Lithology and Mineral Resources最新文献_第5页

Glauconite Deposition in the Cambrian Gushan Formation, North China: Insights into Paleoenvironments and Sedimentary Processes 华北寒武纪孤山组海绿石沉积：古环境与沉积过程的认识

IF 0.9 4区地球科学

Lithology and Mineral Resources Pub Date : 2025-11-12 DOI: 10.1134/S0024490225700233

Muhammad Riaz, Khalid Latif, Ziliang Liu, Fayaz Ali

{"title":"Glauconite Deposition in the Cambrian Gushan Formation, North China: Insights into Paleoenvironments and Sedimentary Processes","authors":"Muhammad Riaz, Khalid Latif, Ziliang Liu, Fayaz Ali","doi":"10.1134/S0024490225700233","DOIUrl":"10.1134/S0024490225700233","url":null,"abstract":"This study investigates the glauconitic ooids of the Cambrian Gushan Formation at the Kelan section (Shanxi Province) through stratigraphic, microscopic, and geochemical analyses to unravel the paleoenvironmental conditions and sedimentary processes governing glauconite formation. The glauconite occurs within oolitic grainstone, which was deposited during the normal regression (highstand systems tract) of a third-order sequence, indicating a moderate to high sedimentation rate in a high-energy setting. Microscopic and geochemical data confirm the presence of glauconite in the form of pellets comparable in size to ooids and reveal their calcitic composition, suggesting simultaneous precipitation with calcite. A key finding of this study is the recognition of the Contrast Temperature Association (CTA), which highlights the coexistence of warm-water oolitic grainstone and traditionally cool-water glauconite, challenging the conventional paradigm of glauconite formation. The current sedimentological and geochemical investigations confirm that the glauconitic ooids of the Cambrian Gushan Formation (Miaolingian Series) at the Kelan section are autochthonous.","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 6","pages":"769 - 783"},"PeriodicalIF":0.9,"publicationDate":"2025-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145493346","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

Rare-Earth Mineralization in Rift Formations of the Ishlya Graben (Western Slope of the Southern Urals) 南乌拉尔西斜坡伊什利亚地堑断陷组中的稀土成矿作用

IF 0.9 4区地球科学

Lithology and Mineral Resources Pub Date : 2025-11-12 DOI: 10.1134/S0024490225700257

S. G. Kovalev, S. S. Kovalev

{"title":"Rare-Earth Mineralization in Rift Formations of the Ishlya Graben (Western Slope of the Southern Urals)","authors":"S. G. Kovalev, S. S. Kovalev","doi":"10.1134/S0024490225700257","DOIUrl":"10.1134/S0024490225700257","url":null,"abstract":"Rift formations of the Ishlya graben, widespread on the western slope of the Southern Urals (Bashkir meganticlinorium), are represented by alternating terrigenous rocks (carbonaceous shales, siltstones, and siltstones) of the volcanoplutonic association (gabbrodolerites and basic effusives with a small amount of pyroclastic material). Terrigenous rocks of the Ishlya graben contain rare-earth mineralization: allanite-(Ce), REE-bearing epidote, monazite-(Ce), xenotime-(Y), chevkinite-(Ce), fergusonite-(Nb), rare-earth fluorocarbonates (bastnaesite-(Ce), hydroxyl bastnaesite-(Ce), parisite-(Ce), and synchysite-(Ce) characterized by a wide variety of morphological types and the presence of complex associations. The chemical composition of metamorphic minerals was used to determine the P–T parameters of rock metamorphism (T = 250–600°C, P = 2–10 kbar), the chemical composition and temperature of the fluid phase (CaCl2 + NaCl, T = 180–408°C for primary inclusions and FeCl2, T = 121–248°C for secondary ones), as well as the hematization temperature (465–593°C) and re-equilibration of the ilmenite–titanomagnetite association (T = 501–576°C at oxygen fugacity from –23.15 to –21.25). It is shown that the processes of rare-earth mineralization in the natural environment are diverse and multifactorial, with the chemistry of the local-scale mineralization environment being of great importance. The comparative analysis of the chemical composition of monazite and xenotime revealed that the primary source of rare-earth phosphates in channel and alluvial deposits were represented by the Riphean–Vendian metamorphosed rocks in the eastern subzone of the Bashkir meganticlinorium.","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 6","pages":"739 - 753"},"PeriodicalIF":0.9,"publicationDate":"2025-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145493404","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

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