Lithology and Mineral Resources最新文献

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, V. N. Podkovyrov, A. K. Khudoley, A. V. Kuptsova","doi":"10.1134/S0024490225700208","DOIUrl":"10.1134/S0024490225700208","url":null,"abstract":"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.","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

Reassessing the Depositional Environment of the Amasiri Sandstone in Akpoha within the Turonian Eze-Aku Group through Integrated Geological Analyses 应用综合地质分析重新评价Turonian Eze-Aku群Akpoha地区Amasiri砂岩沉积环境

IF 0.9 4区地球科学

Lithology and Mineral Resources Pub Date : 2025-09-14 DOI: 10.1134/S0024490225700154

Nelson Onyebuchi Nwobi, Joshua Chuka Ubah, Ifeanyi Chidozie Oli

引用次数: 0

Diamictites (Tilloids) in Precambrian and Paleozoic Sections of the Eastern Part of the Middle Tien Shan 中天山东部前寒武纪和古生代剖面的二晶岩（Tilloids）

IF 0.9 4区地球科学

Lithology and Mineral Resources Pub Date : 2025-09-14 DOI: 10.1134/S0024490225700178

A. G. Shevkunov

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, Yu. V. Yashunsky, A. E. Davydov, V. I. Taskaev, I. A. Morozov","doi":"10.1134/S002449022570018X","DOIUrl":"10.1134/S002449022570018X","url":null,"abstract":"Study of the internal structure of the recently described new species of sponge Gzhelistella cornigera (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.","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, L. G. Domaratskaya, A. V. Koltsova, K. V. Syromyatnikov","doi":"10.1134/S0024490225700221","DOIUrl":"10.1134/S0024490225700221","url":null,"abstract":"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.","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, S. Yu. Sokolov, A. V. Soloviev","doi":"10.1134/S002449022570021X","DOIUrl":"10.1134/S002449022570021X","url":null,"abstract":"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.","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

{"title":"Characterization and Paleoenvironmental Implications of Phosphorite-Bearing Deposits in Dakhla Oasis, Western Desert, Egypt","authors":"Rehab A. Fekry, Mohammed I. El Anbaawy, Gebely A. Abu El-Kheir, Said Mohamed Said, Rania Abu-Ali","doi":"10.1134/S0024490225700166","DOIUrl":"10.1134/S0024490225700166","url":null,"abstract":"The current study presents an integrated investigation of petrographical, mineralogical, and geochemical data from Upper Cretaceous phosphorite-bearing strata west of the Abu-Tartur Plateau in the Western Desert of Egypt. Fifty-five samples representing phosphorite and associated rocks were collected from six outcrops. Three facies are identified: phosphorites, carbonates, and siliciclastics. The mineralogy of the samples was quantified via X-ray diffraction (XRD) as follows: fluorapatite, dolomite, calcite, pyrite, quartz, and smectite species. Atomic absorption spectrophotometry (AAS) permitted the quantification of the major oxides: SiO2, Al2O3, MgO, Fe2O3, CaO, K2O, Na2O, P2O5, and SO3 as well as F and loss of ignition (LOI). The statistical analysis of these geochemical data revealed three significant controlling factors during and after the deposition of the studied phosphorite and associated rocks. These factors represent the effects of the diagenesis of phosphorites, argillaceous marine rocks, and alumino-silicates in descending order of their relative strength. Trends of the analyzed major elements for the study samples are documented. Phosphorite, phosphatic rocks, dolomitized rocks, and siltstone-mudstone are recognized lithologies on the basis of the chemical compositions of the analyzed major oxides. The principal diagenetic processes affecting the phosphorite-bearing rocks included dolomitization, pyritization, silicification, bone dissolution, and micritization.","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 5","pages":"589 - 603"},"PeriodicalIF":0.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050864","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

Growth Faulting, Rate of Oligocene Sediment Accumulations, and Stratal Geometries in a Greater Ughelli Depobelt Oil Field, Niger Delta Basin, Nigeria 尼日利亚尼日尔三角洲盆地Greater Ughelli油田生长断裂、渐新世沉积速率及地层几何特征

IF 0.9 4区地球科学

Lithology and Mineral Resources Pub Date : 2025-09-14 DOI: 10.1134/S0024490225700142

Raphael Oaikhena Oyanyan

{"title":"Growth Faulting, Rate of Oligocene Sediment Accumulations, and Stratal Geometries in a Greater Ughelli Depobelt Oil Field, Niger Delta Basin, Nigeria","authors":"Raphael Oaikhena Oyanyan","doi":"10.1134/S0024490225700142","DOIUrl":"10.1134/S0024490225700142","url":null,"abstract":"To ascertain the rate of sediment accumulations and relationship to growth faulting and the formation of stratal geometries favourable to petroleum accumulation, seismic data interpretations and stratigraphic datum age-depth plot analysis as well as well-log correlations within a sequence stratigraphic framework were conducted. Biostratigraphic data show that the age of sediments penetrated by oil wells from 2280 to 3544 m depth ranged from Early Oligocene to Late Oligocene and deposition took place in inner to middle neritic environments. For 7.8 million years, the rate at which sediments accumulated over the under-compacted Akata Formation shales varied between about 144.34 and 301.54 m/Ma. The high rate of sedimentation triggered the formation of a growth fault and the nucleation and growth of other synthetic faults. The growth faults are characterised by rollover anticline and drag folds consisting of footwall anticline and hanging-wall syncline. The footwall anticlines, like the rollover anticlines, offer drilling targets. Despite strata faulting and associated complexities, principles of sequence stratigraphy was used to successfully correlate well logs across the field in both the strike and dip directions. Four third-order depositional sequences, five genetic sequences, and system tracts were identified. Highstand Systems tract (HST) and Transgressive Systems tract (TST) are well preserved in the four depositional sequences, while LSTs are primarily found in Early Oligocene deeper sequences and in downdip wells, but all generally pinch-out in updip direction. The dip-orientated stratigraphic correlation implies stepwise progradation or down-stepping stratal geometries as a result of the non-uniformed subsiding platform generated by growth faulting.","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 5","pages":"621 - 633"},"PeriodicalIF":0.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050865","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

δ11B in Mud Volcanic Waters of the Kerch–Taman Mud-Volcanic Area (Crimea–Caucasus Region): Genesis and Formation Conditions of the Boron Mineralization 克里米亚-高加索地区Kerch-Taman泥火山区泥火山水体δ11B：硼成矿成因及形成条件

IF 0.9 4区地球科学

Lithology and Mineral Resources Pub Date : 2025-09-14 DOI: 10.1134/S0024490225700191

V. Y. Lavrushin, Y. Ma, C.-F. You, A. S. Aidarkozhina, E. V. Sokol, Y.-P. Lin, G. A. Chelnokov, S. N. Koch, X. Ma, G. Zheng

{"title":"δ11B in Mud Volcanic Waters of the Kerch–Taman Mud-Volcanic Area (Crimea–Caucasus Region): Genesis and Formation Conditions of the Boron Mineralization","authors":"V. Y. Lavrushin, Y. Ma, C.-F. You, A. S. Aidarkozhina, E. V. Sokol, Y.-P. Lin, G. A. Chelnokov, S. N. Koch, X. Ma, G. Zheng","doi":"10.1134/S0024490225700191","DOIUrl":"10.1134/S0024490225700191","url":null,"abstract":"The isotopic-geochemical characteristics of boron in waters of 21 mud volcanoes in the Kerch–Taman area have been determined. Boron concentration varies from 14 to 550 mg/L, and δ11B values range from +8.3 to +54.7‰ (+21‰ on average). Low δ11B values (~+14‰) were also obtained in two freshwater samples collected from aquifers of Neogene–Quaternary sediments. These data reflect the high heterogeneity of boron isotopic characteristics in waters of various genesis, which are discharged on the Earth’s surface within the Kerch and Taman peninsulas. It is shown that the increase of boron concentration in the mud volcanic waters is provided by the contribution of isotopically light (δ11B ~ +10‰) boron. The inverse relationship between δ11B and δ18O values in water was found. It indicates common mechanisms of 10B and 18O enrichment in the mud volcanic waters. These processes are temperature-dependent. They demonstrate a significant correlation of boron concentrations ([B]) and its isotopic composition (δ11B) with T(Mg-Li)-temperatures in the range from ~40 to 130oC. Thus, the chemical ([B]) and isotopic (δ11B) variations observed in the studied mud volcanic waters reflect different depths of the formation of water salt composition and, respectively, the different temperature stages of catagenetic transformation of sedimentary strata. The revealed patterns are probably related to the smectite transformation into illite, which takes place in the clayey strata of the Maikop Group and is accompanied by the release of large volumes of dehydration waters with high δ18O values (up to +14‰). The most probable source of boron with low δ11B values is destructive smectites.","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 5","pages":"527 - 552"},"PeriodicalIF":0.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050866","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

Search-Oriented Technique for the Numerical Forecasting of Gold Placers: Evidence from the Vagran Placer District 面向搜索的金矿数值预测技术——以Vagran砂矿区为例

IF 0.9 4区地球科学

Lithology and Mineral Resources Pub Date : 2025-07-11 DOI: 10.1134/S0024490225700105

R. M. Chefranov, A. V. Lalomov, A. A. Bochneva

{"title":"Search-Oriented Technique for the Numerical Forecasting of Gold Placers: Evidence from the Vagran Placer District","authors":"R. M. Chefranov, A. V. Lalomov, A. A. Bochneva","doi":"10.1134/S0024490225700105","DOIUrl":"10.1134/S0024490225700105","url":null,"abstract":"The field research and analysis of data from unpublished reports made it possible to identify two placer gold types within the Vagran placer cluster (northern Urals) that are indicators of the primary gold–sulfide–quartz and hypogenic-hypergenic mineralization. They are used as references for developing a digital system for predicting parameters and localizing primary placer gold sources. In the present work, the typomorphic characteristics of placer gold (grain size, roundness, sorting and fineness, as well as trace element content) are formalized as a quantitative assessment. These data were processed using the methods of multiplicative indicators, linear regression, and random regression tree algorithm, which make it possible to forecast the composition and localization of the primary mineralization with greater confidence and stability than ordinary parameters separately. Since the data needed for such an assessment are sufficient in unpublished reports on the sampling of heavy mineral concentrates, additional field and high-cost laboratory studies are optional. Analysis of the correlation matrix allowed to identify characteristic indicators for the primary gold–sulfide–quartz and hypogenic-hypergenic mineralization, as well as to propose recommendations for the prospecting and exploration of primary Au potential in the ore cluster. All three methods provide consistent results, making it possible to predict the parameters of primary Au content. The multiplicative coefficient calculation method, which yielded a more contrasting (prominent) result, seems to be the simplest and most generalized tool suitable for any set of consistent data, whereas other methods require a more in-depth analysis of input parameters. The proposed forecast estimation method promotes the efficiency and partial automatization of the determination of primary mineralization potential in regions.","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 4","pages":"431 - 443"},"PeriodicalIF":0.9,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164726","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