490225700178","DOIUrl":"10.1134/S0024490225700178","url":null,"abstract":"<p>The article presents new information on the structure of Upper Precambrian sections in the eastern part of the Middle Tien Shan containing diamictites (tilloids). Identification of two lateral (Dzhetymtau and Akshiyrak) section types in the Vendian Dzhetym Group is substantiated. The Dzhetymtau type is characterized by the presence of rocks containing iron oxide compounds (ferruginous quartzites and hematite schists) in the section. The Akshiyrak type is marked by the presence of black shale layers with pyrite mineralization. At the same time, both types contain two (Dzhetymtau and Baikonur) regional stages (hereafter, horizons) of diamictite development. The paper presents materials indicating that the eastern part of the Middle Tien Shan includes a previously unknown (pre-Dzhetymtau) horizon of diamictite development in the Upper Riphean Boordu sequence, which is compared with the Bayisi Formation at the base of the Kurugtagh Group in northwestern China. In addition, the Kuilu–Sarydzhaz part of the Middle Tien Shan includes the Paleozoic diamictites.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 5","pages":"572 - 588"},"PeriodicalIF":0.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050868","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}