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Correction: The chemical and Sm–Nd isotopic behaviour of accessory minerals in metasediments along the LP-HT Chugach Metamorphic Complex (Alaska) 修正:阿拉斯加州LP-HT Chugach变质杂岩变质沉积物中辅助矿物的化学和Sm-Nd同位素行为
IF 3.7 2区 地球科学
Contributions to Mineralogy and Petrology Pub Date : 2025-09-15 DOI: 10.1007/s00410-025-02261-1
Théo Biget, Emilie Bruand, Inês Pereira, Maud Boyet, Deta Gasser, Kurt Stüwe, Antonio Langone
{"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}
引用次数: 0
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 C- o - h - n流体中氨在3.0-7.8 GPa和750-1100℃下的稳定性:对进入地幔的氮通量效率的影响
IF 3.7 2区 地球科学
Contributions to Mineralogy and Petrology Pub Date : 2025-09-15 DOI: 10.1007/s00410-025-02259-9
A. G. Sokol, A. A. Tomilenko, T. A. Bul’bak, A. N. Kruk
{"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>O<sub>2</sub>) 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 (NH<sub>3</sub>), N<sub>2</sub>, H<sub>2</sub>O, CO<sub>2</sub>, CH<sub>4</sub>, as well as minor amounts of light alkanes and oxygen-bearing organics, while the NH<sub>3</sub>/(N<sub>2</sub> + NH<sub>3</sub>) ratio ranges from 0.01 to 0.97. Most of the experimental C-O-H-N fluids contain low fractions of NH<sub>3</sub> (≤ 0.12), while higher values are possible only at very low <i>f</i>O<sub>2</sub> 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 H<sub>2</sub>O contents for typical <i>P-T</i>-<i>f</i>O<sub>2</sub> ranges. As inferred previously, the fraction of NH<sub>3</sub> can exceed the N<sub>2</sub> 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 H<sub>2</sub>O 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 NH<sub>3</sub> 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}
引用次数: 0
Multiphase Fracturing, Fluid Evolution, and Geothermal Sustainability in Mesoproterozoic Carbonates of the North China Craton 华北克拉通中元古代碳酸盐岩多相压裂、流体演化与地热可持续性
IF 2.6 2区 地球科学
Basin Research Pub Date : 2025-09-15 DOI: 10.1111/bre.70057
Lei Jiang, Zichen Wang, Yongliang Ou, Feng Ma, Yibo Wang
{"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 <sup>87</sup>Sr/<sup>86</sup>Sr) 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 × 10<sup>22</sup> 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}
引用次数: 0
Observations of Clouds and Radiation Over King George Island and Implications for the Southern Ocean and Antarctica 乔治国王岛上空云和辐射的观测及其对南大洋和南极洲的影响
IF 3.4 2区 地球科学
Journal of Geophysical Research: Atmospheres Pub Date : 2025-09-15 DOI: 10.1029/2024JD042787
Penny M. Rowe, Xun Zou, Irina Gorodetskaya, Robert A. Stillwell, Raul R. Cordero, Edgardo Sepulveda, David H. Bromwich, Zhenhai Zhang, F. Martin Ralph, Steven Neshyba
{"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}
引用次数: 0
Clastic Rocks of the Basement-Overlying Proterozoic Sedimentary Sequences: Communication 2. Sandstones and Main Features of Lithogeochemistry 基底-上覆元古代沉积层序的碎屑岩:通讯2。砂岩及其岩石地球化学主要特征
IF 0.9 4区 地球科学
Lithology and Mineral Resources Pub Date : 2025-09-14 DOI: 10.1134/S0024490225700208
A. V. Maslov, V. N. Podkovyrov, A. K. Khudoley, A. V. Kuptsova
{"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}
引用次数: 0
Archaeobotanical study of the Tangzigou site reveals wild plant exploitation in the terminal Paleolithic of southwest China 汤子沟遗址的考古植物学研究揭示了中国西南地区旧石器时代末期野生植物的开发利用
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2025-09-14 DOI: 10.1016/j.quaint.2025.109980
Yong-Jiang Huang , Xue-Ping Ji , Nina G. Jablonski , Jian-Hui Liu , Qing Yang , Zi-Ning Zou , Jun Yang , Yun-Heng Ji
{"title":"Archaeobotanical study of the Tangzigou site reveals wild plant exploitation in the terminal Paleolithic of southwest China","authors":"Yong-Jiang Huang ,&nbsp;Xue-Ping Ji ,&nbsp;Nina G. Jablonski ,&nbsp;Jian-Hui Liu ,&nbsp;Qing Yang ,&nbsp;Zi-Ning Zou ,&nbsp;Jun Yang ,&nbsp;Yun-Heng Ji","doi":"10.1016/j.quaint.2025.109980","DOIUrl":"10.1016/j.quaint.2025.109980","url":null,"abstract":"<div><div>Wild plants have been an important part of the diet of ancient people, and their remains at archaeological sites are therefore a good proxy for disentangling human exploitation of plant foods in the history. Yunnan in southwest China has been poorly explored in archaeobotany, especially for periods before the Neolithic when gathering was still dominant in plant utilization. Here, we present an archaeobotanical assemblage consisting of fruit and seed remains from the regionally terminal Paleolithic (8740 ± 30 BP) Tangzigou site in western Yunnan. Our taxonomic identification shows that the archaeobotanical assemblage is poor in diversity with only four taxa, i.e., <em>Celtis</em> sp. (hackberry), <em>Prunus persica</em> (wild peach), <em>Vitis</em> sp. (wild grape) and <em>Choerospondias axillaris</em> (Nepal hog plum), which have served as potential food resources to ancient people of the site. However, the full picture of plant exploitation by the Tangzigou people cannot be gained only from the low abundance and diversity of plant remains at the site itself. Based on what is known of the practices of hunter-gatherers today, most fruits and seeds were probably eaten by Tangzigou people during the course of foraging trips, with only a small fraction being carried back to the site for processing and consumption. The fruit stone remains of <em>C. axillaris</em> have been processed with fire accidently or intentionally; the intentional fire-processing was probably for consumption of the seeds inside, which is compatible with the processing of animal foods with fire by the Tangzigou people. Our study brings to light the possible incorporation of plant food resources into the diet of the latest Paleolithic Tangzigou people who are suggested to have lived under a warm subtropical climate. It also enriches our knowledge of the historical use of wild plants by early Holocene humans in southwest China.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"748 ","pages":"Article 109980"},"PeriodicalIF":1.8,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057312","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}
引用次数: 0
Mixed-Layer Glauconite-Nontronite Clay Minerals from Biomorphoses and Host Rocks of the Gzhelian Stage (Moscow Region) 莫斯科地区格日连期生物地貌和寄主岩中的海绿石-非绿石混合层粘土矿物
IF 0.9 4区 地球科学
Lithology and Mineral Resources Pub Date : 2025-09-14 DOI: 10.1134/S002449022570018X
B. A. Sakharov, Yu. V. Yashunsky, A. E. Davydov, V. I. Taskaev, I. A. Morozov
{"title":"Mixed-Layer Glauconite-Nontronite Clay Minerals from Biomorphoses and Host Rocks of the Gzhelian Stage (Moscow Region)","authors":"B. A. Sakharov,&nbsp;Yu. V. Yashunsky,&nbsp;A. E. Davydov,&nbsp;V. I. Taskaev,&nbsp;I. A. Morozov","doi":"10.1134/S002449022570018X","DOIUrl":"10.1134/S002449022570018X","url":null,"abstract":"<p>Study of the internal structure of the recently described new species of sponge <i>Gzhelistella cornigera</i> (Davydov et al., 2023) and fusulinids from the Gzhelian stage (Moscow region) revealed numerous polymineral biomorphoses composed of mixed-layer clay minerals, goethite, chalcedony, and sanidine. A detailed structural and crystal-chemical study of clay minerals from biomorphoses and the host rock revealed a structural heterogeneity of the mixed-layer minerals. Using the X-ray diffraction pattern modeling method, it has been established that the clay material in the studied samples is represented by two authigenic mixed-layer (glauconite-nontronite) types with a contrasting relationship between the content of different layers and/or their alternation order, but identical structural and crystal-chemical characteristics of the crystallites. It is shown that such formations should be considered a single heterogeneous mixed-layer structure, with the relationship and/or alternation order of different layer types in crystals varying within certain limits. It has been established that the structural and crystal-chemical characteristics of mixed-layer minerals from brown biomorphoses and host rocks are almost indistinguishable, whereas these parameters are significantly different for green biomorphoses. It is assumed that the newly formed clay minerals from host rocks, like their brown analogs, were formed under similar physicochemical conditions. It is also obvious that during the formation of mixed-layer phases, brown biomorphoses were already deprived of the biogenic organic matter, while green biomorphoses retained it in sufficient quantity to change the environmental conditions within themselves in some places.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 5","pages":"553 - 571"},"PeriodicalIF":0.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050867","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}
引用次数: 0
Comparative Analysis of Geochemical Peculiarities of the Indian, Atlantic, and Pacific Pleistocene Sediments 印度、大西洋和太平洋更新世沉积物地球化学特征的比较分析
IF 0.9 4区 地球科学
Lithology and Mineral Resources Pub Date : 2025-09-14 DOI: 10.1134/S0024490225700221
M. A. Levitan, L. G. Domaratskaya, A. V. Koltsova, K. V. Syromyatnikov
{"title":"Comparative Analysis of Geochemical Peculiarities of the Indian, Atlantic, and Pacific Pleistocene Sediments","authors":"M. A. Levitan,&nbsp;L. G. Domaratskaya,&nbsp;A. V. Koltsova,&nbsp;K. V. Syromyatnikov","doi":"10.1134/S0024490225700221","DOIUrl":"10.1134/S0024490225700221","url":null,"abstract":"<p>Based on the reports of DSDP, ODP, IODP phases of the International Deep-Sea Drilling Project and other references, the arithmetic mean chemical compositions of the main Pleistocene sediment types in the Indian, Atlantic, and Pacific oceans are compared. The mean chemical composition of different sediment types was calculated as the arithmetic mean of the chemical component concentrations, as well as the average composition of Pleistocene sediments, on the whole, for three main ocean basins. It is shown that masses of the dry sedimentary material play the leading role in the comparative analysis of the weighted mean chemical composition. The mass accumulation rates are evaluated for the major oxides in Pleistocene sediments of all oceans. Data on modern factors influencing the oceanic sedimentation, ratios of the water catchment areas with accumulation basin areas, composition of provinces, continent climate, as well as areas of the sea floor above/under the critical depth surface, and primary production of the ocean are considered. These data are compared with our results concerning the values of major oxide concentrations in Pleistocene sediments of all oceans. It has been established that the mean chemical composition of oceanic sediments is governed mainly by the level of critical depth surface and degree of geochemical differentiation.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 5","pages":"477 - 495"},"PeriodicalIF":0.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050869","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}
引用次数: 0
Late Pliocene‒Quaternary (<2.7 Ma) Sedimentation in the Eurasian Basin (Arctic Ocean) 欧亚盆地(北冰洋)晚上新世-第四纪(<2.7 Ma)沉积
IF 0.9 4区 地球科学
Lithology and Mineral Resources Pub Date : 2025-09-14 DOI: 10.1134/S002449022570021X
A. V. Zayonchek, S. Yu. Sokolov, A. V. Soloviev
{"title":"Late Pliocene‒Quaternary (<2.7 Ma) Sedimentation in the Eurasian Basin (Arctic Ocean)","authors":"A. V. Zayonchek,&nbsp;S. Yu. Sokolov,&nbsp;A. V. Soloviev","doi":"10.1134/S002449022570021X","DOIUrl":"10.1134/S002449022570021X","url":null,"abstract":"<p>Geomorphological analysis and age correlation of the Late Pliocene–Quaternary regional stages identified in the ARC1407A seismic section by onlapping the oceanic basement, with the age specified based on calculations of the position of theoretical linear magnetic anomalies, were carried out. Interpretation of the ARC1407A seismic time section makes it possible to use the previous seismostratigraphic correlations of glaciomarine deposits for the western Barents Sea and the northeastern part of the adjacent deep-water basin. Based on the geomorphological analysis, extended canyon systems were identified in the Nansen Basin and eastern Amundsen Basin. Significant amounts of sedimentary cover in the Nansen Basin are glaciomarine sediments deposited since the end-Late Pliocene. In the central Nansen Basin, glaciomarine sediments were deposited simultaneously from two closely located troughs (Saint Anna and Voronin). Glaciomarine sediments, transported to the central Nansen Basin cyclically, have a mixed character (underwater landslides and turbidite flows). In the Amundsen and Podvodnikov basins, glaciomarine deposits began to form in the second half of the Middle Neopleistocene.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 5","pages":"496 - 511"},"PeriodicalIF":0.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050861","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}
引用次数: 0
Characterization and Paleoenvironmental Implications of Phosphorite-Bearing Deposits in Dakhla Oasis, Western Desert, Egypt 埃及西部沙漠Dakhla绿洲含磷矿床特征及古环境意义
IF 0.9 4区 地球科学
Lithology and Mineral Resources Pub Date : 2025-09-14 DOI: 10.1134/S0024490225700166
Rehab A. Fekry, Mohammed I. El Anbaawy, Gebely A. Abu El-Kheir, Said Mohamed Said, Rania Abu-Ali
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